Isoenzymatic variability among five Anopheles species belonging to the Nyssorhynchus and Anopheles subgenera of the Amazon region, Brazil

Memórias do Instituto Oswaldo Cruz
Joselita Maria Mendes dos SantosGloria Alicia Diaz Rodriguez

Abstract

An isoenzymatic comparative analysis of the variability and genetics differentiation among Anopheles species was done in populations of An. (Nys.) intermedius and An. (Ano.) mattogrossensis of the Anopheles subgenus, and of An. darlingi, An. albitarsis and An. triannulatus of the Nyssorhynchus subgenus, with the aim of detecting differences between both subgenera and of estimating the degree of genetic intere specific divergence. Samples from Macap , State of Amap and Janauari Lake, near Manaus, State of Amazonas, were analyzed for eight isoenzymatic loci. Analysis revealed differences in the average number of alleles per locus (1.6-2.3) and heterozygosity (0.060-0.284). However, the proportion of polymorphic loci was the same for An. (Nys.) darlingi, An. (Nys.) triannulatus and An. (Ano.) mattogrossensis (50%), but differed for An. (Nys.) albitarsis (62.5%) and An. (Ano.) intermedius (25%). Only the IDH1 (P > 0.5) locus in all species studied was in Hardy-Weinberg equilibrium. The fixation index demonstrated elevated genetic structuring among species, based on values of Fst = 0.644 and genetic distance (0.344-0.989). Genetic difference was higher between An. (Nys.) triannulatus and An. (Ano.) intermedius (0.989) and smaller b...Continue Reading

References

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Citations

Sep 3, 2010·The American Journal of Tropical Medicine and Hygiene·Helena BrocheroM Ruiz-Garcia
Feb 13, 2007·Memórias do Instituto Oswaldo Cruz·Mauro Toledo MarrelliOsvaldo Marinotti
Aug 31, 2010·Revista Da Sociedade Brasileira De Medicina Tropical·Raquel Borges MoroniJoselita Maria Mendes dos Santos
Sep 9, 2011·Memórias do Instituto Oswaldo Cruz·T F Silva-do-NascimentoR Lourenço-de-Oliveira
Mar 31, 2004·Memórias do Instituto Oswaldo Cruz·C J de Carvalho-Pinto, R Lourenço-de-Oliveira

Related Concepts

Alleles
Metazoa
Anopheles Genus
Insect Vectors
Alloenzymes
Variation (Genetics)
Genes, Insect

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