Phosphoglucomutase and trehalase isoenzymes of Venezuelan Simulium vectors of Onchocerca volvulus

Abstract

Phosphoglucomutase (PGM) and trehalase (Tre) isoenzymes of five species of Simulium blackflies (Diptera: Simuliidae), vectors of onchocerciasis in Venezuela, were investigated by means of a portable electrophoresis field kit. Tre differed between S. incrustatum and S. oyapockense s.l. Electrophoretic variation of Tre in other members of the S. amazonicum and S. incrustatum groups merit further investigation. PGM appears to be more useful for separating populations within species complexes. Multiple populations and/or seasonal changes in population structure of S. guianense s.l., S. exiguum s.l. and S. metallicum s.l. were inferred from elecrophoretic variation of PGM.

Isozyme variation in four species of the Simulium perflavum species group (Diptera: Simuliidae) from the Brazilian Amazon

“…In the genus Simulium, several species have been studied using these markers (May et al 1977;Petersen, 1982;Snyder, 1982;Snyder and Linton, 1983;Mebrahtu et al, 1987;Charalambous et al, 1993;Davies et al, 2000). However, relatively few loci were interpreted in most of the studies (Mebrahtu et al, 1987;Charalambous et al, 1993;Davies et al, 2000).…”