THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS)
Series of eggs collected at various Canadian Atlantic Coast Hatcheries from 1934 to 1940 were used as the bases for a survey of the embryology of the Atlantic salmon (Salmo salar L.) from fertilization to hatching. Early developmental stages from cleavage to the delineation of the embryonic shield a...
Published in: | Canadian Journal of Research |
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Canadian Science Publishing
1944
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Online Access: | http://dx.doi.org/10.1139/cjr44d-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjr44d-008 |
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crcansciencepubl:10.1139/cjr44d-008 2024-06-23T07:51:17+00:00 THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS) Battle, Helen I. 1944 http://dx.doi.org/10.1139/cjr44d-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjr44d-008 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Research volume 22d, issue 5, page 105-125 ISSN 1923-4287 journal-article 1944 crcansciencepubl https://doi.org/10.1139/cjr44d-008 2024-06-06T04:11:16Z Series of eggs collected at various Canadian Atlantic Coast Hatcheries from 1934 to 1940 were used as the bases for a survey of the embryology of the Atlantic salmon (Salmo salar L.) from fertilization to hatching. Early developmental stages from cleavage to the delineation of the embryonic shield are described. Somite formation commences when the embryonic axis is between 1 and 2 mm. in length, and is complete shortly after closure of the blastopore when 60 somites are evident at an embryonic length of 6 mm. Following this the embryo takes on a progressively more fish-like form until hatching.The temperature of the water during most of the incubation period is relatively constant (0.5 °C. to 1 °C.) and the embryonic length data when plotted over this period fit the requirements for straight-line curves. The variation in the thermal units required to reach the same stage in different series indicates that their validity as criteria for determining comparable stages in embryonic development is doubtful.Periods of greatest mortality in development occur during cleavage and blastoderm formation to the closure of the blastopore and at hatching. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Research 22d 5 105 125 |
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Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Series of eggs collected at various Canadian Atlantic Coast Hatcheries from 1934 to 1940 were used as the bases for a survey of the embryology of the Atlantic salmon (Salmo salar L.) from fertilization to hatching. Early developmental stages from cleavage to the delineation of the embryonic shield are described. Somite formation commences when the embryonic axis is between 1 and 2 mm. in length, and is complete shortly after closure of the blastopore when 60 somites are evident at an embryonic length of 6 mm. Following this the embryo takes on a progressively more fish-like form until hatching.The temperature of the water during most of the incubation period is relatively constant (0.5 °C. to 1 °C.) and the embryonic length data when plotted over this period fit the requirements for straight-line curves. The variation in the thermal units required to reach the same stage in different series indicates that their validity as criteria for determining comparable stages in embryonic development is doubtful.Periods of greatest mortality in development occur during cleavage and blastoderm formation to the closure of the blastopore and at hatching. |
format |
Article in Journal/Newspaper |
author |
Battle, Helen I. |
spellingShingle |
Battle, Helen I. THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS) |
author_facet |
Battle, Helen I. |
author_sort |
Battle, Helen I. |
title |
THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS) |
title_short |
THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS) |
title_full |
THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS) |
title_fullStr |
THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS) |
title_full_unstemmed |
THE EMBRYOLOGY OF THE ATLANTIC SALMON (SALMO SALAR LINNAEUS) |
title_sort |
embryology of the atlantic salmon (salmo salar linnaeus) |
publisher |
Canadian Science Publishing |
publishDate |
1944 |
url |
http://dx.doi.org/10.1139/cjr44d-008 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjr44d-008 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Research volume 22d, issue 5, page 105-125 ISSN 1923-4287 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjr44d-008 |
container_title |
Canadian Journal of Research |
container_volume |
22d |
container_issue |
5 |
container_start_page |
105 |
op_container_end_page |
125 |
_version_ |
1802642329090129920 |