دراسة العادات الغذائية، الكبد والتكاثر لبعض أسماك جنس البراكشة Serranus Spp. في سواحل بنغازي شتاء 2018م

Esam M. K. Buzaid

doi:10.59743/jmset.v4i1.88

Authors

Esam M. K. Buzaid Marine Sciences Division, Zoology Department, Faculty of Sciences, Omar Al-Mukhtar University, Albayda city, Libya.

DOI:

https://doi.org/10.59743/jmset.v4i1.88

Keywords:

Fishes, Serranus spp., Benghazi, Libya

Abstract

From December 2017 to February 2018, 336 specimens of three species of Serranus spp. were collected from Jilianah Harbor, Benghazi, to study the length-weight relationship, condition factors, food and feeding, and reproduction situation as well. Specimens of S. cabrilla and C. hepatus had no intensive feeding, unlike S. scriba, which was well-fed. Crustaceans like copepods and young shrimps dominated the menu of our species at 48.6, 33.7 and 36.1%, respectively, followed by a highly-various food ingredient for each species. The highest values of the S. cabrilla H.S.I. were 2.27, 2.28 at S. hepatus, and 1.85 for S. scriba specimens. Individuals of S. cabrilla and S. scriba were clearly equal in sex ratio, with female dominance in S. hepatus study stock. G.S.I. was also high with size increasing to (7.16) for females and (2.51) for males of S. cabrilla. Meanwhile the nadir values of S. hepatus (0.98) peaked to 3.96 dramatically in females. It was increased with S. scriba with length to 4.44 in females. The med-sized specimens of S. cabrilla (14.4 cm) obtained a quarter of the study stock, and the highest incidence of S. hepatus (10.4 cm) was 34.9%, and was the lowest in the largest group (2.3%), while the largest S. scriba (18.4 cm) was predominant by more than a third of the study samples, and the least appearance of the smallest ones to 2.7%, This study is beneficial to facilitate studies of the population dynamics of these species and other economically-important fish in the Libyan coast, to work on the fish stocks assessment, and to protect the juveniles from overfishing.

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