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Effect of artificial photoperiod cycles, temperature, and salinity on growth and smolting in underyearling coho (Oncorhynchus kisutch), chinook (O. Tshawytscha), and sockeye (O. nerka) salmon
| Content Provider | Semantic Scholar |
|---|---|
| Author | Clarke, W. Craig Shelbourn, John E. Brett, John R. |
| Copyright Year | 1981 |
| Abstract | Abstract Of the three environmental factors investigated, temperature had the stongest influence on growth of sockeye, coho, and fall chinook fry (starting weights 0.7, 0.7, and 1.2g, respectively). Growth of coho was significantly greater under a changing photoperiod than under a constant 12h photoperiod, whereas the chinook fry showed no consistent growth response to the photoperiod treatments. Hypo-osmoregulatory ability of juvenile coho in sea water was influenced by photoperiod, but none of the photoperiod treatments produced optimum osmoregulatory performance. Salinities up to 20‰ had little effect on growth rate in coho, sockeye, or chinook, but did prevent loss of hypo-osmoregulatory ability in the latter species at 15°C. Transfer to 29‰ during the second half of the 12-week experiment resulted in slower growth of sockeye and chinook smolts. |
| Starting Page | 105 |
| Ending Page | 116 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/0044-8486(81)90137-X |
| Alternate Webpage(s) | http://fiesta.bren.ucsb.edu/~trobinson/COMB/downloads/for-sv/sdarticle.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/0044-8486%2881%2990137-X |
| Volume Number | 22 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
