Reproductive histology of the saddled seabream Oblada melanura in the southern Mediterranean Sea (Tunisian coast)

• Autorzy: Kalai Saoussen , Khoufi Widien , Meriem Sadok Ben

Identyfikatory

DOI

10.26881/oahs-2024.2.10

• Języki publikacji: EN

Abstrakty

EN

The saddle seabream, Oblada melanura, is an important species in Mediterranean coastal fisheries. The artisanal gillnet fishery on Tunisia’s northern coast was sampled on a monthly basis between April 2015 and March 2016. The sex ratio varied by month throughout the year, with females dominating from November to December and equal sex ratios during the rest of the year. For both sexes, gonad maturity and gonadosomatic index (IG) indicated that spawning occurs from May to September. In terms of energy investment, fish feed throughout the year. During the spawning period (May to September), gonadal production (IG) appears to be supported by liver reserves (IH). These reserves came from external sources (i.e. food) in the period before spawning. During the spawning period, it was necessary for the fish to continue feeding in order to support their body development. Estimated lengths at 50% maturity were similar for females (L50 = 17.14 cm) and males (L50 = 17.01 cm).

Słowa kluczowe

EN

biology; maturity; Sparidae; Tunisia

• Wydawca: Institute of Oceanography University of Gdańsk
• Czasopismo: Oceanological and Hydrobiological Studies
• Rocznik: 2024
• Tom: Vol. 53, No. 2
• Strony: 208--217
• Opis fizyczny: Bibliogr. 54 poz., fot., map. tab., wykr.

Twórcy

autor

Kalai Saoussen

• INSTM (National of Marine Sciences and Technologies Institute), Tunis, Tunisia

autor

Khoufi Widien

• LATVPEP, Laboratory of Analysis, Treatment and Valorisation of the Pollutants of the Environment and Products, Faculty of Pharmacy, Tunisia

autor

Meriem Sadok Ben

• INSTM (National of Marine Sciences and Technologies Institute), Tunis, Tunisia

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