Mitochondrial DNA variation in natural populations of endangered Indian Feather-Back Fish, Chitala chitala

Abstract

Genetic variation at mitochondrial cytochrome b (cyt b) and D-loop region reveals the evidence of population sub-structuring in Indian populations of highly endangered primitive feather-back fish Chitala chitala. Samples collected through commercial catches from eight riverine populations from different geographical locations of India were analyzed for cyt b region (307 bp) and D-loop region (636-716 bp). The sequences of the both the mitochondrial regions revealed high haplotype diversity and low nucleotide diversity. The patterns of genetic diversity, haplotypes networks clearly indicated two distinct mitochondrial lineages and mismatch distribution strongly suggest a historical influence on the genetic structure of C. chitala populations. The baseline information on genetic variation and the evidence of population sub-structuring generated from this study would be useful for planning effective strategies for conservation and rehabilitation of this highly endangered species.

Molecular insights into the genetic and haplotype diversity among four populations of Catla catla from Madhya Pradesh revealed through mtDNA cyto b gene sequences

“…In the present investigation, 20 genotypes of Catla catla and obtained single band of gene interest with molecular weight 375 bp which shows that the cyto b gene having good molecular weight when compared with Mandal [25]. Mean haplotype diversity ( Hd ) was found to be minimum 0.28571 in Fish Federation Pond population and variance of HD was 0.04351.…”

Genetic Diversity of the Endangered Mekong Giant Catfish, Striped Catfish, and Their Hybrids From Thailand

“…This might be due to difference of mtDNA studied regions which higher mutation rate in this study than those previous reports (Nicolas et al, 2012). However, compared to other catfish (Nakagawa, Seki, Ishikawa, & Watanabe, 2016;Ochoa et al, 2015;Xu, Huang, Zeng, Li, & Peng, 2017;Zhong et al, 2013) and freshwater fish species (Hou et al, 2014;Kenthao, Wangsomnuk, & Jearranaipreprame, 2016;Song, Hou, Zhang, Yue, & Song, 2014;Swain et al, 2014), P. gigas, P. hypophthalmus, and their hybrids exhibited lower genetic diversity, which was also lower than those of other endangered and critically endangered fish species (Alves, Coelho, Collares-Pereira, & Coelho, 2001;Mandal et al, 2012;Wang et al, 2016).…”

Genetic divergence and gene flow in three populations of Notopterus notopterus (Pallas, 1769), Madhya Pradesh

“…Overall proportion of estimated gene flow (Nm) and relative differentiation (GST) across the primers studied in N. notopterus population were 1.6010 and 0.2380 respectively (Table 2). However, significant genetic differentiation was not detected in Chitala chitala on Ganga river [22]. Similarly, differentiation of haplotypes in L. rohita was significant for genetic structuring of 09 populations of 09 Indian rivers [23].…”