Premium
Identification of members of the Simulium ochraceum species complex in the three onchocerciasis foci in Mexico
Author(s) -
MILLEST A. L.
Publication year - 1992
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.1992.tb00030.x
Subject(s) - polytene chromosome , biology , onchocerciasis , larva , zoology , cytotaxonomy , identification (biology) , simulium , ecology , karyotype , drosophila melanogaster , genetics , immunology , chromosome , gene
. Larval collections of Simulium ochraceum Walker (Diptera: Simuliidae) were made in a variety of streams in the three onchocerciasis foci in Mexico and identified by cytotaxonomic criteria, based on the banding pattern of polytene chromosomes in larval salivary gland nucleii. S.ochracrum cytotype A was found in the Soconusco focus, cytotype B in the Oaxaca focus and cytotype C (not previously recorded in Mexico) in the Chamula focus. Attempts to analyse chromosomes of adult specimens were unsuccessful. A preliminary study of the cuticular hydrocarbons of adult specimens by gas liquid chromatography provided evidence that this technique may be suitable for separating the cytotypes.