Population dynamics of Caspian sand smelt (Atherina caspia) in Gorgan Bay-southeastern Caspian Sea

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Harak Atta Fatemeh; Patimar Rahman; RAEISI HADI; Kordjazi Ziya

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Journal: JOURNAL OF MARINE BIOLOGY Year:2019 | Volume:11 | Issue:42 Page(s): 59-74

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Title

Population dynamics of Caspian sand smelt (Atherina caspia) in Gorgan Bay-southeastern Caspian Sea

Author(s)

Harak Atta Fatemeh | Patimar Rahman | RAEISI HADI | Kordjazi Ziya | Issue Writer Certificate

Keywords

A.capsiaQ1

growthQ2

mortalityQ2

Gorgan bayQ2

Abstract

This study was carried out to investigate population dynamic of Caspian sand smelt (A. caspia) based on a monthly sampling in northern coast of Gorgan bay, between the estuary and canal of Khozeini, during its migration to coastal areas from March to September 2017. A total of 800 samples were collected using beach siene. Length frequency analysis revealed that there is significant difference between abundance of males and females, so that there was no male in some elder length groups. Length-weight relationship was W=0. 007L2. 906 for males and W= 0. 008L2. 846 for females, indicating negative allometric growth for both sexes. After fitting the regression using least square method, the relationship was W=0. 006L3. 002and W= 0. 005L3. 071 for males and females respectively. Electronic length frequency analysis (ELEFAN) using response surface analysis resulted Von Bertalanfy growth equation as for males and for females. growth curves showed that length and weight increments occur up to age of 3+. 3 cohorts were observed for both sexes of the studied population. Natural mortality using Pauly's experimental equation calculated as 1. 640 for males and 1. 274 for females.

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APA: Copy

Harak Atta, Fatemeh, Patimar, Rahman, RAEISI, HADI, & Kordjazi, Ziya. (2019). Population dynamics of Caspian sand smelt (Atherina caspia) in Gorgan Bay-southeastern Caspian Sea. JOURNAL OF MARINE BIOLOGY, 11(42 ), 59-74. SID. https://sid.ir/paper/371109/en

Vancouver: Copy

Harak Atta Fatemeh, Patimar Rahman, RAEISI HADI, Kordjazi Ziya. Population dynamics of Caspian sand smelt (Atherina caspia) in Gorgan Bay-southeastern Caspian Sea. JOURNAL OF MARINE BIOLOGY[Internet]. 2019;11(42 ):59-74. Available from: https://sid.ir/paper/371109/en

IEEE: Copy

Fatemeh Harak Atta, Rahman Patimar, HADI RAEISI, and Ziya Kordjazi, “Population dynamics of Caspian sand smelt (Atherina caspia) in Gorgan Bay-southeastern Caspian Sea,” JOURNAL OF MARINE BIOLOGY, vol. 11, no. 42 , pp. 59–74, 2019, [Online]. Available: https://sid.ir/paper/371109/en

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