Abstract：
:Anopheles annularis is one of the major vectors of malaria in Odisha, India. The present study was undertaken to determine the vectorial capacity and assess the genetic diversity of An. annularis collected from different endemic regions of Odisha. Mosquitoes were collected from thirteen endemic districts using standard entomological collection methods from 2009 to 2011. Sibling species of An. annularis were identified by PCR-RFLP and sequencing of D3 region of 28S ribosomal DNA (rDNA) region. Plasmodium falciparum (Pf) sporozoite rate and human blood fed percentage (HBF) were estimated by multiplex PCR using Pf and human specific primers. Genetic diversity of An. annularis was estimated by ISSR markers. Out of 1647 An. annularis collected, 1353 (82.15%) were collected by mechanical aspirators and 294 (17.85%) by light trap. 49 (2.97%) were positive for human blood and 18 (1.09%) were positive for Pf sporozoite. PCR-RFLP and sequencing analyses detected only An annularis A in the study areas. Overall genetic differentiation among An. annularis populations was moderate (FST=0.048) and showed significant correlation between genetic distance and geographic distance (r=0.882; P<0.05). Angul population proved to be genetically unique and was highly divergent FST>0.110) from other populations, suggesting low gene flow between them. The study indicated that only An. annularis A was found in Odisha with potential vectorial capacity that can play a major role in malaria transmission. ISSR markers proved to be useful molecular tools to evaluate genetic variability in An. annularis populations.
journal_name
Acta Tropjournal_title
Acta tropicaauthors
Das B,Patra AP,Das M,Mahapatra N,Tripathy H,Kar SK,Hazra RKdoi
10.1016/j.actatropica.2014.05.002subject
Has Abstractpub_date
2014-09-01 00:00:00pages
130-9eissn
0001-706Xissn
1873-6254pii
S0001-706X(14)00167-3journal_volume
137pub_type
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