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1.
Asunción; EFACIM; dic; 1991. 268-272 p. ilus, tab.
Monography in Spanish | LILACS, BDNPAR | ID: biblio-1017962

ABSTRACT

Chromosome observations of triatomine bugs known as medically important vectors of American tripanosomiasis (Chagas' disease) were attempted. We demonstrated by the C-band technique that brazilian strain of Triatoma infestans includes at least three cytotypes in terms of constitutive heterochromatin polymorphism. We found cytological evidence that there is a significant difference in cytotype frequencies betweenobserved values and expected ones from Hardy-Weinberg principle. This evidence suggests a genetic regulation or an incompatibility mechanism between cytotypes, which will serve as hopeful cytological markers for vector control


Subject(s)
Chagas Disease , Heterochromatin , Triatoma , Trypanosomiasis
3.
Bol. Dir. Malariol. Saneam. Ambient ; 26(1/4): 61-4, mar.-dic. 1986. ilus
Article in Spanish | LILACS | ID: lil-71586

ABSTRACT

Se describe Simulium parimaensis de una hembra criada de pupa, la cual fue colectada en el río Aloquitetä, Sierra de Parima, T.F. Amazonas, Venezuela. El imago se caracteriza por el color negro del escudo y por el promontorio de dientes fuertemente quitinizados de la bucofaringe. La pupa tiene de 18 a 20 filamentos respiratorios a cada lado, carácter que la separa de las otras especies del subgénero Inaequalium Cóscaron y Wygodzinsky, 1984, las cuales tienen apenas seis filamentos


Subject(s)
Animals , Diptera/classification , Simuliidae
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