Temperature preference and tolerance, and oxygen consumption of the marbled rockfish,Sebastiscus marmoratus

✍ Scribed by J. Kita; S. Tsuchida; T. Setoguma

• Book ID: 104736213
• Publisher: Springer-Verlag
• Year: 1996
• Tongue: English
• Weight: 483 KB
• Volume: 125
• Category: Article
• ISSN: 0025-3162
• DOI: 10.1007/bf00353259

✦ Synopsis

Behavioral and metabolic responses of the marbled rockfish, Sebastiscus marmoratus (Cuvier), to temperature were measured to define optimal thermal habitat. Preferred temperature was determined by means of a newly developed horizontal temperaturegradient tank. Acclimation temperature had a direct positive effect on critical thermal maxima and minima and upper lethal temperatures but no effect on final preferred temperature. It was indicated that upper temperature tolerance and final preferred temperature of the marbled rockfish were closely connected. Oxygen consumption rate increased with temperature to 23 ~ but Qlo (the increase in rate caused by 10 ~ increase in temperature) declined above 20~

The maximum Qlo (4.69) occurred between 15 and 20~ The final preferred temperature of 20.7 _+1.5~ corresponded well to the temperature at which increase in oxygen consumption rate with temperature gradually lessened, approximately 20 ~ Communicated by T. Ikeda, Hiroshima