Cottontail rabbits [1] | |
---|---|
Eastern cottontail rabbit (S. floridanus) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Lagomorpha |
Family: | Leporidae |
Genus: | Sylvilagus J. E. Gray, 1867 |
Type species | |
Lepus sylvaticus | |
Species | |
27, see text | |
Cottontail rabbits are in the Sylvilagus genus, which is in the Leporidae family. They are found in the Americas. [1] Most Sylvilagus species have stub tails with white undersides that show when they retreat, giving them their characteristic name. However, this feature is not present in all Sylvilagus, nor is it unique to the genus.
The genus is widely distributed across North America, Central America, and northern and central South America, though most species are confined to some particular regions. Most species live in nests called forms, and all have altricial young. An adult female averages three litters per year, which can occur in any season. Occurrence and litter size depend on several factors, including time of the year, weather, and location. The average litter size is four, but can range from as few as two to as many as eight, most of whom do not go on to survive to adulthood.
Cottontail rabbits show a greater resistance to myxomatosis than European rabbits. [2]
Cottontails are one of several species of Sylvilagus. Their closest relative is Brachylagus , the pygmy rabbit. They are more distantly related to the European and other rabbits, and more distantly still to the hares. The cladogram is based on mitochondrial gene analysis. [3] [4]
The lifespan of a cottontail averages about two years, depending on the location. Almost every living carnivorous creature comparable to or larger in size than these lagomorphs is a potential predator, including such diverse creatures as domestic dogs, cats, humans, snakes, coyotes, mountain lions, foxes, and if the cottontail is showing signs of illness, even squirrels. The cottontail's most frequent predators are various birds of prey. Cottontails can also be parasitized by botfly species including Cuterebra fontinella . [5] Newborn cottontails are particularly vulnerable to these attacks. Cottontails use burrows vacated by other animals, and the burrows are used for long enough periods that predators can learn where the cottontails reside and repeatedly return to prey on the lagomorphs. Though cottontails are prolific animals that can have multiple litters in a year, few of the resulting offspring survive to adulthood. Those that do survive grow very quickly and are full grown adults at three months. [6]
In contrast to rodents (squirrels, etc.), which generally sit on their hind legs and hold food with their front paws while feeding, cottontail rabbits eat while on all fours. Cottontail rabbits typically only use their nose to move and adjust the position of the food that it places directly in front of its front paws on the ground. The cottontail will turn the food with its nose to find the cleanest part of the vegetation (free of sand and inedible parts) to begin its meal. The only time a cottontail uses its front paws while feeding is when vegetation is above its head on a living plant, at which point the cottontail will lift its paw to bend the branch to bring the food within reach. [7]
Cottontails are rarely found foraging for food on windy days, because the wind interferes with their hearing capabilities. Hearing an incoming predator before they get close enough to attack is their primary defense mechanism. [8]
The subgenera were described in the 19th century based on limited morphological data that have been shown to not be of great use, nor to depict phylogenetic relationships. Molecular studies (limited in scope to the mitochondrial 12S gene) have shown that the currently accepted subgeneric structure, [1] while of some heuristic value, is unlikely to withstand additional scrutiny. [9]
Subgenus | Image | Common name | Scientific name | Distribution |
---|---|---|---|---|
Microlagus | Brush rabbit | Sylvilagus bachmani | West coast of North America, from the Columbia River in Oregon to the southern tip of the Baja California Peninsula. Isolated subspecies, San Jose brush rabbit, on San José Island in the Gulf of California. | |
Sylvilagus | Desert cottontail | Sylvilagus audubonii | Western United States from eastern Montana to western Texas, California and in Northern and Central Mexico | |
Mexican cottontail | Sylvilagus cunicularius | Mexico from the state of Sinaloa to the states of Oaxaca and Veracruz | ||
Eastern cottontail | Sylvilagus floridanus | eastern and south-central United States, southern Canada, eastern Mexico, Central America and northernmost South America | ||
Tres Marias cottontail | Sylvilagus graysoni | Tres Marias Islands, Mexico | ||
