Diet preferences as the cause of individual differences rather than the consequence
Behavioural variation within a species is usually explained as the consequence of individual variation in physiology. However, new evidence suggests that the arrow of causality may well be in the reverse direction: behaviours such as diet preferences cause the differences in physiological and morpho...
Published in: | Journal of Animal Ecology |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2016
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Online Access: | https://hdl.handle.net/11370/c96694c8-9ceb-4ca8-9b75-503f24266f67 https://research.rug.nl/en/publications/c96694c8-9ceb-4ca8-9b75-503f24266f67 https://doi.org/10.1111/1365-2656.12549 https://pure.rug.nl/ws/files/61668121/Oudman_et_al_2016_Journal_of_Animal_Ecology.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/c96694c8-9ceb-4ca8-9b75-503f24266f67 2024-09-15T18:00:48+00:00 Diet preferences as the cause of individual differences rather than the consequence Oudman, Thomas Bijleveld, Allert I. Kavelaars, Marwa M. Dekinga, Anne Cluderay, John Piersma, Theunis van Gils, Jan A. 2016-08-01 application/pdf https://hdl.handle.net/11370/c96694c8-9ceb-4ca8-9b75-503f24266f67 https://research.rug.nl/en/publications/c96694c8-9ceb-4ca8-9b75-503f24266f67 https://doi.org/10.1111/1365-2656.12549 https://pure.rug.nl/ws/files/61668121/Oudman_et_al_2016_Journal_of_Animal_Ecology.pdf eng eng https://research.rug.nl/en/publications/c96694c8-9ceb-4ca8-9b75-503f24266f67 info:eu-repo/semantics/openAccess Oudman , T , Bijleveld , A I , Kavelaars , M M , Dekinga , A , Cluderay , J , Piersma , T & van Gils , J A 2016 , ' Diet preferences as the cause of individual differences rather than the consequence ' , Journal of Animal Ecology , vol. 85 , no. 5 , pp. 1378–1388 . https://doi.org/10.1111/1365-2656.12549 AFFECTS FORAGING DECISIONS KNOTS CALIDRIS-CANUTUS MARGINAL VALUE THEOREM RED KNOTS FOOD SHOREBIRDS CHOICE SELECTION EVOLUTIONARY PERSONALITY article 2016 ftunigroningenpu https://doi.org/10.1111/1365-2656.12549 2024-07-01T14:49:23Z Behavioural variation within a species is usually explained as the consequence of individual variation in physiology. However, new evidence suggests that the arrow of causality may well be in the reverse direction: behaviours such as diet preferences cause the differences in physiological and morphological traits. Recently, diet preferences were proposed to underlie consistent differences in digestive organ mass and movement patterns (patch residence times) in red knots (Calidris canutus islandica ). Red knots are molluscivorous and migrant shorebirds for which the size of the muscular stomach (gizzard) is critical for the food processing rate. In this study, red knots (C. c. canutus , n = 46) were caught at Banc d'Arguin, an intertidal flat ecosystem in Mauritania, and released with radio-tags after the measurement of gizzard mass. Using a novel tracking system (time-of-arrival), patch residence times were measured over a period of three weeks. Whether or not gizzard mass determined patch residence times was tested experimentally by offering 12 of the 46 tagged red knots soft diets prior to release; this reduced an individual's gizzard mass by 20-60%. To validate whether the observed range of patch residence times would be expected from individual diet preferences, we simulated patch residence times as a function of diet preferences via a simple departure rule. Consistent with previous empirical studies, patch residence times in the field were positively correlated with gizzard mass. The slope of this correlation, as well as the observed range of patch residence times, was in accordance with the simulated values. The 12 birds with reduced gizzard masses did not decrease patch residence times in response to the reduction in gizzard mass. These findings suggest that diet preferences can indeed cause the observed among-individual variation in gizzard mass and patch residence times. We discuss how early diet experiences can have cascading effects on the individual expression of both behavioural and physiomorphic ... Article in Journal/Newspaper Calidris canutus University of Groningen research database Journal of Animal Ecology 85 5 1378 1388 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
AFFECTS FORAGING DECISIONS KNOTS CALIDRIS-CANUTUS MARGINAL VALUE THEOREM RED KNOTS FOOD SHOREBIRDS CHOICE SELECTION EVOLUTIONARY PERSONALITY |
spellingShingle |
