Influences on nest and latrine decision-making in meadow voles


SOCIETY FOR INTEGRATIVE AND COMPARATIVE BIOLOGY
2021 VIRTUAL ANNUAL MEETING (VAM)
January 3 – Febuary 28, 2021

Meeting Abstract


35-10  Sat Jan 2  Influences on nest and latrine decision-making in meadow voles Rohrer, KN*; Ferkin, MH; University of Memphis; University of Memphis knrohrer@memphis.edu

Nest and latrine location choice can be a critical part of territory establishment. How animals determine a suitable place to live is dependent on many factors, one of which is their own natal habitat. Natal habitat preference induction (NHPI) predicts that animals either are selected by their habitat to prefer that habitat or that cues of the natal habitat are used to find similar habitats after dispersal. We extend NHPI to include how an animal uses and organizes its surroundings as well as site choice. We tracked the nest and latrine locations of meadow voles (Microtus pennsylvanicus) across several weeks to determine consistency of a vole’s choice and if there were siblings made similar choices. Then we tracked the nest and latrine locations of pregnant voles and their subsequent offspring to determine the impact on maternal nest and latrine placement on these choices. An individual’s choices were repeatable for nest (0.23) and latrines (0.27). Heritability of the behaviors was also considered. Broad-sense heritability was high (0.5-0.6), but narrow-sense heritability was comparable to other species nest-building behaviors (0.2). Nest construction also significantly declined as voles aged. A lack of effect of the maternal location choices on offspring location choices suggests a high degree of environmental or social effects on nest and latrine location choices. This may allow a greater diversity in how a habitat is used by different generations of meadow vole families.

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