title: The cuticular hydrocarbons of the Triatoma sordida species subcomplex (Hemiptera: Reduviidae).
abstract: 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.
authors.forename: Gustavo Mario
authors.initials: GM
authors.lastname: Calderón-Fernández
authors.forename: Marta Patricia
authors.initials: MP
authors.lastname: Juárez
mesh_terms: D000473:Alkanes / Q000032:analysis; D000704:Analysis of Variance; D000818:Animals; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006838:Hydrocarbons / Q000302:isolation & purification*; D008055:Lipids / Q000302:isolation & purification*; D008297:Male; D014224:Triatoma / Q000737:chemistry*
chemical_list: D000473:Alkanes; D006838:Hydrocarbons; D008055:Lipids
references.citation: Arch Biochem Biophys. 1997 Aug 1;344(1):208-14
references.pmid: 9244399
references.citation: Mol Phylogenet Evol. 2002 Jun;23(3):447-57
references.pmid: 12099798
references.citation: Acta Trop. 2009 May-Jun;110(2-3):88-100
references.pmid: 19385053
references.citation: PLoS Negl Trop Dis. 2009;3(5):e434
references.pmid: 19434231
references.citation: Trop Med Int Health. 1998 May;3(5):364-72
references.pmid: 9623941
references.citation: Arch Insect Biochem Physiol. 1994;25(3):177-91
references.pmid: 8167361
references.citation: J Med Entomol. 2005 Sep;42(5):780-8
references.pmid: 16363161
references.citation: Comp Biochem Physiol B Biochem Mol Biol. 2001 Jul;129(4):733-46
references.pmid: 11435128
references.citation: Mem Inst Oswaldo Cruz. 1993 Jan-Mar;88(1):27-32
references.pmid: 8246755
references.citation: Comp Biochem Physiol A Mol Integr Physiol. 2007 Jul;147(3):711-730
references.pmid: 17046303
references.citation: Med Vet Entomol. 2012 Jun;26(2):201-9
references.pmid: 21929581
references.citation: Am J Trop Med Hyg. 1997 Dec;57(6):732-9
references.pmid: 9430537
references.citation: Rev Inst Med Trop Sao Paulo. 1993 May-Jun;35(3):237-45
references.pmid: 8278753
references.citation: Annu Rev Entomol. 2005;50:371-93
references.pmid: 15355247
references.citation: Mem Inst Oswaldo Cruz. 1993 Jul-Sep;88(3):379-85
references.pmid: 8107601
references.citation: J Med Entomol. 2011 Mar;48(2):262-71
references.pmid: 21485361