| Mexican pygmy mouse | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Neotominae |
| Genus: | Baiomys |
| Species: | B. musculus |
| Binomial name | |
| Baiomys musculus (Merriam, 1892) | |
| Synonyms | |
Sitomys musculusMerriam, 1892 | |
The Mexican pygmy mouse (Baiomys musculus) is a species of rodent native to Mexico. [2]
In 2021 it was determined that seven of the eight recognized subspecies formerly considered part of Baiomys musculus should instead belong to Baiomys brunneus. The Trans-Mexican Volcanic Belt and the Balsas River, form a barrier between Baiomys musculus to the west and Baiomys brunneus to the east. [2] This species, as well as B. musculus, are likely more basal within Baiomys than the northern pygmy mouse, since they moreso resemble fossil species. [3] This species has no accepted subspecies. [2]
The hair of this species tends to be olive-brown to dark brown on top and lighter whitish to grayish on the bottom. The body length of this species is 75.6 mm (2.98 in), with a 47.5 mm (1.87 in) tail. [4] It is larger on average than B. brunneus. [3] Uncharacteristically of other members in the family Cricetidae they have 14 cheek teeth instead of 12. [5]
Similar to Baiomys brunneus, this species likely prefers to live in grasslands. They have been found in owl pellets, and are likely preyed upon by birds of prey and small mammals. They are active in the afternoon and early evening. They feed on nuts, leaves, seeds, and fruits. [3]
This species is endemic to Mexico. It lives in the states of Michoacán, Colima, southern and central Jalisco, and southern Nayarit. [2]
The blue whale is a marine mammal and a baleen whale. Reaching a maximum confirmed length of 29.9 m (98 ft) and weighing up to 199 t, it is the largest animal known ever to have existed. The blue whale's long and slender body can be of various shades of greyish-blue on its upper surface and somewhat lighter underneath. Four subspecies are recognized: B. m. musculus in the North Atlantic and North Pacific, B. m. intermedia in the Southern Ocean, B. m. brevicauda in the Indian Ocean and South Pacific Ocean, and B. m. indica in the Northern Indian Ocean. There is a population in the waters off Chile that may constitute a fifth subspecies.
The common planigale, also known as the pygmy planigale or coastal planigale, is one of the small carnivorous marsupials known as "marsupial mice" found in Australia. There they fill a similar niche to the insectivores of other parts of the world.
The great horned owl, also known as the tiger owl or the hoot owl, is a large owl native to the Americas. It is an extremely adaptable bird with a vast range and is the most widely distributed true owl in the Americas. Its primary diet is rabbits and hares, rats and mice, and voles, although it freely hunts any animal it can overtake, including rodents and other small mammals, larger mid-sized mammals, birds, reptiles, amphibians, and invertebrates.
The Neotominae are a subfamily of the family Cricetidae. They consist of four tribes, 16 genera, and many species of New World rats and mice, predominantly found in North America. Among them are the well-known deer mice, white-footed mice, packrats, and grasshopper mice.
The spined pygmy shark is a species of squaliform shark in the family Dalatiidae found widely in all oceans. Growing no larger than roughly 28 cm (11 in), it is one of the smallest sharks alive, with this record beaten by the dwarf lanternshark. This shark has a slender, cigar-shaped body with a sizable conical snout, a long but low second dorsal fin, and an almost symmetrical caudal fin. Its sister species S. aliae and it are the only sharks with a spine on the first dorsal fin and not the second. Spined pygmy sharks are dark brown to black, with numerous bioluminescent organs called photophores on their ventral surface. The shark is believed to use these photophores to match ambient light conditions, which break up its silhouette and help the shark to avoid being seen by predators below.
Baiomys is a genus for the New World pygmy mice. Together with Scotinomys, it forms the tribe Baiomyini. It contains the smallest rodents in North America. It currently contains three extant species:
The California vole is a type of vole which lives throughout much of California and part of southwestern Oregon. It is also known as the "California meadow mouse", a misnomer as this species is a vole, not a mouse. It averages 172 mm (6.8 in) in length although this length varies greatly between subspecies.
The pygmy blue whale is a subspecies of the blue whale found in the Indian Ocean and the Southern Pacific Ocean.
The southern pygmy mouse is a species of rodent in the family Cricetidae. It is found in El Salvador, Guatemala, Honduras, Mexico, and Nicaragua.
The northern pygmy mouse is a species of rodent in the family Cricetidae. It is known as ratón-pigmeo norteño in the Spanish-speaking areas of its range. It is found in Mexico and the United States. It is the smallest rodent in North America.
The steppe mouse or mound-building mouse is a species of rodent in the family Muridae. It is found in grassland and other open areas in Austria, Bosnia and Herzegovina, Albania, Bulgaria, Croatia, Czech Republic, Hungary, North Macedonia, Romania, Serbia, Montenegro, Slovakia, Slovenia, and Ukraine.
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.
The cotton mouse is a species of rodent in the family Cricetidae found in the woodlands of the US South.
The Angel Island mouse, or La Guarda deermouse, is a species of rodent in the family Cricetidae.
Hooper's mouse is a species of rodent in the family Cricetidae. It is the only member of the Peromyscus hooperi species group, and is found only in Mexico. The species is named for Emmett Hooper, a researcher into the taxonomy of the genus Peromyscus.
The northern broad-footed mole is a species of mammal in the family Talpidae. It is endemic to the United States, where it is found in northern California, Nevada and Oregon at elevations up to 9,800 feet (3,000 m) above sea level.
Baiomyini is a tribe of rodents in the subfamily Neotominae occurring from the southern United States to Panama. It includes the genera Baiomys and Scotinomys, with a total of five living species.
The little brown bat or little brown myotis is an endangered species of mouse-eared microbat found in North America. It has a small body size and glossy brown fur. It is similar in appearance to several other mouse-eared bats, including the Indiana bat, northern long-eared bat, and Arizona myotis, to which it is closely related. Despite its name, the little brown bat is not closely related to the big brown bat, which belongs to a different genus.
The elegant myotis is a species of vesper bat found in Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, and Nicaragua.
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