Acronym NA
Category
Aquaculture
Title Approccio conoscitivo per il consolidamento delle tecniche di riproduzione controllata della cernia di scoglio (Epinephelus marginatus) e della ricciola (Seriola dumerilii) - Fact-finding approach to the consolidation of controlled reproduction techniques for the dusky grouper (Epinephelus marginatus) and the Mediterranean amberjack (Seriola dumerilii) Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National
Coordinator institution
ISPRA - Italian National Institute for Environmental Protection and Research (Italy)
Institutions involved
NA
Start year 2000 End year 2003 Funding (€) € NA Website NA Summary During the reproductive seasons 2001 and 2002, amberjack spawners were thermally conditioned from April to June. Thermal regime favoured gonad maturation and 70% of females completed exogenous vitellogenesis. Hormonal induction performed with synthetic analogs of GnRHa and human corionic gonadotropin led to egg emission characterized of low percentage of fertilization that might be due to failure to release sperm in the tank or to a lack of synchronization of the deposition event in the two sexes. In the course of this project the dusky grouper was reproduced for the first time in captivity. The reproduction of this species is also the first positive result to emerge from repeated attempts by various research groups on various species of the genus Epinephelus in the Mediterranean. At the end of these tests more than 13000 dusky grouper juveniles had been obtained with a body weight of 1.42 ± 0.6 gr and a survival rate of 12%. This result was obtained through the development of hormone induction techniques that allowed high quality eggs to be obtained as well as through a series of technical procedures enabling the problems encountered in rearing module management during the early larval stages to be solved.
Keywords
Larval rearing;
Engineering;
Fish;
Dusky grouper;
Amberjacks;
Fish biology;
Fish reproduction;
Marine Region
71
South of Sicily (GSA 16)
1
Marine Region Map
