Laboratory growth and metabolism of the winter flounderPseudopleuronectes americanusfrom hatching through metamorphosis at three temperatures
✍ Scribed by G. C. Laurence
- Publisher
- Springer-Verlag
- Year
- 1975
- Tongue
- English
- Weight
- 650 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0025-3162
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✦ Synopsis
Growth and metabolism of the winter flounder Pseudopleuronectes americanus were studied in the laboratory at 2 ~ , 5 ~ and 8oc. Dry-weight determinations of growth demonstrated significant direct regressions of growth on temperature. Mean, daily specific growth rates were 10.1%/day at 8oc, 5.8%/day at 5oc, and 2.6%/day at 2oc. Time to metamorphosis was 49 days at 8oc and 80 days at 5oc. Larvae did not survive to metamorphosis at 2oc. Absolute values of routine metabolism expressed in ul of oxygen consumed regressed on body weight were best described by a third-degree polynomial. Larval routine metabolism increased from hatching to metamorphosis, at which time it declined before again increasing. Temperature directly affected routine metabolism. Metabolism on a unit-weight basis decreased with increasing size and was also directly influenced by temperature.