Incubation of Eggs of Atlantic Salmon ( Salmo Salar ) from Different Norwegian Streams at Temperatures below 1 °C
Atlantic salmon (Salmo salar) eggs obtained from fish from five widely separated localities were incubated from fertilization until hatching at mean temperatures of 1.0 and 0.17 °C. The results indicate that an existing model used to predict time of hatching in Atlantic salmon at temperatures greate...
| Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1988
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/f88-022 http://www.nrcresearchpress.com/doi/pdf/10.1139/f88-022 |
| Summary: | Atlantic salmon (Salmo salar) eggs obtained from fish from five widely separated localities were incubated from fertilization until hatching at mean temperatures of 1.0 and 0.17 °C. The results indicate that an existing model used to predict time of hatching in Atlantic salmon at temperatures greater than 2 °C can also be applied for lower temperatures. The eggs hatched 250–260 d after fertilization at mean temperatures of 0.15–0.17 °C (38–44 day-degrees) and after 206–221 d at temperatures of 0.97–1.03 °C (205–214 day-degrees). There was no evidence of stock adaptation or of within stock adaptation to temperature at any of the different localities during the period from fertilization to hatching. |
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