The jaguar (''Panthera onca'') is a large
cat
The cat (''Felis catus'') is a domestic species of small carnivorous mammal. It is the only domesticated species in the family Felidae and is commonly referred to as the domestic cat or house cat to distinguish it from the wild members of ...
species and the only
living
Living or The Living may refer to:
Common meanings
*Life, a condition that distinguishes organisms from inorganic objects and dead organisms
** Living species, one that is not extinct
*Personal life, the course of an individual human's life
* ...
member of the genus ''
Panthera
''Panthera'' is a genus within the family Felidae that was named and described by Lorenz Oken in 1816 who placed all the spotted cats in this group. Reginald Innes Pocock revised the classification of this genus in 1916 as comprising the tiger ...
'' native to the
Americas. With a body length of up to and a weight of up to , it is the biggest cat species in the Americas and the
third largest in the world. Its distinctively marked
coat
A coat typically is an outer garment for the upper body as worn by either gender for warmth or fashion. Coats typically have long sleeves and are open down the front and closing by means of buttons, zippers, hook-and-loop fasteners, toggles ...
features pale yellow to tan colored fur covered by spots that transition to
rosettes on the sides, although a
melanistic
The term melanism refers to black pigment and is derived from the gr, μελανός. Melanism is the increased development of the dark-colored pigment melanin in the skin or hair.
Pseudomelanism, also called abundism, is another variant of pi ...
black coat appears in some individuals. The jaguar's powerful bite allows it to pierce the
carapace
A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the und ...
s of
turtle
Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked ...
s and
tortoise
Tortoises () are reptiles of the family Testudinidae of the order Testudines (Latin: ''tortoise''). Like other turtles, tortoises have a shell to protect from predation and other threats. The shell in tortoises is generally hard, and like ot ...
s, and to employ an unusual killing method: it bites directly through the skull of
mammalian
prey
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the ...
between the ears to deliver a fatal blow to the brain.
The modern jaguar's ancestors probably entered the Americas from
Eurasia
Eurasia (, ) is the largest continental area on Earth, comprising all of Europe and Asia. Primarily in the Northern and Eastern Hemispheres, it spans from the British Isles and the Iberian Peninsula in the west to the Japanese archipelag ...
during the
Early Pleistocene via the
land bridge
In biogeography, a land bridge is an isthmus or wider land connection between otherwise separate areas, over which animals and plants are able to cross and colonize new lands. A land bridge can be created by marine regression, in which sea ...
that once spanned the
Bering Strait. Today, the jaguar's range extends from the
Southwestern United States
The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that generally includes Arizona, New Mexico, and adjacent portions of California, Colorado, N ...
across
Mexico
Mexico ( Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guate ...
and much of
Central America
Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...
, the
Amazon rainforest and south to
Paraguay
Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...
and northern
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, t ...
. It inhabits a variety of forested and open terrains, but its preferred
habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...
is
tropical and subtropical moist broadleaf forest
Tropical and subtropical moist broadleaf forests (TSMF), also known as tropical moist forest, is a subtropical and tropical forest habitat type defined by the World Wide Fund for Nature.
Description
TSMF is generally found in large, disco ...
,
wetland
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...
s and wooded regions. It is adept at swimming and is largely a solitary, opportunistic, stalk-and-ambush
apex predator
An apex predator, also known as a top predator, is a predator at the top of a food chain, without natural predators of its own.
Apex predators are usually defined in terms of trophic dynamics, meaning that they occupy the highest trophic le ...
. As a
keystone species
A keystone species is a species which has a disproportionately large effect on its natural environment relative to its abundance, a concept introduced in 1969 by the zoologist Robert T. Paine. Keystone species play a critical role in maintaini ...
, it plays an important role in stabilizing
ecosystem
An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the syst ...
s and in regulating prey populations.
The jaguar is threatened by
habitat loss
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...
,
habitat fragmentation
Habitat fragmentation describes the emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat), causing population fragmentation and ecosystem decay. Causes of habitat fragmentation include geological proces ...
,
poaching
Poaching has been defined as the illegal hunting or capturing of wild animals, usually associated with land use rights.
Poaching was once performed by impoverished peasants for subsistence purposes and to supplement meager diets. It was set ag ...
for trade with its body parts and killings in
human–wildlife conflict
Human–wildlife conflict (HWC) refers to the negative interactions between human and wild animals, with undesirable consequences both for people and their resources, on the one hand, and wildlife and their habitats on the other ( IUCN 2020). HW ...
situations, particularly with
ranch
A ranch (from es, rancho/Mexican Spanish) is an area of land, including various structures, given primarily to ranching, the practice of raising grazing livestock such as cattle and sheep. It is a subtype of a farm. These terms are most oft ...
ers in Central and
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the souther ...
. It has been listed as
Near Threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify fo ...
on the
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...
since 2002. The wild population is thought to have declined since the late 1990s. Priority areas for jaguar
conservation
Conservation is the preservation or efficient use of resources, or the conservation of various quantities under physical laws.
Conservation may also refer to:
Environment and natural resources
* Nature conservation, the protection and managem ...
comprise 51 Jaguar Conservation Units (JCUs), defined as large areas inhabited by at least 50 breeding jaguars. The JCUs are located in 36 geographic regions ranging from Mexico to Argentina.
