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Molecular characterization of Rhipicephalus microplus in Andaman and Nicobar Islands, India: an insight into genetic assemblages.

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Title Molecular characterization of Rhipicephalus microplus in Andaman and Nicobar Islands, India: an insight into genetic assemblages.
Not Available
 
Creator De AK, Bhattacharya D, Sawhney S, Bala PA, Sunder J, Sujatha T, Ponraj P and Chakurkar EB
 
Subject molecular characterization; COXI gene; Andaman and Nicobar Islands; Rhipicephalus microplus.
 
Description Not Available
The tick, Rhipicephalus microplus is considered as the most notorious ectoparasite of veterinary importance in tropical and
sub-tropical regions of the world. The present study deals with the molecular characterization of R. microplus in different regions of
Andaman and Nicobar Islands using sequence information of mitochondrial cytochrome C oxidase subunit I (COX1) and their phylogenetic
relationship with other Indian R. microplus genotypes. DNA polymorphism study identified a total of eight haplotypes with haplotype
diversity of 0.909 ± 0.065 and nucleotide diversity of 0.01911 ± 0.00493. Currently, R. microplus complex consists of five taxa; R.
microplus clade A sensu Burger et al. (2014), R. microplus clade B sensu Burger et al. (2014), R. microplus clade C sensu Low et al.
(2015), R. australis and R. annulatus. Phylogenetic analysis revealed the presence of two clades (clade A and clade C) of R. microplus in
Andaman and Nicobar isolates; Nicobar isolates belonged to clade A whereas Andaman isolates belonged to clade C of R. microplus
complex. All the other Indian sequences retrieved from GenBank belonged to clade C of R. microplus complex. Andaman isolates under
clade C of R. microplus were phylogenetically distinct from Indian isolates, which indicates independent speciation under isolated island
milieu. In Indian isolates, no host-specific or geographical location-specific sub-clustering was observed which indicates the species
jumping potential of the R. microplus tick. Therefore, this study indicated the presence of two different genetic makeup of R. microplus
complex in two areas of the Andaman and Nicobar archipelago separated by a natural geographical barrier. This indicates presence of two
different founding populations of ticks, one in the south and north-middle Andaman and the other in Nicobar Island.
Not Available
 
Date 2023-12-18T11:26:51Z
2023-12-18T11:26:51Z
2002-08-10
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/81059
 
Language English
 
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Publisher Not Available