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18591

Conservation of Acacia tortilis subsp. raddiana Populations in Southern Sinai, Egypt I- Genetic Diversity and Structure

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Last updated: 03 Jan 2025

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Abstract

Acacia tortilis (Fabaceae) provides food and shelter for desert animals and is a major source of livestock food and firewood for the native Bedouin people in Southern Sinai, Egypt. High mortality of established individuals and low juvenile recruitment has been reported in recent years. As a result, this once common tree has experienced local extinction and is now a species of conservation concern in the region. Sixteen allozyme loci were used to examine regional genetic diversity within and among twelve natural populations of A. tortilis selected to represent its geographic range in two large wadis in Southern Sinai, Egypt. The results showed that regional genetic diversity for A. tortilis (He = 0.213) is high compared not only to estimates for other tropical acacias but for plants generally. The majority (96%) of the genetic variation occurs within populations indicating that historically this species experienced high rates of gene flow over the geographic scale sampled. A UPGMA phenogram didn't match genetic distance among populations with their geographic relationships. High historical rates of gene flow and the recent fragmentation of once more continuous populations coupled with the longevity of these trees could explain the results obtained.

Keywords

Acacia tortilis, Sinai, conservation genetics, Genetic diversity

Authors

First Name

Mohamed

Last Name

Zaghloul

MiddleName

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Affiliation

Botany Department, Faculty of Science, Suez Canal University, Ismailia, Egypt

Email

zaghloul_mohamed@yahoo.com

City

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Orcid

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First Name

James

Last Name

Hamrick

MiddleName

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Affiliation

Plant Biology Department, University of Georgia, Athens, Georgia, USA

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City

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Orcid

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First Name

Abd El-Raouf

Last Name

Moustafa

MiddleName

-

Affiliation

Botany Department, Faculty of Science, Suez Canal University, 41522 Ismailia, Egypt

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Orcid

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Volume

2

Article Issue

1

Related Issue

3874

Issue Date

2007-01-01

Receive Date

2018-11-08

Publish Date

2007-01-01

Page Start

51

Page End

60

Print ISSN

1687-5052

Online ISSN

2090-2786

Link

https://cat.journals.ekb.eg/article_18591.html

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https://cat.journals.ekb.eg/service?article_code=18591

Order

7

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Original Article

Type Code

644

Publication Type

Journal

Publication Title

Catrina: The International Journal of Environmental Sciences

Publication Link

https://cat.journals.ekb.eg/

MainTitle

Conservation of Acacia tortilis subsp. raddiana Populations in Southern Sinai, Egypt I- Genetic Diversity and Structure

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Article

Created At

22 Jan 2023