Maternal aggression in northern elephant seals: the effect of the pup
Female northern elephant seals (Mirounga angustirostris) were observed for three breeding seasons on Southeast Farallon Island to determine the effect of the pup on maternal aggression. For females that lost their pups before weaning them, the mean percentage of aggressive encounters started and won...
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Language: | English |
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Canadian Science Publishing
1988
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Online Access: | http://dx.doi.org/10.1139/z88-244 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-244 |
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crcansciencepubl:10.1139/z88-244 2023-12-17T10:29:40+01:00 Maternal aggression in northern elephant seals: the effect of the pup Ribic, Christine A. 1988 http://dx.doi.org/10.1139/z88-244 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-244 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 66, issue 7, page 1693-1698 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1988 crcansciencepubl https://doi.org/10.1139/z88-244 2023-11-19T13:38:23Z Female northern elephant seals (Mirounga angustirostris) were observed for three breeding seasons on Southeast Farallon Island to determine the effect of the pup on maternal aggression. For females that lost their pups before weaning them, the mean percentage of aggressive encounters started and won decreased after the death of the pup. A higher percentage of females moved away at the end of an aggressive encounter from females that ultimately weaned their pups than from females that ultimately lost their pups. There was, however, no difference between the two categories in mean percentage of aggressive encounters started and won. Among females that weaned pups in all three seasons, individuals did not win more encounters but differed in percentage of females that moved away and in mean percentage of aggressive encounters started as they aged. A number of variables were associated with an increased probability that a female would successfully wean her pup: early arrival date, having a high percentage of females that moved away, and a high mean percentage of aggressive encounters won. Raising a pup in an area of high female density or where animals had access to the beach were associated with a decreased probability of weaning a pup. Article in Journal/Newspaper Elephant Seals Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 66 7 1693 1698 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Ribic, Christine A. Maternal aggression in northern elephant seals: the effect of the pup |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Female northern elephant seals (Mirounga angustirostris) were observed for three breeding seasons on Southeast Farallon Island to determine the effect of the pup on maternal aggression. For females that lost their pups before weaning them, the mean percentage of aggressive encounters started and won decreased after the death of the pup. A higher percentage of females moved away at the end of an aggressive encounter from females that ultimately weaned their pups than from females that ultimately lost their pups. There was, however, no difference between the two categories in mean percentage of aggressive encounters started and won. Among females that weaned pups in all three seasons, individuals did not win more encounters but differed in percentage of females that moved away and in mean percentage of aggressive encounters started as they aged. A number of variables were associated with an increased probability that a female would successfully wean her pup: early arrival date, having a high percentage of females that moved away, and a high mean percentage of aggressive encounters won. Raising a pup in an area of high female density or where animals had access to the beach were associated with a decreased probability of weaning a pup. |
format |
Article in Journal/Newspaper |
author |
Ribic, Christine A. |
author_facet |
Ribic, Christine A. |
author_sort |
Ribic, Christine A. |
title |
Maternal aggression in northern elephant seals: the effect of the pup |
title_short |
Maternal aggression in northern elephant seals: the effect of the pup |
title_full |
Maternal aggression in northern elephant seals: the effect of the pup |
title_fullStr |
Maternal aggression in northern elephant seals: the effect of the pup |
title_full_unstemmed |
Maternal aggression in northern elephant seals: the effect of the pup |
title_sort |
maternal aggression in northern elephant seals: the effect of the pup |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/z88-244 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-244 |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_source |
Canadian Journal of Zoology volume 66, issue 7, page 1693-1698 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z88-244 |
container_title |
Canadian Journal of Zoology |
container_volume |
66 |
container_issue |
7 |
container_start_page |
1693 |
op_container_end_page |
1698 |
_version_ |
1785582124176244736 |