Low genetic diversity and absence of population differentiation of hilsa (Tenualosa ilisha) revealed by mitochondrial DNA cytochrome b region in Ganga and Hooghly rivers

  • MP Brahmane
  • SN Kundu
  • MK Das
  • AP Sharma

Abstract

We investigated the mtDNA cytochrome b based genetic structure of anadromous clupeid hilsa, Tenualosa ilisha, from the rivers Ganga and Hooghly. Six different haplotypes were observed, in sample size of 240, with a single dominant haplotype present in both rivers. Analysis of molecular variance (AMOVA) of Ganga and Hooghly populations does not suggest existence of population structuring in hilsa. AMOVA conducted on the whole population from Ganga and Hooghly suggested existence of a single population, migrating to Ganga and Hooghly rivers through the estuaries for spawning and breeding.

Keywords: Hilsa, Tenualosa ilisha, Ganga, Hooghly, Bay of Bengal, West Bengal, India, mtDNA cytochrome b

African Journal of Biotechnology Vol. 12(22), pp. 3383-3389

Author Biographies

MP Brahmane
National Institute of Abiotic Stress Management (ICAR), Baramati, India; Department of Zoology, University of Kalyani, Kalyani-741235, West Bengal, India
SN Kundu
Department of Zoology, University of Kalyani, Kalyani-741235, West Bengal, India
MK Das
Central Inland Fisheries Research Institute, Barrackpore, Kolkata-700120, West Bengal, India
AP Sharma
Central Inland Fisheries Research Institute, Barrackpore, Kolkata-700120, West Bengal, India
Published
2016-03-15
Section
Articles

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eISSN: 1684-5315