INIBIOLP   05426
INSTITUTO DE INVESTIGACIONES BIOQUIMICAS DE LA PLATA "PROF. DR. RODOLFO R. BRENNER"
Unidad Ejecutora - UE
artículos
Título:
Cuticular hydrocarbon pattern as a chemotaxonomy marker to assess intraspecific variability in Triatoma infestans, a major vector of Chagas disease
Autor/es:
CALDERÓN FERNÁNDEZ GUSTAVO M; GIROTTI JUAN R.; JUÁREZ M. PATRICIA
Revista:
MEDICAL AND VETERINARY ENTOMOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2011 p. 1 - 9
ISSN:
0269-283X
Resumen:
Abstract. Triatoma infestans Klug (Hemiptera: Reduviidae) populations were
sampled in various localities throughout most of the species geographic range of
distribution in Argentina, Bolivia, Paraguay and Peru. In order to contribute to
understanding of the diversity and population structure of this major vector of
Chagas disease, cuticular hydrocarbon (CHC) profiles were analysed by capillary
gas chromatography and variations evaluated by statistical methods of classification
and ordination. High levels of intrapopulation variation were detected, along with low
levels of variability among populations. Based on relative amounts of the major oddnumbered
straight-chain hydrocarbons n-C27 to n-C33, two hydrocarbon phenotypes
were evident, unequally distributed along the species geographic range. Analysis of
CHC patterns showed that T. infestans populations segregate into two major groups
consisting of an Andean group, which comprises specimens from Peru and most parts
of Bolivia, and a non-Andean group, which includes all specimens from Argentina
and Paraguay, together with those from Tarija (Bolivia). Pyrethroid-resistant and -
susceptible specimens were differentiated based on relative amounts of some straight
and monomethyl-branched hydrocarbon components.Triatoma infestans Klug (Hemiptera: Reduviidae) populations were
sampled in various localities throughout most of the species geographic range of
distribution in Argentina, Bolivia, Paraguay and Peru. In order to contribute to
understanding of the diversity and population structure of this major vector of
Chagas disease, cuticular hydrocarbon (CHC) profiles were analysed by capillary
gas chromatography and variations evaluated by statistical methods of classification
and ordination. High levels of intrapopulation variation were detected, along with low
levels of variability among populations. Based on relative amounts of the major oddnumbered
straight-chain hydrocarbons n-C27 to n-C33, two hydrocarbon phenotypes
were evident, unequally distributed along the species geographic range. Analysis of
CHC patterns showed that T. infestans populations segregate into two major groups
consisting of an Andean group, which comprises specimens from Peru and most parts
of Bolivia, and a non-Andean group, which includes all specimens from Argentina
and Paraguay, together with those from Tarija (Bolivia). Pyrethroid-resistant and -
susceptible specimens were differentiated based on relative amounts of some straight
and monomethyl-branched hydrocarbon components.n-C27 to n-C33, two hydrocarbon phenotypes
were evident, unequally distributed along the species geographic range. Analysis of
CHC patterns showed that T. infestans populations segregate into two major groups
consisting of an Andean group, which comprises specimens from Peru and most parts
of Bolivia, and a non-Andean group, which includes all specimens from Argentina
and Paraguay, together with those from Tarija (Bolivia). Pyrethroid-resistant and -
susceptible specimens were differentiated based on relative amounts of some straight
and monomethyl-branched hydrocarbon components.T. infestans populations segregate into two major groups
consisting of an Andean group, which comprises specimens from Peru and most parts
of Bolivia, and a non-Andean group, which includes all specimens from Argentina
and Paraguay, together with those from Tarija (Bolivia). Pyrethroid-resistant and -
susceptible specimens were differentiated based on relative amounts of some straight
and monomethyl-branched hydrocarbon components.