Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae )
By comparing photographs of humpback whales (Megaptera novaeangliae) photographed at the peak of their arch during a dive, we found some to be smooth and others to be scalloped middorsally caudal to the dorsal fin. Out of 410 photographs taken in southeast Alaska and Hawaii, 66% were found to be smo...
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1980
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Online Access: | http://dx.doi.org/10.1139/f80-284 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-284 |
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crcansciencepubl:10.1139/f80-284 2023-12-17T10:33:19+01:00 Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae ) Jurasz, V. P. McSweeney, D. Jurasz, C. M. 1980 http://dx.doi.org/10.1139/f80-284 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-284 fr fre Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 37, issue 12, page 2362-2364 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1980 crcansciencepubl https://doi.org/10.1139/f80-284 2023-11-19T13:39:30Z By comparing photographs of humpback whales (Megaptera novaeangliae) photographed at the peak of their arch during a dive, we found some to be smooth and others to be scalloped middorsally caudal to the dorsal fin. Out of 410 photographs taken in southeast Alaska and Hawaii, 66% were found to be smooth and 34% scalloped. All females with calves were smooth. One pregnant female was smooth and only one female who was pregnant was slightly scalloped. One known male was scalloped and one "singer" on the Hawaiian breeding grounds was scalloped. We suggest that the smoothness or scalloping of this region is a morphological feature and can be used with reasonable accuracy to determine sex in humpback whales.Key words: humpback whales, morphology, sex Article in Journal/Newspaper Megaptera novaeangliae Alaska Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 37 12 2362 2364 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
French |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Jurasz, V. P. McSweeney, D. Jurasz, C. M. Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae ) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
By comparing photographs of humpback whales (Megaptera novaeangliae) photographed at the peak of their arch during a dive, we found some to be smooth and others to be scalloped middorsally caudal to the dorsal fin. Out of 410 photographs taken in southeast Alaska and Hawaii, 66% were found to be smooth and 34% scalloped. All females with calves were smooth. One pregnant female was smooth and only one female who was pregnant was slightly scalloped. One known male was scalloped and one "singer" on the Hawaiian breeding grounds was scalloped. We suggest that the smoothness or scalloping of this region is a morphological feature and can be used with reasonable accuracy to determine sex in humpback whales.Key words: humpback whales, morphology, sex |
format |
Article in Journal/Newspaper |
author |
Jurasz, V. P. McSweeney, D. Jurasz, C. M. |
author_facet |
Jurasz, V. P. McSweeney, D. Jurasz, C. M. |
author_sort |
Jurasz, V. P. |
title |
Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae ) |
title_short |
Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae ) |
title_full |
Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae ) |
title_fullStr |
Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae ) |
title_full_unstemmed |
Possible Sexing Technique for Humpback Whales ( Megaptera novaeangliae ) |
title_sort |
possible sexing technique for humpback whales ( megaptera novaeangliae ) |
publisher |
Canadian Science Publishing |
publishDate |
1980 |
url |
http://dx.doi.org/10.1139/f80-284 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-284 |
genre |
Megaptera novaeangliae Alaska |
genre_facet |
Megaptera novaeangliae Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 37, issue 12, page 2362-2364 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f80-284 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
37 |
container_issue |
12 |
container_start_page |
2362 |
op_container_end_page |
2364 |
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1785587281535434752 |