Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater
Changes in feeding behavior, rate of reconditioning, gonadal development, and maturation were investigated together with changes in plasma electrolytes, triglycerides, cholesterol, protein, and alkaline phosphatase in female Atlantic salmon kelts (Salmo salar) exposed to advanced and simulated natur...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1987
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Online Access: | http://dx.doi.org/10.1139/f87-085 http://www.nrcresearchpress.com/doi/pdf/10.1139/f87-085 |
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crcansciencepubl:10.1139/f87-085 2023-12-17T10:27:13+01:00 Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater Johnston, C. E. Gray, R. W. McLennan, A. Paterson, A. 1987 http://dx.doi.org/10.1139/f87-085 http://www.nrcresearchpress.com/doi/pdf/10.1139/f87-085 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 44, issue 4, page 702-711 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1987 crcansciencepubl https://doi.org/10.1139/f87-085 2023-11-19T13:39:09Z Changes in feeding behavior, rate of reconditioning, gonadal development, and maturation were investigated together with changes in plasma electrolytes, triglycerides, cholesterol, protein, and alkaline phosphatase in female Atlantic salmon kelts (Salmo salar) exposed to advanced and simulated natural photoperiods and warmer and natural water temperatures. Natural photoperiod cycles at natural and 12 °C temperatures were most stimulatory for feeding behavior, reconditioning, gonadal development, and maturation. Advancing photoperiod only slightly stimulated gametogenesis at 12 °C whereas at low temperature, vitellogenesis did not proceed and oocyte maturation did not occur. In all regimes, early reconditioning was associated with gonadal maturation. The levels of calcium, triglycerides, and alkaline phosphatase were markedly elevated in spawners and were coincident with temperature and photoperiod manipulation. No similar change occurred in nonspawners. Ovulation occurred earliest in the advanced photoperiod and 12 °C temperature regime, suggesting an effect of both temperature and photoperiod on the rate of gonadal maturation. The factors influencing egg production and maturation in Atlantic salmon kelts are also discussed. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 44 4 702 711 |
institution |
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 Johnston, C. E. Gray, R. W. McLennan, A. Paterson, A. Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Changes in feeding behavior, rate of reconditioning, gonadal development, and maturation were investigated together with changes in plasma electrolytes, triglycerides, cholesterol, protein, and alkaline phosphatase in female Atlantic salmon kelts (Salmo salar) exposed to advanced and simulated natural photoperiods and warmer and natural water temperatures. Natural photoperiod cycles at natural and 12 °C temperatures were most stimulatory for feeding behavior, reconditioning, gonadal development, and maturation. Advancing photoperiod only slightly stimulated gametogenesis at 12 °C whereas at low temperature, vitellogenesis did not proceed and oocyte maturation did not occur. In all regimes, early reconditioning was associated with gonadal maturation. The levels of calcium, triglycerides, and alkaline phosphatase were markedly elevated in spawners and were coincident with temperature and photoperiod manipulation. No similar change occurred in nonspawners. Ovulation occurred earliest in the advanced photoperiod and 12 °C temperature regime, suggesting an effect of both temperature and photoperiod on the rate of gonadal maturation. The factors influencing egg production and maturation in Atlantic salmon kelts are also discussed. |
format |
Article in Journal/Newspaper |
author |
Johnston, C. E. Gray, R. W. McLennan, A. Paterson, A. |
author_facet |
Johnston, C. E. Gray, R. W. McLennan, A. Paterson, A. |
author_sort |
Johnston, C. E. |
title |
Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater |
title_short |
Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater |
title_full |
Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater |
title_fullStr |
Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater |
title_full_unstemmed |
Effects of Photoperiod, Temperature, and Diet on the Reconditioning Response, Blood Chemistry, and Gonad Maturation of Atlantic Salmon Kelts ( Salmo salar ) Held in Freshwater |
title_sort |
effects of photoperiod, temperature, and diet on the reconditioning response, blood chemistry, and gonad maturation of atlantic salmon kelts ( salmo salar ) held in freshwater |
publisher |
Canadian Science Publishing |
publishDate |
1987 |
url |
http://dx.doi.org/10.1139/f87-085 http://www.nrcresearchpress.com/doi/pdf/10.1139/f87-085 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 44, issue 4, page 702-711 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f87-085 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
44 |
container_issue |
4 |
container_start_page |
702 |
op_container_end_page |
711 |
_version_ |
1785579014983778304 |