Naslov
Net-pen culture of Seriola dumerili in Mediterranean: implications for the sustainable management

Autori
Šegvić-Bubić, Tanja ; Talijančić, Igor ; Žužul, Iva ; Žuvić, Luka ; Grubišić, Leon ; Izquierdo- Gomez, David

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
14th International Aquaculture Conference, Book of Abstracts / Filić, Želimir - : Hrvatska gospodarska komora (HGK), 2023, 77-77

Skup
14th International Aquaculture Conference

Mjesto i datum
Vukovar, Hrvatska, 29.03.2023. - 31.03.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
Greater amberjack, Mariculture, Escapes, Coastal management

Sažetak
Commercial mariculture of greater amberjack Seriola dumerili recently started in Mediterranean countries. To cope with climate change, the greater amberjack provides an opportunity to fill emerging niches in marine warm water cage culture. Nevertheless, storm Gloria (January 2020), which devastated most marine net cage systems on the west coast of the Mediterranean and about 70% of Spanish finfish production, was a turning point for the introduction of management measures for new species in aquaculture, as thousands of greater amberjack escaped into the wild for the first time. Because fish that have escaped from marine net pens can have numerous ecological impacts on their wild counterparts, this study investigated what morphological and genetic characteristics can be used to distinguish the origin of the greater amberjack. Accurate identification of wild or farmed fish can prevent fraud in sales or a drop in price due to the landing of large biomasses of the species that typically occur after an escape event. Three techniquesgeometric morphometrics, microsatellite markers, and a combination of both in a supervised machine learning system-were applied to a total of 490 fish from wild and farmed stocks from the western and central Mediterranean Sea. Due to differences in body shape, head profile, and mouth position between wild and farmed stocks associated with high genetic differentiation, the applied methods proved successful in correctly assigning of fish. Consequently, adaptive contingency plans to prevent, mitigate, and control potential negative effects of escape events in the wild are discussed.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

POVEZANOST RADA