The jaguar has featured prominently in the mythology of
indigenous peoples of the Americas
The Indigenous peoples of the Americas are the inhabitants of the Americas before the arrival of the European settlers in the 15th century, and the ethnic groups who now identify themselves with those peoples.
Many Indigenous peoples of the A ...
, including those of the
Aztec
The Aztecs () were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec people included different ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl ...
and
Maya civilization
The Maya civilization () of the Mesoamerican people is known by its ancient temples and glyphs. Its Maya script is the most sophisticated and highly developed writing system in the pre-Columbian Americas. It is also noted for its art, ar ...
s.
Etymology
The word "jaguar" is possibly derived from the
Tupi-Guarani word meaning 'wild beast that overcomes its prey at a bound'.
[ In North America, the word is pronounced disyllabic , while in British English, it is pronounced with three syllables . Because that word also applies to other animals, ]indigenous peoples in Guyana
Indigenous peoples in Guyana, Native Guyanese, or Amerindian Guyanese are Guyanese people who are of indigenous ancestry. They comprise approximately 9.16% of Guyana's population. Amerindians are credited with the invention of the canoe, as we ...
call it , with the added sufix ''eté'', meaning "true beast".
"Onca" is derived from the Portuguese name for a spotted cat that is larger than a lynx
A lynx is a type of wild cat.
Lynx may also refer to:
Astronomy
* Lynx (constellation)
* Lynx (Chinese astronomy)
* Lynx X-ray Observatory, a NASA-funded mission concept for a next-generation X-ray space observatory
Places Canada
* Lynx, Ontar ...
; cf. ''ounce''. The word "panther" is derived from classical Latin
Classical Latin is the form of Literary Latin recognized as a literary standard by writers of the late Roman Republic and early Roman Empire. It was used from 75 BC to the 3rd century AD, when it developed into Late Latin. In some later pe ...
, itself from the ancient Greek
Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic p ...
().
Taxonomy and evolution
Taxonomy
In 1758, Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, ...
described the jaguar in his work ''Systema Naturae
' (originally in Latin written ' with the ligature æ) is one of the major works of the Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the system, now known as binomial nom ...
'' and gave it the scientific name ''Felis onca''.
In the 19th and 20th centuries, several jaguar type specimen
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the ...
s formed the basis for descriptions of subspecies.[ In 1939, ]Reginald Innes Pocock
Reginald Innes Pocock F.R.S. (4 March 1863 – 9 August 1947) was a British zoologist.
Pocock was born in Clifton, Bristol, the fourth son of Rev. Nicholas Pocock and Edith Prichard. He began showing interest in natural history at St. Edwar ...
recognized eight subspecies based on the geographic origins and skull morphology
Morphology, from the Greek and meaning "study of shape", may refer to:
Disciplines
*Morphology (archaeology), study of the shapes or forms of artifacts
*Morphology (astronomy), study of the shape of astronomical objects such as nebulae, galaxies, ...
of these specimens.
Pocock did not have access to sufficient zoological specimen
A zoological specimen is an animal or part of an animal preserved for scientific use.
Various uses are: to verify the identity of a (species), to allow study, increase public knowledge of zoology.
Zoological specimens are extremely diverse. Exampl ...
s to critically evaluate their subspecific status but expressed doubt about the status of several. Later consideration of his work suggested only three subspecies should be recognized. The description of ''P. o. palustris'' was based on a fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
skull.
By 2005, nine subspecies were considered to be valid
Validity or Valid may refer to:
Science/mathematics/statistics:
* Validity (logic), a property of a logical argument
* Scientific:
** Internal validity, the validity of causal inferences within scientific studies, usually based on experiments
** ...
taxa:
*''P. o. onca'' was a jaguar from Brazil.
*''P. o. peruviana'' was a jaguar skull from Peru.
*''P. o. hernandesii'' was a jaguar from Mazatlán
Mazatlán () is a city in the Mexican state of Sinaloa. The city serves as the municipal seat for the surrounding '' municipio'', known as the Mazatlán Municipality. It is located at on the Pacific coast, across from the southernmost tip ...
in Mexico.
*''P. o. palustris'' was a fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
jaguar mandible
In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower teeth in place. The mandible sits beneath the maxilla. It is the only movable bon ...
excavated in the Sierras Pampeanas
The Sierras Pampeanas (also called Central Sierras or Pampas Sierras) (English: Pampas Mountains) is a geographical region of Argentina.
The Sierras Pampeanas are a chain of mountains that rise sharply from the surrounding pampa region of ...
of Córdova District
Córdova District is one of sixteen Districts of Peru, districts of the province Huaytará Province, Huaytará in Peru. Instituto Nacional de Estadística e Informática. Banco de Información Distrital''. Retrieved April 11, 2008.
References ...
, Argentina.
*''P. o. centralis'' was a skull of a male jaguar from Talamanca, Costa Rica.
*''P. o. goldmani'' was a jaguar skin from Yohatlan in Campeche
Campeche (; yua, Kaampech ), officially the Free and Sovereign State of Campeche ( es, Estado Libre y Soberano de Campeche), is one of the 31 states which make up the 32 Federal Entities of Mexico. Located in southeast Mexico, it is bordered by ...
, Mexico.
*''P. o. paraguensis'' was a skull of a male jaguar from Paraguay.
*''P. o. arizonensis'' was a skin and skull of a male jaguar from the vicinity of Cibecue, Arizona
Cibecue ( apw, Dishchiiʼ Bikoh "Horizontally Red Valley/Canyon") is a census-designated place (CDP) in Navajo County, Arizona, United States, on the Fort Apache Indian Reservation. The population was 1,713 in the 2010 United States Census.
The ...
.
*''P. o. veraecrucis'' was a skull of a male jaguar from San Andrés Tuxtla
San Andrés Tuxtla is a city and municipality in the south of the Mexican state of Veracruz. The city is the largest in the Los Tuxtlas region. It was founded after an eruption of the San Martín Volcano pushed people into this valley during the e ...
in Mexico.
Reginald Innes Pocock placed the jaguar in the genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
''Panthera'' and observed that it shares several morphological features with the leopard
The leopard (''Panthera pardus'') is one of the five extant species in the genus '' Panthera'', a member of the cat family, Felidae. It occurs in a wide range in sub-Saharan Africa, in some parts of Western and Central Asia, Southern Russia ...
(''P. pardus''). He, therefore, concluded that they are most closely related to each other. Results of morphological and genetic
Genetic may refer to:
*Genetics, in biology, the science of genes, heredity, and the variation of organisms
**Genetic, used as an adjective, refers to genes
***Genetic disorder, any disorder caused by a genetic mutation, whether inherited or de nov ...
research indicate a clinal north–south variation between populations, but no evidence for subspecific differentiation. DNA analysis of 84 jaguar samples from South America revealed that the gene flow
In population genetics, gene flow (also known as gene migration or geneflow and allele flow) is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalen ...
between jaguar populations in Colombia was high in the past. Since 2017, the jaguar is considered to be a monotypic taxon
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...
, though the modern ''Panthera onca onca'' is still distinguished from two fossil subspecies, ''Panthera onca augusta'' and ''Panthera onca mesembrina''.
Evolution
The ''Panthera'' lineage
Lineage may refer to:
Science
* Lineage (anthropology), a group that can demonstrate its common descent from an apical ancestor or a direct line of descent from an ancestor
* Lineage (evolution), a temporal sequence of individuals, populatio ...
is estimated to have genetically diverged from the common ancestor
Common descent is a concept in evolutionary biology applicable when one species is the ancestor of two or more species later in time. All living beings are in fact descendants of a unique ancestor commonly referred to as the last universal comm ...
of the Felidae
Felidae () is the family of mammals in the order Carnivora colloquially referred to as cats, and constitutes a clade. A member of this family is also called a felid (). The term "cat" refers both to felids in general and specifically to the ...
around to . Some genetic analyses place the jaguar as a sister species
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and ...
to the lion with which it diverged , but other studies place the lion closer to the leopard.
The lineage of the jaguar appears to have originated in Africa and spread to Eurasia 1.95–1.77 mya. The modern species may have descended from ''Panthera gombaszoegensis
''Panthera gombaszoegensis'', also known as the European jaguar, is a ''Panthera'' species that lived from about 2.0 to 0.35 million years ago in Europe. The first fossils were excavated in 1938 in Gombasek, Slovakia.
More of its fossil remai ...
'', which is thought to have entered the American continent via Beringia
Beringia is defined today as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 72 degrees north latitude in the Chukchi Sea; and on the south by the tip ...
, the land bridge that once spanned the Bering Strait, though other authors have disputed the close relationship between ''P. gombaszoegensis'' (which is primarily known from Europe) and the modern jaguar. Fossils of modern jaguars have been found in North America dating to over 850,000 years ago. Results of mitochondrial DNA analysis of 37 jaguars indicate that current populations evolved between 510,000 and 280,000 years ago in northern South America and subsequently recolonized North and Central America after the extinction of jaguars there during the Late Pleistocene
The Late Pleistocene is an unofficial age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a stratigraphic perspective. It is intended to be the fourth division of the Pleistocene Epoch within ...
.
Two extinct subspecies of jaguar are recognized in the fossil record: the North American '' P. o. augusta'' and South American '' P. o. mesembrina''.
Description
The jaguar is a compact and muscular animal. It is the largest cat native to the Americas and the third largest in the world, exceeded in size only by the tiger and the lion. It stands tall at the shoulders.
Its size and weight vary considerably depending on sex and region: weights in most regions are normally in the range of . Exceptionally big males have been recorded to weigh as much as .
The smallest females from Middle America weigh about . It is sexually dimorphic
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...
, with females typically being 10–20% smaller than males. The length from the nose to the base of the tail varies from . The tail is long and the shortest of any big cat
The term "big cat" is typically used to refer to any of the five living members of the genus '' Panthera'', namely the tiger, lion, jaguar, leopard, and snow leopard.
Despite enormous differences in size, various cat species are quite simil ...
.
Its muscular legs are shorter than the legs of other ''Panthera'' species with similar body weight.
Size tends to increase from north to south. Jaguars in the Chamela-Cuixmala Biosphere Reserve
The Chamela-Cuixmala Biosphere Reserve is a biosphere reserve on the Pacific coast of the Mexican state of Jalisco. The park was founded in 1993 and covers 131.42 square kilometres in La Huerta Municipality. The land is mountainous and contains ...
on the Pacific coast of central Mexico weighed around .
Jaguars in Venezuela and Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
are much larger, with average weights of about in males and of about in females.
The jaguar's coat
A coat typically is an outer garment for the upper body as worn by either gender for warmth or fashion. Coats typically have long sleeves and are open down the front and closing by means of buttons, zippers, hook-and-loop fasteners, toggles ...
ranges from pale yellow to tan or reddish-yellow, with a whitish underside and covered in black spots. The spots and their shapes vary: on the sides, they become rosettes which may include one or several dots. The spots on the head and neck are generally solid, as are those on the tail where they may merge to form bands near the end and create a black tip. They are elongated on the middle of the back, often connecting to create a median stripe, and blotchy on the belly. These patterns serve as camouflage
Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the b ...
in areas with dense vegetation and patchy shadows.
Jaguars living in forests are often darker and considerably smaller than those living in open areas, possibly due to the smaller numbers of large, herbivorous prey in forest areas.
The jaguar closely resembles the leopard but is generally more robust, with stockier limbs and a more square head. The rosettes on a jaguar's coat are larger, darker, fewer in number and have thicker lines, with a small spot in the middle.
It has powerful jaws with the third-highest bite force of all felids, after the tiger and the lion.
It has an average bite force at the canine
Canine may refer to:
Zoology and anatomy
* a dog-like Canid animal in the subfamily Caninae
** '' Canis'', a genus including dogs, wolves, coyotes, and jackals
** Dog, the domestic dog
* Canine tooth, in mammalian oral anatomy
People with the ...
tip of 887.0 Newton
Newton most commonly refers to:
* Isaac Newton (1642–1726/1727), English scientist
* Newton (unit), SI unit of force named after Isaac Newton
Newton may also refer to:
Arts and entertainment
* ''Newton'' (film), a 2017 Indian film
* Newton ( ...
and a bite force quotient
Bite force quotient (BFQ) is a numerical value commonly used to represent the bite force of an animal, while also taking factors like the animal's size into account.
The BFQ is calculated as the regression of the quotient of an animal's bite f ...
at the canine tip of 118.6.
A jaguar can bite with a force of with the canine teeth and at the carnassial
Carnassials are paired upper and lower teeth modified in such a way as to allow enlarged and often self-sharpening edges to pass by each other in a shearing manner. This adaptation is found in carnivorans, where the carnassials are the modified ...
notch.
Color variation
Melanistic
The term melanism refers to black pigment and is derived from the gr, μελανός. Melanism is the increased development of the dark-colored pigment melanin in the skin or hair.
Pseudomelanism, also called abundism, is another variant of pi ...
jaguars are also known as black panther
A black panther is the melanistic colour variant of the leopard (''Panthera pardus'') and the jaguar (''Panthera onca''). Black panthers of both species have excess black pigments, but their typical rosettes are also present. They have been ...
s. The black morph
Morph may refer to:
Biology
* Morph (zoology), a visual or behavioral difference between organisms of distinct populations in a species
* Muller's morphs, a classification scheme for genetic mutations
* "-morph", a suffix commonly used in tax ...
is less common than the spotted one.
Black jaguars have been documented in Central and South America. Melanism in the jaguar is caused by deletions in the melanocortin 1 receptor
The melanocortin 1 receptor (MC1R), also known as melanocyte-stimulating hormone receptor (MSHR), melanin-activating peptide receptor, or melanotropin receptor, is a G protein–coupled receptor that binds to a class of pituitary peptide hormones ...
gene and inherited through a dominant allele
In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and ...
. Black jaguars occur at higher densities in tropical rainforest and are more active during the daytime. This suggests that melanism provides camouflage in dense vegetation with high illumination.[
In 2004, a camera trap in the ]Sierra Madre Occidental
The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwest–southeast through northwestern and western Mexico, and along the Gulf of California. The Sierra Madre is part of the American ...
mountains photographed the first documented black jaguar in Northern Mexico. Black jaguars were also photographed in Costa Rica's Alberto Manuel Brenes Biological Reserve
Alberto Manuel Brenes Biological Reserve is a nature reserve in the central part of Costa Rica. It is part of the Central Conservation Area; which protects tropical forest area near San Ramon. The reserve operates under the direction of the Uni ...
, in the mountains of the Cordillera de Talamanca
The Cordillera de Talamanca is a mountain range that lies in the southeast half of Costa Rica and the far west of Panama. Much of the range and the area around it is included in La Amistad International Park, which also is shared between the two ...
, in Barbilla National Park
Barbilla National Park is a National Park in the Caribbean La Amistad Conservation Area of Costa Rica located on the eastern slopes of the Cordillera de Talamanca. It protects forests as well as Laguna Ayil and Cerro Tigre and the Dantas River wa ...
and in eastern Panama
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Co ...
.
Distribution and habitat
In 1999, the jaguar's historic range at the turn of the 20th century was estimated at , stretching from the southern United States through Central America to southern Argentina. By the turn of the 21st century, its global range had decreased to about , with most declines in the southern United States, northern Mexico, northern Brazil, and southern Argentina.
Its present range extends from Mexico through Central America to South America comprising Belize
Belize (; bzj, Bileez) is a Caribbean and Central American country on the northeastern coast of Central America. It is bordered by Mexico to the north, the Caribbean Sea to the east, and Guatemala to the west and south. It also shares a wa ...
, Guatemala, Honduras, Nicaragua, Costa Rica, particularly on the Osa Peninsula, Panama
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Co ...
, Colombia, Venezuela, Guyana, Suriname, French Guiana, Ecuador, Peru, Bolivia, Brazil, Paraguay
Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...
and Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, t ...
. It is considered to be locally extinct in El Salvador and Uruguay.
Jaguars have been occasionally sighted in Arizona, New Mexico and Texas.
Between 2012 and 2015, a male Vagrancy (biology), vagrant jaguar was recorded in 23 locations in the Santa Rita Mountains.
The jaguar prefers dense forest and typically inhabits dry deciduous forests, tropical and subtropical moist broadleaf forests, rainforests and cloud forests in Central and South America; open, seasonally flooded wetland
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The ...
s, dry grassland and historically also oak forests in the United States. It has been recorded at elevations up to but avoids montane forests. It favors riverine habitat and swamps with dense vegetation cover. In the Mayan forests of Mexico and Guatemala, 11 GPS-collared jaguars preferred undisturbed dense habitat away from roads; females avoided even areas with low levels of human activity, whereas males appeared less disturbed by human population density. A young male jaguar was also recorded in the Semi-arid climate, semi-arid Sierra de San Carlos at a waterhole.
Former range
In the 19th century, the jaguar was still sighted at the North Platte River north of Longs Peak in Colorado, in coastal Louisiana, northern Arizona and New Mexico.
Multiple verified zoological reports of the jaguar are known in California, two as far north as Monterey, California, Monterey in 1814 and 1826. The only record of an active jaguar den with breeding adults and kittens in the United States was in the Tehachapi Mountains of California prior to 1860. The jaguar persisted in California until about 1860.[
The last confirmed jaguar in Texas was shot in 1948, southeast of Kingsville, Texas.
In Arizona, a female was shot in the White Mountains (Arizona), White Mountains in 1963. By the late 1960s, the jaguar was thought to have been extirpated in the United States. Arizona outlawed jaguar hunting in 1969, but by then no females remained, and over the next 25 years only two males were sighted and killed in the state. In 1996, a rancher and hunting guide from Douglas, Arizona came across a jaguar in the Peloncillo Mountains (Cochise County), Peloncillo Mountains and became a researcher on jaguars, placing trail cameras, which recorded four more jaguars.
]
Behavior and ecology
The jaguar is mostly active at night and during twilight.[
However, jaguars living in densely forested regions of the Amazon Rainforest and the Pantanal are largely active by day, whereas jaguars in the Atlantic Forest are primarily active by night.]
The activity pattern of the jaguar coincides with the activity of its main prey species. Jaguars are good swimmers and play and hunt in the water, possibly more than tigers. They have been recorded moving between islands and the shore. Jaguars are also good at climbing trees but do so less often than cougars.
Ecological role
The adult jaguar is an apex predator
An apex predator, also known as a top predator, is a predator at the top of a food chain, without natural predators of its own.
Apex predators are usually defined in terms of trophic dynamics, meaning that they occupy the highest trophic le ...
, meaning it is at the top of the food chain and is not preyed upon in the wild. The jaguar has also been termed a keystone species
A keystone species is a species which has a disproportionately large effect on its natural environment relative to its abundance, a concept introduced in 1969 by the zoologist Robert T. Paine. Keystone species play a critical role in maintaini ...
, as it is assumed that it controls the population levels of prey such as herbivorous and seed-eating mammals and thus maintains the structural integrity of forest systems.
However, field work has shown this may be natural variability, and the population increases may not be sustained. Thus, the keystone predator hypothesis is not accepted by all scientists.
The jaguar is sympatric with the cougar. In central Mexico, both prey on white-tailed deer, which makes up 54% and 66% of jaguar and cougar's prey, respectively. In northern Mexico, the jaguar and the cougar share the same habitat, and their diet overlaps dependent on prey availability. Jaguars seemed to prefer deer and calves. In Mexico and Central America, neither of the two cats are considered to be the dominant predator.
In South America, the jaguar is larger than the cougar and tends to take larger prey, usually over . The cougar's prey usually weighs between , which is thought to be the reason for its smaller size.
This situation may be advantageous to the cougar. Its broader prey niche, including its ability to take smaller prey, may give it an advantage over the jaguar in human-altered landscapes.[
]
Hunting and diet
The jaguar is an obligate carnivore and depends solely on flesh for its nutrient requirements. An analysis of 53 studies documenting the diet of the jaguar revealed that its prey ranges in weight from ; it prefers prey weighing , with the capybara and the giant anteater being the most selected. When available, it also preys on marsh deer, southern tamandua, collared peccary and black agouti.[ In floodplains, jaguars opportunistically take reptiles such as ]turtle
Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked ...
s and caimans. Consumption of reptiles appears to be more frequent in jaguars than in other big cats. One remote population in the Brazilian Pantanal is recorded to primarily feed on aquatic reptiles and fish.
The jaguar also preys on livestock in cattle ranch
A ranch (from es, rancho/Mexican Spanish) is an area of land, including various structures, given primarily to ranching, the practice of raising grazing livestock such as cattle and sheep. It is a subtype of a farm. These terms are most oft ...
ing areas where wild prey is scarce.