Mountain cottontail | Sylvilagus nuttallii | Intermountain west of Canada and the United States | ||
Appalachian cottontail or Allegheny cottontail | Sylvilagus obscurus | eastern United States | ||
Robust cottontail | Sylvilagus holzneri | southwestern United States and adjacent Mexico | ||
New England cottontail | Sylvilagus transitionalis | New England, specifically from southern Maine to southern New York | ||
Tapeti | Andean tapeti | Sylvilagus andinus | Venezuela south to Peru | |
Bogota tapeti | Sylvilagus apollinaris | Colombia | ||
Swamp rabbit | Sylvilagus aquaticus | southern United States | ||
Common tapeti | Sylvilagus brasiliensis | Brazil (Venezuela to Argentina when the many unclassified populations are included) | ||
Ecuadorian tapeti | Sylvilagus daulensis | Ecuador | ||
Dice's cottontail | Sylvilagus dicei | Costa Rica and Panama | ||
Fulvous tapeti | Sylvilagus fulvescens | Colombia | ||
Central American tapeti | Sylvilagus gabbi | Mexico to Panama | ||
Northern tapeti | Sylvilagus incitatus | San Miguel Island, Panama | ||
Omilteme cottontail | Sylvilagus insonus | Guerrero, Mexico | ||
Nicefor's tapeti | Sylvilagus nicefori | Colombia | ||
Marsh rabbit | Sylvilagus palustris | southeastern United States | ||
Suriname tapeti | Sylvilagus parentum | western Suriname | ||
Colombian tapeti | Sylvilagus salentus | Colombia | ||
Santa Marta tapeti | Sylvilagus sanctaemartae | Colombia | ||
Western tapeti | Sylvilagus surdaster | Ecuador | ||
Coastal tapeti | Sylvilagus tapetillus | Rio de Janeiro, Brazil | ||
Venezuelan lowland rabbit | Sylvilagus varynaensis | western Venezuela | ||
Rabbits are small mammals in the family Leporidae, which is in the order Lagomorpha. They are familiar throughout the world as a small herbivore, a prey animal, a domesticated form of livestock, and a pet, having a widespread effect on ecologies and cultures. The most widespread rabbit genera are Oryctolagus and Sylvilagus. The former, Oryctolagus, includes the European rabbit, Oryctolagus cuniculus, which is the ancestor of the hundreds of breeds of domestic rabbit and has been introduced on every continent except Antarctica. The latter, Sylvilagus, includes over 13 wild rabbit species, among them the cottontails and tapetis. Wild rabbits not included in Oryctolagus and Sylvilagus include several species of limited distribution, including the pygmy rabbit, volcano rabbit, and Sumatran striped rabbit.
The lagomorphs are the members of the taxonomic order Lagomorpha, of which there are two living families: the Leporidae and the Ochotonidae (pikas). There are 110 recent species of lagomorph, of which only 109 species in twelve genera are extant, including ten genera of rabbits ; one genus of hare and one genus of pika. The name of the order is derived from the Ancient Greek lagos + morphē.
Leporidae is the family of rabbits and hares, containing over 70 species of extant mammals in all. The Latin word Leporidae means "those that resemble lepus" (hare). Together with the pikas, the Leporidae constitute the mammalian order Lagomorpha. Leporidae differ from pikas in that they have short, furry tails and elongated ears and hind legs.
The desert cottontail, also known as Audubon's cottontail, is a New World cottontail rabbit, and a member of the family Leporidae. Unlike the European rabbit, they do not form social burrow systems, but compared with some other leporids, they are extremely tolerant of other individuals in their vicinity.
The swamp rabbit, also called the cane-cutter, is a large cottontail rabbit found in the swamps and wetlands of the southern United States. The species has a strong preference for wet areas, and it will take to the water and swim.
The eastern cottontail is a New World cottontail rabbit, a member of the family Leporidae. It is the most common rabbit species in North America.
The common tapeti, also known as the Brazilian cottontail, forest cottontail, or (formerly) simply tapeti is a species of cottontail rabbit. It is small to medium-sized with a small, dark tail, short hind feet, and short ears. As traditionally defined, its range extends from southern Mexico to northern Argentina, but this includes several distinctive population that have since been split into separate species. Under this narrower definition, the true common tapeti only occurs in the Atlantic Rainforest of coastal northeastern Brazil and it is classified as "Endangered" by the IUCN. The American Society of Mammalogists concurs, but also tentatively classifies several distinct populations that have not yet received proper species names into S. brasiliensis, and thus considers it to range from Venezuela south to Argentina.
