Acta Adriatica, Vol. 62 No. 2, 2021.
Izvorni znanstveni članak
https://doi.org/10.32582/aa.62.2.6
Reproductive traits of the European hake, Merluccius merluccius (L. 1758), in the Adriatic Sea
Barbara Zorica
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Igor Isajlović
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Nedo Vrgoč
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Vanja Čikeš Keč
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Damir Medvešek
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Vedran Vuletin
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Ivana Radonić
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Ratko Cvitanić
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Ivana Lepen Pleić
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Marija Šestanović
; Institut za oceanografiju i ribarstvo, Split, Hrvatska
Sažetak
Within this paper, reproduction traits of the Adriatic population European hake, Merluccius merluccius (Linnaeus, 1758), were investigated. Specimens of the target species were monthly collected (N=1173) during 2019 along the eastern Adriatic Sea with commercial bottom trawlers. Overall, European hake total body length varied between 15.5 and 49.5 cm (mean±SD=27.5±5.0 cm) and domination of females was noted in larger length classes (TL>31.0 cm). The sexual ratio of all specimens was m/f=0.64; male prevalence was established over the year, except during the spawning peaks (December, June) when the sex ratio was in favour of the females. According to European hake’s maturity stages, gonad weights, gonadosomatic indexes and histological analysis of the gonad tissues, this species in Adriatic spawn twice in one year; the spawning period was from December to February, while second smaller signs of spawning were observed at the beginning of the summer, in June. 50% of the European hake male and female specimens sexually matured at 20.7 cm and 22.4 cm of total length, respectively.
Ključne riječi
Sex ratio; Maturation; Spawning; Early life stages; Hake, Mediterranean
Hrčak ID:
271936
URI
Datum izdavanja:
22.12.2021.
Posjeta: 993 *