The daily food requirement of a captive jaguar weighing was estimated at of meat.[
The jaguar's bite force allows it to pierce the ]carapace
A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the und ...
s of the yellow-spotted Amazon river turtle and the yellow-footed tortoise. It employs an unusual killing method: it bites mammalian prey directly through the skull between the ears to deliver a fatal bite to the brain. It kills capybara by piercing its canine tooth, canine teeth through the temporal bones of its skull, breaking its zygomatic arch and mandible
In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower teeth in place. The mandible sits beneath the maxilla. It is the only movable bon ...
and penetrating its brain, often through the ears.
It has been hypothesized to be an adaptation to cracking open turtle shells; armored reptiles may have formed an abundant prey base for the jaguar following the late Pleistocene extinctions. However, this is disputed, as even in areas where jaguars prey on reptiles, they are still taken relatively infrequently compared to mammals in spite of their greater abundance.[
Between October 2001 and April 2004, 10 jaguars were monitored in the southern Pantanal. In the dry season from April to September, they killed prey at intervals ranging from one to seven days; and ranging from one to 16 days in the wet season from October to March.
The jaguar uses a stalk-and-ambush strategy when hunting rather than chasing prey. The cat will slowly walk down forest paths, listening for and stalking prey before rushing or ambushing. The jaguar attacks from cover and usually from a target's blind spot with a quick pounce; the species' ambushing abilities are considered nearly peerless in the animal kingdom by both indigenous people and field researchers and are probably a product of its role as an apex predator in several different environments. The ambush may include leaping into water after prey, as a jaguar is quite capable of carrying a large kill while swimming; its strength is such that carcasses as large as a Heifer (cow), heifer can be hauled up a tree to avoid flood levels. After killing prey, the jaguar will drag the carcass to a thicket or other secluded spot. It begins eating at the neck and chest. The heart and lungs are consumed, followed by the shoulders.
]
Social activity
The jaguar is generally Solitary animal, solitary except for females with cubs. In 1977, groups consisting of a male, female and cubs, and two females with two males were sighted several times in a study area in the Paraguay River valley.[ In some areas, males may form paired coalitions which together mark, defend and invade territories, find and mate with the same females and search for and share prey. A radio-collared female moved in a home range of , which partly overlapped with another female. The home range of the male in this study area overlapped with several females.]
The jaguar uses scrape marks, urine, and feces to Territorial marking, mark its territory.
The size of home ranges depends on the level of deforestation and human population density. The home ranges of females vary from in the Pantanal to in the Amazon to in the Atlantic Forest. Male jaguar home ranges vary from in the Pantanal to in the Amazon to in the Atlantic Forest and in the Cerrado.
Studies employing Global Positioning System, GPS telemetry in 2003 and 2004 found densities of only six to seven jaguars per in the Pantanal region, compared with 10 to 11 using traditional methods; this suggests the widely used sampling methods may inflate the actual numbers of individuals in a sampling area.[ Fights between males occur but are rare, and avoidance behavior has been observed in the wild.][ In one wetland population with degraded territorial boundaries and more social proximity, adults of the same sex are more tolerant of each other and engage in more friendly and co-operative interactions.][
The jaguar Roar (vocalization), roars/grunts for long-distance communication;] intensive bouts of counter-calling between individuals have been observed in the wild. This vocalization is described as "hoarse" with five or six guttural notes. prusten, Chuffing is produced by individuals when greeting, during Courtship, courting, or by a mother comforting her cubs. This sound is described as low intensity snorts, possibly intended to signal tranquility and passivity. Cubs have been recorded bleating, gurgling and mewing.
Reproduction and life cycle
In captivity, the female jaguar is recorded to reach sexual maturity at the age of about 2.5 years. Estrus lasts 7–15 days with an estrus cycle of 41.8 to 52.6 days. During estrus, she exhibits increased restlessness with rolling and prolonged vocalizations.
She is an induced ovulator but can also ovulate spontaneously.
Gestation lasts 91 to 111 days.
The male is sexually mature at the age of three to four years.
His mean ejaculate volume is 8.6±1.3 ml.
Generation time, Generation length of the jaguar is 9.8 years.
In the Pantanal, breeding pairs were observed to stay together for up to five days. Females had one to two cubs.
The young are born with closed eyes but open them after two weeks. Cubs are weaned at the age of three months but remain in the birth den for six months before leaving to accompany their mother on hunts.
Jaguars remain with their mothers for up to two years. They appear to rarely live beyond 11 years, but captive individuals may live 22 years.
In 2001, a male jaguar killed and partially consumed two cubs in Emas National Park. DNA paternity testing of blood samples revealed that the male was the father of the cubs. Two more cases of Infanticide (zoology), infanticide were documented in the northern Pantanal in 2013. To defend against infanticide, the female may hide her cubs and distract the male with courtship behavior.
Attacks on humans
The Spanish conquistadors feared the jaguar. According to Charles Darwin, the indigenous peoples of South America stated that people did not need to fear the jaguar as long as capybaras were abundant.
The first official record of a jaguar killing a human in Brazil dates to June 2008.
Two children were attacked by jaguars in Guyana.
The majority of known attacks on people happened when it had been cornered or wounded.
Threats
The jaguar is threatened by habitat loss, loss and habitat fragmentation, fragmentation of habitat, illegal killing in retaliation for livestock depredation and for illegal trade in jaguar body parts. It is listed as Near Threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify fo ...
on the IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...
since 2002, as the jaguar population has probably declined by 20–25% since the mid-1990s. Deforestation is a major threat to the jaguar across its range. Habitat loss was most rapid in drier regions such as the Argentine pampas, the arid grasslands of Mexico and the southwestern United States.
