| phylogeography of the pallid kangaroo mouse, microdipodops pallidus: a sand-obligate endemic of the great basin, western north america. | aim: kangaroo mice, genus microdipodops merriam, are endemic to the great basin and include two species: m. pallidus merriam and m. megacephalus merriam. the pallid kangaroo mouse, m. pallidus, is a sand-obligate desert rodent. our principal intent is to identify its current geographical distribution and to formulate a phylogeographical hypothesis for this taxon. in addition, we test for orientation patterns in haplotype sharing for evidence of past episodes of movement and gene flow. location: ... | 2008 | 19536341 |
| effects of seed distribution and competitors on seed harvesting efficiency in heteromyid rodents. | the foraging strategies of four naturally co-existing heteromyid rodent species were investigated: dipodomys deserti (≈100 g), d. merriami (≈38 g), microdipodops pallidus (≈13 g), and perognathus longimembris (≈7 g). in 208 over-night laboratory foraging trials animals were provided with millet seed distributed in clumped and scattered patterns. net removal of seeds from the foraging arena and amounts of seeds in cheek pouches and in caches were determined. when alone in an areana none of these ... | 1979 | 28310290 |