| Epicuticle Lipids Mediate Mate Recognition in Triatoma infestans. | |
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MedLine Citation:
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PMID: 21373991 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Epicuticular lipids are contact cues in intraspecific chemical communication in insects, both for aggregation and sexual behavior. Triatomine bugs are vectors of the parasite Trypanosoma cruzi, the cause of Chagas disease. In Triatoma infestans, the major epicuticular lipids are hydrocarbons, fatty alcohols, and free and esterified fatty acids. Previously, we found that epicuticular lipid extracts, or selected fatty acid components, trigger aggregation and arrestment behavior in this bug. Using headspace solid phase microextraction, we found no sexual dimorphism in epicuticular hydrocarbons, but found female-specific fatty alcohols (eicosanol and docosanol). The role of epicuticular lipids in T. infestans copulation behavior was tested by observing male responses to live or various treatments of freeze-killed females. We report that hexane-soluble contact cues on females trigger copulation by males. Freeze-killed intact females were attractive to males, but no response was observed when males were exposed to hexane-washed females. Responses were partially recovered when epicuticular extract was applied to the dorsal surface of dead, hexane-washed females. One female equivalent of docosanol, evoked similar responses. |
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Authors:
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Luciana María Cocchiararo-Bastias; Sergio Javier Mijailovsky; Gustavo Mario Calderon-Fernández; Alicia Nieves Lorenzo Figueiras; M Patricia Juárez |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-5 |
Journal Detail:
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Title: Journal of chemical ecology Volume: - ISSN: 1573-1561 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-4 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7505563 Medline TA: J Chem Ecol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Instituto de Investigaciones Bioquímicas de La Plata (CCT La Plata CONICET-UNLP), Facultad de Ciencias Medicas, Universidad Nacional de La Plata, La Plata, Argentina. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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