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    Population Dynamics of Seabreams (Pagrus caeruleostictus, Pagellus bellottii, Dentex angolensis and Dentex congoensis) from the Coast of Ghana, West Africa
    (Çanakkale Onsekiz Mart Üniversitesi, 2023) Amponsah, Samuel K.K.; Asiedu, Berchie; Amarquaye, Nii Commey; Ofori-Boateng, Emmanuel; Afranewaa, Nana Ama B.; Henneh, Samuel
    Stock assessment indicators of Pagrus caeruloestictus, Pagellus bellotti, Dentex angolensis and Dentex congoensis from Ghana’s coastal waters were estimated between July 2018 and June 2019. Total length measurements of 2489 samples were collected from some selected coastal communities along the Greater Accra region of Ghana and analyzed using FISAT II Tool. The asymptotic length (L∞) for P. caeruleostictus, P. bellottii, D. angolensis and D. congoensis was 39.9 cm, 31.5 cm, 31.5 cm and 28.4 cm, respectively. The growth rate (K) was 0.18 yr-1 for P. caeruleostictus, 0.36 yr-1 for P. bellottii, 0.75 yr-1 for D. angolensis and 0.83 yr-1 for D. congoensis. The current exploitation rate (E) for P. caeruloestictus, P. bellotti, D. angolensis and D. congoensis was above the optimum level of 0.5, indicating that these species are facing high fishing pressure. To ensure sustainable management of the overexploited fish species, the need for relevant management measures such extension of the closed fishing season, reduced fishing effort and others are urgently required.
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    Reproductive Biology of Red Pandora (Pagellus bellottii Steindachner, 1882) from the Coast of Ghana and Implications for Management
    (Çanakkale Onsekiz Mart Üniversitesi, 2024) Amponsah, Samuel K.K.
    A total of 933 samples of Pagellus bellottii were obtained from the coast of Ghana between January and December 2019, from commercial catches to determine the sex ratio, maturity stages, spawning period, and length at first maturity. The male to female ratio was 1.39:1. July and May were the main spawning peaks for female individuals of the assessed fish species. Two spawning periods were observed with a minor spawning period from November to January and major spawning from March to September. Female individuals matured slightly earlier than male individuals at 20 cm and 20.8 cm respectively. The results of this study could help to revise the existing minimum capture size of Red Pandora in Ghana.