The Pythonidae, commonly known as pythons, are a
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
of
nonvenomous snake
Snakes are elongated, limbless, carnivorous reptiles of the suborder Serpentes . Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more j ...
s found in Africa, Asia, and Australia. Among its members are some of the largest snakes in the world. Ten
genera and 42
species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...
are currently recognized.
Distribution and habitat
Pythons are found in
sub-Saharan Africa,
Nepal
Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne,
सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is ma ...
,
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
,
Bangladesh
Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the List of countries and dependencies by population, eighth-most populous country in the world, with a population exceeding 165 million pe ...
,
Sri Lanka
Sri Lanka (, ; si, ශ්රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...
,
Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...
, southeastern
Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
, southern
China, the
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no),
* bik, Republika kan Filipinas
* ceb, Republika sa Pilipinas
* cbk, República de Filipinas
* hil, Republ ...
and
Australia.
[
In the United States, an introduced population of Burmese pythons, ''Python bivittatus'', has existed as an ]invasive species
An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adv ...
in the Everglades National Park since the late 1990s.
Common names
* Sinhala - පිඹුරා (''Pimbura'')
*Telugu
Telugu may refer to:
* Telugu language, a major Dravidian language of India
*Telugu people, an ethno-linguistic group of India
* Telugu script, used to write the Telugu language
** Telugu (Unicode block), a block of Telugu characters in Unicode
S ...
- కొండచిలువ (Kondachiluva)
* Odia - ଅଜଗର (Ajagara)
*Malayalam
Malayalam (; , ) is a Dravidian language spoken in the Indian state of Kerala and the union territories of Lakshadweep and Puducherry ( Mahé district) by the Malayali people. It is one of 22 scheduled languages of India. Malayalam wa ...
- പെരുമ്പാമ്പ് (perumpāmp)
*Hindi
Hindi (Devanāgarī: or , ), or more precisely Modern Standard Hindi (Devanagari: ), is an Indo-Aryan languages, Indo-Aryan language spoken chiefly in the Hindi Belt region encompassing parts of North India, northern, Central India, centr ...
- अजगर ('Ajgar')
Conservation
Many species have been hunted aggressively, which has greatly reduced the population of some, such as the Indian python, ''Python molurus''.
Behavior
Most members of this family are ambush predators, in that they typically remain motionless in a camouflaged position, and then strike suddenly at passing prey. Attacks on humans, although known to occur, are extremely rare.
Feeding
Pythons use their sharp, backward-curving teeth, four rows in the upper jaw, two in the lower, to grasp prey which is then killed by constriction; after an animal has been grasped to restrain it, the python quickly wraps a number of coils around it. Death occurs primarily by cardiac arrest.
Larger specimens usually eat animals about the size of a house cat, but larger food items are known; some large Asian species have been known to take down adult deer
Deer or true deer are hoofed ruminant mammals forming the family Cervidae. The two main groups of deer are the Cervinae, including the muntjac, the elk (wapiti), the red deer, and the fallow deer; and the Capreolinae, including the ...
, and the African rock python, ''Python sebae'', has been known to eat antelope. In 2017, there was a recorded case of a human
Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, ...
devoured by a python in Sulawesi, Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...
. All prey is swallowed whole, and may take several days or even weeks to fully digest.
Even the larger species, such as the reticulated python, ''Malayopython reticulatus'', do not crush their prey to death; in fact, prey is not even noticeably deformed before it is swallowed. The speed with which the coils are applied is impressive and the force they exert may be significant, but death is caused by cardiac arrest.
Reproduction
Pythons are oviparous. This sets them apart from the family Boidae (boas), most of which bear live young ( ovoviviparous). After they lay their eggs, females typically incubate them until they hatch. This is achieved by causing the muscles to "shiver", which raises the temperature of the body to a certain degree, and thus that of the eggs. Keeping the eggs at a constant temperature is essential for healthy embryo development. During the incubation period, females do not eat and leave only to bask to raise their body temperature.
