Naslov
A review: Adriatic groupers - Status of natural populations and breeding perspectives

Autori
Glamuzina, Branko ; Skaramuca, Boško

Izvornik
Acta Adriatica (0001-5113) 40 (1999), Supplement; 79-90

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pregledni rad, znanstveni

Ključne riječi
Adriatic groupers; natural populations; breeding

Sažetak
Short review about status of natural populations of four grouper species that live in the Adriatic is presented. All groupers belong to genus Epinephelus. There are: dusky grouper, Epinephelus marginatus, white grouper, Epinephelus aeneus, golden grouper, Epinephelus costae and dogtooth grouper, Epinephelus caninus. The main biological characteristics, which influence the Adriatic groupers populations, are tropical origin and protogynic hermaphroditisms. As a tropical species living in the Adriatic on the edge of their distribution, they not exibit many of their characteristics, such as good growth rate and spawning during few months period. Protogynic hermaphroditism as a mode of reproduction is also problematic in our conditions, because elimination of male from population could influence whole spawning. Among the four species only dusky grouper is of interest for Adriatic fishery. Mainly, because other three species are relatively rear. The yearly catch of dusky grouper in the Adriatic is estimated around 30 tons. Presently, three species are objects of research on introduction in aquaculture, dusky, goldblotch and white grouper. Dusky grouper is investigated in Croatia and Italy, goldblotch grouper in Croatia and white grouper in Israel. Main achievements of this research in our Laboratory are successful induced spawning, description of early stages, and experiments on larval rearing. Furthermore, we made a sex-reversal of smaller females and immature fish and obtained small fertile males. Future research will concentrate on larval feeding and production of juveniles for growth experiments.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA