Spatial Memory Drives Foraging Strategies of Wolves, but in Highly Individual Ways
Gurarie, E., Bracis, C., Brilliantova, A., Kojola, I., Suutarinen, J., Ovaskainen, O., Potluri, S., & Fagan, W. F. (2022). Spatial Memory Drives Foraging Strategies of Wolves, but in Highly Individual Ways. Frontiers in Ecology and Evolution, 10, Article 768478. https://doi.org/10.3389/fevo.2022.768478
Published inFrontiers in Ecology and Evolution
© 2022 the Authors
The ability of wild animals to navigate and survive in complex and dynamic environments depends on their ability to store relevant information and place it in a spatial context. Despite the centrality of spatial memory, and given our increasing ability to observe animal movements in the wild, it is perhaps surprising how difficult it is to demonstrate spatial memory empirically. We present a cognitive analysis of movements of several wolves (Canis lupus) in Finland during a summer period of intensive hunting and den-centered pup-rearing. We tracked several wolves in the field by visiting nearly all GPS locations outside the den, allowing us to identify the species, location and timing of nearly all prey killed. We then developed a model that assigns a spatially explicit value based on memory of predation success and territorial marking. The framework allows for estimation of multiple cognitive parameters, including temporal and spatial scales of memory. For most wolves, fitted memory-based models outperformed null models by 20 to 50% at predicting locations where wolves chose to forage. However, there was a high amount of individual variability among wolves in strength and even direction of responses to experiences. Some wolves tended to return to locations with recent predation success—following a strategy of foraging site fidelity—while others appeared to prefer a site switching strategy. These differences are possibly explained by variability in pack sizes, numbers of pups, and features of the territories. Our analysis points toward concrete strategies for incorporating spatial memory in the study of animal movements while providing nuanced insights into the behavioral strategies of individual predators. ...
PublisherFrontiers Media SA
ISSN Search the Publication Forum2296-701X
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Related funder(s)European Commission
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThe authors are indebted to the many field workers and volunteers who contributed to collecting summer predation field data on all the wolf studies. NSF grant DBI1915347 to WF and EG further supported this research. OO was funded by Academy of Finland (grant no. 309581), Jane and Aatos Erkko Foundation, Research Council of Norway through its Centres of Excellence Funding Scheme (223257), and the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no 856506; ERC-synergy project LIFEPLAN). ...
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