Densities of the hispid cotton rat
(Sigmodon hispidus) were significantly greater in the Muhlenbergia habitat than in King Ranch bluestem.
We examined the microhabitat associations of the hispid cotton rat
(Sigmodon hispidus) and white-footed mouse (Peromyscus leucopus).
maniculatus), the western harvest mouse (Reithrodontomys megalotis), the hispid cotton rat
(Sigmodon hispidus), the fulvous pygmy rice rat (Oligoryzomys fulvescens), and 122 other species in the Neotominae or Sigmodontinae (16).
For example, the hispid cotton rat
(Sigmodon hispidus) in Florida is the principal host of Tamiami virus (6,7), and the ubiquitous house mouse (Mus musculus) is the principal host of LCMV (9).
The hispid cotton rat
is widespread in Texas (Davis & Schmidly 1994).
1995) determined that availability of protein, Ca, and K was low in plants that were consumed, and that these nutrients were critical dietary components that could limit reproduction in a common herbivorous rodent, the hispid cotton rat
For example, the southern plains woodrat (Neotoma micropus) in southern Texas is the principal host of Catarina virus (4), and the hispid cotton rat
(Sigmodon hispidus) in southern Florida is the principal host of Tamiami virus (6).
The hispid cotton rat
is, perhaps, the most widely distributed species in Oklahoma and one of the most common mammals in collections.
In descending order of abundance, the North American deermouse was the most common species with 211 individuals and 480 captures, followed by the white-footed deermouse (62 individuals and 122 captures), prairie vole (Microtus ochrogaster; 19 and 28), western harvest mouse (Reithrodontomys megalotis; 15 and 23), hispid cotton rat
(Sigmodon hispidus; 6 and 8), thirteen-lined ground squirrel (Spermophilus tri decemlineatus; 3 and 5), eastern woodrat (Neotoma floridana; 2 and 4), and hispid pocket mouse (Chaetodipus hispidus, 1 and 2).
For example, principal hosts and their respective viruses include: the deer mouse (Peromyscus maniculatus) in Canada and the western United States, SNV (12,13); the white-footed mouse (Peromyscus leucopus) in the northeastern United States, NYV (3); the hispid cotton rat
(Sigmodon hispidus) in Florida, BCCV and TAMV (4,14); the marsh rice rat (Oryzomys palustris) in the southeastern United States, BAYV (15-17); the fulvous colilargo (Oligoryzomys fidvescens) in Panama, CHOV (6); the California mouse (Peromyscus californicus) in California, BCNV (18); and the white-throated woodrat (Neotoma albigula) in New Mexico, WWAV (19).
Although the hispid cotton rat
may be the most abundant mammal in north-central Texas, it previously was not documented in Collin County (Dalquest & Horner 1984; Davis & Schmidly 1994).
Also in 1990, Stangl and Dalquest (1990) published criteria to separate the yellow-nosed cotton rat from the hispid cotton rat
(Sigmodon hispidus) on characters of the upper first molar.