The hypsodont molars of the lower jaws often fall out of the alveoli, but the splayed roots of the p4 and the long arc of the incisor commonly permit those teeth of Perognathus
and Chaetodipus to stay in place.
The data suggest that preference of this species for open areas leaves a majority of the areas under the canopy open for settlement by its competitors, Chaetodipus and Perognathus
9997 rat) Error (Time) 108 Perognathus
MNA treatment 1 0.
For analysis of differences with respect to body size of prey, rodents and shrews were divided into three size classes: >75 g (Geomys personatus, Neotoma micropus, and Sigmodon hispidus); 30-40 g (Chaetodipus hispidus, Liomys irroratus, and Onychomys leucogaster); <20 g (Cryptotis parva, Notiosorex crawfordi, Perognathus
merriami, Peromyscus leucopus, and Reithrodontomys fulvescens).
The systematic status of Perognathus
merriami in south Texas appears to follow similar seasonal trends in activity, as do other species of Perognathus
, with decreased activity during winter (Kenagy 1973; O'Farrell 1974).
longimembris, Dipodomys merriami, Neotoma lepida, Peromyscus maniculatus, P.
heermanni, and Perognathus
inornatus caught on exclusion and control areas at Allensworth Ecological Reserve, Tulare County, California, from August 2009-October 2010.
Vertebrate prey included several species of mice (Peromyscus, Perognathus
and Reithrodontomys), , lizards and snakes.
sargenti, and undetermined species of Perognathus
and Prodipod omys (Reynolds and Lindsay 1999).
The North American rodent genus Perognathus
occupies the western one-half of North America stretching from Canada to central Mexico (Schmidly et al.
douglassi) and a silky pocket mouse ( Perognathus
flavus), specifically in the desert grasslands in or near the northern Sonoran Desert (Arizona and New Mexico, respectively).
They are probably local and directly related to the ecological and physiological tolerances of suites of related species, for example members of the same genus such as Dipodomys (kangaroo rats), Chaetodipus and Perognathus
Similarly, we had insufficient captures of Sigmodon hispidus and Spermophilus tridecemlineatus in 2002 and insufficient captures of Perognathus
Only a population increase of 1,309% for Perognathus
flavus in grass draws was sufficient to cause a vegetation type x year interaction.