However, whether this approach is effective within the two most common instructional models of undergraduate science laboratories -- expository, which confirms predetermined outcomes, and inquir...Human development is changing the landscape in many ways that affect the distribution of wild species of mammals. We studied groups of pine voles,Microtus pinetorum, that were disrupted by the replacement of the breeding male and compared them with intact family groups. Control animals w...We experimentally investigated effects of female immigrants on demography and social organization of prairie vole (Microtus ochrogaster) populations. In a previous laboratory study, female prairie voles (Microtus ochrogaster) showed significant social and sexual preferences for males with longer microsatellite DNA within the avpr1a gene encoding the vasopressin 1a receptor, as predicted if females sele...Most of our understanding of rodent sociality comes from studies of species from the northern temperate zone with a few exceptions. We tested female preferences for males that varied in spatial ability and aggressiveness, traits likely to be selected by scramble and contest competition, respectively. Dominance ranks of wild-caught males were determined using neutral arena trials, with the winner of two of three tr...The partitioning of reproduction in animal societies is a topic of interest to those studying animal behaviour. 143 Upham Hall Oxford, OH 45056 Advising: 513-529-3031 Dean's Office: 513-529-1234 [email protected].

Mothers were...Philopatry can arise from lack of a suitable territory (ecological constraints hypothesis) or a potential mate (limited mate hypothesis) outside the natal area. Thus, if individuals move to another group or switch nests to maximize their reproductive opportunities, they should move to groups or sites where they minimize competition for resources or mates and where they can find potential mates. Caviomorphs are New World rodents, primarily found in the Neotropics, for which data on sociality is available from only about one-third of the approximately 250 extant species. Dams were given retrieval tests in a neutral arena...22 male and 18 female laboratory-bred virgin prairie voles (aged 31–38 days) were given simultaneous access to small and large opposite-sex voles for 20 min and for 48 hrs. The reproductive performance of family groups retaining two juveniles was compared with that of families in which all juveniles were removed when the subsequent litter was born. Nancy Solomon Professor at Miami University Cincinnati, Ohio Area 219 connections.
Prairie voles (Microtus ochrogaster) are socially monogamous rodents that sometimes breed...The neural and molecular mechanisms underlying social behavior – including their functional significance and evolution – can only be fully understood using data obtained under multiple social, environmental, and physiological conditions. We used grid-trapping data from replicate populations of prairie voles living in 0.1-ha small mammal enclosures at 2 different initial densities to examine the extent to which opposite-sex...We tested the hypothesis that female prairie vole (Microtus ochrogaster) residents change their space use patterns in response to immigration pressure. It begins with a summary of the evolution, phylogeny, and biogeography of...Communal rearing enhances the quality of offspring weaned by some social vertebrates. Allowing an immigrant into the group may be beneficial or costly depending on the characteristics of the immigrant as well as the composition of the group. Comparative studies aid in our understanding of specific conditions favouring the initial evolution of different types of social behaviours, yet there is much unexplained intraspecific variation in the expression of social behaviour that comparative studies have not yet addressed. We do not accept anonymous comments. Specifically, we tested the predictions that males with better spatial abili...Communal rearing of offspring may help mothers maximize their investment in offspring at a reduced cost to their own bodily condition, thus maximizing their potential for reproductive success.

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