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The photoperiod control of coho salmon smoltification
Ist Teil von
Aquaculture, 1982-01, Vol.28 (1), p.105-111
Ort / Verlag
Elsevier B.V
Erscheinungsjahr
1982
Link zum Volltext
Quelle
Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)
Beschreibungen/Notizen
Photoperiod has been implicated as an effective mediator of coho salmon smoltification. To investigate the possibility of manipulating photoperiod to control the occurrence of this event, a study on coho salmon (1.7 g initial weight) was conducted over a 24-week period. Of the treatments tested: natural; rate extended; sustained maximum; and phase adjusted; the latter resulted in the greatest level of growth and smoltification in terms of osmoregulatory ability. This suggested that not only was the appropriate photoperiod important to smoltification, but so were certain growth characteristics such as absolute weight and growth rate.