| Mechanisms of kin discrimination inferred from pedigrees and the spatial distribution of mates. | Where animals avoid inbreeding, different mechanisms of kin discrimination can leave different 'signatures' in the patterns of observed mate relationship. For example, consider a species with no paternal care. If a female avoids mating with familiar individuals, one would expect a deficit of offspring whose parents are maternal half-siblings, but paternal half-siblings would be unfamiliar with each other and thus have offspring at the frequency expected by chance. If spatial cues are used to avo ... | 2011 | 21883584 |
| recent demographic bottlenecks are not accompanied by a genetic signature in banner-tailed kangaroo rats (dipodomys spectabilis). | single-sample methods of bottleneck detection are now routine analyses in studies of wild populations and conservation genetics. three common approaches to bottleneck detection are the heterozygosity excess, mode-shift, and m-ratio tests. empirical groundtruthing of these methods is difficult, but their performances are critical for the accurate reconstruction of population demography. we use two banner-tailed kangaroo rat (dipodomys spectabilis) populations from southeastern arizona (usa) that ... | 2007 | 17561905 |
| derivation of soil-screening thresholds to protect the chisel-toothed kangaroo rat from uranium mine waste in northern arizona. | chemical data from soil and weathered waste material samples collected from five uranium mines north of the grand canyon (three reclaimed, one mined but not reclaimed, and one never mined) were used in a screening-level risk analysis for the arizona chisel-toothed kangaroo rat (dipodomys microps leucotis); risks from radiation exposure were not evaluated. dietary toxicity reference values were used to estimate soil-screening thresholds presenting risk to kangaroo rats. sensitivity analyses indic ... | 2013 | 23604138 |