Tayra

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Tayra
Tayra - Male, Brazil (cropped).jpg
A male tayra, Brazil
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Mustelidae
Subfamily: Guloninae
Genus: Eira
Hamilton Smith, 1842
Species:
E. barbara
Binomial name
Eira barbara
Tayra area.png
Tayra range
Synonyms

Mustela barbaraLinnaeus, 1758

The tayra (Eira barbara) is an omnivorous animal from the weasel family, native to the Americas. It is the only species in the genus Eira.

Tayras are also known as the tolomuco or perico ligero in Central America, motete in Honduras, irara in Brazil, san hol or viejo de monte in the Yucatan Peninsula, and high-woods dog (or historically chien bois) in Trinidad. [2] The genus name Eira is derived from the indigenous name of the animal in Bolivia and Peru, while barbara means "strange" or "foreign". [3]

Description

Tayras are long, agile mustelids, similar in appearance to a large fisher or marten, but slightly more reminiscent of a sleeker, smaller wolverine. They range from 56 to 71 cm (22 to 28 in) in length, not including their 37- to 46-cm-long (15 to 18 in) bushy tail, and weigh 2.7 to 7.0 kg (6.0 to 15.4 lb). Males are larger and slightly more muscular than females. They have short, dark brown to black fur, which is relatively uniform in length and color across the body, limbs, and tail—except for a yellowish or orange "heart"-shaped spot on the chest. Each tayra's chest patch is unique in color, shape and size, and thus may be used by biologists, rescuers and other specialists to identify individuals. [4] The fur on the head and neck is lighter, typically tan or greyish in colour. Albino, white, or beige-yellow individuals are also known, with genetic color morphs being not nearly as rare in tayras as among other mustelids. [3]

The feet have toes of unequal length with tips that form a strongly curved line when held together. The claws are short and curved, but strong, being adapted for climbing and running rather than digging. The pads of the feet are hairless, but are surrounded by stiff sensory hairs. The head has small, rounded ears, long sensory whiskers, and black eyes with a blue-green shine. Like other musteloids, tayras possess anal scent glands, albeit not nearly as large, nor as pungent in odor, as in other species. Additionally, tayras typically only employ scent-marking for territorial demarcation and identifying other animals in the vicinity, and not as a self-defense tactic, such as with skunks. [3]

Range and habitat

Distribution of tayra subspecies. Tayra range.jpg
Distribution of tayra subspecies.

Tayras are found across most of South America, with the exceptions of Chile, Uruguay, Argentina (other than the far northern regions) and parts of the Brazilian east coast. They are found across the whole of Central America, where their range begins in México—as far north as Tamaulipas and Veracruz, on the east coast, and south Sinaloa and Nayarit on the west coast—and continues south to Panamá. Tayras are also found on the island of Trinidad. [1] They are generally found in only tropical and subtropical forests; still, they may traverse grasslands or other habitats at nighttime, as they move between forest patches, [5] and they also are seen in cultivated areas, tree plantations and farmlands. [1]

Subspecies

Currently, seven regional subspecies are recognised: [3]

Behaviour and diet

Tayras are diurnal animals, although occasionally active during the evening or at night. [5] The social behaviour of tayras is not well understood. Assumed solitary, they have been seen in larger groups, presumably of mother and her larger offspring. [6] They are opportunistic omnivores, hunting rodents and other small mammals, as well as birds, lizards, other reptiles, and invertebrates, and climbing trees to get fruit and honey. [3] [7] [8] They locate prey primarily by scent, having relatively poor eyesight, and actively chase it once located, rather than stalking or using ambush tactics. [5]

They are expert climbers, using their long tails for balance. On the ground or on large horizontal tree limbs, they use a bounding gallop when moving at high speeds. [9] They can also leap from treetop to treetop when pursued.[ citation needed ] They generally avoid water, but are capable of swimming across rivers when necessary. [3]

They live in hollow trees, or burrows in the ground. Individual animals maintain relatively large home ranges, with areas up to 24 km2 (9.3 sq mi) having been recorded. They may travel at least 6 km (3.7 mi) in a single night. [3]

An interesting instance of caching has been observed among tayras: a tayra will pick unripe green plantains, which are inedible, and leave them to ripen in a cache, coming back a few days later to consume the softened pulp. [10]

