Growth characteristics, sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in Iskenderun Bay
[ N/A ]
Tarih
2003
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The total length of examined samples of striped sea bream in ?Iskenderun Bay ranged from 9.1 to 27.7 cm. The lengthweight relationship constants for males (a = 0.0112, b = 3.042) and females (a = 0.0105, b = 3.069), showed no significant difference from isometric growth (P < 0.05). Von Bertalanffy growth parameters in length were L? = 26.55 cm, K = 0.203 y-1 and t0 = -1.81 y for males and L? = 32.64 cm, K = 0.136 y-1 and t0 = -2.12 y for females. Sex inversion occurred at lengths between 11.2 and 22.9 cm in age groups I-VI. Males were observed up to a length of 22.8 cm. Total, natural and fishing mortality rates were Z = 1.15 y-1, M = 0.48 y-1 and F = 0.67 y-1 respectively. The exploitation rate of E = 0.60 indicates that the population is being heavily exploited. Reproductive activity of striped sea bream in Iskenderun Bay took place between the second half of April and early August, with the greatest intensity in May. Lengths at first maturity were 13.4 cm for males and 13.9 cm for females.
Açıklama
Anahtar Kelimeler
Exploitation rates, Growth and reproductive characteristics, Iskenderun Bay, Mortality, Sex inversion (hermaphroditism), Striped sea bream
Kaynak
Turkish Journal of Zoology
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
27
Sayı
4
