Effects of body size and harem size on male reproductive behaviour in the southern elephant seal
In a study on size and reproductive behaviour in the southern elephant seal,Mirounga leonina, on South Georgia from 1991 to 1993, large size, measured as nose to hind flipper length, was associated with factors that confer an advantage in terms of reproductive success. Some males stayed at the centr...
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ftnerc:oai:nora.nerc.ac.uk:515209 2023-05-15T16:05:13+02:00 Effects of body size and harem size on male reproductive behaviour in the southern elephant seal Modig, A.O. 1996-06 http://nora.nerc.ac.uk/id/eprint/515209/ https://doi.org/10.1006/anbe.1996.0134 unknown Elsevier Modig, A.O. 1996 Effects of body size and harem size on male reproductive behaviour in the southern elephant seal. Animal Behaviour, 51 (6). 1295-1306. https://doi.org/10.1006/anbe.1996.0134 <https://doi.org/10.1006/anbe.1996.0134> Publication - Article PeerReviewed 1996 ftnerc https://doi.org/10.1006/anbe.1996.0134 2023-02-04T19:43:55Z In a study on size and reproductive behaviour in the southern elephant seal,Mirounga leonina, on South Georgia from 1991 to 1993, large size, measured as nose to hind flipper length, was associated with factors that confer an advantage in terms of reproductive success. Some males stayed at the centre of harems, others were on the periphery and others were outside the harem. A male's mating success increased with his length, and for central males, mating success increased with harem size. Central males defeated almost all other males. Central males were also longest and outside males shortest. Furthermore, central males stayed ashore longest. For central males, length was positively correlated with number of days spent in the harem but not with harem size. Central and peripheral males had the highest copulation frequencies (per h and per male). The copulation frequency of central males apparently peaked in harems with a maximum size of 100–150 females, with lower frequencies in larger and smaller harems. However, the mating success of central males over the season increased with harem size. The rate of alert behaviour and time devoted to resting were not correlated with harem size for any of the three male categories, but rate of agonistic behaviour increased with increasing harem size for central males. Article in Journal/Newspaper Elephant Seal Mirounga leonina Southern Elephant Seal Natural Environment Research Council: NERC Open Research Archive Animal Behaviour 51 6 1295 1306 |
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Natural Environment Research Council: NERC Open Research Archive |
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In a study on size and reproductive behaviour in the southern elephant seal,Mirounga leonina, on South Georgia from 1991 to 1993, large size, measured as nose to hind flipper length, was associated with factors that confer an advantage in terms of reproductive success. Some males stayed at the centre of harems, others were on the periphery and others were outside the harem. A male's mating success increased with his length, and for central males, mating success increased with harem size. Central males defeated almost all other males. Central males were also longest and outside males shortest. Furthermore, central males stayed ashore longest. For central males, length was positively correlated with number of days spent in the harem but not with harem size. Central and peripheral males had the highest copulation frequencies (per h and per male). The copulation frequency of central males apparently peaked in harems with a maximum size of 100–150 females, with lower frequencies in larger and smaller harems. However, the mating success of central males over the season increased with harem size. The rate of alert behaviour and time devoted to resting were not correlated with harem size for any of the three male categories, but rate of agonistic behaviour increased with increasing harem size for central males. |
format |
Article in Journal/Newspaper |
author |
Modig, A.O. |
spellingShingle |
Modig, A.O. Effects of body size and harem size on male reproductive behaviour in the southern elephant seal |
author_facet |
Modig, A.O. |
author_sort |
Modig, A.O. |
title |
Effects of body size and harem size on male reproductive behaviour in the southern elephant seal |
title_short |
Effects of body size and harem size on male reproductive behaviour in the southern elephant seal |
title_full |
Effects of body size and harem size on male reproductive behaviour in the southern elephant seal |
title_fullStr |
Effects of body size and harem size on male reproductive behaviour in the southern elephant seal |
title_full_unstemmed |
Effects of body size and harem size on male reproductive behaviour in the southern elephant seal |
title_sort |
effects of body size and harem size on male reproductive behaviour in the southern elephant seal |
publisher |
Elsevier |
publishDate |
1996 |
url |
http://nora.nerc.ac.uk/id/eprint/515209/ https://doi.org/10.1006/anbe.1996.0134 |
genre |
Elephant Seal Mirounga leonina Southern Elephant Seal |
genre_facet |
Elephant Seal Mirounga leonina Southern Elephant Seal |
op_relation |
Modig, A.O. 1996 Effects of body size and harem size on male reproductive behaviour in the southern elephant seal. Animal Behaviour, 51 (6). 1295-1306. https://doi.org/10.1006/anbe.1996.0134 <https://doi.org/10.1006/anbe.1996.0134> |
op_doi |
https://doi.org/10.1006/anbe.1996.0134 |
container_title |
Animal Behaviour |
container_volume |
51 |
container_issue |
6 |
container_start_page |
1295 |
op_container_end_page |
1306 |
_version_ |
1766401118950129664 |