The tayra was found to be a host of an intestinal acanthocephalan parasitic worm, Pachysentis gethi . [11]

Reproduction

Tayras breed year-round, with the females entering estrus several times each year for 3 to 20 days at a time. [12] Unlike some other mustelids, tayras do not exhibit embryonic diapause, and gestation lasts from 63 to 67 days. The female gives birth to one to three young, which she cares for alone. [3] [13]

The young are altricial, being born blind and with closed ears, but are already covered in a full coat of black fur; they weigh about 100 g (3.5 oz) at birth. Their eyes open at 35 to 47 days, and they leave the den shortly thereafter. They begin to take solid food around 70 days of age, and are fully weaned by 100 days. Hunting behaviour begins as early as three months, and the mother initially brings her young wounded or slow prey to practise on as they improve their killing technique. The young are fully grown around 6 months old, and leave their mother to establish their own territory by 10 months. [3]

Conservation

Wild tayra populations are slowly shrinking, especially in Mexico, due to habitat destruction for agricultural purposes. The species is listed as being of least concern. [1]

Related Research Articles

<span class="mw-page-title-main">Mustelidae</span> Family of mammals

The Mustelidae are a diverse family of carnivorous mammals, including weasels, stoats, badgers, otters, martens, grisons, and wolverines. Otherwise known as mustelids, they form the largest family in the suborder Caniformia of the order Carnivora with about 66 to 70 species in nine subfamilies.

<span class="mw-page-title-main">Ocelot</span> Small wild cat

The ocelot is a medium-sized spotted wild cat that reaches 40–50 cm (15.7–19.7 in) at the shoulders and weighs between 7 and 15.5 kg on average. It is native to the southwestern United States, Mexico, Central and South America, and the Caribbean islands of Trinidad and Margarita. Carl Linnaeus scientifically described it in 1758. Two subspecies are recognized.

<span class="mw-page-title-main">Kinkajou</span> South American honeyeater (Potos flavus)

The kinkajou is a tropical rainforest mammal of the family Procyonidae related to olingos, coatis, raccoons, and the ringtail and cacomistle. It is the only member of the genus Potos and is also known as the "honey bear". Kinkajous are arboreal, they are not closely related to any other tree-dwelling mammal group.

<span class="mw-page-title-main">Jaguarundi</span> Species of felid

The jaguarundi is a wild cat native to the Americas. Its range extends from central Argentina in the south to northern Mexico, through Central and South America east of the Andes. The jaguarundi is a medium-sized cat of slender build. Its coloration is uniform with two color morphs, gray and red. It has an elongated body, with relatively short legs, a small, narrow head, small, round ears, a short snout, and a long tail, resembling mustelids in these respects. It is about twice as large as a domestic cat, reaching nearly 360 mm (14 in) at the shoulder, and weighs 3.5–7 kg (7.7–15.4 lb).

<span class="mw-page-title-main">Bush dog</span> Species of carnivore

The bush dog is a canine found in Central and South America. In spite of its extensive range, it is very rare in most areas except in Suriname, Guyana and Peru; it was first described by Peter Wilhelm Lund from fossils in Brazilian caves and was believed to be extinct.

<span class="mw-page-title-main">Hoarding (animal behavior)</span> Behavior; storage of food in hidden locations

Hoarding or caching in animal behavior is the storage of food in locations hidden from the sight of both conspecifics and members of other species. Most commonly, the function of hoarding or caching is to store food in times of surplus for times when food is less plentiful. However, there is evidence that a certain amount of caching or hoarding is actually undertaken with the aim of ripening the food so stored, and this practice is thus referred to as ‘ripening caching’. The term hoarding is most typically used for rodents, whereas caching is more commonly used in reference to birds, but the behaviors in both animal groups are quite similar.

<span class="mw-page-title-main">White-winged vampire bat</span> Species of mammals belonging to the New World leaf-nosed bat family

The white-winged vampire bat, a species of vampire bat, is the only member of the genus Diaemus. They are found from Mexico to northern Argentina and are present on the islands of Trinidad and Margarita.

