Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae )
Using a small biopsy dart, samples of living dermal tissue were collected from individually identified humpback whales (Megaptera novaeangliae) in southeastern Alaskan waters. In vitro culture of these samples provided enough chromosomal material to karyotype 10 individuals. Examination of the sex c...
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1988
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crcansciencepubl:10.1139/z88-181 2023-12-17T10:33:19+01:00 Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae ) Lambertsen, Richard H. Baker, C. Scott Duffield, Deborah A. Chamberlin-Lea, Jan 1988 http://dx.doi.org/10.1139/z88-181 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-181 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 66, issue 6, page 1243-1248 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1988 crcansciencepubl https://doi.org/10.1139/z88-181 2023-11-19T13:39:17Z Using a small biopsy dart, samples of living dermal tissue were collected from individually identified humpback whales (Megaptera novaeangliae) in southeastern Alaskan waters. In vitro culture of these samples provided enough chromosomal material to karyotype 10 individuals. Examination of the sex chromosomes in the karyotypes demonstrated the sex of each of the 10 whales. In two cases, cytogenetic findings verified previous inferences of sex based on behavioral observations. In another two cases, karyotyping allowed the determination of sex when even long-term sighting histories and behavioral observations had been insufficient. For the rest of the whales, sex determination by cytogenetic findings has preceded long-term sightings and will facilitate the interpretation of future behavioral observations. We conclude that in vitro culturing of dermal tissue collected from naturally marked humpback whales, coupled with karyology, promises to be a powerful technique in future studies of the social behavior and population biology of this marine species. Article in Journal/Newspaper Megaptera novaeangliae Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 66 6 1243 1248 |
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Open Polar |
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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 Lambertsen, Richard H. Baker, C. Scott Duffield, Deborah A. Chamberlin-Lea, Jan Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Using a small biopsy dart, samples of living dermal tissue were collected from individually identified humpback whales (Megaptera novaeangliae) in southeastern Alaskan waters. In vitro culture of these samples provided enough chromosomal material to karyotype 10 individuals. Examination of the sex chromosomes in the karyotypes demonstrated the sex of each of the 10 whales. In two cases, cytogenetic findings verified previous inferences of sex based on behavioral observations. In another two cases, karyotyping allowed the determination of sex when even long-term sighting histories and behavioral observations had been insufficient. For the rest of the whales, sex determination by cytogenetic findings has preceded long-term sightings and will facilitate the interpretation of future behavioral observations. We conclude that in vitro culturing of dermal tissue collected from naturally marked humpback whales, coupled with karyology, promises to be a powerful technique in future studies of the social behavior and population biology of this marine species. |
format |
Article in Journal/Newspaper |
author |
Lambertsen, Richard H. Baker, C. Scott Duffield, Deborah A. Chamberlin-Lea, Jan |
author_facet |
Lambertsen, Richard H. Baker, C. Scott Duffield, Deborah A. Chamberlin-Lea, Jan |
author_sort |
Lambertsen, Richard H. |
title |
Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae ) |
title_short |
Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae ) |
title_full |
Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae ) |
title_fullStr |
Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae ) |
title_full_unstemmed |
Cytogenetic determination of sex among individually identified humpback whales ( Megaptera novaeangliae ) |
title_sort |
cytogenetic determination of sex among individually identified humpback whales ( megaptera novaeangliae ) |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/z88-181 http://www.nrcresearchpress.com/doi/pdf/10.1139/z88-181 |
genre |
Megaptera novaeangliae |
genre_facet |
Megaptera novaeangliae |
op_source |
Canadian Journal of Zoology volume 66, issue 6, page 1243-1248 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z88-181 |
container_title |
Canadian Journal of Zoology |
container_volume |
66 |
container_issue |
6 |
container_start_page |
1243 |
op_container_end_page |
1248 |
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1785587284421115904 |