Population dynamics of Liza abu, (Liza abu Heckel, 1843) in Shadegan wetland

Subject Areas : Coastal Management

Seyedahmadreza Hashemi ¹ , Aliakbar Hedayati ² , Rasoul Ghorbani ³ , Ahmadreza Jabaleh ⁴

1 - Assistant Professor, Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Chabahar, Iran.
2 - Associate Professor, Production and Operation, Faculty of Fisheries and Environment, University of Agriculture and Natural Resources, Gorgan, Iran.
3 - 2- Associate Professor, Production and Operation, Faculty of Fisheries and Environment, University of Agriculture and Natural Resources, Gorgan, Iran.
4 - PhD in Fisheries, Production and Operation, Faculty of Fisheries and Environment, University of Agriculture and Natural Resources, Gorgan, Iran *(Corresponding Author).

Received: 1970-01-01 Accepted : 1970-01-01 Published : 1970-01-01

Keywords: Liza Abu, Growth, Mortality parameters, Length-weight relationship,

Abstract :

Background and Objective: In this study, the parameters related to growth and mortality of Liza abu in Shadegan wetland were studied. Method: The sampling was carried out monthly to determine the length and weight at five stations including Douragh (Mahshahr), Rogbeh, Khoorosi, Salmaneh and Ateish. During implementation of the project from March 2013 to February 2014, a total of 493 fish were caught and transferred monthly to the laboratory for biometric analysis. Finding:The average lengths (±SD) in millimeters for male (20±138) and female (18±138) as well as the average weights (±SD) in grams for male (13±33) and female (14±33) were obtained respectively. Discussion and Conclusion: The length-weight relationships for female (R2=0.89, W=0.00001L3.33, N=282) and male (R2=0.88, W=0.00001L 2.98, N=195) Liza abu were obtained. The values of length (247, 220 and 247 mm), growth parameters (0.56, 0.74, and 0.66), total mortality (2.83, 2.90 and 2.98), natural mortality (1.22, 1.36 and 1.22) and fishing mortality (1.73, 1.36 and 1.76)  for male, female and total were calculated, respectively. Considering the growth and mortality parameters obtained from American fisheries society (AFS) indices, this speciesis classified as a low vulnerable group

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