Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks
Predators may select more often to attack the more vulnerable prey or those with an inferior health status. Thus, prey should be able to assess their own vulnerability to predation and modify their antipredatory behavior accordingly. When approached by predator skuas, unguarded penguin chicks flee s...
Published in: | Behavioral Ecology and Sociobiology |
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ftunivgent:oai:archive.ugent.be:1233198 2023-10-01T03:51:01+02:00 Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks Martín, J De Neve, Liesbeth Polo, V Fargallo, JA Soler, Manuel 2006 application/pdf https://biblio.ugent.be/publication/1233198 http://hdl.handle.net/1854/LU-1233198 https://doi.org/10.1007/s00265-006-0221-1 https://biblio.ugent.be/publication/1233198/file/1899357 eng eng https://biblio.ugent.be/publication/1233198 http://hdl.handle.net/1854/LU-1233198 http://dx.doi.org/10.1007/s00265-006-0221-1 https://biblio.ugent.be/publication/1233198/file/1899357 No license (in copyright) info:eu-repo/semantics/restrictedAccess BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY ISSN: 0340-5443 Biology and Life Sciences PYGOSCELIS-ANTARCTICA CRECHING BEHAVIOR antipredatory behavior fear immunocompetence health condition penguins RISK-ASSESSMENT HUMAN DISTURBANCE KING PENGUIN DEFENSE DISTANCE DECISIONS prey vulnerability BIRDS journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2006 ftunivgent https://doi.org/10.1007/s00265-006-0221-1 2023-09-06T22:25:51Z Predators may select more often to attack the more vulnerable prey or those with an inferior health status. Thus, prey should be able to assess their own vulnerability to predation and modify their antipredatory behavior accordingly. When approached by predator skuas, unguarded penguin chicks flee short distances, and usually aggregate in dense packs, but there is a clear interindividual variability in their responses under similar conditions. We hypothesized that this variability in escape responses might be related to the perceived vulnerability to predation of each individual chick. We simulated predator attacks to chinstrap penguin chicks and analyzed the sources of variation in their escape response, such as the presence of adults or the density of other chicks, and the sex, age, body condition, and health status of responding chicks. Chicks allowed shorter approach distances when they had a better health condition (i.e., a greater T-cell-mediated immunity, CMI), when they were younger, and when the density of adults around was higher. Sex and density of other chicks were not important. Similarly, chicks fled from the experimenter to longer distances when they had a lower CMI and when the density of adults was lower. Therefore, escape characteristics of chicks depended on the presence of adults that can deter predators and on the health-dependent vulnerability of chicks. Article in Journal/Newspaper Antarc* Antarctica Chinstrap penguin Pygoscelis antarctica Ghent University Academic Bibliography Behavioral Ecology and Sociobiology 60 6 778 784 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Biology and Life Sciences PYGOSCELIS-ANTARCTICA CRECHING BEHAVIOR antipredatory behavior fear immunocompetence health condition penguins RISK-ASSESSMENT HUMAN DISTURBANCE KING PENGUIN DEFENSE DISTANCE DECISIONS prey vulnerability BIRDS |
spellingShingle |
Biology and Life Sciences PYGOSCELIS-ANTARCTICA CRECHING BEHAVIOR antipredatory behavior fear immunocompetence health condition penguins RISK-ASSESSMENT HUMAN DISTURBANCE KING PENGUIN DEFENSE DISTANCE DECISIONS prey vulnerability BIRDS Martín, J De Neve, Liesbeth Polo, V Fargallo, JA Soler, Manuel Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks |
topic_facet |
Biology and Life Sciences PYGOSCELIS-ANTARCTICA CRECHING BEHAVIOR antipredatory behavior fear immunocompetence health condition penguins RISK-ASSESSMENT HUMAN DISTURBANCE KING PENGUIN DEFENSE DISTANCE DECISIONS prey vulnerability BIRDS |
description |
Predators may select more often to attack the more vulnerable prey or those with an inferior health status. Thus, prey should be able to assess their own vulnerability to predation and modify their antipredatory behavior accordingly. When approached by predator skuas, unguarded penguin chicks flee short distances, and usually aggregate in dense packs, but there is a clear interindividual variability in their responses under similar conditions. We hypothesized that this variability in escape responses might be related to the perceived vulnerability to predation of each individual chick. We simulated predator attacks to chinstrap penguin chicks and analyzed the sources of variation in their escape response, such as the presence of adults or the density of other chicks, and the sex, age, body condition, and health status of responding chicks. Chicks allowed shorter approach distances when they had a better health condition (i.e., a greater T-cell-mediated immunity, CMI), when they were younger, and when the density of adults around was higher. Sex and density of other chicks were not important. Similarly, chicks fled from the experimenter to longer distances when they had a lower CMI and when the density of adults was lower. Therefore, escape characteristics of chicks depended on the presence of adults that can deter predators and on the health-dependent vulnerability of chicks. |
format |
Article in Journal/Newspaper |
author |
Martín, J De Neve, Liesbeth Polo, V Fargallo, JA Soler, Manuel |
author_facet |
Martín, J De Neve, Liesbeth Polo, V Fargallo, JA Soler, Manuel |
author_sort |
Martín, J |
title |
Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks |
title_short |
Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks |
title_full |
Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks |
title_fullStr |
Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks |
title_full_unstemmed |
Health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks |
title_sort |
health-dependent vulnerability to predation affects escape responses of unguarded chinstrap penguin chicks |
publishDate |
2006 |
url |
https://biblio.ugent.be/publication/1233198 http://hdl.handle.net/1854/LU-1233198 https://doi.org/10.1007/s00265-006-0221-1 https://biblio.ugent.be/publication/1233198/file/1899357 |
genre |
Antarc* Antarctica Chinstrap penguin Pygoscelis antarctica |
genre_facet |
Antarc* Antarctica Chinstrap penguin Pygoscelis antarctica |
op_source |
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY ISSN: 0340-5443 |
op_relation |
https://biblio.ugent.be/publication/1233198 http://hdl.handle.net/1854/LU-1233198 http://dx.doi.org/10.1007/s00265-006-0221-1 https://biblio.ugent.be/publication/1233198/file/1899357 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00265-006-0221-1 |
container_title |
Behavioral Ecology and Sociobiology |
container_volume |
60 |
container_issue |
6 |
container_start_page |
778 |
op_container_end_page |
784 |
_version_ |
1778530570175774720 |