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Microgale Mergulus
The web-footed tenrec, Malagasy otter shrew, or aquatic tenrec (''Microgale mergulus'') is the only known semiaquatic tenrec (the related African otter shrews have similar habits), and is found in eastern Madagascar, especially in and around Ranomafana National Park. It grows to between , and was once thought to be extinct. It feeds on crabs, aquatic insects, and crayfish. The population is considered vulnerable. It was formerly placed in the monotypic genus ''Limnogale'', but has been moved to ''Microgale'' based on molecular data showing it to be deeply nested within the latter. Life history ''Microgale mergulus'' is strictly nocturnal, spending the day in stream side burrows, only emerging at night to hunt. Nocturnal movements appear to be restricted to waterways but include movements away from burrows and diving. Radio collar tracking has shown that some individuals are known to utilize stream channels as much as 1160 meters in length, while others may only patrol 500 meters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List Of Threatened Species
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 an inventory of the global conservation status and extinction risk of biological species. A series of Regional Red Lists, which assess the risk of extinction to species within a political management unit, are also produced by countries and organizations. The goals of the Red List are to provide scientifically based information on the status of species and subspecies at a global level, to draw attention to the magnitude and importance of threatened biodiversity, to influence national and international policy and decision-making, and to provide information to guide actions to conserve biological diversity. Major species assessors include BirdLife International, the Institute of Zoology (the research division of the Zoological Society of London), the World Conservation Monitoring Centre, and many Specialist Groups within th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichoptera
The caddisflies (order Trichoptera) are a group of insects with aquatic larvae and terrestrial adults. There are approximately 14,500 described species, most of which can be divided into the suborders Integripalpia and Annulipalpia on the basis of the adult mouthparts. Integripalpian larvae construct a portable casing to protect themselves as they move around looking for food, while annulipalpian larvae make themselves a fixed retreat in which they remain, waiting for food to come to them. The affinities of the small third suborder Spicipalpia are unclear, and Molecular phylogenetics, molecular analysis suggests it may not be monophyletic. Also called sedge-flies or rail-flies, the adults are small moth-like insects with two pairs of hairy membranous insect wing, wings. They are closely related to the Lepidoptera (moths and butterflies) which have scales on their wings; the two orders together form the superorder Amphiesmenoptera. The aquatic larvae are found in a wide variety o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Shrew Tenrec
The northern shrew tenrec (''Microgale jobihely'') is a species of mammal in the family Tenrecidae. It is endemic to Madagascar, where it has a restricted disjoint range in two locations 485 km apart in the north and east of the island. In the north, it is found on the southwestern slopes of the Tsaratanana Massif at elevations from 1420 to 1680 m. In central eastern Madagascar, it is found in the Ambatovy Forest. Its natural habitat is montane forest. The species is most closely related to the widely distributed ''M. cowani''. This tenrec is threatened by deforestation from agricultural conversion, lumbering and mining Mining is the Resource extraction, extraction of valuable geological materials and minerals from the surface of the Earth. Mining is required to obtain most materials that cannot be grown through agriculture, agricultural processes, or feasib .... References Afrosoricida Mammals of Madagascar Mammals described in 2006 {{afrosoricida-stu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giant Golden Mole
The giant golden mole (''Chrysospalax trevelyani'') is a small mammal found in Africa. At in length, it is the largest of the golden mole species. This mole (animal), mole has dark, glossy brown fur; the name ''golden'' comes from the Greek language, Greek word for green-gold, also the source of the name of the family, Golden mole, Chrysochloridae. Characteristics The giant golden mole has a Fossorial, subterranean lifestyle. It has large claws around long and across the base, powerful forelimbs, no external tail or ears, wedge-shaped head, leather pad, and skin covering the eyes. It is approximately in length and in weight. Its skin is dark and brown on the upper parts and faded on the underparts, sometimes with a darker line down the mid-throat. Its coloration is slightly darker on the head, with two dull yellow patches where the eyes would be, and a yellow patch around the ear openings. Its hair is longer and coarser than any other species of golden mole: about long, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giant Otter Shrew
