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272451

Population Dynamics and Stock Assessment of Two Lizardfish Species in the Southern Red Sea Coasts, Foul Bay, Egypt

Article

Last updated: 01 Jan 2025

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Abstract

Lizard fishes are the most abundant demersal fishes inhabiting the Egyptian coasts of the Red Sea. They constitute 30% of the total trawl catch in the northern part (Gulf of Suez) and 26.9% of the total trawl catch in the southern (Foul Bay) part. A stock assessment was done for the pseudocohort of two lizardfish species from Foul Bay. Random samples were collected between October 2013 and November 2021. A total of 1553, and 1320 Saurida undosquamis and S. tumbil specimens were collected, respectively, from Foul Bay. Otoliths were used for age determination and differentiation between the species and sexes. The von Bertalanffy growth parameters (L∞, K, and t0) were estimated for males, females and the whole population of each species. The instantaneous annual rates of total and fishing mortality and subsequently the exploitation rates were estimated and the yield per recruit was analyzed. The stock assessment revealed an over-exploitation situation for lizardfish fisheries in Foul Bay. The relationship between length and weight indicates an isometric growth for S. undosquamis and a positive allometric growth for S. tumbil.

DOI

10.21608/ejabf.2022.272451

Keywords

Red Sea, Foul Bay, Synodontidae, Saurida undosquamis, S. tumbil, Population dynamics, Stock assessment

Authors

First Name

Sahar Fahmy

Last Name

Mehanna

MiddleName

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Orcid

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Volume

26

Article Issue

6

Related Issue

37580

Issue Date

2022-11-01

Receive Date

2022-12-04

Publish Date

2022-11-01

Page Start

299

Page End

311

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_272451.html

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https://ejabf.journals.ekb.eg/service?article_code=272451

Order

18

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

Population Dynamics and Stock Assessment of Two Lizardfish Species in the Southern Red Sea Coasts, Foul Bay, Egypt

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Article

Created At

22 Jan 2023