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Some biological and fisheries studies on the Lessepsian migrant shrimp scad Alepes djedaba from the Eastern Mediterranean coast of Egypt.

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Last updated: 01 Jan 2025

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Abstract

The Lessepsian migrant shrimp scad Alepes djedaba is an important component of the purse seine fishery in the Egyptian Mediterranean Sea. This study aimed to investigate the state of the fishery of A. djedaba. A total of 1391 specimens were collected from two landing sites in the Eastern Mediterranean (Damietta and Port Said) from January to December 2019. The estimated length-weight relationship (W= 0.003 L3.419) showed positive allometric growth. Aging by otolith readings was corroborated by length-frequency analysis and the results revealed three age groups with the second age group is dominant in the catch. The von Bertlanffy growth parameters estimated at L = 29.21 cm, K= 0.301, W= 307.4 g and to= -1.2.  The growth performance index was ɸ=2.41. The yield and biomass per recruit analysis showed that the current rate of fishing mortality (Fcurr = 0.872) was higher than the estimated biological reference points (Fmax, F0.1 and F0.5). The percentage of the current biomass per recruit to the unexploited level was 20.76% which implied recruitment overfishing. The management measures should include reduction of fishing effort and controlling fishing gear.

DOI

10.21608/ejabf.2021.183818

Keywords

age and growth, mortalities, yield per recruit, Alepes djedaba, Mediterranean Sea

Authors

First Name

El Ganainy

Last Name

A. A. et al.

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Volume

25

Article Issue

3

Related Issue

25018

Issue Date

2021-05-01

Receive Date

2021-07-13

Publish Date

2021-05-01

Page Start

939

Page End

954

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_183818.html

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https://ejabf.journals.ekb.eg/service?article_code=183818

Order

58

Type

Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

MainTitle

Some biological and fisheries studies on the Lessepsian migrant shrimp scad Alepes djedaba from the Eastern Mediterranean coast of Egypt.

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Article

Created At

22 Jan 2023