List Of Mammals Of Costa Rica
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List Of Mammals Of Costa Rica
This is a list of the mammal species recorded in Costa Rica. Of the mammal species in Costa Rica, one is critically endangered, four are endangered, six are vulnerable, and three are near threatened. One species is considered extinct. The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature: Some species were assessed using an earlier set of criteria. Species assessed using this system have the following instead of near threatened and least concern categories: Subclass: Theria Infraclass: Metatheria Order: Didelphimorphia (common opossums) ---- Didelphimorphia is the order of common opossums of the Western Hemisphere. Opossums probably diverged from the basic South American marsupials in the late Cretaceous or early Paleocene. They are small to medium-sized marsupials, about the size of a large house cat, with a long snout and prehensile tail. *Family: Didelphidae (American opossums) **Sub ...
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Costa Rica
Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, the Pacific Ocean to the southwest, and Maritime boundary, maritime border with Ecuador to the south of Cocos Island. It has a population of around five million in a land area of . An estimated 333,980 people live in the capital and largest city, San José, Costa Rica, San José, with around two million people in the surrounding metropolitan area. The sovereign state is a Unitary state, unitary Presidential system, presidential Constitution of Costa Rica, constitutional republic. It has a long-standing and stable democracy and a highly educated workforce. The country spends roughly 6.9% of its budget (2016) on education, compared to a global average of 4.4%. Its economy, once heavily dependent on agricultu ...
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Didelphinae
The Didelphinae are a subfamily of opossums consisting of 15 genera and 123 species. Specimens have been collected throughout the Americas, but are predominant in South and Central America. Some sources call this subfamily the "American opossums", while others use that term for the whole family of opossums, Didelphidae. The term may be redundant, though, since all opossums are native to the Americas, while their distant Australian taxonomic relatives, in the suborder Phalangeriformes are referred to as possums in Australia. Classification * Subfamily Didelphinae ** Genus ''Chacodelphys'' *** '' C. formosa'' - Chacoan pygmy opossum ** Genus ''Chironectes'' *** '' C. minimus'' - water opossum ** Genus ''Cryptonanus'' *** '' C. agricolai'' - Agricola's gracile opossum *** '' C. chacoensis'' - Chacoan gracile opossum *** '' C. guahybae'' - Guahiba gracile opossum *** †'' C. ignitus'' - red-bellied gracile opossum *** '' C. unduaviensis'' - Unduavi gracile opossum ** Genus ''Di ...
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Eutheria
Eutheria (; from Greek , 'good, right' and , 'beast'; ) is the clade consisting of all therian mammals that are more closely related to placentals than to marsupials. Eutherians are distinguished from noneutherians by various phenotypic traits of the feet, ankles, jaws and teeth. All extant eutherians lack epipubic bones, which are present in all other living mammals (marsupials and monotremes). This allows for expansion of the abdomen during pregnancy. The oldest-known eutherian species is '' Juramaia sinensis'', dated at from the early Late Jurassic ( Oxfordian) of China. Eutheria was named in 1872 by Theodore Gill; in 1880 Thomas Henry Huxley defined it to encompass a more broadly defined group than Placentalia. Characteristics Distinguishing features are: *an enlarged malleolus ("little hammer") at the bottom of the tibia, the larger of the two shin bones *the joint between the first metatarsal bone and the entocuneiform bone (the innermost of the three cuneiform ...
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Gray Four-eyed Opossum
The gray four-eyed opossum (''Philander opossum'') is an opossum species from Central and South America, ranging from southern Mexico to Peru, Bolivia and southwestern Brazil, at altitudes from sea level to 1600 m, but generally below . Its habitats include primary, secondary and disturbed forest. It is one of many opossum species in the order Didelphimorphia and the family Didelphidae. Description It has a sharply defined white spot above each eye, hence the common name. Its prehensile tail is bicolored, with a pale distal part and a longer proximal darker gray part, and is naked at the end. Its dorsal fur is gray, while its ventral fur, throat, and cheeks are cream-colored. Adults have ears that are black except at the base. Wild specimens weigh , while captive specimens can weigh up to . Body length ranges from with a tail in a similar size range, . Behavior The species is nocturnal, solitary and partly arboreal. It is usually found in moist areas, often near streams, altho ...
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Gray And Black Four-eyed Opossum
The nine species in the genus ''Philander'', commonly known as gray and black four-eyed opossums, are members of the order Didelphimorphia. Mature females have a well-developed marsupium. The tail appears to be hairless except for the proximal (closest to the body) 5 or 6 cm, which has a few long hairs. The tail is slightly longer than the head-and-body length, and it is black for the proximal one half to two thirds of its length. The genus is closely related to ''Didelphis ''Didelphis'' is a genus of New World marsupials. The six species in the genus ''Didelphis'', commonly known as Large American opossums, are members of the ''opossum'' order, Didelphimorphia. The genus ''Didelphis'' is composed of cat-sized om ...'' but the species of ''Philander'' are smaller than those of ''Didelphis''. The genus formerly included ''Metachirus nudicaudatus, but this species lacks a pouch and so is now considered a separate genus. The common name comes from the white spots above ...