<span class="mw-page-title-main">White-fronted capuchin</span> Common name for several monkey species

White-fronted capuchin can refer to any of a number of species of gracile capuchin monkey which used to be considered as the single species Cebus albifrons. White-fronted capuchins are found in seven different countries in South America: Bolivia, Brazil, Colombia, Venezuela, Ecuador, Peru, and Trinidad and Tobago.

<span class="mw-page-title-main">White-headed marmoset</span> Species of New World monkey

The white-headed marmoset, also known as the tufted-ear marmoset, Geoffroy's marmoset, or Geoffrey's marmoset, is a marmoset endemic to forests in eastern Brazil, where it is native to Bahia, Espírito Santo, and Minas Gerais, and introduced to Santa Catarina. It is known as the sagüi or sauim in Brazil. Its diet consists of fruits, insects, and the gum of trees. It is a host of Pachysentis lenti an acanthocephalan intestinal parasite.

<span class="mw-page-title-main">Southern tamandua</span> Species of anteater

The southern tamandua, also called the collared anteater or lesser anteater, is a species of anteater from South America and the island of Trinidad in the Caribbean. It is a solitary animal found in many habitats, from mature to highly disturbed secondary forests and arid savannas. It feeds on ants, termites, and bees. Its very strong foreclaws can be used to break insect nests or to defend itself.

<span class="mw-page-title-main">Hoffmann's two-toed sloth</span> Species of mammals related to anteaters and armadillos

The Hoffmann's two-toed sloth, also known as the northern two-toed sloth, is a species of sloth from Central and South America. It is a solitary, largely nocturnal and arboreal animal, found in mature and secondary rainforests and deciduous forests. The common name commemorates the German naturalist Karl Hoffmann.

<span class="mw-page-title-main">Greater long-nosed armadillo</span> Species of mammal

The greater long-nosed armadillo is a South American species of armadillo found in Colombia, Venezuela, Ecuador, Guyana, Suriname, French Guiana, Peru, Bolivia and Brazil. It is a solitary, nocturnal, terrestrial animal that feeds on arthropods and other invertebrates, usually living in the vicinity of streams and swamps.

<span class="mw-page-title-main">Greater grison</span> Species of carnivore

The greater grison is a species of mustelid native to Southern Mexico, Central America, and South America.

<span class="mw-page-title-main">Lesser grison</span> Species of carnivore

The lesser grison is a species of mustelid from South America.

<span class="mw-page-title-main">Bare-tailed woolly opossum</span> Species of marsupial

The bare-tailed woolly opossum is an opossum from South America. It was first described by Swedish zoologist Carl Linnaeus in 1758. The bare-tailed woolly opossum is characterized by a gray head, brown to gray coat, orange to gray underside and a partially naked tail. It is nocturnal and solitary; there is hardly any social interaction except between mother and juveniles and in mating pairs. The opossum constructs nests in tree cavities, and its litter size ranges from one to seven. Gestation lasts 25 days, and the juveniles exit the pouch after three months; weaning occurs a month later. The bare-tailed woolly opossum inhabits subtropical forests, rainforests, secondary forests, and plantations; its range extends from northern Venezuela to northeastern and southcentral Brazil. The IUCN classifies this opossum as least concern.

<span class="mw-page-title-main">Common opossum</span> Species of marsupial

The common opossum, 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, including Trinidad and Tobago and the Windwards in the Caribbean, where it is called manicou. It prefers the woods, but can also live in fields and cities.

<span class="mw-page-title-main">Geoffroy's tailless bat</span> Species of bat

Geoffroy's tailless bat is a species of phyllostomid bat from the American tropics.

<span class="mw-page-title-main">Oligacanthorhynchidae</span> Order of thorny-headed worms

Oligacanthorhynchida is an order containing a single parasitic worm family, Oligacanthorhynchidae, that attach themselves to the intestinal wall of terrestrial vertebrates.

Prosthenorchis is a genus of parasitic worms belonging to the family Oligacanthorhynchidae. Prosthenorchis have a trunk up to 50 mm long, a proboscis that is not ornate with three barbed hooks in each of 12 rows. They have complex hook roots with large manubria, and a small discoid posterior hook base. There are up to 23 festoons. Gonopore is subterminal. The primary host are primates in South America and Felidae in Africa with cockroaches and beetles as intermediate hosts.

