Naslov
Reproductive biology of four-spot megrim Lepidorhombus boscii (Risso, 1810) from the eastern Adriatic Sea

Autori
Ugrin, Nika ; Paladin, Antonela ; Krstulović Šifner, Svjetlana

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

ISBN
978-953-7914-10-3

Skup
2nd Southeast European Ichthyological Conference (SEEIC 2022)

Mjesto i datum
Supetar, Hrvatska, 12.10.2022. - 15.10.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Lepidorhombus boscii, gonadal development, maturity, gonadosomatic index, Adriatic sea.

Sažetak
The reproductive parameters of the four-spot mergim Lepidorhombus boscii, collected by bottom trawls along the eastern Adriatic Sea were analysed by studying the seasonal macroscopic and histological changes of the gonads, fecundity and other various features related to reproduction. In total 1070 individuals were collected, from which 507 were females (47.38%), 455 males (42.52%) and 108 individuals of undetermined sex (10.09%). The total body length was ranged from 12.5 to 34.4 cm (20.02 ± 3.21 cm). Based on monthly values of gonadosomatic index and histological analysis it was determined that the four-spot mergim is spawning in November and March. Spawning period in females was characterized by the increased number of oocytes in migratory nucleus or hydrated stage with the oocyte diameter ranging from 0.003 to 0.101 mm (0.012 ± 0.021 mm) and in males with the abundance of spermatozoa. This study presents first information on the reproductive cycle of Lepidorhombus boscii in the eastern Adriatic Sea and contributes to understanding of the biology of this species necessary for its future stock management.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA