
Em colônias de Triatoma sordida, Panstrongylus megistus e Rhodnius neglectus, espontaneamente desenvolvidas em galinheiros experimentais, observou-se as condições de desenvolvimento, bem como a variação e a permanência de seus componentes. A colonização e dispersão de T. sordida é favorecida em ambiente aberto resultante da instalação de pastagens com conseqüente proliferação de árvores isoladas e secas. O desenvolvimento de colônias de P. megistus ocorre em ambiente coberto na íntima proximidade de matas residuais, admitindo-se que os anexos domiciliares lhes sirvam de pontos de atração. O R. neglectus revelou certo grau de domiciliação aliado à capacidade de dispersão que lhe permite atravessar distâncias apreciáveis. O primeiro semestre do ano parece incluir a época infestante das colônias de T. sordida revelada pela maior produção de adultos e ninfas de primeiro estádio. O papel de visitantes observado para algumas ninfas dessa espécie, permite supor do poder de dispersão dessas formas.
Spontaneous colonies of Triatoma sordida, Panstrongylus megistus, and Rhodnius neglectus developed in experimental fowlhouses were observed for the conditions for their development and the variation and permanence of their components. T. sordida colonization and dispersal is favored by open areas, mainly pasture lands where many dry trees remain as the result of primitive vegetation destruction. Development of P. megistus occurs near residual forests, and it seems that artificial environment attraction is due mainly to the number of peridomestic dwellings. R. neglectus showed a degree of adaptation to the artificial ecotopes and also great dispersal capacity. More intensive production of adults and first nymphs of T. sordida was observed in the first half-year. This pattern seems to show a period of greater infestation by the bug colonies. The presence of visitor nymphs of T. sordida suggests a dispersal capacity of these forms.
Tripanossomíase americana, Disease Vectors, Panstrongylus geniculatus, Triatoma sordida, Trypanosomiasis, Triatominae^i2^svariat, South American, Animals, Chagas Disease, Triatoma, Triatominae^i2^sdomiciliat, Triatomíneos^i1^sdomicilia, Triatomíneos^i1^svaria, Ecology, Panstrongylus, Panstrongylus megistus, Ecologia, Triatominae^i2^sdisper, Rhodnius, Triatomíneos^i1^sdisper, Triatominae, Rhodnius neglectus, Brazil
Tripanossomíase americana, Disease Vectors, Panstrongylus geniculatus, Triatoma sordida, Trypanosomiasis, Triatominae^i2^svariat, South American, Animals, Chagas Disease, Triatoma, Triatominae^i2^sdomiciliat, Triatomíneos^i1^sdomicilia, Triatomíneos^i1^svaria, Ecology, Panstrongylus, Panstrongylus megistus, Ecologia, Triatominae^i2^sdisper, Rhodnius, Triatomíneos^i1^sdisper, Triatominae, Rhodnius neglectus, Brazil
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