Phylogeography of a commercially important reef fish, Lutjanus ehrenbergii, from the coastal waters of the Arabian Peninsula

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Griffiths, Marylka H
Wade, Christopher M
D’Agostino, Daniele
Berumen, Michael L
Burt, John A
DiBattista, Joseph D
Feary, David A
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2024
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The coastal waters of the Arabian Peninsula include a heterogeneous marine region comprising the Persian/Arabian Gulf and Sea of Oman at its northeastern boundary and the Arabian Sea, Gulf of Aden, and Red Sea at its southern and western boundary. The environment within this region shifts from highly variable coral cover and extreme temperatures within the Persian/Arabian Gulf to sparse coral cover, lower summer temperatures, and nutrient-rich upwelling within the Sea of Oman. Within the Gulf of Aden and Red Sea there is high coral cover and warm, stable conditions. We tested for barriers to pelagic dispersal across this peninsula for the commercially important blackspot snapper Lutjanus ehrenbergii using mitochondrial DNA sequences. We found scant evidence for population genetic differences when comparing within northern and southern sections, but instead found strong evidence of genetic differentiation between northern and southern sections, with the Persian/Arabian Gulf and Sea of Oman populations being highly differentiated from the Gulf of Aden and Red Sea populations. Low levels of haplotype sharing between the Persian/Arabian Gulf – Sea of Oman and the Gulf of Aden – Red Sea probably reflect scenarios of historical colonization into these peripheral bodies of water, or the presence of a contemporary ecological barrier preventing further genetic exchange.

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Biological Journal of the Linnean Society

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© 2024 The Linnean Society of London. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited

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This publication has been entered in Griffith Research Online as an advance online version.

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Evolutionary biology

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Griffiths, MH; Wade, CM; D’Agostino, D; Berumen, ML; Burt, JA; DiBattista, JD; Feary, DA, Phylogeography of a commercially important reef fish, Lutjanus ehrenbergii, from the coastal waters of the Arabian Peninsula, Biological Journal of the Linnean Society, 2024, pp. blad170

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