Fisheries and Aquaculture Journal
Open Access
ISSN: 2150-3508
+44 1478 350008
ISSN: 2150-3508
+44 1478 350008
Samuel Kweku Konney Amponsah
CSIR-Food Research Institute,
PO BOX M 20, Accra
Ghana
Research Article
Population Dynamics of Bigeye Grunt, Brachydeuterus auritus (Valenciennes, 1831) in Ghana and Management Implications
Author(s): Samuel Kweku Konney Amponsah, Ali Abdulhakim, Patrick Ofori-Danson and Kofi Ferni AnyanSamuel Kweku Konney Amponsah, Ali Abdulhakim, Patrick Ofori-Danson and Kofi Ferni Anyan
Population dynamics of Brachydeuterus auritus harvested from Ghana’s coastal waters was assessed following pervious indications that this important species is collapsing. In view of this, a total of 849 samples of B. auritus were collected from February 2016 to January 2017, measured for total lengths and examined using FiSAT II. The mean length was 13.7 cm with a growth pattern of 2.8. The asymptotic length (L∞) and growth rate (K) were 21.53 cm and 0.67 yr-1 respectively portraying that this species is a faster growing species. The lengths at first maturity and capture were calculated as 14.4 cm and 6.02 cm respectively which indicated the presence of growth overfishing. The critical length at capture (Lc=0.28) was lower than 0.5, supporting the earlier assertion that the investigated fish species is plagued with growth overfishing. Natural m.. View More»
DOI:
10.4172/2150-3508.1000233