Rodent Societies: An Ecological & Evolutionary Perspective

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S ocial behaviorarises from a complex interplay of numerous and often-competing sensory stimuli, the physiological and motivatio ...

Meredith et al. 1999). Most species exhibit a promiscuous mating system. Promiscuous species show little in the way of social ti ...

rotrophic factor (BDNF) is important for the proliferation of neurons as well as for their survival and growth. In some brain ar ...

a good place to start examining rodent social behavior is the amygdala, the “emotional brain.” The amygdala has been implicated ...

nogamous Peromyscusspecies have a higher density of va- sopressin receptors than do promiscuous species (Insel et al. 1991; Best ...

sion after mating are not limited to males. Sexually experi- enced breeder female prairie voles display more aggression and less ...

these effects are antagonized by serotonin (Delville et al. 1996; Ferris et al. 1997) or galanin (Ferris et al. 1999). In additi ...

tion of D 1 dopamine receptors impairs the formation of pair bonds induced either by mating or by D 2 receptor activa- tion (Ara ...

other individual. In this regard, interplay between the va- sopressin and dopamine systems may have an important impact on socia ...

oxytocin, or to altered gonadal hormone levels all have been shown to impact social behaviors (Axelson et al. 1999; Stribley and ...

T he behavioral biology of rodents signifi- cantly influences their life-history strategies and re- productive success, and deve ...

General Issues in Behavioral Development In an epigenetic approach to development, ontogeny is viewed as a series of interaction ...

nections during postnatal life (Alberts 1984; see also Gott- lieb 1981). Thus nongenetic maternal influences begin pre- natally ...

sion of reproductive organs (Goel and Lee 1996; Demas and Nelson 1998; Lee and Gorman 2000). Regardless of the particular cue si ...

alarm call but does not show its own responses until it can locomote independently. Second, neither process of influ- ence impli ...

have two types of alarm calls, which elicit two different be- havioral responses by listeners. Whistles, which are single, nonre ...

pers. obs.) then selection should favor the early acquisition of behaviors that would help young survive a predator en- counter. ...

Figure 17.3 Developmental timeline of S. beldingi,from birth through natal emergence and overwintering to adulthood. Flow diagra ...

young are dependent on their parents. In species with ex- tended dependency on parental care, young have many op- portunities to ...