The cuticular hydrocarbons of the Triatoma sordida species subcomplex (Hemiptera: Reduviidae)

The cuticular hydrocarbons of the Triatoma sordida subcomplex (Hemiptera: Reduviidae: Triatominae) were ana-lysed by gas chromatography and their structures identified by mass spectrometry. They comprised mostly n-alkanes and methyl-branched alkanes with one-four methyl substitutions. n-alkanes cons...

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Published in:Memórias do Instituto Oswaldo Cruz 2013-09, Vol.108 (6), p.778-784
Main Authors: Calderon-Fernandez, Gustavo Mario, Juarez, Marta Patricia
Format: Article
Language:English
Subjects:
Alkanes - analysis
Analysis of Variance
Animals
cuticle hydrocarbons
Female
Gas Chromatography-Mass Spectrometry - methods
Hydrocarbons - isolation & purification
Lipids - isolation & purification
Male
mass spectrometry
PARASITOLOGY
Triatoma - chemistry
Triatoma garciabesi
Triatoma guasayana
Triatoma patagonica
TROPICAL MEDICINE
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Juarez, Marta Patricia
description The cuticular hydrocarbons of the Triatoma sordida subcomplex (Hemiptera: Reduviidae: Triatominae) were ana-lysed by gas chromatography and their structures identified by mass spectrometry. They comprised mostly n-alkanes and methyl-branched alkanes with one-four methyl substitutions. n-alkanes consisted of a homologous series from C21-C33 and represented 33-45% of the hydrocarbon fraction; n-C29 was the major component. Methyl-branched alkanes showed alkyl chains from C24-C43. High molecular weight dimethyl and trimethylalkanes (from C35-C39) represented most of the methyl-branched fraction. A few tetramethylalkanes were also detected, comprising mostly even-numbered chains. Several components such as odd-numbered 3-methylalkanes, dimethylalkanes and trimethylalkanes of C37 and C39 showed patterns of variation that allowed the differentiation of the species and populations studied. Triatoma guasayana and Triatoma patagonica showed the most distinct hydrocarbon patterns within the subcomplex. The T. sordida populations from Brazil and Argentina showed significantly different hydrocarbon profiles that posed concerns regarding the homogeneity of the species. Triatoma garciabesi had a more complex hydrocarbon pattern, but it shared some similarity with T. sordida. The quantitative and qualitative variations in the cuticular hydrocarbons may help to elucidate the relationships between species and populations of this insect group.
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Triatoma garciabesi had a more complex hydrocarbon pattern, but it shared some similarity with T. sordida. 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subjects Alkanes - analysis
Analysis of Variance
Animals
cuticle hydrocarbons
Female
Gas Chromatography-Mass Spectrometry - methods
Hydrocarbons - isolation & purification
Lipids - isolation & purification
Male
mass spectrometry
PARASITOLOGY
Triatoma - chemistry
Triatoma garciabesi
Triatoma guasayana
Triatoma patagonica
TROPICAL MEDICINE
title The cuticular hydrocarbons of the Triatoma sordida species subcomplex (Hemiptera: Reduviidae)
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