文章基本信息

标题：Models for length back-calculation in Caspian Kutum,Rutilus kutum (Pisces: Cyprinidae) from the Caspian Sea
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作者：s eskandari ; M.K Khalesi ; M Khoramgah 等
期刊名称：Caspian Journal of Environmental Sciences
印刷版ISSN：1735-3033
电子版ISSN：1735-3866
出版年度：2018
卷号：16
期号：1
页码：11-21
DOI：10.22124/CJES.2018.277
语种：English
出版社：University of Guilan
摘要：The Caspian Kutum,Rutilus Kutum (Kamensky 1901) specimens were sampled by purse seine in the northern Iranian coast of the Caspian Sea at four locations: Feridoonkenar Shahed,Mahmoudabad Khoram,Lariim Azadi fishing coop,and the Shiroud River in Ramsar city.“Back-calculation” is a retrospective method of estimating the characteristics of growth of fish in terms of length and rate of growth in the years preceding capture.Back-calculation of fish lengths at previous ages from scales or otoliths is a widely used approach to estimate both individual and population growth history.The back-calculated lengths of the Caspian kutum,Rutilus kutum (Kamensky 1901) were obtained using six different models,namely scale proportional hypothesis,body proportional hypothesis,Fraser Lee,nonlinear scale proportional hypothesis,nonlinear body proportional hypothesis,and the newest method,Morita Matsuishi model.The results showed that the preferred back-calculation models is Fraser Lee model for both males and females,while the nonlinear body proportional hypothesis is only for the females.
关键词：Northern Iran;Back-calculation;Rutilus kutum