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Interspecific Cross-Attraction between the South American Cerambycid Beetles Cotyclytus curvatus and Megacyllene acuta is Averted by Minor Pheromone Components.
Silva, Weliton D; Millar, Jocelyn G; Hanks, Lawrence M; Costa, Camila M; Leite, Mariana O G; Tonelli, Mateus; Bento, José Maurício S.
Afiliação
  • Silva WD; Department of Entomology and Acarology, University of São Paulo, Piracicaba, SP, 13418900, Brazil. wdsilv@gmail.com.
  • Millar JG; Departments of Entomology and Chemistry, University of California, Riverside, CA, 92521, USA.
  • Hanks LM; Department of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
  • Costa CM; Department of Entomology and Acarology, University of São Paulo, Piracicaba, SP, 13418900, Brazil.
  • Leite MOG; Department of Entomology and Acarology, University of São Paulo, Piracicaba, SP, 13418900, Brazil.
  • Tonelli M; Department of Entomology and Acarology, University of São Paulo, Piracicaba, SP, 13418900, Brazil.
  • Bento JMS; Department of Entomology and Acarology, University of São Paulo, Piracicaba, SP, 13418900, Brazil.
J Chem Ecol ; 44(3): 268-275, 2018 Mar.
Article em En | MEDLINE | ID: mdl-29430578
During field screening trials conducted in Brazil in 2015, adults of both sexes of the cerambycid beetles Cotyclytus curvatus (Germar) and Megacyllene acuta (Germar) (subfamily Cerambycinae, tribe Clytini) were significantly attracted to racemic 3-hydroxyhexan-2-one and racemic 2-methylbutan-1-ol, chemicals which previously have been identified as male-produced aggregation-sex pheromones of a number of cerambycid species endemic to other continents. Subsequent analyses of samples of beetle-produced volatiles revealed that males of C. curvatus sex-specifically produce only (R)-3-hydroxyhexan-2-one, whereas males of M. acuta produce the same compound along with lesser amounts of (2S,3S)-2,3-hexanediol and (S)-2-methylbutan-1-ol. Follow-up field trials showed that both sexes of both species were attracted to synthetic reconstructions of their respective pheromones, confirming that males produce aggregation-sex pheromones. The minor pheromone components of M. acuta, (S)-2-methylbutan-1-ol and (2S,3S)-2,3-hexanediol, synergized attraction of that species, but antagonized attraction of C. curvatus to (R)-3-hydroxyhexan-2-one. Beetles of other cerambycine species also were attracted in significant numbers, including Chrysoprasis linearis Bates, Cotyclytus dorsalis (Laporte & Gory), and Megacyllene falsa (Chevrolat). Our results provide further evidence that 3-hydroxyhexan-2-one is a major component of attractant pheromones of numerous cerambycine species world-wide. Our results also highlight our increasing understanding of the crucial role of minor pheromone components in imparting species specificity to cerambycid pheromone blends, as is known to occur in numerous species in other insect families.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Atrativos Sexuais / Comportamento Sexual Animal / Besouros Limite: Animals Idioma: En Revista: J Chem Ecol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Atrativos Sexuais / Comportamento Sexual Animal / Besouros Limite: Animals Idioma: En Revista: J Chem Ecol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos