Abstract
Pond-nursed pike-perch (Sander lucioperca) fry were trained to artificial diet and reared under controlled conditions maintained in aquaria using three stocking densities (1.25, 1.66 and 2.08 g/l). Two replicates per treatment were applied. The survival during the 4-week period of the experiment ranged from 44.2 to 49.6%. The majority of the losses were caused by cannibalism; only 8–14% could be attributed to natural mortality. Both cannibalism and natural mortality occurred in the first 2–3 weeks of rearing. The differences in the rate of cannibalism were independent of the stocking density. Natural mortality decreased with increasing density, consequently the highest survival was observed under the highest stocking density. Stocking density did not significantly influence growth, feed consumption and feed conversion ratio of the pike-perch fingerlings (p < 0.05).
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Molnár, T., Hancz, C., Bódis, M. et al. The Effect of Initial Stocking Density on Growth and Survival of Pike-perch Fingerlings Reared under Intensive Conditions. Aquaculture International 12, 181–189 (2004). https://doi.org/10.1023/B:AQUI.0000032079.62056.8c
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DOI: https://doi.org/10.1023/B:AQUI.0000032079.62056.8c