Phylogeography and population structure of Tenualosa toli inferred from Cytochrome b mitochondrial DNA fragment

Aim : Shad fish of genus Tenualosa subfamily Alosinae (shads) family Clupeidae, are commercially and culturally important estuarine fish in many Asian countries, especially in Sarawak. In this study, the phylogenetics of three species from the genus Tenualosa (Tenualosa toli, Tenualosa macrura and T...

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Bibliographic Details
Published in:Journal of environmental biology 2018-09, Vol.39 (5(SI)), p.895-906
Main Authors: Puvanasundram, P., Esa, Y.B., Rahim, K.A.A., Amin, S.M.N.
Format: Article
Language:English
Subjects:
Base pairs
Bioinformatics
Commercial fishing
Cytochrome
Cytochrome b
Cytochromes
Deoxyribonucleic acid
Divergence
DNA
Environmental science
Estuaries
Fish
Fisheries
Fishing
Haplotypes
Identification
Mitochondrial DNA
Morphology
Multiculturalism & pluralism
Nucleotide sequence
Overfishing
Phylogenetics
Phylogeny
Phylogeography
Polymorphism
Population
Population number
Population structure
Rivers
Statistical analysis
Studies
Taxonomy
Tenualosa
Tenualosa macrura
Tenualosa toli
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Summary:Aim : Shad fish of genus Tenualosa subfamily Alosinae (shads) family Clupeidae, are commercially and culturally important estuarine fish in many Asian countries, especially in Sarawak. In this study, the phylogenetics of three species from the genus Tenualosa (Tenualosa toli, Tenualosa macrura and Tenualosa ilisha) was determined. Methodolgy: Sequence analysis of 910 base pairs of Cytochrome b gene were conducted on the samples of indigenous T.toli (N=111) and T. macrura (N=24), which were collected from Sarawak including the samples ofnon-native T ilisha (N=4) obtainedfrom Bangladesh. Results : A total of 28 haplotypes were found with T toli producing 15 haplotypes, where 13 haplotypes were unique haplotypes while 2 shared haplotypes among the 6 populations. Interpretation: Phylogenetic analysis supported the monophyletic status between the three shad species. The highest intraspecific genetic divergences were recorded between imported samples and samples from other localities. There is evidence of overfishing and recently occurred bottleneck events which led to a population size expansion of T. toli, especially in Sebuyau, Daro and Mukah.
ISSN:0254-8704
2394-0379
DOI:10.22438/jeb/39/5(SI)/26