Laboratory growth and metabolism of the winter flounder Pseudopleuronectes americanus from hatching through metamorphosis at three temperatures |
| |
Authors: | G C Laurence |
| |
Institution: | 1. Northeast Fisheries Center, Narragansett Laboratory, National Marine Fisheries Service, Narraganset, Rhode Island, USA
|
| |
Abstract: | Growth and metabolism of the winter flounder Pseudopleuronectes americanus were studied in the laboratory at 2°, 5° and 8°C. Dry-weight determinations of growth demonstrated significant direct regressions of growth on temperature. Mean, daily specific growth rates were 10.1%/day at 80°C, 5.8%/day at 50°C, and 2.6%/day at 2°C. Time to metamorphosis was 49 days at 8°C and 80 days at 5°C. Larvae did not survive to metamorphosis at 2°C. Absolute values of routine metabolism expressed in μl 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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|