Turkish Journal of Fisheries and Aquatic Sciences
2009, Vol 9, Num, 1 (Pages: 59-66)
Some Biological Aspects of Atlantic Stargazer Uranoscopus scaber Linnaeus, 1758 (Family: Uranoscopidae) in The Egyptian Mediterranean Water
Samir I. Rizkalla 1 ,Shnoudy A. Bakhoum 1
1 National Institute of Oceanography and Fisheries, Alexandria, Egypt
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Atlantic stargazer (Uranoscopus scaber Linnaeus, 1758) fish samples were monthly collected during 2001-2002 from
landing of bottom trawlers operating off Alexandria, Egypt. The results revealed that this species did not exceed five years of
age and females were larger than males, reaching 30.0 cm and 26.0 cm, respectively. The study of length-weight relationship
showed that no significant difference between males and females (P>0.05). Growth performance in length (Ф/) and weight
(Ф) were found to be 2.62 and 1.05, respectively. The von Bertalanffy growth parameters were found to be L∞ =35.02 cm,
K=0.3424 yr-1 and to=- 1.011 yr. The rates of total mortality (Z), natural mortality (M) and fishing mortality (F) were 0.901
yr-1, 0.554 yr-1 and 0.347 yr-1, respectively. This population is characterized by low exploitation rate (E= 0.229).
Keywords :
age, growth, mortality, Uranoscopus scaber, South Eastern Mediterranean