NDLI: State-dependent foraging: lactating voles adjust their foraging behavior according to the presence of a potential nest predator and season

Content Provider	Springer Nature Link
Author	Liesenjohann, Thilo Liesenjohann, Monique Trebaticka, Lenka Sundell, Janne Haapakoski, Marko Ylönen, Hannu Eccard, Jana A.
Copyright Year	2015
Abstract	Parental care often produces a trade-off between meeting nutritional demands of offspring and the duties of offspring protection, especially in altricial species. Parents have to leave their young unattended for foraging trips, during which nestlings are exposed to predators. We investigated how rodent mothers of altricial young respond to risk of nest predation in their foraging decisions. We studied foraging behavior of lactating bank voles (Myodes glareolus) exposed to a nest predator, the common shrew (Sorex araneus). We conducted the experiment in summer (high resource provisioning for both species) and autumn (less food available) in 12 replicates with fully crossed factors “shrew presence” and “season.” We monitored use of feeding stations near and far from the nest as measurement of foraging activity and strategic foraging behavior. Vole mothers adapted their strategies to shrew presence and optimized their foraging behavior according to seasonal constraints, resulting in an interaction of treatment and season. In summer, shrew presence reduced food intake from feeding stations, while it enhanced intake in autumn. Shrew presence decreased the number of visited feeding stations in autumn and concentrated mother’s foraging efforts to fewer stations. Independent of shrew presence or season, mothers foraged more in patches further away from the nest than near the nest. Results indicate that females are not investing in nest guarding but try to avoid the accumulation of olfactory cues near the nest leading a predator to the young. Additionally, our study shows how foraging strategies and nest attendance are influenced by seasonal food provision.
Starting Page	747
Ending Page	754
Page Count	8
File Format	PDF
ISSN	03405443
Journal	Behavioral Ecology and Sociobiology
Volume Number	69
Issue Number	5
e-ISSN	14320762
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-04-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Myodes glareolus Optimal foraging Sorex araneus Nest protection Seasonality Interference Behavioral Sciences Zoology Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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State-dependent foraging: lactating voles adjust their foraging behavior according to the presence of a potential nest predator and season

State-dependent foraging: lactating voles adjust their foraging behavior according to the presence of a potential nest predator and season

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State-dependent foraging: lactating voles adjust their foraging behavior according to the presence of a potential nest predator and season

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