Light intensity requirements for feeding behaviour by the brown-marbled grouper, Epinephelus fuscoguttatus

Mukai, Yukinori and Lim, Leong Seng and Lu, Kien Chee and Mohamed Kamil Abdul Rashid, and Shahbudin Saad, (2012) Light intensity requirements for feeding behaviour by the brown-marbled grouper, Epinephelus fuscoguttatus. Sains Malaysiana, 41 (10). pp. 1193-1196. ISSN 0126-6039

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Abstract

In this study, we investigated the feeding behavior of the brown-marbled grouper, Epinephelus fuscoguttatus with light intensities ranging over eight orders of magnitude from 0 - 1000 lx to estimate the optimum light intensity for larval rearing. Artemia ingestion rates of E. fuscoguttatus of 36 days and 42 days old larvae were measured in feeding behavior experiments and they were significantly higher with light intensities ≥10 lx compared with feeding rates at ≤ 1 lx. E. fuscoguttatus larvae also exhibited Artemia ingestion rates in the dark or in dim lighting (0 - 1 lx) that were about 20% of the ingestion rates with ≥ 10 lx.

Item Type:Article
Uncontrolled Keywords:Brown-marbled grouper, Epinephelus fuscoguttatus, Feeding behavior, Ingestion rates, Visual thresholds, Experimental study, Feeding behavior, Fish, Ingestion rate, Light intensity, Artemia, Epinephelus fuscoguttatus
Subjects:?? SH151-179 ??
Divisions:SCHOOL > Borneo Marine Research Institute
ID Code:5356
Deposited By:IR Admin
Deposited On:08 Nov 2012 16:59
Last Modified:18 Feb 2015 10:17

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