Offspring investment in wild Atlantic salmon ( Salmo salar): relationships with smolt age and spawning condition
Abstract We investigated the independent effects of age at smolting and body condition at the time of spawning on egg production by female A tlantic salmon ( Salmo salar ). For a given body size, female salmon that had smolted as juveniles after 2 years in fresh water produced smaller, more numerous...
| Published in: | Ecology of Freshwater Fish |
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| Main Authors: | , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2012
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/eff.12019 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12019 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12019 |
| Summary: | Abstract We investigated the independent effects of age at smolting and body condition at the time of spawning on egg production by female A tlantic salmon ( Salmo salar ). For a given body size, female salmon that had smolted as juveniles after 2 years in fresh water produced smaller, more numerous eggs than females that smolted 1 year later. Furthermore, fecundity (but not egg size) was related positively to maternal body condition at spawning. Given that age at smolting is closely related to juvenile growth rate; results from this study suggest that conditions experienced by female A tlantic salmon during both early life and adulthood have implications for the size and number of eggs that they produce. |
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