Captivity
Most species in this family are available in the exotic pet trade. However, caution must be exercised with the larger species, as they can be dangerous; rare cases of large specimens killing their owners have been documented.
Taxonomy
Obsolete classification schemes—such as that of Boulenger Boulenger is a surname. Notable people with the surname include:
* Benjamin Boulenger (born 1990), French footballer
* Edward George Boulenger (1888–1946), British zoologist, director of aquarium at London Zoo
* George Albert Boulenger (1858–1 ...
(1890)—place pythons in Pythoninae
The Pythonidae, commonly known as pythons, are a family of nonvenomous snakes found in Africa, Asia, and Australia. Among its members are some of the largest snakes in the world. Ten genera and 42 species are currently recognized.
Distributi ...
, a subfamily of the boa family, Boidae.[ However, despite a superficial resemblance to boas, pythons are more closely related to sunbeam snakes ('' Xenopeltis'') and burrowing pythons ('' Loxocemus'').
]
Genera
Relationship with humans
Poaching pythons
Poaching of pythons is a lucrative business with the global python skin trade being an estimated US$1 billion as of 2012. Pythons are poached for their meat, mostly consumed locally as bushmeat and their skin, which is sent to Europe and North America for manufacture of accessories like bags, belts and shoes. The demand for poaching is increased because python farming is very expensive.
In Cameroon
Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west- central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; th ...
bushmeat markets, the African Rock Python is commonly sold for meat and is very expensive at US$175.[ The poaching of the pythons is illegal in ]Cameroon
Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west- central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; th ...
under their wildlife law, but there is little to no enforcement. In Kenya
)
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, there has been an increase in snake farms to address the demand for snake skin
Snakeskin may either refer to the skin of a live snake, the shed skin of a snake after molting, or to a type of leather that is made from the hide of a dead snake. Snakeskin and scales can have varying patterns and color formations, providing prot ...
internationally, but there are health concerns for the workers, and danger due to poachers coming to the farms to hunt the snakes.
Pythons and human health
While pythons are not venomous, they do carry a host of potential health issues for humans. Pythons are disease vectors for multiple illness, including Salmonella, Chlamydia
Chlamydia, or more specifically a chlamydia infection, is a sexually transmitted infection caused by the bacterium '' Chlamydia trachomatis''. Most people who are infected have no symptoms. When symptoms do appear they may occur only several w ...
, Leptospirosis, Aeromoniasis, Campylobacteriosis, and Zygomycosis. These diseases may be transmitted to humans through excreted waste, open wounds, and contaminated water. A 2013 study found that Reptile-Associated Salmonella (RAS) is most common in young children who had been in contact with invasive pythons, with symptoms including "sepsis
Sepsis, formerly known as septicemia (septicaemia in British English) or blood poisoning, is a life-threatening condition that arises when the body's response to infection causes injury to its own tissues and organs. This initial stage is foll ...
, meningitis, and bone and joint infection".
Pythons are also integrated into some aspects of African health and belief use, often with the added risk of contacting zoonotic diseases. Python bodies and blood are used for African traditional medicines and other belief uses as well, one in-depth study of all animals used by the Yorubas of Nigeria for traditional medicine found that the African Python is used to cure rheumatism, snake poison, appeasing witches, and accident prevention.[
Python habitats, diets, and invasion into new areas also impact human health and prosperity. A University of Florida Institute of Food and Agriculture Sciences study found that the Burmese Python, as an invasive species, enters new habitats and eats an increasing number of mammals, leaving limited species for mosquitoes to bite, forcing them to bite disease-carrying hispid cotton rats and then infect humans with the Everglades Virus, a dangerous infection that is carried by very few animals. While direct human-python interactions can be potentially dangerous, the risk of zoonotic diseases is always a concern, whether considering medical and belief use in Nigeria or when addressing invasive species impacts in Florida.
