The objective of this study was to examine the impact of crowding (stocking density) on food consumption and growth of juvenile Sepia officinalis reared at 17 and 25 °C. Two groups of 75 cuttlefish each were reared in closed seawater systems with water temperatures of 17 and 25 °C. Each group was subdivided into two treatments (three replicates per treatment): low-density (equivalent to 100 Sepia m −2 ) and high-density (equivalent to 400 Sepia m −2 ). Food consumption was measured daily and live wet body weight (g) was measured weekly over a 5-week study. The 25 °C treatment resulted in significantly higher growth rates and food consumption compared to the 17 °C treatment. Stocking density had no statistically significant effect on food consumption, gross growth efficiency (GGE), or weight at either temperature. However, the high-density treatments had slightly lower GGE values overall and growth in weight at 25 °C was slightly but consistently lower in the high-density treatment suggesting that stocking densities of 400 Sepia m −2 may be approaching levels that impact feeding and growth.
Journal of Experimental Marine Biology and Ecology – Elsevier
Published: Mar 29, 2002
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