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Time of first feeding of Atlantic halibut, Hippoglossus hippoglossus L., larvae
Author(s) -
Harboe T,
MangorJensen A
Publication year - 1998
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1046/j.1365-2109.1998.29120913.x
Subject(s) - hippoglossus hippoglossus , halibut , biology , hatching , larva , fishery , zoology , ecology , fish <actinopterygii>
Atlantic halibut, Hippoglossus hippoglossus (L.), eggs originating from one female were evenly distributed between four silos (4.8 m 3 ) shortly prior to hatching. At days 30, 35, 40 and 44 after hatching [i.e. 200, 230, 260 and 290 day‐degrees (days o )], the larvae were successively collected and transferred to indoor start feeding tanks, and larvae were offered a diet of instar II Artemia nauplii which had been enriched short time (24 h). A significant correlation was found between the age of the larvae and onset of first feeding. The larvae transferred to start‐feeding incubators at 290 days o were able to capture Artemia only a few hours after transfer, whereas it took 6 days for the larvae transferred at 200 days o to reach a corresponding ingestion level. Larval growth was also positively correlated to both larval age and prey consumption. However, there were no differences in survival between the larval groups.