Memórias do Instituto Oswaldo Cruz (2013) 108, 605-615

Sascha Naomi McKeon, Marta Moreno, Maria Anise Sallum, Marinete Marins Povoa and Jan Evelyn Conn (2013)
Distinct population structure for co-occurring Anopheles goeldii and Anopheles triannulatus in Amazonian Brazil
Memórias do Instituto Oswaldo Cruz 108 (5), 605-615
Abstract: To evaluate whether environmental heterogeneity contributes to the genetic heterogeneity in Anopheles triannulatus, larval habitat characteristics across the Brazilian states of Roraima and Pará and genetic sequences were examined. A comparison with Anopheles goeldii was utilised to determine whether high genetic diversity was unique to An. triannulatus. Student t test and analysis of variance found no differences in habitat characteristics between the species. Analysis of population structure of An. triannulatus and An. goeldii revealed distinct demographic histories in a largely overlapping geographic range. Cytochrome oxidase I sequence parsimony networks found geographic clustering for both species; however nuclear marker networks depicted An. triannulatus with a more complex history of fragmentation, secondary contact and recent divergence. Evidence of Pleistocene expansions suggests both species are more likely to be genetically structured by geographic and ecological barriers than demography. We hypothesise that niche partitioning is a driving force for diversity, particularly in An. triannulatus.
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Full text of article
Database assignments for author(s): Maria Anice Mureb Sallum, Jan E. Conn

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Anopheles triannulatus		Brazil (NW)
	Anopheles triannulatus		Brazil (NE)
	Anopheles goeldii		Brazil (NW)
	Anopheles goeldii		Brazil (NE)