Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters
The sex ratio of the American eel in Newfoundland was estimated from studies of 354 examples from two brackish water and three freshwater habitats in Newfoundland. Sections of each gonad were cut at 10 μ, stained with haematoxylin, and counterstained with eosin. The material was divided into four cl...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1970
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Online Access: | http://dx.doi.org/10.1139/z70-082 http://www.nrcresearchpress.com/doi/pdf/10.1139/z70-082 |
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crcansciencepubl:10.1139/z70-082 2024-03-03T08:46:39+00:00 Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters Gray, R. W. Andrews, C. W. 1970 http://dx.doi.org/10.1139/z70-082 http://www.nrcresearchpress.com/doi/pdf/10.1139/z70-082 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 48, issue 3, page 483-487 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1970 crcansciencepubl https://doi.org/10.1139/z70-082 2024-02-07T10:53:37Z The sex ratio of the American eel in Newfoundland was estimated from studies of 354 examples from two brackish water and three freshwater habitats in Newfoundland. Sections of each gonad were cut at 10 μ, stained with haematoxylin, and counterstained with eosin. The material was divided into four classes; namely, females, immature females, males, and undifferentiated eels. Females were found in both brackish water and freshwater areas, while only one male was present in the material.The state of maturity of silver eels leaving Topsail Pond in the fall was determined from ova diameters. Ova diameters ranged from 0.109 to 0.214 mm; the average was 0.165 mm. These results agree closely with those reported by Svärdson for migrating silver eels in Europe. Article in Journal/Newspaper Newfoundland Canadian Science Publishing Canadian Journal of Zoology 48 3 483 487 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
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 Gray, R. W. Andrews, C. W. Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The sex ratio of the American eel in Newfoundland was estimated from studies of 354 examples from two brackish water and three freshwater habitats in Newfoundland. Sections of each gonad were cut at 10 μ, stained with haematoxylin, and counterstained with eosin. The material was divided into four classes; namely, females, immature females, males, and undifferentiated eels. Females were found in both brackish water and freshwater areas, while only one male was present in the material.The state of maturity of silver eels leaving Topsail Pond in the fall was determined from ova diameters. Ova diameters ranged from 0.109 to 0.214 mm; the average was 0.165 mm. These results agree closely with those reported by Svärdson for migrating silver eels in Europe. |
format |
Article in Journal/Newspaper |
author |
Gray, R. W. Andrews, C. W. |
author_facet |
Gray, R. W. Andrews, C. W. |
author_sort |
Gray, R. W. |
title |
Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters |
title_short |
Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters |
title_full |
Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters |
title_fullStr |
Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters |
title_full_unstemmed |
Sex ratio of the American eel ( Anguilla rostrata (LeSueur)) in Newfoundland waters |
title_sort |
sex ratio of the american eel ( anguilla rostrata (lesueur)) in newfoundland waters |
publisher |
Canadian Science Publishing |
publishDate |
1970 |
url |
http://dx.doi.org/10.1139/z70-082 http://www.nrcresearchpress.com/doi/pdf/10.1139/z70-082 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Zoology volume 48, issue 3, page 483-487 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z70-082 |
container_title |
Canadian Journal of Zoology |
container_volume |
48 |
container_issue |
3 |
container_start_page |
483 |
op_container_end_page |
487 |
_version_ |
1792502698903339008 |