Data from: Brood size matching: a novel perspective on predator dilution
A primary benefit of grouping is diluting the individual risk of attack by predators. However, the fact that groups are formed not always by solitary adults but also by subgroups (e.g., families) has been overlooked. The subgroup-specific benefit of predator dilution depends on its relative contribu...
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Online Access: | https://doi.org/10.5061/dryad.mn11k |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::a82cb0cfc76d7a69f594ffed13d2b4fb 2023-05-15T18:20:25+02:00 Data from: Brood size matching: a novel perspective on predator dilution Jaatinen, Kim Öst, Markus 2021-07-05 https://doi.org/10.5061/dryad.mn11k en eng Dryad http://dx.doi.org/10.5061/dryad.mn11k https://dx.doi.org/10.5061/dryad.mn11k lic_creative-commons 10.5061/dryad.mn11k oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:82521 oai:easy.dans.knaw.nl:easy-dataset:82521 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 re3data_____::r3d100000044 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Behavior: antipredator Somateria mollissima Behavior: social Behavior: reproductive Ecology: behavioral Interactions: predation Life sciences medicine and health care Game theory Baltic Sea psy envir Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2021 fttriple https://doi.org/10.5061/dryad.mn11k 2023-01-22T16:53:07Z A primary benefit of grouping is diluting the individual risk of attack by predators. However, the fact that groups are formed not always by solitary adults but also by subgroups (e.g., families) has been overlooked. The subgroup-specific benefit of predator dilution depends on its relative contribution to total group size. Therefore, the willingness of a subgroup to merge with others should increase the less it contributes to total group size, but the conflicting preferences of partners may result in the preferential merger of similar-sized subgroups. Here, we evaluate how the proportional contribution of subgroups to diluting risk affects group formation. We generate predictions using a bidding game over parental care and test them using data on common eiders (Somateria mollissima), in which females with variable-sized broods may form brood-rearing coalitions. The predictions (1) that size-matched subgroups should have a higher propensity to merge, (2) that predation should increase group formation propensity, and (3) that increased bargaining power, as proxied by female body condition, should increase the time needed to establish partnerships were all supported. Partners do negotiate over their relative contributions to predator dilution, accepting or rejecting partnerships on the basis of this criterion. Our results show that consideration of the size of subgroups before merger is critical in understanding the process of group formation under the threat of predation. EiderField data on eider group formation behaviour. Dataset Somateria mollissima Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Behavior: antipredator Somateria mollissima Behavior: social Behavior: reproductive Ecology: behavioral Interactions: predation Life sciences medicine and health care Game theory Baltic Sea psy envir |
spellingShingle |
Behavior: antipredator Somateria mollissima Behavior: social Behavior: reproductive Ecology: behavioral Interactions: predation Life sciences medicine and health care Game theory Baltic Sea psy envir Jaatinen, Kim Öst, Markus Data from: Brood size matching: a novel perspective on predator dilution |
topic_facet |
Behavior: antipredator Somateria mollissima Behavior: social Behavior: reproductive Ecology: behavioral Interactions: predation Life sciences medicine and health care Game theory Baltic Sea psy envir |
description |
A primary benefit of grouping is diluting the individual risk of attack by predators. However, the fact that groups are formed not always by solitary adults but also by subgroups (e.g., families) has been overlooked. The subgroup-specific benefit of predator dilution depends on its relative contribution to total group size. Therefore, the willingness of a subgroup to merge with others should increase the less it contributes to total group size, but the conflicting preferences of partners may result in the preferential merger of similar-sized subgroups. Here, we evaluate how the proportional contribution of subgroups to diluting risk affects group formation. We generate predictions using a bidding game over parental care and test them using data on common eiders (Somateria mollissima), in which females with variable-sized broods may form brood-rearing coalitions. The predictions (1) that size-matched subgroups should have a higher propensity to merge, (2) that predation should increase group formation propensity, and (3) that increased bargaining power, as proxied by female body condition, should increase the time needed to establish partnerships were all supported. Partners do negotiate over their relative contributions to predator dilution, accepting or rejecting partnerships on the basis of this criterion. Our results show that consideration of the size of subgroups before merger is critical in understanding the process of group formation under the threat of predation. EiderField data on eider group formation behaviour. |
format |
Dataset |
author |
Jaatinen, Kim Öst, Markus |
author_facet |
Jaatinen, Kim Öst, Markus |
author_sort |
Jaatinen, Kim |
title |
Data from: Brood size matching: a novel perspective on predator dilution |
title_short |
Data from: Brood size matching: a novel perspective on predator dilution |
title_full |
Data from: Brood size matching: a novel perspective on predator dilution |
title_fullStr |
Data from: Brood size matching: a novel perspective on predator dilution |
title_full_unstemmed |
Data from: Brood size matching: a novel perspective on predator dilution |
title_sort |
data from: brood size matching: a novel perspective on predator dilution |
publisher |
Dryad |
publishDate |
2021 |
url |
https://doi.org/10.5061/dryad.mn11k |
genre |
Somateria mollissima |
genre_facet |
Somateria mollissima |
op_source |
10.5061/dryad.mn11k oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:82521 oai:easy.dans.knaw.nl:easy-dataset:82521 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 re3data_____::r3d100000044 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.mn11k https://dx.doi.org/10.5061/dryad.mn11k |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.mn11k |
_version_ |
1766197943151362048 |