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vol-33BIOLOGICAL STUDIES ON RH ABDOSARGUS HAFFARA
(TELEOST; SPARIDAE) FROM ARABIAN GULF OF DAMMAM,
SAUDI ARABIA
HEYAM ABDALLAH EL ABDEL HADY
Faculty of Science for Girls, Dammam, Kingdom of Saudi Arabia
ABSTRACT
Age and growth were investigated for Rhabdosargus haffara collected from Arabian
Gulf water off Dammam City, Kingdom of Saudi Arabia. Length-scale relationship was
found to be linear (T.L= 7.62 + 15.43S). V.B.G. parameters were estimated and found to
be, L∞ = 27.74 cm, W∞, 399.95 gm, K = 0.17 per year and T0 = -1.85 year. Growth
performance, Ф = 2.12 and maximum age was computed as 15.82 year. Length-weight
relationship was found to be slightly allometric with constants a = 0.013 and b = 3.11.
(w=aLh
) Sex ratio was in the favor of females outside the spawning season, while males
were dominant during the spawning season. Natural mortality was estimated and found to
be 0.68 per year.
