Lesser capybara | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Rodentia |
Family: | Caviidae |
Genus: | Hydrochoerus |
Species: | H. isthmius |
Binomial name | |
Hydrochoerus isthmius Goldman, 1912 | |
Lesser capybara range |
The lesser capybara (Hydrochoerus isthmius) [2] is a large semi-aquatic rodent found in South America that has vast similarities, yet subtle differences with the common Capybara ( Hydrochoerus hydrochaeris ), the largest species of rodent in the world. [3]
The lesser capybara mainly inhabits areas close to water such as marshes, ponds, and lagoon habitats as these places offer water, which is essential for these capybaras to fulfil their niches' of maintain body temperature homeostasis, provide suitable food, hide from predators, and mate. They were first observed in Pacific river valleys in Panama as early as 1912 as a subspecies of the common capybara. However, after thorough studies on the anatomy and genealogy of them, the lesser capybara was classified as its own species some time in the 1980s. [4] Currently, this species has expanded its range to parts of Eastern Panama and Western Columbia and Venezuela, just west of the Andes Mountains. The lesser capybara constitutes the northernmost population of any capybara species. [3]
Lesser capybaras are herbivores that mainly graze on grasses and other aquatic plants. However, during dry seasons when their main source of food is depleted, the lesser capybaras will tend to feed on reeds, grains, melons, and squash. On average, an adult will eat 6-8 lbs of this food per day. [5] Although not a main part of their diet, lesser capybaras will also eventually ingest their own feces to gain bacteria that benefits them in breaking down thick fibers eaten. [5]
Just like other capybaras, the lesser subspecies is characterized by short, brown-hair, with blunt snouts, four short legs (front legs are smaller than hind), partially webbed feet, small eyes and ears situated high on their head, and a very tiny tail. [6] Compared to other Capybara's, the lesser subspecies are generally smaller in size, with adults growing up to 3 ft in length, weighing up to 62 lbs, and having a darker brown coat. [4]
As animals that are considered prey for many animals, the species is very wary of predators and likes to travel in groups of about 20 cavies. [7] As a result, the capybaras have adapted to be excellent swimmers and dive regularly in water to avoid predators such as jaguars and anacondas. [6] Having eyes and ears placed high on their heads, the capybaras can see these predators while in the waters. [8] Furthermore, being immersed in water for long periods of time helps the capybaras regulate their body temperature by helping them cool off. [8]
The lesser capybara breeds year-round, only in water. [8] Lesser capybara females when in estrus, will whistle through their nose to attract males. Females having a gestation period of roughly 108 days, and giving birth to litters of about 3-4 baby pups. [4]
The capybara or greater capybara is the largest living rodent, native to South America. It is a member of the genus Hydrochoerus. The only other extant member is the lesser capybara. Its close relatives include guinea pigs and rock cavies, and it is more distantly related to the agouti, the chinchilla, and the nutria. The capybara inhabits savannas and dense forests, and lives near bodies of water. It is a highly social species and can be found in groups as large as 100 individuals, but usually live in groups of 10–20 individuals. The capybara is hunted for its meat and hide and also for grease from its thick fatty skin.
Jerboas are hopping desert rodents found throughout North Africa and Asia, and are members of the family Dipodidae. They tend to live in hot deserts.
The common kingfisher, also known as the Eurasian kingfisher and river kingfisher, is a small kingfisher with seven subspecies recognized within its wide distribution across Eurasia and North Africa. It is resident in much of its range, but migrates from areas where rivers freeze in winter.
Garter snake is the common name for small to medium-sized snakes belonging to the genus Thamnophis in the family Colubridae. They are native to North and Central America, ranging from central Canada in the north to Costa Rica in the south.
The cacomistle, also spelled cacomixtle, is a primarily nocturnal, arboreal, omnivorous member of the carnivoran family Procyonidae. Depending on the location, its preferred habitats are humid and tropical evergreen jungle and montane cloud forests; seasonally, it may venture into drier, deciduous forests.
The greater kudu is a large woodland antelope, found throughout eastern and southern Africa. Despite occupying such widespread territory, they are sparsely populated in most areas due to declining habitat, deforestation, and poaching. The greater kudu is one of two species commonly known as kudu, the other being the lesser kudu, T. imberbis.
