Research Article

Assessment of Genetic Structure in Wild Populations of Panulirus homarus (Linnaeus, 1758) across the South Coast of Sri Lanka Inferred from Mitochondrial DNA Sequences  

J.D.M Senevirathna1 , D.H.N. Munasinghe2 , Peter B. Mather3
1 Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka
2 Department of Zoology, Faculty of Science, University of Ruhuna, Matara, Sri Lanka
3 School of Earth, Environmental and Biological Sciences, Science and Engineering Faculty, Queensland University of Technology, Australia
Author    Correspondence author
International Journal of Marine Science, 2016, Vol. 6, No. 6   doi: 10.5376/ijms.2016.06.0006
Received: 28 Oct., 2015    Accepted: 20 Jan., 2016    Published: 16 Mar., 2016
© 2016 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

 Senevirathna J.D.M., Munasinghe D.H.N., and Mather P. B., 2016, Assessment of Genetic Structure in Wild Populations of Panulirus homarus (Linnaeus, 1758) across the South Coast of Sri Lanka Inferred from Mitochondrial DNA Sequences, International Journal of Marine Science, 6(6):1-9

Abstract
Scalloped spiny lobster (Panulirus homarus, Palinuridae) is an economically and ecologically important food species. Population structure of the scalloped spiny lobster across the southern coast of Sri Lanka (SCSL) (in Indian Ocean) was investigated using mitochondrial DNA (mtDNA) markers. Four sites belonging two regions were sampled (Hikkaduwa, Weligama in the southwest and Godawaya, Kirinda in the southeast) and DNA was isolated from tissues of pereiopod and used for PCR amplification. Genetic variation in DNA sequences were examined for two mtDNA gene regions; Cytochrome Oxidase I (COI) and Cytochrome B (CytB). High levels of haplotype diversity and nucleotide diversity were detected in all populations and estimated average fixation index (-0.026285 (p< 0.01)) indicated essential homogeneity among population. Results of AMOVA analysis confirmed an absence of signi?cant population structure among sites. Tests of neutral evolution and analysis of mismatch distribution suggested that P. homarus populations across the SCSL might have experienced a recent population expansion. Information emerged from the current study could be utilized when people design appropriate management strategies for conserving this vital wild marine resource.
Keywords
mtDNA; COI; CytB; Population genetics; Spiny lobster; Indian Ocean
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