Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48
ABSTRACT. Arctic cod (Boreogadus saida) were captured from Resolute Bay, Northwest Territories, shipped to Vancouver and reared in holding tanks for up to three years. Spawning and development of larvae were monitored in two separate years. Fish that were in the laboratory for less than one year spa...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.508.5605 2023-05-15T14:19:33+02:00 Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48 Mark Graham Haakon Hop The Pennsylvania State University CiteSeerX Archives 1995 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.508.5605 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-130.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.508.5605 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-130.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-130.pdf text 1995 ftciteseerx 2021-02-07T01:19:00Z ABSTRACT. Arctic cod (Boreogadus saida) were captured from Resolute Bay, Northwest Territories, shipped to Vancouver and reared in holding tanks for up to three years. Spawning and development of larvae were monitored in two separate years. Fish that were in the laboratory for less than one year spawned during the normal spawning period for wild fish, January to February. The timing of spawning was altered by water temperature and light regime. Elevated water temperature caused spawning to occur earlier, and increased mortality and rate of deformity in larvae. The absence of “light ” and “dark ” seasons may have caused spawning to deviate from the predicted time in successive years. Larvae hatched at 87–91˚C·days. The newly hatched planktonic larvae were 5–6 mm long (total length), non-pigmented, and had poor swimming ability, likely because of the large yolk sac (1.5 mm in length). Even though swimming ability remained poor for the entire rearing time (up to 100 days), it improved as the yolk dissipated. Yolk nutrition lasted 20 to 40 days after hatching. Healthy larvae remained within the top 15 cm of the water column, and fed on brine shrimp and barnacle nauplii, and oyster trochophores. Growth rate under laboratory conditions was similar to those for fish sampled from the field. Fish that were not near the surface did not grow. Key words: Arctic cod, larvae, spawning, temperature, behaviour, growth RÉSUMÉ. On a capturé des morues polaires (Boreogadus saida) dans la baie Resolute (Territoires du Nord-Ouest), pour les expédier à Vancouver et les garder dans des bassins d’élevage pendant une durée allant jusqu’à trois ans. On a surveillé la fraie et le développement des larves au cours de deux années distinctes. Les poissons qui étaient dans le laboratoire depuis moins d’un Text Arctic Arctic cod Arctic Boreogadus saida Northwest Territories Resolute Bay Territoires du Nord-Ouest Unknown Arctic Northwest Territories Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
ABSTRACT. Arctic cod (Boreogadus saida) were captured from Resolute Bay, Northwest Territories, shipped to Vancouver and reared in holding tanks for up to three years. Spawning and development of larvae were monitored in two separate years. Fish that were in the laboratory for less than one year spawned during the normal spawning period for wild fish, January to February. The timing of spawning was altered by water temperature and light regime. Elevated water temperature caused spawning to occur earlier, and increased mortality and rate of deformity in larvae. The absence of “light ” and “dark ” seasons may have caused spawning to deviate from the predicted time in successive years. Larvae hatched at 87–91˚C·days. The newly hatched planktonic larvae were 5–6 mm long (total length), non-pigmented, and had poor swimming ability, likely because of the large yolk sac (1.5 mm in length). Even though swimming ability remained poor for the entire rearing time (up to 100 days), it improved as the yolk dissipated. Yolk nutrition lasted 20 to 40 days after hatching. Healthy larvae remained within the top 15 cm of the water column, and fed on brine shrimp and barnacle nauplii, and oyster trochophores. Growth rate under laboratory conditions was similar to those for fish sampled from the field. Fish that were not near the surface did not grow. Key words: Arctic cod, larvae, spawning, temperature, behaviour, growth RÉSUMÉ. On a capturé des morues polaires (Boreogadus saida) dans la baie Resolute (Territoires du Nord-Ouest), pour les expédier à Vancouver et les garder dans des bassins d’élevage pendant une durée allant jusqu’à trois ans. On a surveillé la fraie et le développement des larves au cours de deux années distinctes. Les poissons qui étaient dans le laboratoire depuis moins d’un |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Mark Graham Haakon Hop |
spellingShingle |
Mark Graham Haakon Hop Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48 |
author_facet |
Mark Graham Haakon Hop |
author_sort |
Mark Graham |
title |
Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48 |
title_short |
Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48 |
title_full |
Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48 |
title_fullStr |
Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48 |
title_full_unstemmed |
Aspects of reproduction and larval biology of Arctic cod (Boreogadus saida). Arctic 48 |
title_sort |
aspects of reproduction and larval biology of arctic cod (boreogadus saida). arctic 48 |
publishDate |
1995 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.508.5605 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-130.pdf |
long_lat |
ENVELOPE(-94.842,-94.842,74.677,74.677) |
geographic |
Arctic Northwest Territories Resolute Bay |
geographic_facet |
Arctic Northwest Territories Resolute Bay |
genre |
Arctic Arctic cod Arctic Boreogadus saida Northwest Territories Resolute Bay Territoires du Nord-Ouest |
genre_facet |
Arctic Arctic cod Arctic Boreogadus saida Northwest Territories Resolute Bay Territoires du Nord-Ouest |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-130.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.508.5605 http://pubs.aina.ucalgary.ca/arctic/Arctic48-2-130.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766291361888206848 |