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Assessing Burrowing, Nest Construction, and Hoarding in Mice
Published on: January 5, 2012
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Interspecific variation in cooperative burrowing behavior by Peromyscus mice
Nicole L Bedford1,2,3,4, Jesse N Weber2,3,5, Wenfei Tong2,3
1Howard Hughes Medical Institute Harvard University Cambridge Massachusetts 02138 USA.
Evolution Letters
|August 8, 2022
Summary
Deer mice exhibit varying behavioral flexibility based on social context. Monogamous Peromyscus polionotus pairs build longer burrows cooperatively, showing enhanced social cohesion improves digging efficiency.
Area of Science:
- Behavioral Ecology
- Animal Behavior
- Evolutionary Biology
Background:
- Animals display behavioral flexibility influenced by social context, but this capacity varies across species.
- Deer mice (Peromyscus) present a model system for studying interspecific variation in social behavior due to divergent mating systems.
Purpose of the Study:
- To investigate interspecific differences in behavioral flexibility, specifically burrowing behavior, across three deer mouse species.
- To determine how social context (individual vs. pair, same-sex vs. opposite-sex pairs) affects burrow construction in Peromyscus.
Main Methods:
- Comparative analysis of burrow dimensions constructed by individual and paired mice across three Peromyscus species.
- Development and utilization of a novel burrowing assay with video recording to observe cooperative digging in Peromyscus polionotus.
Main Results:
- Peromyscus polionotus pairs built significantly longer burrows than individuals, with opposite-sex pairs constructing longer burrows than same-sex pairs.
- Contrary to expectations, Peromyscus polionotus did not increase digging time with opposite-sex partners but exhibited greater social cohesion, leading to more efficient cooperative digging.
Conclusions:
- Social context profoundly modulates innate behaviors like burrowing in deer mice.
- Interspecific variation in behavioral flexibility, particularly in response to social cues, may be linked to differences in social systems and cohesion.
