The Israeli Journal of Aquaculture - Bamidgeh 53(3-4), 2001, 139-146

EFFECTS OF LIGHT INTENSITY ON EARLY LIFE DEVELOPMENT
OF GILTHEAD SEA BREAM LARVAE (SPARUS AURATA)

Sahin Saka, Kürat Firat and Cüneyt Süzer

Department of Aquaculture, Faculty of Fisheries, Ege University, 35440 Urla-Iskele, Izmir, Türkiye

(Received 9.7.01,Accepted 7.10.01)

Key words: larvae development, light intensity, sea bream, survival

Abstract

The effects of different levels of illumination on sea bream (Sparus aurata, L.1758) larvae were examined. The best total length development and highest survival rate were achieved in a dark environment. Illumination affected the relationships between total length and digestive tube length, total length and oil globule volume, and total length and yolk sac volume. The relationships between total length and digestive tube length, and total length and oil globule volume were not significantly different (p>0.05) among groups whereas the relationship between total length and yolk sac volume was significantly different (p<0.05) between the group under 450 lux illumination and the group under 30 lux. All the relationships were significantly different (p<0.05) between groups kept in complete darkness and those which were illuminated.

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