engleski

Reproductive biology of red mullet, Mullus barbatus (Linnaeus, 1758) from the eastern Adriatic Sea

The macroscopic and histological techniques were used to determine the changes occurring in gonads development of the red mullet, Mullus barbatus, from the eastern Adriatic Sea. In total 404 individuals were collected from March to October, from which 304 were females (75, 25%), 92 males (22, 72%) and 8 individuals of undetermined sex (1, 98%). The total body length was ranged from 11.5 to 22, 5 cm (18, 72 ± 1, 11 cm). The gonadosomatic index (GSI) of females ranged from 0, 12 to 9, 93 (2, 85 ± 2, 53) with the highest value in April (6, 79 ± 1, 53). Based on macroscopic and histological examination of the ovaries of Mullus barbatus five different developmental stages were identified. Based on monthly values of gonadosomatic index and histological analysis it was determined that the red mullet, Mullus barbatus, is spawning from April to June.

Mullus barbatus, gonads, histological analysis spawning

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