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Black And White Ruffed Lemur
The black-and-white ruffed lemur (''Varecia variegata'') is an endangered species of ruffed lemur, one of two which are endemic to the island of Madagascar. Despite having a larger range than the red ruffed lemur, it has a much smaller population that is spread out, living in lower population densities and reproductively isolated. It also has less coverage and protection in large national parks than the red ruffed lemur. Three subspecies of black-and-white ruffed lemur have been recognized since the red ruffed lemur was elevated to species status in 2001. Together with the red ruffed lemur, they are the largest extant members of the family Lemuridae, ranging in length from and weighing between . They are arboreal, spending most of their time in the high canopy of the seasonal rainforests on the eastern side of the island. They are also diurnal, active exclusively in daylight hours. Quadrupedal locomotion is preferred in the trees and on the ground, and suspensory behavior i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Kerr (writer)
Robert Kerr (20 October 1757 – 11 October 1813) was a Scottish surgeon, writer on scientific and other subjects, and translator. Life Kerr was born in 1757 in Bughtridge, Roxburghshire, the son of James Kerr, a jeweller, who served as MP for Edinburgh 1747–1754, and his wife Elizabeth. He was sent to the High School in Edinburgh. He studied medicine at the University of Edinburgh and practised at the Edinburgh Foundling Hospital as a surgeon. He was elected a Fellow of the Royal Society of Edinburgh in 1788. His proposers were Alexander Fraser Tytler, James Russell and Andrew Dalzell. At this time, he lived at Foresters Wynd off the Royal Mile in Edinburgh. He translated several scientific works into English, such as Antoine Lavoisier's work of 1789, '' Traité Élémentaire de Chimie'', published under the title ''Elements of Chemistry in a New Systematic Order containing All the Modern Discoveries'', in 1790. In 1792, he published ''The Animal Kingdom'', the first tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suspensory Behavior
Suspensory behaviour is a form of arboreal locomotion or a feeding behavior that involves hanging or suspension of the body below or among tree branches. This behavior enables faster travel while reducing path lengths to cover more ground when travelling, searching for food and avoiding predators. Different types of suspensory behaviour include brachiation, climbing, and bridging. These mechanisms allow larger species to distribute their weight among smaller branches rather than balancing above these weak supports. Primates and sloths are most commonly seen using these behaviours, however, other animals such as bats may be seen hanging below surfaces to obtain food or when resting. Biomechanics In primates and sloths Animals who exhibit suspensory behaviour have similar mechanisms to perform this action and often involve many different parts of their body like the trunk, shoulders and many other features of their upper body. Typically, these animals have an overall dorso-ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Critically Endangered
An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of the 157,190 species currently on the IUCN Red List, 9,760 of those are listed as critically endangered, with 1,302 being possibly extinct and 67 possibly extinct in the wild. The IUCN Red List provides the public with information regarding the conservation status of animal, fungi, and plant species. It divides various species into seven different categories of conservation that are based on habitat range, population size, habitat, threats, etc. Each category represents a different level of global extinction risk. Species that are considered to be critically endangered are placed within the "Threatened" category. As the IUCN Red List does not consider a species extinct until extensive targeted surveys have been conducted, species that a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estrous Cycle
The estrous cycle (, originally ) is a set of recurring physiological changes induced by reproductive hormones in females of mammalian subclass Theria. Estrous cycles start after sexual maturity in females and are interrupted by anestrous phases, otherwise known as "rest" phases, or by pregnancies. Typically, estrous cycles repeat until death. These cycles are widely variable in duration and frequency depending on the species.Bronson, F. H., 1989. Mammalian Reproductive Biology. University of Chicago Press, Chicago, IL, USA. Some animals may display bloody vaginal discharge, often mistaken for menstruation. Many mammals used in commercial agriculture, such as cattle and sheep, may have their estrous cycles artificially controlled with hormonal medications for optimum productivity. The male equivalent, seen primarily in ruminants, is called rut. Differences from the menstrual cycle Mammals share the same reproductive system, including the regulatory hypothalamic system that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fission–fusion Society
In ethology, fission–fusion society is one in which the size and composition of the social group change as time passes and animals move throughout the environment; animals merge into a group (fusion)—e.g. sleeping in one place—or split (fission)—e.g. foraging in small groups during the day. For species that live in fission–fusion societies, group composition is a dynamic property. The change in composition, subgroup size, and dispersion of different groups are 3 main elements of a fission-fusion society. This social organization is found in several primates, elephants, cetaceans, ungulates, social carnivores, some birds and some fish. Species Fission-fusion societies occur among many different species of primates (e.g. chimpanzees, orangutans, and humans), elephants (e.g. forest elephants, African elephants), and bats (e.g. northern long-eared bats). The change in composition, subgroup size, and dispersion of different groups are 3 main elements of a fission-fusion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harungana Madagascariensis
