High connectivity in Rastrelliger kanagurta: influence of historical signatures and migratory behaviour inferred from mtDNA cytochrome b

PloS One
Noor Adelyna Mohammed AkibSiti Azizah Mohd Nor

Abstract

Phylogeographic patterns and population structure of the pelagic Indian mackerel, Rastrelliger kanagurta were examined in 23 populations collected from the Indonesian-Malaysian Archipelago (IMA) and the West Indian Ocean (WIO). Despite the vast expanse of the IMA and neighbouring seas, no evidence for geographical structure was evident. An indication that R. kanagurta populations across this region are essentially panmictic. This study also revealed that historical isolation was insufficient for R. kanagurta to attain migration drift equilibrium. Two distinct subpopulations were detected between the WIO and the IMA (and adjacent populations); interpopulation genetic variation was high. A plausible explanation for the genetic differentiation observed between the IMA and WIO regions suggest historical isolation as a result of fluctuations in sea levels during the late Pleistocene. This occurrence resulted in the evolution of a phylogeographic break for this species to the north of the Andaman Sea.

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Citations

Aug 4, 2020·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Noorul-Azliana JamaludinSiti-Azizah Mohd Nor
Jan 3, 2021·International Journal of Biological Macromolecules·Noora BarzkarReza Nahavandi
Jan 8, 2021·Applied Biochemistry and Biotechnology·Noora BarzkarMahmoud Hafezieh

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PCR

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