Dice's cottontail is a species of cottontail rabbit in the family Leporidae. It is found in Costa Rica and Panama, in páramo and cloud forest habitats.
The mountain cottontail or Nuttall's cottontail is a species of mammal in the family Leporidae. It is found in Canada and the United States.
The marsh rabbit is a small cottontail rabbit found in marshes and swamps of coastal regions of the Eastern and Southern United States. It is a strong swimmer and found only near regions of water. It is similar in appearance to the eastern cottontail but is characterized by smaller ears, legs, and tail.
The Davis Mountains cottontail, robust cottontail or Holzner's cottontail is a species of cottontail rabbit native to high-altitude regions of the southwestern United States and western Mexico.
The Suriname tapeti or Suriname lowland forest cottontail is a South American species of cottontail rabbit described in 2017. It is known from the lowlands of western Suriname, and was described from specimens collected by Dutch scientists in the 1980s. Its size is relatively large for a South American cottontail rabbit. The rabbit is likely already threatened due to environmental degradation in the region, and its discovery could boost conservation efforts in the area. It was discovered by Portland State University Professor Luis Ruedas.
The coastal tapeti, also known as the Rio de Janeiro dwarf cottontail or dwarf tapeti, is a species of cottontail rabbit native to Brazil. Known from only three specimens, captured in the late nineteenth century in the Paraíba Valley, it was for a long time considered to be a subspecies of the common tapeti. Slightly smaller than its close relative, analysis in 2017 confirmed that it is sufficiently distinct in both appearance and genetics to be considered a species in its own right. Due to destruction of its putative habitat in the densely populated Paraíba Valley, it is unclear whether or not the species still survives in the present day.
The Andean tapeti or Andean cottontail is a species of cottontail rabbit native to Colombia, Venezuela, Peru and Ecuador. It was previously considered a subspecies of the common tapeti. It serves an important ecological role as a pervasive herbivore consuming a wide variety of plant species as well as an important food source for several predators. Some characteristics of the species is a head and body length of 326-353 mm, a small tail 6-7% of its head and body length, long hindfeet of 64-81 mm, dusky appearance, a forehead suffused with brown, ashy gray cheeks and neck sides, and a whitish chin and belly. Living at high elevations in the treeless Páramo of the Andes, analysis in 2017 confirmed that it is sufficiently distinct in both appearance and genetics to be considered a species in its own right. Although widespread, it remains poorly known, as few studies have been conducted on its biology and habits as distinct from those of the tapeti
The Central American tapeti or Gabbi's cottontail is a species of cottontail rabbit native to southern Mexico and much of Central America. It was previously considered a subspecies of the common tapeti but analysis in 2017 confirmed that it is sufficiently distinct in both appearance and genetics to be considered a species in its own right. It is closely related to the northern tapeti, which some authors describe as a subspecies of S. gabbi. The name Gabbi's cottontail comes from American paleontologist William More Gabb.
The Santa Marta tapeti is a species of cottontail rabbit native to the lowlands of northern Colombia. It was previously considered a subspecies of the common tapeti but analysis in 2017 confirmed that it is sufficiently distinct in both appearance and genetics to be considered a species in its own right. The name Santa Marta tapeti is derived from the mountain range where the species was first discovered, the Sierra Nevada de Santa Marta.
The Bogota tapeti is a species of cottontail rabbit related to the common tapeti. It is endemic to a region south of the Isthmus of Panama, generally described as "northern Colombia". Previously a subspecies of either the common tapeti or Andean tapeti, it was split and considered a separate species in 2017. Later morphological evidence was examined that supported its separation from S. brasilensis.
The northern tapeti is a species of cottontail rabbit related to the Central American tapeti. Its type locality is an island in the Pearl Islands of Panama. Previously considered a subspecies of the Central American tapeti, and later of the common tapeti from 1950 onwards, it was split into its own separate species in 2019, with researchers noting its "bizarre dental anatomy".