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339761

Population Dynamics and Stock Assessment of Deep-Water Red Shrimps Aristaeomorpha foliacea and Aristeus antennatus in the Southeastern Mediterranean Waters

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Last updated: 01 Jan 2025

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Abstract

The stock status of the two deep-water red shrimps (DWRS), Aristaeomorpha foliacea (ARS) and Aristeus antennatus (ARA) in the Southeastern Mediterranean (the Egyptian Mediterranean waters) was assessed. The length-based spawning potential ratio (LB-SPR) model was used for the assessment. The input data depended on a scheme of data collection for two years after identifying the fishing grounds of the DWRS. The von Bertalanffy growth parameters were estimated by analyzing the length frequency distributions, where the growth coefficient (K) = 0.41 year-1, the asymptote carapace length (Lāˆž)=65.01 mm, and the theoretical age at length 0 (t0)= -0.12 year for ARS, while they were K= 0.35 year-1, Lāˆž= 57.51 mm, and t0= -0.50 year for ARA. The average of natural mortality vector (M) was 0.8 for ARS, and 0.77 for ARA. Carapace length at 50% sexual maturity (L50) was 32.85 and 26.31mm for females of ARS and ARA, respectively. The mean spawning potential ratios SPR (0.062 and 0.17) and the mean ratios of fishing mortality to natural mortality F/M (2.91 and 1.47) for ARS and ARA, respectively, revealed that the two stocks are overexploited. In the context of fisheries sustainable exploitation, a management plan is therefore needed to regulate the fisheries of the two studied species in the Egyptian Mediterranean waters.

DOI

10.21608/ejabf.2024.339761

Keywords

Aristaeomorpha foliacea, Aristeus antennatus, Egyptian Mediterranean, Length-based assessment, Data-limited fisheries

Authors

First Name

Hatem H.

Last Name

Mahmoud et al.

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Volume

28

Article Issue

1

Related Issue

45296

Issue Date

2024-01-01

Receive Date

2024-02-04

Publish Date

2024-01-01

Page Start

1,093

Page End

1,100

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_339761.html

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https://ejabf.journals.ekb.eg/service?article_code=339761

Order

33

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Original Article

Type Code

103

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Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

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

MainTitle

Population Dynamics and Stock Assessment of Deep-Water Red Shrimps Aristaeomorpha foliacea and Aristeus antennatus in the Southeastern Mediterranean Waters

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Article

Created At

23 Dec 2024