<i>Pachysentis</i> Genus of worms

Pachysentis is a genus in Acanthocephala that parasitize primates and carnivorans. They are distributed across Africa, the Middle East, and the Americas. Pachysentis species attach themselves to the inner lining of the gastrointestinal tract of their hosts using their hook-covered proboscis. Their life cycle includes an egg stage found in host feces, a cystacanth (larval) stage in an intermediate host such as the Egyptian cobra, and an adult stage where cystacanths mature in the intestines of the host. This genus appears identical to the closely related Oncicola apart from a greater number of hooks on the proboscis. There are eleven species assigned to this genus, although P. septemserialis is of uncertain taxonomic status. The female worms range from 12 millimetres (0.47 in) long and 1.6 millimetres (0.063 in) wide in P. lauroi to 50 millimetres (2.0 in) long and 4 millimetres (0.16 in) wide in P. dollfusi. Virtually all of the length is the trunk, with a short proboscis. There is pronounced sexual dimorphism in this species as females are around twice the size of the males.

References

  1. 1 2 3 4 Cuarón, A.D.; Reid, F.; Helgen, K.; González-Maya, J.F. (2016). "Eira barbara". IUCN Red List of Threatened Species . 2016: e.T41644A45212151. doi: 10.2305/IUCN.UK.2016-1.RLTS.T41644A45212151.en . Retrieved 19 November 2021.
  2. "Sistema de Publicaciones del INE". Archived from the original on 2011-07-22. Retrieved 2010-10-29.
  3. 1 2 3 4 5 6 7 8 9 Presley, S.J. (2000). "Eira barbara" (PDF). Mammalian Species. 636: 1–6. doi:10.1644/1545-1410(2000)636<0001:eb>2.0.co;2. S2CID   198968925.
  4. Villafañe-Trujillo, Álvaro José; López-González, Carlos Alberto; Kolowski, Joseph M. (2018-01-24). "Throat patch variation in tayra (Eira barbara) and the potential for individual identification in the field". Diversity. 10 (1): 7. doi: 10.3390/d10010007 .
  5. 1 2 3 Defler, T.R. (1980). "Notes on interactions between tayra (Eira barbara) and the white-fronted capuchin (Cebus albifrons)". Journal of Mammalogy. 61 (1): 156. doi:10.2307/1379979. JSTOR   1379979.
  6. Hunter, Luke (2018). Field Guide to Carnivores of the World, 2nd edition. Bloomsbury Wildlife.
  7. Galef, B.G.; et al. (1976). "Predation by the tayra (Eira barbara)". Journal of Mammalogy. 57 (4): 760–761. doi:10.2307/1379450. JSTOR   1379450.
  8. "Eira barbara (Tayra)". Animal Diversity Web .
  9. Kavanau, J.L. (1971). "Locomotion and activity phasing of some medium-sized mammals". Journal of Mammalogy. 52 (2): 396–403. doi:10.2307/1378681. JSTOR   1378681.
  10. Soley, F.G. & Alvarado-Díaz, I. (8 July 2011). "Prospective thinking in a mustelid? Eira barbara (Carnivora) cache unripe fruits to consume them once ripened". Naturwissenschaften. 98 (8): 693–698. Bibcode:2011NW.....98..693S. doi:10.1007/s00114-011-0821-0. PMID   21739130. S2CID   6205887.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  11. Machado-Filho, D.A. (1950). "Revisão do gênero Prosthenorchis Travassos, 1915 (Acanthocephala)" [Revision to the genus Prosthenorchis Travassos, 1915 (Acanthocephala)]. Memórias do Instituto Oswaldo Cruz (in Portuguese). 48: 495–545. doi: 10.1590/S0074-02761950000100020 . PMID   24539413. Archived from the original on 18 June 2022.
  12. Poglayen-Neuwall, I. "Copulatory behavior, gestation and parturition of the tayra." Bull. Br. Mus. (Nat. Hist.) Zool. 7 (1974): 1-140.
  13. Vaughan, R. (1974). "Breeding the tayra (Eira barbara) at Antelope Zoo, Lincoln". International Zoo Yearbook. 14: 120–122. doi:10.1111/j.1748-1090.1974.tb00791.x.

Further reading