''Harungana madagascariensis'' is a flowering plant found in Madagascar that is commonly known as the dragon's blood tree, orange-milk tree or haronga. Description The haronga is a small, bushy tree that usually ranges from 4 m to 7 m in height, but sometimes it can grow up to 25 meters. The branches stem out from a cylindrical trunk. Its crown appears to be golden-green color. Bole is always angular and forked. Bark appears to be maroon-colored and it is vertically fissured. The scales are vertically arranged and can be flaked off easily. The tree can be immediately identified by its almost fluorescent orange latex from strips that were peeled off from the stem. The orange latex discharges when leaves are snapped off or branches are broken. Majority of tree surface is covered with stellate hairs. When damaged, the bark exudes orange latex. Its leaves are opposite, simple and ovate. leaf blades 6-20 by 3–10 cm. leaves appear to be glossy. Leaf blade underside i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protorhus
''Protorhus'' is a small genus of Afrotropical trees in the family Anacardiaceae. It is dioecious, with male and female flowers on separate plants. Taxonomy ''Protorhus'' is placed in tribe Rhoeae, subfamily Anacardioideae of the family Anacardiaceae. The genus '' Abrahamia'' with 19 Madagascan taxa was separated from ''Protorhus'' in 2004.(Pell 2004) Species The species are: * '' Protorhus fulva'' Engl. – Madagascar * '' Protorhus longifolia'' (Bernh.) Engl. – South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ... * '' Protorhus thouarsii'' Formerly listed; * ''Protorhus buxifolia'' H. Perrier, transferred to '' Abrahamia buxifolia'' (H. Perrier) Randrian. & Lowry References Bibliography * {{Taxonbar, from=Q9063326 Anacardiaceae genera Dioecious plant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysophyllum Boivinianum
''Gambeya boiviniana'', commonly known as ''famelona'', is species of evergreen tree native to Madagascar and the Comoro Islands. Range and habitat ''Gambeya boiviniana'' ranges through eastern, northern, and northwestern Madagascar and the Comoro Islands, between sea level and 1,750 meters elevation. It is native to the lowland rain forests of eastern Madagascar, the humid montane forests of Madagascar's Central Highlands, the montane forests of Montagne d'Ambre on Madagascar's northern tip, and the subhumid lowland forests of the Sambirano region in northwestern Madagascar. It is also found in the Comoros The Comoros, officially the Union of the Comoros, is an archipelagic country made up of three islands in Southeastern Africa, located at the northern end of the Mozambique Channel in the Indian Ocean. Its capital and largest city is Moroni, .... References {{taxonbar, from = Q81735516 Chrysophylloideae Trees of Madagascar Flora of the Comoros Flora of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ravensara
''Cryptocarya'' is a genus of about 360 species of flowering plants in the laurel family, Lauraceae. Most species are trees, occasionally shrubs, distributed through the Neotropical, Afrotropical, Indomalayan, and Australasian realms. Most plants in the genus ''Cryptocarya'' have leaves arranged alternately along the stems, small flowers with 6 tepals, stamens in 2 rows, the inner row alternating with staminodes, and the fruit is a drupe. Description Plants in the genus ''Cryptocarya'' are trees, occasionally shrubs, the leaves usually arranged alternately along the branches. The leaves are petiolate and pinnately-veined. The flowers are arranged in cymes, racemes or panicles in leaf axils usually at the ends of branches and often appearing as if on the ends of the branches. The flowers have both male and female parts, with 6 tepals usually erect as the flower opens, and 9 stamens in 2 rows, the inner row of 3 alternating with staminodes. The ovary is sessile, usually with an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daydream (36684729085)
Daydreaming is a stream of consciousness that detaches from current external tasks when one's attention becomes focused on a more personal and internal direction. Various names of this phenomenon exist, including mind-wandering, fantasies, and spontaneous thoughts. There are many types of daydreams – however, the most common characteristic to all forms of daydreaming meets the criteria for mild dissociation. In addition, the impacts of the various types of daydreams are not identical. While some are disruptive and deleterious, others may be beneficial to some degree. The term ''daydreaming'' is derived from clinical psychologist Jerome L. Singer, whose research created the foundation for nearly all subsequent modern research. The terminologies assigned by modern researchers brings about challenges centering on identifying the common features of daydreaming and building collective work among researchers. Characteristics and types of daydreaming Daydreaming consists of se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated as subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific name, infraspecific ranks, such as variety (botany), variety, may be named. In bacteriology and virology, under standard International Code of Nomenclature of Prokaryotes, bacterial nomenclature and virus clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