AFFECTS FORAGING DECISIONS KNOTS CALIDRIS-CANUTUS MARGINAL VALUE THEOREM RED KNOTS FOOD SHOREBIRDS CHOICE SELECTION EVOLUTIONARY PERSONALITY Oudman, Thomas Bijleveld, Allert I. Kavelaars, Marwa M. Dekinga, Anne Cluderay, John Piersma, Theunis van Gils, Jan A. Diet preferences as the cause of individual differences rather than the consequence |
topic_facet |
AFFECTS FORAGING DECISIONS KNOTS CALIDRIS-CANUTUS MARGINAL VALUE THEOREM RED KNOTS FOOD SHOREBIRDS CHOICE SELECTION EVOLUTIONARY PERSONALITY |
description |
Behavioural variation within a species is usually explained as the consequence of individual variation in physiology. However, new evidence suggests that the arrow of causality may well be in the reverse direction: behaviours such as diet preferences cause the differences in physiological and morphological traits. Recently, diet preferences were proposed to underlie consistent differences in digestive organ mass and movement patterns (patch residence times) in red knots (Calidris canutus islandica ). Red knots are molluscivorous and migrant shorebirds for which the size of the muscular stomach (gizzard) is critical for the food processing rate. In this study, red knots (C. c. canutus , n = 46) were caught at Banc d'Arguin, an intertidal flat ecosystem in Mauritania, and released with radio-tags after the measurement of gizzard mass. Using a novel tracking system (time-of-arrival), patch residence times were measured over a period of three weeks. Whether or not gizzard mass determined patch residence times was tested experimentally by offering 12 of the 46 tagged red knots soft diets prior to release; this reduced an individual's gizzard mass by 20-60%. To validate whether the observed range of patch residence times would be expected from individual diet preferences, we simulated patch residence times as a function of diet preferences via a simple departure rule. Consistent with previous empirical studies, patch residence times in the field were positively correlated with gizzard mass. The slope of this correlation, as well as the observed range of patch residence times, was in accordance with the simulated values. The 12 birds with reduced gizzard masses did not decrease patch residence times in response to the reduction in gizzard mass. These findings suggest that diet preferences can indeed cause the observed among-individual variation in gizzard mass and patch residence times. We discuss how early diet experiences can have cascading effects on the individual expression of both behavioural and physiomorphic ... |
format |
Article in Journal/Newspaper |
author |
Oudman, Thomas Bijleveld, Allert I. Kavelaars, Marwa M. Dekinga, Anne Cluderay, John Piersma, Theunis van Gils, Jan A. |
author_facet |
Oudman, Thomas Bijleveld, Allert I. Kavelaars, Marwa M. Dekinga, Anne Cluderay, John Piersma, Theunis van Gils, Jan A. |
author_sort |
Oudman, Thomas |
title |
Diet preferences as the cause of individual differences rather than the consequence |
title_short |
Diet preferences as the cause of individual differences rather than the consequence |
title_full |
Diet preferences as the cause of individual differences rather than the consequence |
title_fullStr |
Diet preferences as the cause of individual differences rather than the consequence |
title_full_unstemmed |
Diet preferences as the cause of individual differences rather than the consequence |
title_sort |
diet preferences as the cause of individual differences rather than the consequence |
publishDate |
2016 |
url |
https://hdl.handle.net/11370/c96694c8-9ceb-4ca8-9b75-503f24266f67 https://research.rug.nl/en/publications/c96694c8-9ceb-4ca8-9b75-503f24266f67 https://doi.org/10.1111/1365-2656.12549 https://pure.rug.nl/ws/files/61668121/Oudman_et_al_2016_Journal_of_Animal_Ecology.pdf |
genre |
Calidris canutus |
genre_facet |
Calidris canutus |
op_source |
Oudman , T , Bijleveld , A I , Kavelaars , M M , Dekinga , A , Cluderay , J , Piersma , T & van Gils , J A 2016 , ' Diet preferences as the cause of individual differences rather than the consequence ' , Journal of Animal Ecology , vol. 85 , no. 5 , pp. 1378–1388 . https://doi.org/10.1111/1365-2656.12549 |
op_relation |
https://research.rug.nl/en/publications/c96694c8-9ceb-4ca8-9b75-503f24266f67 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/1365-2656.12549 |
container_title |
Journal of Animal Ecology |
container_volume |
85 |
container_issue |
5 |
container_start_page |
1378 |
op_container_end_page |
1388 |
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1810437958815186944 |