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Characterization of mitochondrial genome of Indian Ocean blue-spotted maskray, Neotrygon indica and its phylogenetic relationship within Dasyatidae Family.

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Title Characterization of mitochondrial genome of Indian Ocean blue-spotted maskray, Neotrygon indica and its phylogenetic relationship within Dasyatidae Family.
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Subject Elasmobranchs Biogeography Phylogeny Mitochondrial genome Codon bias
 
Description Not Available
The present study characterized complete mitochondrial genome of Blue-spotted maskray, Neotrygon indica and
studied the evolutionary relationship of the species within the Dasyatidae family. The total length of the mito-
genome was 17,974 bp including 37 genes and a non-coding control region. The average frequency of nucleo-
tides in protein-coding genes was A: 29.1 %, T: 30.2 %, G: 13.0 % and C: 27.7 % with AT content of 59.3 %. The values of AT and GC skewness were - 0.018 and - 0.338, espectively. Comparative analyses showed a large
number of average synonymous substitutions per synonymous site (Ks) in gene NADH4 (5.07) followed by
NADH5 (4.72). High values of average number of non-synonymous substitutions per non-synonymous site (Ka)
were observed in genes ATPase8 (0.54) and NADH2 (0.44). Genes NADH4L and NADH2 showed high interspecific
genetic distance values of 0.224 ± 0.001 and 0.213 ± 0.002, respectively. Heat map analysis showed variation in
codon usage among different species of the Dasyatidae family. The phylogenetic tree showed a sister relationship
between the Dasyatinae and the Neotrygoninae subfamilies. Neotrygon indica formed as a sister species to the
clade consisting of N. varidens and N. orientalis. Based on the present results, Neotrygon indica could have diverged from the common ancestor of the two latter in the Plio-Pleistocene. The present study showed distinct charac- teristics of N. indica from its congeners through comparative mitogenomics.
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Date 2023-05-16T03:02:14Z
2023-05-16T03:02:14Z
2022-10-28
 
Type Journal
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/77316
 
Language English
 
Relation Not Available;
 
Publisher Elsevier