Rodent Societies: An Ecological & Evolutionary Perspective

et al. 1994; Huchon and Douzery 2001; Honeycutt et al. 2003). The octodontoids are thought to have originated 13 to 18 million y ...

animals may be more affected by variation in surface habi- tats than are ctenomyids, suggesting that habitat structure may have ...

Table 34.1 Summary of natural and life history attributes of octodontid rodents Body Social Species (common name) mass (g) Princ ...

Figure 34.2 Geographic distribution of Octodon degus. Range data were compiled from Redford and Eisenberg (1992). Inset: photo o ...

groups, however, is unknown. Within social groups, indi- viduals appear to cooperate in several ways. For example, multiple anim ...

site, which may remain in the same location for multiple years (Lacey, Ebensperger, and Wieczorek, unpublished data). Within a g ...

migrant adult male. Most dispersal occurs within the local population; simulation analyses based on observed demo- graphic patte ...

Intrinsic benefits of group living in degus Studies of degus have emphasized the intrinsic benefits of group living and communal ...

As this synopsis suggests, the approaches used to explore the adaptive bases for group living have differed between studies of o ...

are available. Descriptions of juvenile C. talarumindicate that at birth the eyes are closed and young lack a full pelage (Weir ...

not provide a comprehensive explanation for patterns of so- ciality in octodontids and ctenomyids. Specialization for subterrane ...

costs, predation pressures, and the production of precocial young may all influence the behavior of these animals, the specific ...

R ocky habitatis found throughout the world, and almost everywhere that it exists, one or more rock-dwelling species of mammal h ...

of rock-specialist rodents (rodents that are confined to liv- ing in crevices within rocks). The study carried out by Mares and ...

or rocky substrate for one reason or another (fig. 35.1). This figure includes genera that sometimes live in rocky habitat (Otot ...

(Bolivian big-eared mice;Auliscomys boliviensisand moun- tain viscachas; Lagidium peruanum;Pearson 1948; dassie rats and rock hy ...

Rocky substrate as a water basin Rocky substrate is important for species living in xeric re- gions of the world because depress ...

fourth of all rodent genera are known to associate with rocky habitat (fig. 35.1). Defining an Obligate Rock-Specialist Obligate ...

structure could be obtained from the literature (these data are compiled in table 35.1). Where possible, literature re- views su ...

lar 1996c). Although this spacing arrangement would sug- gest a promiscuous mating system, only one male sires all offspring in ...