Rodent Societies: An Ecological & Evolutionary Perspective

tire boreal forest of North America. The red squirrel is highly territorial, asocial except during mating, has one or two litter ...

spite of living under these constraints (Sherman and Mor- ton 1984). Socially-induced reproductive suppression Reproductive supp ...

länder et al. 2003). Thus high GC concentration in the sub- ordinates may inhibit GnRH release which results in lower progestero ...

stress of predators on natural rodent populations comes from work on ground squirrels. They are known to be ex- tremely sensitiv ...

ratory populations as to the possibilities. There are three periods where the stress axis is sensitive to permanent or- ganizati ...

2002; Amrein et al. 2004; Barker et al. 2005). To put our understanding on a firm foundation, neurogenesis must ul- timately be ...

A t some pointin their lives, nearly all organisms are faced with the “decision” of being philopat- ric — remaining where they a ...

relative safety and familiarity of their birth areas, expose themselves to risk, and seek out and settle in new homes? Second, w ...

overlap with that of her father. Therefore, male but not fe- male mice should disperse, to reduce the likelihood of in- breeding ...

creased density decreased the probability of successful com- petition by young females for territories during the next breeding ...

the colony (Brody and Armitage 1985). Removal studies with California ground squirrels also resulted in rapid re- colonization o ...

productive success at the beginning of the reproductive life- span of early dispersers. Finally, early dispersal by young males ...

(Sherman 1976; Salsbury and Armitage 1994; Bowman et al. 1999; Maier 2002), raising the possibility that peri- odic long-range d ...

as has been observed in Columbian ground squirrels (Har- ris and Murie 1984). Demand for these resources typically exceeds suppl ...

Numerous studies have provided support for the AFDH in various mole-rat species (e.g., Spinks et al. 1999; Hazell et al. 2000; S ...

Figure 13.2 (A) Infanticide during the lactation period of Belding’s ground squirrels. Reproductive females aggressively defend ...

systems. For example, growth and development tend to oc- cur over a longer time period in large-bodied compared to small-bodied ...

ing fitness. Because of the high turnover rate of adult males, young females typically are not exposed to their fathers, and con ...

quences for the genetic structure as well as the conservation of populations and species. A variety of proximate triggers for na ...

S ocial groups of related females typify several mam- malian species. These kin-based groups are found par- ticularly in primate ...