Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots
1. Variation in foraging tactics and diet is usually attributed to differences in morphology, experience and prey availability. Recently, consistent individual differences in behaviour (personality) have been shown to be associated with foraging strategies. Bolder or more exploratory individuals are...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9299047/ http://www.ncbi.nlm.nih.gov/pubmed/34753198 https://doi.org/10.1111/1365-2656.13632 |
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ftpubmed:oai:pubmedcentral.nih.gov:9299047 2023-05-15T15:48:29+02:00 Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots Ersoy, Selin Beardsworth, Christine E. Dekinga, Anne van der Meer, Marcel T. J. Piersma, Theunis Groothuis, Ton G. G. Bijleveld, Allert I. 2021-11-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9299047/ http://www.ncbi.nlm.nih.gov/pubmed/34753198 https://doi.org/10.1111/1365-2656.13632 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9299047/ http://www.ncbi.nlm.nih.gov/pubmed/34753198 http://dx.doi.org/10.1111/1365-2656.13632 © 2021 The Authors. Journal of Animal Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. CC-BY-NC-ND J Anim Ecol Research Articles Text 2021 ftpubmed https://doi.org/10.1111/1365-2656.13632 2022-07-31T02:18:00Z 1. Variation in foraging tactics and diet is usually attributed to differences in morphology, experience and prey availability. Recently, consistent individual differences in behaviour (personality) have been shown to be associated with foraging strategies. Bolder or more exploratory individuals are predicted to have a faster pace‐of‐life and offset the costs of moving more or in risky areas, with higher energetic gains by encountering profitable foraging opportunities and prey. However, the relationship between personality, foraging and diet is poorly understood. 2. We investigated how exploratory behaviour in red knots Calidris canutus is associated with foraging tactics and diet by combining laboratory experiments, field observations and stable isotope analysis. First, we developed a mobile experimental arena to measure exploration speed in controlled settings. We validated the method by repeated testing of individuals over time and contexts. This setup allowed us to measure exploratory personality at the field site, eliminating the need to bring birds into captivity for long periods of time. After releasing birds within days of their capture, we asked whether exploration speed was associated with differences in foraging tactics and diet in the wild. 3. We found that tactile foraging red knots mainly caught hard‐shelled prey that are buried in the sediment, whereas visual foraging knots only captured soft preys located close to or on the surface. We also found that faster explorers showed a higher percentage of visual foraging than slower explorers. By contrast, morphology (bill length and gizzard size) had no significant effect on foraging tactics. Diet analysis based on δ(15)N and δ(13)C stable isotope values of plasma and red blood cells confirmed our field observations with slower explorers mainly consumed hard‐shelled prey while faster explorers consumed more soft than hard‐shelled prey. 4. Our results show that foraging tactics and diet are associated with a personality trait, independent of ... Text Calidris canutus PubMed Central (PMC) Journal of Animal Ecology 91 2 356 366 |
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Research Articles |
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Research Articles Ersoy, Selin Beardsworth, Christine E. Dekinga, Anne van der Meer, Marcel T. J. Piersma, Theunis Groothuis, Ton G. G. Bijleveld, Allert I. Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots |
topic_facet |
Research Articles |
description |
1. Variation in foraging tactics and diet is usually attributed to differences in morphology, experience and prey availability. Recently, consistent individual differences in behaviour (personality) have been shown to be associated with foraging strategies. Bolder or more exploratory individuals are predicted to have a faster pace‐of‐life and offset the costs of moving more or in risky areas, with higher energetic gains by encountering profitable foraging opportunities and prey. However, the relationship between personality, foraging and diet is poorly understood. 2. We investigated how exploratory behaviour in red knots Calidris canutus is associated with foraging tactics and diet by combining laboratory experiments, field observations and stable isotope analysis. First, we developed a mobile experimental arena to measure exploration speed in controlled settings. We validated the method by repeated testing of individuals over time and contexts. This setup allowed us to measure exploratory personality at the field site, eliminating the need to bring birds into captivity for long periods of time. After releasing birds within days of their capture, we asked whether exploration speed was associated with differences in foraging tactics and diet in the wild. 3. We found that tactile foraging red knots mainly caught hard‐shelled prey that are buried in the sediment, whereas visual foraging knots only captured soft preys located close to or on the surface. We also found that faster explorers showed a higher percentage of visual foraging than slower explorers. By contrast, morphology (bill length and gizzard size) had no significant effect on foraging tactics. Diet analysis based on δ(15)N and δ(13)C stable isotope values of plasma and red blood cells confirmed our field observations with slower explorers mainly consumed hard‐shelled prey while faster explorers consumed more soft than hard‐shelled prey. 4. Our results show that foraging tactics and diet are associated with a personality trait, independent of ... |
format |
Text |
author |
Ersoy, Selin Beardsworth, Christine E. Dekinga, Anne van der Meer, Marcel T. J. Piersma, Theunis Groothuis, Ton G. G. Bijleveld, Allert I. |
author_facet |
Ersoy, Selin Beardsworth, Christine E. Dekinga, Anne van der Meer, Marcel T. J. Piersma, Theunis Groothuis, Ton G. G. Bijleveld, Allert I. |
author_sort |
Ersoy, Selin |
title |
Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots |
title_short |
Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots |
title_full |
Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots |
title_fullStr |
Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots |
title_full_unstemmed |
Exploration speed in captivity predicts foraging tactics and diet in free‐living red knots |
title_sort |
exploration speed in captivity predicts foraging tactics and diet in free‐living red knots |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9299047/ http://www.ncbi.nlm.nih.gov/pubmed/34753198 https://doi.org/10.1111/1365-2656.13632 |
genre |
Calidris canutus |
genre_facet |
Calidris canutus |
op_source |
J Anim Ecol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9299047/ http://www.ncbi.nlm.nih.gov/pubmed/34753198 http://dx.doi.org/10.1111/1365-2656.13632 |
op_rights |
© 2021 The Authors. Journal of Animal Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1111/1365-2656.13632 |
container_title |
Journal of Animal Ecology |
container_volume |
91 |
container_issue |
2 |
container_start_page |
356 |
op_container_end_page |
366 |
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1766383450936311808 |