Genetic relatedness among fish species of Genus Channa using mitochondrial DNA genes

Lakra, W. S.; Goswami, Mukunda; Gopalakrishnan, A; Singh, D. P.; Singh, Apekshita; Nagpure, N. S.

doi:10.1016/j.bse.2010.12.012

Cited by 36 publications

(21 citation statements)

References 17 publications

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“…Similarly, low intraspecific variation has been previously observed in the COI gene sequences among several teleosts (Lakra et al, 2009;Ward et al, 2005). With respect to the COI research of other snakeheads (Lakra et al, 2010), the GC content of the COI region in the present study (49.7%) was comparatively higher. However, these studies focused only on variations in the third coding position, which was found to be similar to that in other fishes (Steinke et al, 2009;Ward et al, 2005).…”

Section: Discussionsupporting

confidence: 59%

Identification of Channa species using the partial cytochrome c oxidase subunit I (COI) gene as a DNA barcoding marker

Zhu

Wang

et al. 2013

Biochemical Systematics and Ecology

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Section: Discussionsupporting

confidence: 59%

Identification of Channa species using the partial cytochrome c oxidase subunit I (COI) gene as a DNA barcoding marker

Zhu

Wang

et al. 2013

Biochemical Systematics and Ecology

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“…Past studies focused on a relatively small number of snakehead species occurring within a particular region [12], [14], [25]. Efforts to characterize the genetic diversity of snakeheads have been restricted [16], [27], [38].…”

Section: Discussionmentioning

confidence: 99%

Calibrating Snakehead Diversity with DNA Barcodes: Expanding Taxonomic Coverage to Enable Identification of Potential and Established Invasive Species

2014

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Detecting and documenting the occurrence of invasive species outside their native range requires tools to support their identification. This can be challenging for taxa with diverse life stages and/or problematic or unresolved morphological taxonomies. DNA barcoding provides a potent method for identifying invasive species, as it allows for species identification at all life stages, including fragmentary remains. It also provides an efficient interim taxonomic framework for quantifying cryptic genetic diversity by parsing barcode sequences into discontinuous haplogroup clusters (typical of reproductively isolated species) and labelling them with unique alphanumeric identifiers. Snakehead fishes are a diverse group of opportunistic predators endemic to Asia and Africa that may potentially pose significant threats as aquatic invasive species. At least three snakehead species (Channa argus, C. maculata, and C. marulius) are thought to have entered North America through the aquarium and live-food fish markets, and have established populations, yet their origins remain unclear. The objectives of this study were to assemble a library of DNA barcode sequences derived from expert identified reference specimens in order to determine the identity and aid invasion pathway analysis of the non-indigenous species found in North America using DNA barcodes. Sequences were obtained from 121 tissue samples representing 25 species and combined with public records from GenBank for a total of 36 putative species, which then partitioned into 49 discrete haplogroups. Multiple divergent clusters were observed within C. gachua, C. marulius, C. punctata and C. striata suggesting the potential presence of cryptic species diversity within these lineages. Our findings demonstrate that DNA barcoding is a valuable tool for species identification in challenging and under-studied taxonomic groups such as snakeheads, and provides a useful framework for inferring invasion pathway analysis.

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“…Both factors may explain the observed polyphyly (sensu Funk & Omland, 2003) among the geographically isolated groups. For C. striata, mtDNA markers had been demonstrated to be informative for higher level phylogenies (Adamson et al, 2010;Lakra et al, 2010;Song, Munian, Rashid, & Bhassu, 2013;Zhu et al, 2013), but a multi-locus approach is necessary for intra-population studies. In this regard, neutral microsatellite markers are better suited for population-level analyses of C. striata as they are more polymorphic due to absence of selective constraints and because they are usually comprised of randomly segregated, non-linked nuclear DNA loci.…”

Section: Introductionmentioning

confidence: 99%

Population genetic structure of Asian snakehead fish (Channa striata) in North Borneo: Implications for conservation of local freshwater biodiversity

Robert

Amit

Sukarno

et al. 2018

Ecological Research

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This study quantified the intra‐specific diversity and characterized the population structure of the Asian snakehead fish, Channa striata in Sabah, North Borneo by determining the variability at six microsatellite loci. Range of genetic diversity across all sampled populations was comparatively moderate in relation to levels reported for C. striata populations occurring elsewhere and the overall Sabah population is highly structured, reflecting isolations across geological and ecological time scales. Two reciprocally monophyletic genodemes were identified along the west and east coast that may have been separated by mountain upthrusts throughout the central region of Sabah. Despite kinship among populations within each genodeme, individual demes were discrete as indicated by significant genotypic differentiation (all P < 0.0014) and low estimates of gene flow between them that likely reflect natural fragmentation of freshwater habitats they occupy. Our findings underline the potential of molecular markers in delimiting and delineating geospatial units of conservation in Sabah. Lowland freshwater ecosystems in the area may comprise two geographically isolated ecoregions, in which each hypothetically harbours biota that have evolved allopatrically. Additionally, identification of biodiversity hotspots within these putative ecoregions can be greatly facilitated with genetic‐level investigations as the rate by which freshwater communities are inventoried has been extremely slow in most habitats.

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Genetic relatedness among fish species of Genus Channa using mitochondrial DNA genes

Cited by 36 publications

References 17 publications

Identification of Channa species using the partial cytochrome c oxidase subunit I (COI) gene as a DNA barcoding marker

Identification of Channa species using the partial cytochrome c oxidase subunit I (COI) gene as a DNA barcoding marker

Calibrating Snakehead Diversity with DNA Barcodes: Expanding Taxonomic Coverage to Enable Identification of Potential and Established Invasive Species

Population genetic structure of Asian snakehead fish (Channa striata) in North Borneo: Implications for conservation of local freshwater biodiversity

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