Rodent Societies: An Ecological & Evolutionary Perspective

lar, resource holders (territorial or dominant males) always countermark the marks of intruders or subordinates, be- cause these ...

et al.’s (2001) study of gonadectomised meadow voles, in which females take into account both mark position and testosterone tit ...

made to validate some findings in the field, with mixed suc- cess (Mahady and Wolff 2002; Wolff 2003c, 2004), al- though some ex ...

Male marmot 100 moved into the Grass Group. Male 69 seemed to oppose 100’s sudden entry, but the females of the group appeared t ...

Table 23.1 Summary of reports of nonparental infanticide in rodents Family Species Common name MN MC FN FC I Sources Caviidae Ga ...

juvenile recruitment per pregnancy has been shown to de- crease under wild conditions as the number of adult female (but not mal ...

Adaptive explanations Hypothesis 1. Direct acquisition of nutritional resources In rodents, infanticide by males and by females ...

sumes that adult marauders are able to determine the sex of potential victims prior to killing them. Females Female Belding’s gr ...

1989, 1991). While functions are not mutually exclusive, female white-footed mice that are pregnant or lactating usually consume ...

mots (Armitage and Gurri-Glass 1994), and in the yellow- toothed cavy (Galea musteloides; Künkele and Hoeck 1995). The biologica ...

that do not eliminate the female’s original litter (Mallory and Brooks 1978; Webster et al. 1981; Vom Saal and Howard 1982; McCa ...

Ebensperger 1998a; and Norway rats, Erskine et al. 1978; Mennella and Moltz 1988), even if infanticidal males are not artificial ...

creases concomitant with an overlap in female territories (Rodd and Boonstra 1988; Schauber and Wolff 1996; Wolff et al. 2002). ...

of prairie voles in outdoor enclosures, Mahady and Wolff (2002) replaced resident males with unfamiliar males every 10 days. The ...

deer mouse, the white-footed mouse, the black-tailed prai- rie dog, the California ground squirrel, the Columbian ground squirre ...

source competition. Evidence supporting the idea that indi- viduals commit infanticide to avoid misdirecting parental care to un ...

Beaver Natural History The Eurasian beaver (Castor fiber) and the North American beaver (Castor canadensis) are the only two ext ...

was found to evolve in the absence of male parental care and in species where females occupied small, exclusive ranges (Komers a ...

sivity and defending a territory against other beavers (Wils- son 1971; Djoshkin and Safonov 1972; Nolet and Rosell 1994; Hartma ...

be influenced by poor habitat quality and the lack of suit- able dispersal sites (Hodgdon 1978; Brooks et al. 1980; Smith 1997; ...