Data/hora: 09/06/2024 15:49:38

Provedor de dados: 	20	
País: 	Belgium	
Título: 	Growth, mortalities and yield per recruit of the shrimp fish scad Alepes djedaba (Forskal) (F. Carangidae), from Abu Qir Bay, Eastern Alexandria, Egypt

Growth, mortalities and yield per recruit of  A. djedaba  from Abu Qir Bay, Alexandria, Egypt	
Autores: 	El-Sayed, H.Kh.A.	
Data: 	2013-08-14	
Ano: 	2005	
Palavras-chave: 	Mortality; Yield/recruit; Growth; Carangidae.	
Resumo: 	Growth and population dynamics parameters of Alepes djedaba as an exotic carangid fish species from Red Sea into the Levant Basin of the Mediterranean Sea, were investigated. Fish samples were obtained from purse-seiners operating during the day time from Jan. to Dec. 2003 in Abu Qir Bay, Eastern Alexandria. The results obtained show that back-calculated lengths (based upon otolith readings) for the first; second and third age groups were 10.38; 15.4 and 19.32 cm TL respectively, the estimated Bertalanffy growth parameters were L∞=33.29 cm, K=0.2473 and t0= -0.51. The Length-weight relationship was represented by the formula: Log W=-1.9245+2.9762 Log L. Total mortality (Z), natural mortality (M) and fishing mortality (F) were 1.85; 0.62 and 1.23 respectively. The exploitation rate (E) was found to be 56%. A Beverton and Holt yield per recruit model indicated that the maximium sustainable yield could 20.20 g at fishing mortality F= 1.6, while the current yield per recruit was 20.10 g at fishing mortality 1.23. The results proved that the purse-seine fishery of A. diedaba is over exploited in Abu-Qir Bay and requires to be managed.	
Tipo: 	Journal Contribution	
Idioma: 	Inglês	
Identificador: 	Egyptian Journal of Aquatic Biologgy and Fisheries, 9 (4), p. 145-160

1110-6131

http://hdl.handle.net/1834/4995	
Relação: 	20 references	
Fonte: 	http://creativecommons.org/licenses/by-nc/3.0/