Optimum Exercise Conditioning Velocity for Growth, Muscular Development, and Swimming Performance in Young-of-the-Year Striped Bass (Morone saxatilis)
| Autor: | Joseph J. Cech, Paciencia S. Young |
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| Rok vydání: | 1994 |
| Předmět: | |
| Zdroj: | Canadian Journal of Fisheries and Aquatic Sciences. 51:1519-1527 |
| ISSN: | 1205-7533 0706-652X |
| Popis: | Young-of-the-year striped bass (Morone saxatilis) were exercise conditioned for 60 d at four different water velocities: −1(fast). Sampling for growth (body weight change), muscular development (red and white muscle cross-sectional areas), and swimming performance (critical swimming velocity) was done at 50 and 60 d of the exercise conditioning period and at 14, 28, 42, and 56 d post-conditioning. Optimum conditioning velocities for growth and swimming performance were the moderate and fast velocities, respectively, with both effects persisting 56 d post-conditioning. Fish exercised at the moderate and fast velocities showed significant increases in red muscle areas (at 0 and 14 d post-conditioning, respectively) and in white muscle areas (at 0–28 and 14–28 d post-conditioning, respectively). Exercise-conditioned fish at any velocity showed a significant increase in the red to white muscle ratio at the end of 60 d of conditioning. Our data suggest that exercise-conditioned young-of-the-year striped bass would have size and swimming advantages consistent with higher survival than unexercised fish when stocked in natural ecosystems. |
| Databáze: | OpenAIRE |
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