The giant otter shrew (''Potamogale velox'') is a semiaquatic, carnivorous afrotherian mammal. It is found in the main rainforest block of central Africa from Nigeria to Zambia, with a few isolated populations in Kenya and Uganda. It lives in streams, wetlands and slow flowing larger rivers. It is the Monotypic taxon, only species in the genus ''Potamogale''. Otter shrews are most closely related to the tenrecs of Madagascar. They are nocturnal carnivores that feed on aquatic animals. Despite its name, the giant otter shrew is neither a true shrew (Soricidae) or otter (Lutrinae). The common name refers to their resemblance to otters with their flat face, stiff whiskers, and muscular tails, and to their overall superficial similarity to true shrews. Description The giant otter shrew is a mammal superficially similar to an otter in appearance. It is characterized by a long, flat tail, which it uses for swimming by sideways undulation like a fish. It has a muzzle covered with brist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamogalidae
Potamogalidae is the family of "otter shrews", a group of semiaquatic riverine afrotherian mammals indigenous to sub-Saharan Africa. They are most closely related to the tenrecs of Madagascar, from which they are thought to have split about 47–53 million years ago. They were formerly considered a subfamily of Tenrecidae. All otter shrews are carnivorous, preying on any aquatic animal they can find with their sensitive whiskers, particularly insects. As their common name suggests, they bear a strong, but superficial resemblance to true otters to which they are not closely related, nor are they closely related to true shrews. They move through the water by undulating their tail in a side-to-side motion similar to the motions made by a crocodile swimming. Morphology Otter shrews have small eyes and ears, consistent with the features of nearly all shrews. They have a broad, flat, muzzle that is substantially covered with sensitive whiskers and ends in a leathery pad. The margin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tenrecinae
Tenrecinae is a Tenrecidae, tenrec subfamily endemic to the island of Madagascar. It contains the largest species in the family, ''Tenrec ecaudatus''. All members of the genus possess Spine (zoology), spines, analogous to those of hedgehogs, for defense against predators. Tenrecinae is thought to have split from the lineages of all other extant tenrecs about 36 million years (Megaannum, Ma) ago. The deepest phylogenetic split within the subfamily, that between two clades composed of ''Echinops'' plus ''Setifer'' and ''Hemicentetes'' plus ''Tenrec'', is thought to have occurred about 26 Ma ago. In turn, ''Hemicentetes'' is thought to have diverged from ''Tenrec'' about 16 Ma ago, and ''Echinops'' from ''Setifer'' about 10 Ma ago. Extant species Subfamily Tenrecinae * Tribe: Setiferini ** Genus ''Lesser hedgehog tenrec, Echinops'' *** Lesser hedgehog tenrec (''E. telfairi'') ** Genus ''Setifer'' *** Greater hedgehog tenrec (''S. setosus'') * Tribe: Tenrecini ** Genus ''Hemicent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megaannum
A year is a unit of time based on how long it takes the Earth to orbit the Sun. In scientific use, the tropical year (approximately 365 solar days, 5 hours, 48 minutes, 45 seconds) and the sidereal year (about 20 minutes longer) are more exact. The modern calendar year, as reckoned according to the Gregorian calendar, approximates the tropical year by using a system of leap years. The term 'year' is also used to indicate other periods of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phasessee lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons are gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature (journal)
''Nature'' is a British weekly scientific journal founded and based in London, England. As a multidisciplinary publication, ''Nature'' features Peer review, peer-reviewed research from a variety of academic disciplines, mainly in science and technology. It has core editorial offices across the United States, continental Europe, and Asia under the international scientific publishing company Springer Nature. ''Nature'' was one of the world's most cited scientific journals by the Science Edition of the 2022 ''Journal Citation Reports'' (with an ascribed impact factor of 50.5), making it one of the world's most-read and most prestigious academic journals. , it claimed an online readership of about three million unique readers per month. Founded in the autumn of 1869, ''Nature'' was first circulated by Norman Lockyer and Alexander MacMillan (publisher), Alexander MacMillan as a public forum for scientific innovations. The mid-20th century facilitated an editorial expansion for the j ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nesogale
''Nesogale'' is a genus of tenrecs, which are a family of afrotherian mammals endemic to Madagascar. On the basis of molecular data indicating its two species form a sister group to the rest of ''Microgale'' (21 extant species), they were transferred from ''Microgale'' to ''Nesogale'' in 2016, thus resurrecting a genus first erected by Oldfield Thomas in 1918. These genera, along with ''Oryzorictes'', form the tenrec subfamily Oryzorictinae. ''Nesogale'' contains the following species: * Dobson's shrew tenrec (''N. dobsoni'') - (Oldfield Thomas, Thomas, 1884) * Talazac's shrew tenrec (''N. talazaci'') - (Charles Immanuel Forsyth Major, Forsyth Major, 1896) These species are distinguished from the other shrew tenrecs of ''Microgale'' by being more robust and larger, and by their lack of premolar diastemata. They are distributed over much of the eastern and northern areas of the island. ''Nesogale'' and ''Microgale'' are estimated to have split during the Early Miocene, about 19 mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
