Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada
Reproductive potential of Atlantic salmon (Salmo salar), defined as average eggs per fish in the spawning run, varied three-fold both within stocks over time and among stocks from different geographic areas. Eggs per spawner is a function of fecundity, sea-age, proportion of females, and female size...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1989
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Online Access: | http://dx.doi.org/10.1139/f89-272 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-272 |
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crcansciencepubl:10.1139/f89-272 2023-12-17T10:27:20+01:00 Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada Randall, R. G. 1989 http://dx.doi.org/10.1139/f89-272 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-272 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 12, page 2210-2218 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1989 crcansciencepubl https://doi.org/10.1139/f89-272 2023-11-19T13:38:29Z Reproductive potential of Atlantic salmon (Salmo salar), defined as average eggs per fish in the spawning run, varied three-fold both within stocks over time and among stocks from different geographic areas. Eggs per spawner is a function of fecundity, sea-age, proportion of females, and female size; the latter three traits varied significantly among years for salmon in both the Miramichi and Restigouche Rivers, New Brunswick. Because all of the above traits are related to sea-age at maturity, eggs per spawner was significantly correlated with mean sea-age in both rivers (R 2 = 0.88 and 0.61, respectively). Among 10 different populations in eastern Canada, reproductive potential was also correlated with sea-age; for mean sea-ages (MSA) ranging from 1.0 to 1.8 yr, reproductive potential (RP) was defined by the power regression: RP = 1831.26 MSA 1.30 (R 2 = 0.64 P < 0.05). Thus reproductive potential can be estimated for any population for which the sea-age composition of spawners is known. Assuming a target egg deposition rate of 2.4 × 10 4 eggs per hectare, required spawners varied inversely with reproductive potential among the 10 populations, from five spawners (MSA = 1.75 yr) to 16 spawners (MSA = 1.15 yr) per hectare. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canada Canadian Journal of Fisheries and Aquatic Sciences 46 12 2210 2218 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Randall, R. G. Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Reproductive potential of Atlantic salmon (Salmo salar), defined as average eggs per fish in the spawning run, varied three-fold both within stocks over time and among stocks from different geographic areas. Eggs per spawner is a function of fecundity, sea-age, proportion of females, and female size; the latter three traits varied significantly among years for salmon in both the Miramichi and Restigouche Rivers, New Brunswick. Because all of the above traits are related to sea-age at maturity, eggs per spawner was significantly correlated with mean sea-age in both rivers (R 2 = 0.88 and 0.61, respectively). Among 10 different populations in eastern Canada, reproductive potential was also correlated with sea-age; for mean sea-ages (MSA) ranging from 1.0 to 1.8 yr, reproductive potential (RP) was defined by the power regression: RP = 1831.26 MSA 1.30 (R 2 = 0.64 P < 0.05). Thus reproductive potential can be estimated for any population for which the sea-age composition of spawners is known. Assuming a target egg deposition rate of 2.4 × 10 4 eggs per hectare, required spawners varied inversely with reproductive potential among the 10 populations, from five spawners (MSA = 1.75 yr) to 16 spawners (MSA = 1.15 yr) per hectare. |
format |
Article in Journal/Newspaper |
author |
Randall, R. G. |
author_facet |
Randall, R. G. |
author_sort |
Randall, R. G. |
title |
Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada |
title_short |
Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada |
title_full |
Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada |
title_fullStr |
Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada |
title_full_unstemmed |
Effect of Sea-Age on the Reproductive Potential of Atlantic Salmon ( Salmo salar ) in Eastern Canada |
title_sort |
effect of sea-age on the reproductive potential of atlantic salmon ( salmo salar ) in eastern canada |
publisher |
Canadian Science Publishing |
publishDate |
1989 |
url |
http://dx.doi.org/10.1139/f89-272 http://www.nrcresearchpress.com/doi/pdf/10.1139/f89-272 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 46, issue 12, page 2210-2218 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f89-272 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
46 |
container_issue |
12 |
container_start_page |
2210 |
op_container_end_page |
2218 |
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1785579164462481408 |