The common frog or grass frog, also known as the European common frog, European common brown frog, European grass frog, European Holarctic true frog, European pond frog or European brown frog, is a semi-aquatic amphibian of the family Ranidae, found throughout much of Europe as far north as Scandinavia and as far east as the Urals, except for most of the Iberian Peninsula, southern Italy, and the southern Balkans. The farthest west it can be found is Ireland. It is also found in Asia, and eastward to Japan. The nominative, and most common, subspecies Rana temporaria temporaria is a largely terrestrial frog native to Europe. It is distributed throughout northern Europe and can be found in Ireland, the Isle of Lewis and as far east as Japan.
Sprat is the common name applied to a group of forage fish belonging to the genus Sprattus in the family Clupeidae. The term also is applied to a number of other small sprat-like forage fish. Like most forage fishes, sprats are highly active, small, oily fish. They travel in large schools with other fish and swim continuously throughout the day.
The North American beaver is one of two extant beaver species, along with the Eurasian beaver. It is native to North America and has been introduced in South America (Patagonia) and Europe. The North American beaver is one of the official national wildlife of Canada symbols and is the official state mammal of Oregon and New York. North American beavers are widespread across the continental United States, Canada, southern Alaska, and some parts of northern Mexico.
The genus Hydrochoerus contains two living and three extinct species of rodents from South America, the Caribbean island of Grenada, California and Panama. Capybaras are the largest living rodents in the world. The genus name is derived from the Greek ὕδωρ 'water' plus χοίρος 'pig'.
The southern bog lemming is a small North American lemming. Its range overlaps with the other species in genus Synaptomys, the northern bog lemming, in southeastern Canada, but extends farther south.
The lesser Egyptian gerbil is a small species of rodent in the family Muridae. It is native to North Africa and the Sinai Peninsula, where it lives in sandy habitats. It is a common species, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
The tawny frogmouth is a species of frogmouth native to the Australian mainland and Tasmania and found throughout. It is a big-headed, stocky bird often mistaken for an owl due to its nocturnal habits and similar colouring.
Aquatic mammals and semiaquatic mammals are a diverse group of mammals that dwell partly or entirely in bodies of water. They include the various marine mammals who dwell in oceans, as well as various freshwater species, such as the European otter. They are not a taxon and are not unified by any distinct biological grouping, but rather their dependence on and integral relation to aquatic ecosystems. The level of dependence on aquatic life varies greatly among species. Among freshwater taxa, the Amazonian manatee and river dolphins are completely aquatic and fully dependent on aquatic ecosystems. Semiaquatic freshwater taxa include the Baikal seal, which feeds underwater but rests, molts, and breeds on land; and the capybara and hippopotamus which are able to venture in and out of water in search of food.
The lesser jerboa is a small rodent of Africa and the Middle East. Its diet consists mainly of seeds and grasses.
The banded killifish is a North American species of temperate freshwater killifish belonging to the genus Fundulus of the family Fundulidae. Its natural geographic range extends from Newfoundland to South Carolina, and west to Minnesota, including the Great Lakes drainages. This species is the only freshwater killifish found in the northeastern United States. While it is primarily a freshwater species, it can occasionally be found in brackish water.
The cactus mouse or cactus deermouse is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice". They are native to desert areas of western North America.
Merriam's ground squirrel is a species of rodent in the family Sciuridae. It occurs in the western United States in Idaho, Nevada, and Oregon.
Grazing is a method of feeding in which a herbivore feeds on low-growing plants such as grasses or other multicellular organisms, such as algae. Many species of animals can be said to be grazers, from large animals such as hippopotamuses to small aquatic snails. Grazing behaviour is a type of feeding strategy within the ecology of a species. Specific grazing strategies include graminivory ; coprophagy ; pseudoruminant ; and grazing on plants other than grass, such as on marine algae.
Hydrochoerus hesperotiganites is an extinct species of capybara that lived in San Diego County, California, during the Rancholabrean stage of the Pleistocene. It is currently the only known capybara of the genus Hydrochoerus found in North America. It was closely related to the modern Greater and Lesser Capybara.