Estimating the food consumption per unit biomass of a population of Epinephelus fuscoguttatus (Pisces: Serranidae)

Food consumption per unit biomass (Q/B) was estimated for a natural population of Epinephelus fuscoguttalus based on data from cage culture experiments in Guiuan, Eastern Samar, Philippines using recently developed models structured around the analysis of food conversion efficiencies (K sub(1)). Gro...

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Hauptverfasser: Palomares, MLD, Pagdilao, C R
Format: Buchkapitel
Sprache:eng
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Zusammenfassung:Food consumption per unit biomass (Q/B) was estimated for a natural population of Epinephelus fuscoguttalus based on data from cage culture experiments in Guiuan, Eastern Samar, Philippines using recently developed models structured around the analysis of food conversion efficiencies (K sub(1)). Growth parameters used where asymptotic length (L sub( infinity )) = 91.7 cm, asymptotic weight (W sub( infinity )) = 12,338 g, growth coefficient (K) = 0.19, total mortality (Z) = 0.44 and age at length zero (t sub(0)) = -0.66 all on annual basis. Population estimates of Q/B per year is 4.01 and maintenance ration is 2.9/year or 0.8% of body weight per day. Effects of ration and body weight on K sub(1) as well as that of Z on trophic efficiency (E sub(T)) and Q/B are discussed.
ISSN:0429-9337