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Brown Four-eyed Opossum
The brown four-eyed opossum (''Metachirus nudicaudatus'') is a pouch (marsupial), pouchless marsupial of the family Didelphidae. It is found in different forested habitats of Central America, Central and South America, from Nicaragua to Brazil and northern Argentina, including southeastern Colombia, Paraguay and eastern Peru and Bolivia, at elevations from sea level to 1500 m. It is the only recognized species in the genus ''Metachirus'', but molecular phylogenetics studies suggest that it should probably be split into several species. Population densities are usually low, and it is uncommon in parts of Central America. A density of 25.6/km2 was reported near Manaus, Brazil. Its karyotype has Ploidy#Diploid, 2n = 14 and Karyotype#Fundamental number, FN = 24. It is a nocturnal, solitary, strongly terrestrial and omnivorous animal, feeding on fruits, small vertebrates and invertebrates. The brown four-eyed opossum builds nests made of leaves and twigs in tree branches or under rock ...
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Mexican Mouse Opossum
The Mexican mouse opossum (''Marmosa mexicana'') is a species of North American opossum in the family Didelphidae. Description ''Marmosa mexicana'' is a small to moderate-sized reddish-brown marsupial, varying from bright to dull coloration. Hairs of the back, sides and outer surfaces of legs are lead-colored at the base and tipped with reddish brown. The forehead and nose are paler in color. The eye-rings are black and vary in intensity based on the region of the individual. The cheeks, throat, belly and inner surfaces of legs are yellowish with a median white pectoral area. Body hair continues onto the tail for approximately 10 mm. Its nose is pink, ears are grayish brown, and its tail is a dusky brown. It possesses a prehensile tail of equal length to its body. While appearing naked, the tail in fact has a fine layer of hair.Alonso-Mejia, Alfonso and Medellin, Rodrigo A (1992). Marmosa Mexicana. Mammalian Species, 421 1-4. Reproduction Like all marsupials, gestation is p ...
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Alston's Mouse Opossum
Alston's mouse opossum (''Marmosa alstoni''), also known as Alston's opossum, is a medium-sized pouchless marsupial of the family Didelphidae. It is arboreal and nocturnal, inhabiting forests from Belize to northern Colombia. The main components of its diet are insects and fruits, but it may also eat small rodents, lizards, and bird eggs. It was formerly assigned to the genus ''Micoureus'', which was made a subgenus of ''Marmosa The 27 species in the genus ''Marmosa'' are relatively small Neotropical members of the family Didelphidae. This genus is one of three that are known as mouse opossums. The others are '' Thylamys'' (the "fat-tailed mouse opossums") and '' Tlacua ...'' in 2009. References External linksImage at ADW Opossums Marsupials of Central America Mammals of Colombia Mammals described in 1900 {{marsupial-stub ...
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Marmosa
The 27 species in the genus ''Marmosa'' are relatively small Neotropical members of the family Didelphidae. This genus is one of three that are known as mouse opossums. The others are '' Thylamys'' (the "fat-tailed mouse opossums") and '' Tlacuatzin'', the grayish mouse opossum. Members of the genus ''Marmosops'' used to be called "slender mouse opossums", but are now just called "slender opossums". The thirteen members of the ''Marmosa'' subgenus ''Micoureus'', known as woolly mouse opossums, were formerly considered to be a separate genus, but were moved into ''Marmosa'' in 2009. Based on a comparison of sequences of one mitochondrial and three nuclear genes, three new subgenera, ''Eomarmosa'', ''Exulomarmosa'' and ''Stegomarmosa'', were recognized by Voss ''et al.'' in 2014. ''Eomarmosa'' and ''Exulomarmosa'', as well as ''Marmosa'' and ''Micoureus'', are thought to be sister taxa, while ''Stegomarmosa'' is viewed as sister to ''Marmosa'' plus ''Micoureus''. ''Exulomarmosa'' is ...
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Virginia Opossum
The Virginia opossum (''Didelphis virginiana''), also known as the North American opossum, is the only opossum living north of Mexico, its range extending south into Central America. It is the northernmost marsupial in the world. In the United States and Canada, it is typically called a possum, 'possum or opossum. It is a solitary nocturnal animal about the size of a domestic cat, and a successful opportunist. Opossums are familiar to many North Americans as they frequently inhabit settled areas near food sources like trash cans, pet food, compost piles, gardens or housemice. Their slow and nocturnal nature, and their attraction to roadside carrion, makes many roadkill. Name The Virginia opossum is the original animal named "opossum", a word which comes from Algonquian ''wapathemwa'', meaning "white animal". Colloquially, the Virginia opossum is frequently just called a "possum". The name ''opossum'' is applied more generally to any of the other marsupials of the families Dide ...
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Common Opossum
The common opossum (''Didelphis marsupialis''), also called the southern or black-eared opossum or gambá, and sometimes called a possum, is a marsupial species living from the northeast of Mexico to Bolivia (reaching the coast of the South Pacific Ocean to the central coast of Peru), including Trinidad and Tobago in the Caribbean, where it is called manicou. It prefers the woods, but can also live in fields and cities. Habitat and shelter This opossum is found in tropical and subtropical forest, both primary and secondary, at altitudes up to 2200 m. They use a wide range of nest sites. Most commonly they will create one in the hollow of a tree; however, they will also dig a burrow or nest in any dark location if nothing else is suitable (which often gets them in trouble with humans). Opossums enjoy denning underground, but do not spend as much time underground when it is dry season. Common predators of the opossum are humans, house pets (ex: dogs and cats), and birds. When they ...
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