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305278

Population Dynamics and Assessment of the Snubnose Emperor Lethrinus borbonicus (L. bungus) from the Gulf of Aqaba, Egypt

Article

Last updated: 01 Jan 2025

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Abstract

Knowledge about the life history of exploited species is fundamental to improving fisheries management. The population dynamics and status of the snubnose emperor (Lethrinus borbonicus) in the Gulf of Aqaba, Egypt were assessed using the size at-age data. The whole sagittal otoliths were characterized by alternating translucent and opaque bands that were validated as annuli. Comparisons of age and growth characteristics recorded no significant differences (P>0.05) between the sexes. The von Bertalanffy growth parameters for pooled data were K= 0.476/year, L∞= 35.80 cm TL and t0= -0.23 year. The mean size at which the fish attained sexual maturity for L. borbonicus was 20.75 cm TL. The mean size at first capture was  24.05 cm,  which was greater than the size at first sexual maturity indicating the healthy status of L. borbonicus stock in the Gulf of Aqaba. The fishing mortality rate for L. borbonicus (0.70/yr) was substantially greater than the target Fopt (0.36/yr) and limit Flimit (0.48/yr) estimates. The snubnose emperor stock was in its optimum situation as the current exploitation rate was 0.49/yr. The results of the study are important to fisheries management authorities in the region since they will contribute to planning the regional fishery management policies in Egypt.

DOI

10.21608/ejabf.2023.305278

Keywords

Gulf of Aqaba, Emperor, lethrinids, Life history, Demographic structure, Fisheries management

Authors

First Name

Sahar F.

Last Name

Mehanna

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Orcid

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Volume

27

Article Issue

3

Related Issue

41228

Issue Date

2023-05-01

Receive Date

2023-06-25

Publish Date

2023-05-01

Page Start

643

Page End

654

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_305278.html

Detail API

https://ejabf.journals.ekb.eg/service?article_code=305278

Order

35

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 Assessment of the Snubnose Emperor Lethrinus borbonicus (L. bungus) from the Gulf of Aqaba, Egypt

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Article

Created At

23 Dec 2024