Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus
At least four races of charr occur in Windermere, the largest natural lake in England: north basin and south basin autumn spawners, north basin and south basin spring spawners. This study examines racial differences between eggs and juveniles, and relates juvenile size and survival to egg size. Ther...
Published in: | Journal of Fish Biology |
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Language: | English |
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1994
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1994.tb01323.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1994.tb01323.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1994.tb01323.x |
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crwiley:10.1111/j.1095-8649.1994.tb01323.x 2024-06-02T08:14:01+00:00 Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus Baroudy, E. Elliott, J. M. 1994 http://dx.doi.org/10.1111/j.1095-8649.1994.tb01323.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1994.tb01323.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1994.tb01323.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 45, issue 3, page 407-415 ISSN 0022-1112 1095-8649 journal-article 1994 crwiley https://doi.org/10.1111/j.1095-8649.1994.tb01323.x 2024-05-03T11:32:23Z At least four races of charr occur in Windermere, the largest natural lake in England: north basin and south basin autumn spawners, north basin and south basin spring spawners. This study examines racial differences between eggs and juveniles, and relates juvenile size and survival to egg size. There were no major differences between races for egg incubation times and the percentage of eggs hatching successfully, the latter being high (mean values 76–96%) with a negligible proportion of abnormal alevins (<0.8%). Although there were no significant differences in the lengths of the female parents, both eggs and alevins were significantly larger for the autumn spawners than the spring spawners. Size differences in alevins, especially live weight, were positively related to egg size but not female parent size. Mean percentage survival for juveniles attaining the independent feeding stage was higher for the progeny of autumn spawners (32%) than spring spawners (3%). Racial differences in the egg and alevin stages therefore appear to have a significant effect on subsequent survival, and could be ultimately responsible for the relatively small proportion of spring spawners (only 4–6%) in the Windermere population of charr. Article in Journal/Newspaper Salvelinus alpinus Wiley Online Library Journal of Fish Biology 45 3 407 415 |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
At least four races of charr occur in Windermere, the largest natural lake in England: north basin and south basin autumn spawners, north basin and south basin spring spawners. This study examines racial differences between eggs and juveniles, and relates juvenile size and survival to egg size. There were no major differences between races for egg incubation times and the percentage of eggs hatching successfully, the latter being high (mean values 76–96%) with a negligible proportion of abnormal alevins (<0.8%). Although there were no significant differences in the lengths of the female parents, both eggs and alevins were significantly larger for the autumn spawners than the spring spawners. Size differences in alevins, especially live weight, were positively related to egg size but not female parent size. Mean percentage survival for juveniles attaining the independent feeding stage was higher for the progeny of autumn spawners (32%) than spring spawners (3%). Racial differences in the egg and alevin stages therefore appear to have a significant effect on subsequent survival, and could be ultimately responsible for the relatively small proportion of spring spawners (only 4–6%) in the Windermere population of charr. |
format |
Article in Journal/Newspaper |
author |
Baroudy, E. Elliott, J. M. |
spellingShingle |
Baroudy, E. Elliott, J. M. Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus |
author_facet |
Baroudy, E. Elliott, J. M. |
author_sort |
Baroudy, E. |
title |
Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus |
title_short |
Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus |
title_full |
Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus |
title_fullStr |
Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus |
title_full_unstemmed |
Racial differences in eggs and juveniles of Windermere charr, Salvelinus alpinus |
title_sort |
racial differences in eggs and juveniles of windermere charr, salvelinus alpinus |
publisher |
Wiley |
publishDate |
1994 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1994.tb01323.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1994.tb01323.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1994.tb01323.x |
genre |
Salvelinus alpinus |
genre_facet |
Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 45, issue 3, page 407-415 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1994.tb01323.x |
container_title |
Journal of Fish Biology |
container_volume |
45 |
container_issue |
3 |
container_start_page |
407 |
op_container_end_page |
415 |
_version_ |
1800737706320330752 |