Differentiation and genetic variability in natural populations of Anopheles (N.) triannulatus (Neiva& Pinto, 1922) of Brazilian Amazonia

Brazilian Journal of Biology

J. M. M. Santos¹  J. F. Maia¹  W. P. Tadei¹ 

[1] ,Instituto Nacional de Pesquisas da AmazôniaManaus AM ,Brazil

关键词: Anopheles triannulatus;    isozymes;    genetic of population;    malaria;    Anopheles triannulatus;    isoenzimas;    genética de população;    malária;   

DOI  :  10.1590/S1519-69842004000200019

来源: SciELO

【 摘 要 】

Populations of Anopheles triannulatus from Macapá (AP), Aripuanã (MT), Ji-Paraná (RO), and Manaus-Janauari Lake (AM) were studied using 16 enzymatic loci. The results of the isozyme analysis showed that the population of Macapá presented higher polymorphism (56.3%). The lowest variability was observed in the population of Manaus (p = 25.0; Ho = 0.077 ± 0.046). The results of Wright's F statistics showed unbalance due to excess of homozygotes (Fis > Fst), denoting a certain intrapopulational differentiation. Although the populations are genetically very close (D = 0.003 - 0.052), the dendrogram separates the populations in two groups: Macapá separated from that of Manaus, Ji-Paraná, and Aripuanã. This result may suggest a reduction in the genic flow, which possibly had some influence in the substructuration of the populations.

【 授权许可】

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