]
Traditional use
Skin
Python skin has traditionally been used as the attire of choice for medicine men and healers. Typically, South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring count ...
n Zulu traditional healers will use python skin in ceremonial regalia.[ Pythons are viewed by the Zulu tradition to be a sign of power. This is likely why the skin is worn by traditional healers. Healers are seen as all-powerful since they have a wealth of knowledge, as well as accessibility to the ancestors.][
]
Fat
Typically, species are attributed to healing various ailments based on their likeliness to a specific bodily attribute. For example, in many cultures, the python is seen as a strong and powerful creature. As a result, pythons are often prescribed as a method of increasing strength.[ It is very common for the body fat of pythons to be used to treat a large variation of issues such as joint pain, rheumatic pain, toothache and ]eye sight
Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflecte ...
. Additionally, python fat has been used to treat those suffering from mental illnesses like psychosis. Their calm nature is thought to be of use to treat combative patients. The fat of the python is rubbed onto the body part that is in pain. To improve mental illnesses, it is often rubbed on the temple.[ The existence of evidence for genuine anti inflammatory and anti-microbial properties of the refined 'snake oil' ironic with respect to the expression "snake oil salesman".
]
Blood
Python blood plays another important role in traditional medicine
Traditional medicine (also known as indigenous medicine or folk medicine) comprises medical aspects of traditional knowledge that developed over generations within the folk beliefs of various societies, including indigenous peoples, before th ...
. Many believe that python blood prevents the accumulation of fatty acid
In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, ...
s, triglycerides and lipid
Lipids are a broad group of naturally-occurring molecules which includes fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E and K), monoglycerides, diglycerides, phospholipids, and others. The functions of lipids incl ...
s from reaching critically high levels.[ Additionally, their blood has been used as a source of iron for people who are anemic, which helps reduce fatigue.][''[''The sources were not specific on the way this blood is administered; however, due to the use of snake blood in traditional treatments in other parts of the world for similar causes, it is likely that the patient drinks the blood in order to feel the effects.
]
Feces
The Sukuma Tribe of Tanzania have been known to use python feces in order to treat back pain. The feces are frequently mixed with a little water, placed on the back, and left for two to three days.
Organs
In Nigeria, the gallbladder and liver
The liver is a major organ only found in vertebrates which performs many essential biological functions such as detoxification of the organism, and the synthesis of proteins and biochemicals necessary for digestion and growth. In humans, it ...
of a python are used to treat poison or bites from other snakes.[ The python head has been used to "appease witches". Many traditional African cultures believe that they can be cursed by witches. In order to reverse spells and bad luck, traditional doctors will prescribe python heads.]
Folklore
In northwestern Ghana
Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in Ghana–Ivory Coast border, the west, Burkina ...
, people see pythons as a savior and have taboos to prevent the snake from being harmed or eaten. Their folklore states that this is because a python once helped them flee from their enemies by transforming into a log to allow them to cross a river.
In Botswana
Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label= Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kal ...
, San ritual practices surrounding pythons date back 70,000 years. In San mythology the python is a sacred creature that is highly respected. They believe that mankind was made by a python that moved in between hills to create stream beds.
In Benin
Benin ( , ; french: Bénin , ff, Benen), officially the Republic of Benin (french: République du Bénin), and formerly Dahomey, is a country in West Africa. It is bordered by Togo to the west, Nigeria to the east, Burkina Faso to the nort ...
, Vodun practitioners believe that pythons symbolize strength and the spirit of Dagbe Yoruba
The Yoruba people (, , ) are a West African ethnic group that mainly inhabit parts of Nigeria, Benin, and Togo. The areas of these countries primarily inhabited by Yoruba are often collectively referred to as Yorubaland. The Yoruba consti ...
]. Annually, people sacrifice animals and proclaim their sins to pythons that are kept inside temples.
References
Notes
Citations
External links
*
{{Authority control
Snake families
Taxa named by Leopold Fitzinger
Snakes