Interference from adults forces young red knots to forage for longer and in dangerous places
In birds and mammals, juvenile and adult foragers are often found apart from each other. In this study, we found this is also true for red knots, Calidris canutus canutus , wintering on the intertidal flats of Banc d’Arguin, Mauritania. Not only did juveniles feed separately from adults, they also f...
Published in: | Animal Behaviour |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://hdl.handle.net/11370/af19f017-a20f-44a2-af1a-5a0fa8acf430 https://research.rug.nl/en/publications/af19f017-a20f-44a2-af1a-5a0fa8acf430 https://doi.org/10.1016/j.anbehav.2013.11.020 https://pure.rug.nl/ws/files/2338465/2014AnimBehavvdHout.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/af19f017-a20f-44a2-af1a-5a0fa8acf430 2024-06-02T08:04:48+00:00 Interference from adults forces young red knots to forage for longer and in dangerous places van den Hout, Piet J. van Gils, Jan A. Robin, Frédéric van der Geest, Matthijs Dekinga, Anne Piersma, Theunis 2014 application/pdf https://hdl.handle.net/11370/af19f017-a20f-44a2-af1a-5a0fa8acf430 https://research.rug.nl/en/publications/af19f017-a20f-44a2-af1a-5a0fa8acf430 https://doi.org/10.1016/j.anbehav.2013.11.020 https://pure.rug.nl/ws/files/2338465/2014AnimBehavvdHout.pdf eng eng https://research.rug.nl/en/publications/af19f017-a20f-44a2-af1a-5a0fa8acf430 info:eu-repo/semantics/openAccess van den Hout , P J , van Gils , J A , Robin , F , van der Geest , M , Dekinga , A & Piersma , T 2014 , ' Interference from adults forces young red knots to forage for longer and in dangerous places ' , Animal Behaviour , vol. 88 , pp. 137-146 . https://doi.org/10.1016/j.anbehav.2013.11.020 predator interference habitat choice food–safety trade-off danger-prone foraging age segregation article 2014 ftunigroningenpu https://doi.org/10.1016/j.anbehav.2013.11.020 2024-05-07T17:59:46Z In birds and mammals, juvenile and adult foragers are often found apart from each other. In this study, we found this is also true for red knots, Calidris canutus canutus , wintering on the intertidal flats of Banc d’Arguin, Mauritania. Not only did juveniles feed separately from adults, they also fed at places where they were more vulnerable to predation by large falcons. That the dangerous areas used by juveniles were no better feeding areas led us to reject the foodesafety trade-off that explained age-related distribution differences in many earlier studies. Instead, juveniles were displaced by adults in dyadic interactions which suggests that they suffered from interference from adults. Juveniles retreated to feeding areas that were more dangerous and yielded lower intake rates, and coped by extending foraging time by using higher, nearshore intertidal areas that were exposed for longer. When disturbed by predators in these nearshore areas, juveniles continued feeding whereas adults left. Thus, rather than compensating for increased predation danger by higher intake rates, on the Banc d’Arguin red knot juveniles foraged for longer. Article in Journal/Newspaper Calidris canutus Red Knot University of Groningen research database Animal Behaviour 88 137 146 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
predator interference habitat choice food–safety trade-off danger-prone foraging age segregation |
spellingShingle |
predator interference habitat choice food–safety trade-off danger-prone foraging age segregation van den Hout, Piet J. van Gils, Jan A. Robin, Frédéric van der Geest, Matthijs Dekinga, Anne Piersma, Theunis Interference from adults forces young red knots to forage for longer and in dangerous places |
topic_facet |
predator interference habitat choice food–safety trade-off danger-prone foraging age segregation |
description |
In birds and mammals, juvenile and adult foragers are often found apart from each other. In this study, we found this is also true for red knots, Calidris canutus canutus , wintering on the intertidal flats of Banc d’Arguin, Mauritania. Not only did juveniles feed separately from adults, they also fed at places where they were more vulnerable to predation by large falcons. That the dangerous areas used by juveniles were no better feeding areas led us to reject the foodesafety trade-off that explained age-related distribution differences in many earlier studies. Instead, juveniles were displaced by adults in dyadic interactions which suggests that they suffered from interference from adults. Juveniles retreated to feeding areas that were more dangerous and yielded lower intake rates, and coped by extending foraging time by using higher, nearshore intertidal areas that were exposed for longer. When disturbed by predators in these nearshore areas, juveniles continued feeding whereas adults left. Thus, rather than compensating for increased predation danger by higher intake rates, on the Banc d’Arguin red knot juveniles foraged for longer. |
format |
Article in Journal/Newspaper |
author |
van den Hout, Piet J. van Gils, Jan A. Robin, Frédéric van der Geest, Matthijs Dekinga, Anne Piersma, Theunis |
author_facet |
van den Hout, Piet J. van Gils, Jan A. Robin, Frédéric van der Geest, Matthijs Dekinga, Anne Piersma, Theunis |
author_sort |
van den Hout, Piet J. |
title |
Interference from adults forces young red knots to forage for longer and in dangerous places |
title_short |
Interference from adults forces young red knots to forage for longer and in dangerous places |
title_full |
Interference from adults forces young red knots to forage for longer and in dangerous places |
title_fullStr |
Interference from adults forces young red knots to forage for longer and in dangerous places |
title_full_unstemmed |
Interference from adults forces young red knots to forage for longer and in dangerous places |
title_sort |
interference from adults forces young red knots to forage for longer and in dangerous places |
publishDate |
2014 |
url |
https://hdl.handle.net/11370/af19f017-a20f-44a2-af1a-5a0fa8acf430 https://research.rug.nl/en/publications/af19f017-a20f-44a2-af1a-5a0fa8acf430 https://doi.org/10.1016/j.anbehav.2013.11.020 https://pure.rug.nl/ws/files/2338465/2014AnimBehavvdHout.pdf |
genre |
Calidris canutus Red Knot |
genre_facet |
Calidris canutus Red Knot |
op_source |
van den Hout , P J , van Gils , J A , Robin , F , van der Geest , M , Dekinga , A & Piersma , T 2014 , ' Interference from adults forces young red knots to forage for longer and in dangerous places ' , Animal Behaviour , vol. 88 , pp. 137-146 . https://doi.org/10.1016/j.anbehav.2013.11.020 |
op_relation |
https://research.rug.nl/en/publications/af19f017-a20f-44a2-af1a-5a0fa8acf430 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.anbehav.2013.11.020 |
container_title |
Animal Behaviour |
container_volume |
88 |
container_start_page |
137 |
op_container_end_page |
146 |
_version_ |
1800749455755968512 |