Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear
Abstract Based on the sexually selected infanticide (SSI) hypothesis, infanticide can be an adaptive mating strategy for males, but this is has rarely been documented in non‐social mammals. This phenomenon should not benefit females, so one would expect females to evolve mating counter strategies in...
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crwiley:10.1111/j.1439-0310.2006.01152.x 2024-06-23T07:57:22+00:00 Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear Bellemain, Eva Swenson, Jon E. Taberlet, Pierre 2006 http://dx.doi.org/10.1111/j.1439-0310.2006.01152.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1439-0310.2006.01152.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1439-0310.2006.01152.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ethology volume 112, issue 3, page 238-246 ISSN 0179-1613 1439-0310 journal-article 2006 crwiley https://doi.org/10.1111/j.1439-0310.2006.01152.x 2024-06-04T06:42:11Z Abstract Based on the sexually selected infanticide (SSI) hypothesis, infanticide can be an adaptive mating strategy for males, but this is has rarely been documented in non‐social mammals. This phenomenon should not benefit females, so one would expect females to evolve mating counter strategies in order to protect their infants from infanticidal males. Cases of SSI are extremely difficult to document in the field, especially for non‐social species. Using field observations and genetic methods, we describe mating strategies employed by both sexes of brown bears ( Ursus arctos ) in relation to SSI. We present evidence for the first time suggesting that infanticide is an adaptive male mating strategy in this non‐social carnivore, as all requirements for SSI are fulfilled (1) infanticide shortens the time to the mother's next estrus, (2) the perpetrator is not the father of the killed infants, and (3) putative perpetrators sire the next litter. Moreover, all infanticide cases occurred during the mating season. We expected that primarily immigrant males were infanticidal, as in social species. However, we found that resident adult males commonly committed infanticide. Perhaps they recognize females they have mated with previously. Moreover, we used DNA‐based parentage testing to demonstrate a minimum of 14.5% of multiple paternities (up to 28% for litters with at least three young). Female promiscuity to confuse paternity may be an adaptive counter strategy to avoid infanticide. Article in Journal/Newspaper Ursus arctos Wiley Online Library Ethology 112 3 238 246 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Based on the sexually selected infanticide (SSI) hypothesis, infanticide can be an adaptive mating strategy for males, but this is has rarely been documented in non‐social mammals. This phenomenon should not benefit females, so one would expect females to evolve mating counter strategies in order to protect their infants from infanticidal males. Cases of SSI are extremely difficult to document in the field, especially for non‐social species. Using field observations and genetic methods, we describe mating strategies employed by both sexes of brown bears ( Ursus arctos ) in relation to SSI. We present evidence for the first time suggesting that infanticide is an adaptive male mating strategy in this non‐social carnivore, as all requirements for SSI are fulfilled (1) infanticide shortens the time to the mother's next estrus, (2) the perpetrator is not the father of the killed infants, and (3) putative perpetrators sire the next litter. Moreover, all infanticide cases occurred during the mating season. We expected that primarily immigrant males were infanticidal, as in social species. However, we found that resident adult males commonly committed infanticide. Perhaps they recognize females they have mated with previously. Moreover, we used DNA‐based parentage testing to demonstrate a minimum of 14.5% of multiple paternities (up to 28% for litters with at least three young). Female promiscuity to confuse paternity may be an adaptive counter strategy to avoid infanticide. |
format |
Article in Journal/Newspaper |
author |
Bellemain, Eva Swenson, Jon E. Taberlet, Pierre |
spellingShingle |
Bellemain, Eva Swenson, Jon E. Taberlet, Pierre Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear |
author_facet |
Bellemain, Eva Swenson, Jon E. Taberlet, Pierre |
author_sort |
Bellemain, Eva |
title |
Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear |
title_short |
Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear |
title_full |
Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear |
title_fullStr |
Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear |
title_full_unstemmed |
Mating Strategies in Relation to Sexually Selected Infanticide in a Non‐Social Carnivore: the Brown Bear |
title_sort |
mating strategies in relation to sexually selected infanticide in a non‐social carnivore: the brown bear |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1439-0310.2006.01152.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1439-0310.2006.01152.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1439-0310.2006.01152.x |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
Ethology volume 112, issue 3, page 238-246 ISSN 0179-1613 1439-0310 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1439-0310.2006.01152.x |
container_title |
Ethology |
container_volume |
112 |
container_issue |
3 |
container_start_page |
238 |
op_container_end_page |
246 |
_version_ |
1802650968595103744 |