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Karimzadeh, G., Gabrielyan, B., Fazli, H.. (1389). Population dynamics and biological characteristics of kilka species (Pisces: Clupeonidae) in southeastern coast of the Caspian Sea. سامانه مدیریت نشریات علمی, 9(3), 422-433. doi: 10.22092/ijfs.2018.114101
G. Karimzadeh; B. Gabrielyan; H. Fazli. "Population dynamics and biological characteristics of kilka species (Pisces: Clupeonidae) in southeastern coast of the Caspian Sea". سامانه مدیریت نشریات علمی, 9, 3, 1389, 422-433. doi: 10.22092/ijfs.2018.114101
Karimzadeh, G., Gabrielyan, B., Fazli, H.. (1389). 'Population dynamics and biological characteristics of kilka species (Pisces: Clupeonidae) in southeastern coast of the Caspian Sea', سامانه مدیریت نشریات علمی, 9(3), pp. 422-433. doi: 10.22092/ijfs.2018.114101
Karimzadeh, G., Gabrielyan, B., Fazli, H.. Population dynamics and biological characteristics of kilka species (Pisces: Clupeonidae) in southeastern coast of the Caspian Sea. سامانه مدیریت نشریات علمی, 1389; 9(3): 422-433. doi: 10.22092/ijfs.2018.114101

Population dynamics and biological characteristics of kilka species (Pisces: Clupeonidae) in southeastern coast of the Caspian Sea

Iranian Journal of Fisheries Sciences
مقاله 8، دوره 9، شماره 3، آذر 2010، صفحه 422-433    اصل مقاله (348.78 K)
شناسه دیجیتال (DOI): 10.22092/ijfs.2018.114101
نویسندگان
G. Karimzadeh* ؛ B. Gabrielyan؛ H. Fazli
چکیده
  The aim of the present study was to investigate the age structure, length-weight relationship, sex ratio, sexual maturity stages, growth parameters, natural and fishing mortality coefficients of three species of kilka including common, anchovy and bigeye kilka. The fork length–weight relationship of common, anchovy and bigeye kilka were calculated as W=0.000153 FL2.37, W=0.000349 FL2.18 and W=0.00160 FL2.97, respectively. The parameters of the von Bertalanffy growth curve for length were L∞ = 143.5 mm, K = 0.30 yr-1 and t0 = -1.02 yr for common kilka L∞ = 151.9 mm, K = 0.28 yr-1 and t0 = -1.12 yr for anchovy kilka L∞ = 148.6 mm, K = 0.46 yr-1 and t0 = -0.18 yr for bigeye kilka. The instantaneous coefficient of natural mortality of common, anchovy and bigeye kilka were estimated as 0.671, 0.633 and 0.881 yr-1, respectively. The current exploitation rates of three species were estimated as 0.55, 0.41 and 0.26, respectively. The results suggest that common kilka stock is under over-fishing now.
کلیدواژه‌ها
Clupeonella cultriventris caspia؛ C. engrauliformis؛ C. grimmi؛ Growth؛ Sexual maturity stage
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تعداد مشاهده مقاله: 121
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