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Feeding of captive, tropical carcharhinid sharks from the Embley River estuary, northern Australia

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Salini, J.P., Tonks, M., Blaber, S.J.M. and Ross, J. (1999) Feeding of captive, tropical carcharhinid sharks from the Embley River estuary, northern Australia. Marine Ecology Progress Series, 184 . pp. 309-314. ISSN 0171-8630

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Article Link: https://doi.org/10.3354/meps184309

Abstract

Twenty carcharhinid sharks of 3 species were fed pilchards at different frequencies to examine feeding-growth relationships. These results are among the first in Australia on food intake and growth of wild-caught juvenile and sub-adult carcharhinids held in captivity. Mean consumption rates (±SE) for all feeding rations were 2.91% (±0.28) body weight per day (BWD) for Carcharhinus dussumieri, 3.44% (±0.40) BWD for C. tilstoni and 3.35% (±0.34) BWD for Negaprion acutidens. N. acutidens had the highest consumption rate of 5.02% BWD at 2 feeds d-1. Highest mean growth rates were 0.78% (±0.11) BWD for C. dussumieri, 1.34% BWD (±0.54) for C. tilstoni and 1.12% (n = 1) BWD for N. acutidens. Maintenance ration estimates were 1.29% BWD for C. dussumieri, 1.31% BWD for N. acutidens, and 2.06% BWD for C. tilstoni. These are similar to literature estimates. High consumption rates did not always translate directly to high growth rates.

Item Type:Article
Keywords:Sharks; Consumption; Growth; Feeding; Carcharhinus; Negaprion
Subjects:Aquaculture and Fisheries > Aquaculture > Fish culture
Aquaculture and Fisheries > Aquaculture > Feeding
Live Archive:13 Mar 2024 03:59
Last Modified:13 Mar 2024 03:59

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