Naslov
Catch structure of purse seine bluefin tuna fishing in the Adriatic Sea: the first age frequency distribution estimate based on a spine age-length key

Autori
Katavić, Ivan ; Grubišić, Leon ; Tičina, Vjekoslav ; Šegvić-Bubić, Tanja ; Maleš, Josip ; Talijančić, Igor ; Žužul, Iva

Izvornik
Collective volume of scientific papers - International Commission for the Conservation of Atlantic Tunas (1021-5212) 73 (2017), 7; 2535-2542

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, stručni

Ključne riječi
Atlantic bluefin tuna ; purse seine ; juveniles ; age estimate ; size-age grouping ; Adriatic Sea

Sažetak
This study analyses the size-age structure of bluefin tuna (BFT) juveniles captured by Croatian purse seine fleet in the central Adriatic in 2016 by applying the available age-length key (ALK) of spine radius. The results indicated a relatively normal size distribution for BFT captured in central Adriatic during purse seine BFT campaign in 2016, with a large mode of fish from 75 to 85 cm that appear to belong to the age 2 class. There is a predictable and stable relationship in the size-age grouping of BFT tuna captured in the central Adriatic. Considering that the majority of BFT juveniles spend their first years feeding together with a significant degree of size homogenization, the observed schooling pattern may facilitate legal purse seine fishing for caging in Adriatic.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

POVEZANOST RADA