In 2002, it was estimated that the range of the jaguar had declined to about 46% of its range in the early 20th century. In 2018, it was estimated that its range had declined by 55% in the last century. The only remaining stronghold is the Amazon rainforest, a region that is rapidly being fragmented by deforestation.
Between 2000 and 2012, forest loss in the jaguar range amounted to , with fragmentation increasing in particular in corridors between Jaguar Conservation Units (JCUs).
By 2014, direct linkages between two JCUs in Bolivia were lost, and two JCUs in northern Argentina became completely isolated due to deforestation.
In Mexico, the jaguar is primarily threatened by poaching
Poaching has been defined as the illegal hunting or capturing of wild animals, usually associated with land use rights.
Poaching was once performed by impoverished peasants for subsistence purposes and to supplement meager diets. It was set ag ...
. Its habitat is fragmented in northern Mexico, in the Gulf of Mexico and the Yucatán Peninsula, caused by changes in land use, construction of roads and tourism infrastructure.
In Panama, 220 of 230 jaguars were killed in retaliation for predation on livestock between 1998 and 2014.
In Venezuela, the jaguar was extirpated in about 26% of its range in the country since 1940, mostly in dry savannas and unproductive scrubland in the northeastern region of Anzoátegui.
In Ecuador, the jaguar is threatened by reduced prey availability in areas where the expansion of the road network facilitated access of human hunters to forests.
In the Alto Paraná Atlantic forests, at least 117 jaguars were killed in Iguaçu National Park and the adjacent Misiones Province between 1995 and 2008.
Some Afro-Colombians in the Colombian Chocó Department hunt jaguars for consumption and sale of meat.
Between 2008 and 2012, at least 15 jaguars were killed by livestock farmers in central Belize.
The international trade of jaguar skins boomed between the end of the Second World War and the early 1970s.
Significant declines occurred in the 1960s, as more than 15,000 jaguars were yearly killed for their skins in the Brazilian Amazon alone; the trade in jaguar skins decreased since 1973 when the CITES, Convention on International Trade in Endangered Species was enacted.
Interview surveys with 533 people in the northwestern Bolivian Amazon revealed that local people killed jaguars out of fear, in retaliation, and for trade.
Between August 2016 and August 2019, jaguar skins and body parts were seen for sale in tourist markets in the Peruvian cities of Lima, Iquitos and Pucallpa.
Human-wildlife conflict, opportunistic hunting and hunting for trade in domestic markets are key drivers for killing jaguars in Belize and Guatemala.
Seizure reports indicate that at least 857 jaguars were involved in trade between 2012 and 2018, including 482 individuals in Bolivia alone; 31 jaguars were seized in China.
Between 2014 and early 2019, 760 jaguar fangs were seized that originated in Bolivia and were destined for China. Undercover investigations revealed that the smuggling of jaguar body parts is run by Chinese residents in Bolivia.
Conservation
The jaguar is listed on CITES Appendix I, which means that all international commercial trade in jaguars or their body parts is prohibited. Hunting jaguars is prohibited in Argentina, Brazil, Colombia, French Guiana, Honduras, Nicaragua, Panama, Paraguay, Suriname, the United States, and Venezuela. Hunting jaguars is restricted in Guatemala and Peru. In Ecuador, hunting jaguars is prohibited, and it is classified as threatened with extinction.
In Guyana, it is protected as an endangered species, and hunting it is illegal.
In 1986, the Cockscomb Basin Wildlife Sanctuary was established in Belize as the world's first protected area for jaguar conservation.
Jaguar Conservation Units
In 1999, field scientists from 18 jaguar range countries determined the most important areas for long-term jaguar conservation based on the status of jaguar population units, stability of prey base and quality of habitat. These areas, called "Jaguar Conservation Units" (JCUs), are large enough for at least 50 breeding individuals and range in size from ; 51 JCUs were designated in 36 geographic regions including:
* the Sierra Madre Occidental
The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwest–southeast through northwestern and western Mexico, and along the Gulf of California. The Sierra Madre is part of the American ...
and Sierra de Tamaulipas in Mexico
* the Selva Maya tropical forests extending over Mexico, Belize and Guatemala
* the Chocó–Darién moist forests from Honduras and Panama to Colombia
* Venezuelan Llanos
* northern Cerrado and Amazon basin in Brazil
* Tropical Andes in Bolivia and Peru
* Misiones Province in Argentina
Optimal routes of travel between core jaguar population units were identified across its range in 2010 to implement wildlife corridors that connect JCUs. These corridors represent areas with the shortest distance between jaguar breeding populations, require the least possible energy input of dispersal (ecology), dispersing individuals and pose a low mortality risk. They cover an area of and range in length from in Mexico and Central America and from in South America.
Cooperation with local landowners and municipal, state, or federal agencies is essential to maintain connected populations and prevent fragmentation in both JCUs and corridors.
Seven of 13 corridors in Mexico are functioning with a width of at least and a length of no more than . The other corridors may hamper passage, as they are narrower and longer.
In August 2012, the United States Fish and Wildlife Service set aside in Arizona and New Mexico for the protection of the jaguar. The Jaguar Recovery Plan was published in April 2019, in which Interstate 10 is considered to form the northern boundary of the Jaguar Recovery Unit in Arizona and New Mexico.
In Mexico, a national conservation strategy was developed from 2005 on and published in 2016.[ The Mexican jaguar population increased from an estimated 4,000 individuals in 2010 to about 4,800 individuals in 2018. This increase is seen as a positive effect of conservation measures that were implemented in cooperation with governmental and non-governmental institutions and landowners.
An evaluation of JCUs from Mexico to Argentina revealed that they overlap with high-quality habitats of about 1,500 mammals to varying degrees. Since co-occurring mammals benefit from the JCU approach, the jaguar has been called an umbrella species.
Central American JCUs overlap with the habitat of 187 of 304 regional endemic amphibian and reptile species, of which 19 amphibians occur only in the jaguar range.
]
Approaches
In setting up protected reserves, efforts generally also have to be focused on the surrounding areas, as jaguars are unlikely to confine themselves to the bounds of a reservation, especially if the population is increasing in size. Human attitudes in the areas surrounding reserves and laws and regulations to prevent poaching are essential to make conservation areas effective.
To estimate population sizes within specific areas and to keep track of individual jaguars, camera trapping and Telemetry#Fishery and wildlife research and management, wildlife tracking telemetry are widely used, and feces are sought out with the help of detection dogs to study jaguar health and diet.
Current conservation efforts often focus on educating ranch owners and promoting ecotourism. Ecotourism setups are being used to generate public interest in charismatic animals such as the jaguar while at the same time generating revenue that can be used in conservation efforts. A key concern in jaguar ecotourism is the considerable habitat space the species requires. If ecotourism is used to aid in jaguar conservation, some considerations need to be made as to how existing ecosystems will be kept intact, or how new ecosystems will be put into place that are large enough to support a growing jaguar population.
Conservationists and professionals in Mexico and the United States have established the Northern Jaguar Reserve in northern Mexico. Advocacy for reintroduction of the jaguar to its former range in Arizona and New Mexico have been supported by documentation of natural migrations by individual jaguars into the southern reaches of both states, the recency of extirpation from those regions by human action, and supportive arguments pertaining to biodiversity, ecological, human, and practical considerations.
In culture and mythology
In the pre-Columbian era, pre-Columbian Americas, the jaguar was a symbol of power and strength. In the Andes, a jaguar cult disseminated by the early Chavín culture became accepted over most of today's Peru by 900 Before Christ, BC. The later Moche (culture), Moche culture in northern Peru used the jaguar as a symbol of power in many of their ceramics. In the Muisca religion in Altiplano Cundiboyacense, the jaguar was considered a sacred animal, and people dressed in jaguar skins during religious rituals.
The skins were traded with peoples in the nearby Orinoquía Region.
The name of the Muisca rulers, Muisca ruler Nemequene was derived from the Chibcha language, Chibcha words ''nymy'' and ''quyne'', meaning "force of the jaguar".
Sculptures with "Olmec were-jaguar" motifs were found on the Yucatán Peninsula in Veracruz and Tabasco; they show stylized jaguars with half-human faces. In the later Maya civilization
The Maya civilization () of the Mesoamerican people is known by its ancient temples and glyphs. Its Maya script is the most sophisticated and highly developed writing system in the pre-Columbian Americas. It is also noted for its art, ar ...
, the jaguar was believed to facilitate communication between the living and the dead and to protect the royal household. The Maya saw these powerful felines as their companions in the spiritual world, and several Maya rulers bore names that incorporated the Mayan word for jaguar ''b'alam'' in many of the Mayan languages. ''Balam'' remains a common Maya surname, and it is also the name of Chilam Balam, a legendary author to whom are attributed 17th and 18th-centuries Maya miscellanies preserving much important knowledge. Remains of jaguar bones were discovered in a burial site in Guatemala, which indicates that Mayans may have kept jaguars as pets.
The Aztec
The Aztecs () were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec people included different ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl ...
civilization shared this image of the jaguar as the representative of the ruler and as a warrior. The Aztecs formed an elite warrior class known as the Jaguar warrior. In Aztec mythology, the jaguar was considered to be the totem animal of the powerful deities Tezcatlipoca and Tepeyollotl.
A conch shell gorget depicting a jaguar was found in a burial mound in Benton County, Missouri. The gorget shows evenly-engraved lines and measures .
Rock drawings made by the Hopi, Anasazi and Pueblo all over the desert and chaparral regions of the American Southwest show an explicitly spotted cat, presumably a jaguar, as it is drawn much larger than an ocelot.
The jaguar is also used as a symbol in contemporary culture. It is the List of national animals, national animal of Guyana and is featured in its Coat of arms of Guyana, coat of arms.
See also
* List of largest cats
References
External links
*
*
People and Jaguars a Guide for Coexistence
Felidae Conservation Fund
*
{{Authority control
Jaguars,
Apex predators
Big cats
Carnivorans of Brazil
ESA endangered species
Extant Middle Pleistocene first appearances
Fauna of the Amazon
Fauna of the Cerrado
Fauna of the Pantanal
Fauna of the Southwestern United States
Felids of Central America
Felids of North America
Felids of South America
Mammals described in 1758
Near threatened animals
Near threatened biota of North America
Near threatened biota of South America
Panthera, onca
Pleistocene mammals of North America
Pleistocene mammals of South America
Taxa named by Carl Linnaeus