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ICES Journal of Marine Science: Journal du Conseil 1992 49(1):65-68; doi:10.1093/icesjms/49.1.65
© 1992 by ICES/CIEM International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer
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Growth and energy budget in juvenile croaker (Micropogonias furnieri (Desmarest 1823))

Eddie O. Aristizabal Abud, Leszek B. Prenski and Gustavo R. Daleo

Facultad de Ciencias Exaclas y Naturales, Universidad Nacional de Mar de Plata ( UNMDP) Funes 3350, 7600 Mar del Plata, Argentina
Instituto Nacional de Investigacibny Desarrollo Pesquero (INIDEP) CC175, 7600 Mar del Plata, Argentina
Instituto de Investigaciones Biologicas (UNMDP) and Comision de Investigaciones Cientificas (CIC) Funes 3350, 7600 Mar del Plata, Argentina

Four different ration sizes of fresh squid (Illex argentinus) at 1 %, 3%, 5%, and 7% body weight per day were given as food to fishes weighing 32–45 g. Feeding-growth tests were run at 15 ± 1 4°C for 20 days. There was a significant increase in fish mean weight with the corresponding increase in food ration from 3% to 5% per day. Maintenance ration was established at 1.16% per day, while optimum daily ration was 3.4%. Energy absorption efficiency was 89–91%, while food energy utilization efficiency (K) was low (20% at 5% ration) with corresponding low rates of weight increase.


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