An aggregation attractant for the sugar-beet weevil, Bothynoderes punctiventris

Miklós Tóth, István Ujváry, Ivan Sivcev, Zoltán Imrei, István Szarukán, Orsolya Farkas, Ágnes Gömöry, Eszter Gács-Baitz, Wittko Francke

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

During our screening studies, attractiveness of a ternary mixture of synthetic Grandlure I [racemic cis-1-methyl-2-(1-methylenethenyl)-cyclobutane ethanol], Grandlure II [(Z)-2-(3,3-dimethyl)cyclohexylidene ethanol], and Grandlure III-IV [(Z)- and (E)-2-ochtodenal; (Z)- and (E)-(3,3-dimethyl) cyclohexylidene acetaldehyde] for the sugar-beet weevil, Bothynoderes punctiventris Germar (Coleoptera: Curculionidae), was observed in field-trapping tests at several sites in Hungary and Serbia. The mixture attracted both males and females. Later tests revealed that of the components in the ternary mixture, only Grandlure III-IV were responsible for attraction, and the addition of Grandlures I or II in varying percentages had no influence on trap captures. Traps baited with 50-50 000 μg of Grandlure III-IV on rubber or polyethylene dispensers yielded high catches of weevils. When testing synthetic samples enriched in the respective geometrical isomer, Grandlure IV had a tendency of catching more weevils, but differences were not significant from lower catches by a 1:1 Z:E blend or Grandlure III. In gas chromatography-flame ionization detection/electroantennographic detection studies, antennae of both female and male weevils were more responsive to the (E)- than to the (Z)-isomer suggesting a more important role for Grandlure IV. Efforts to verify the presence of Grandlure III or IV in volatiles collected from either sex of live sugar-beet weevils or body washings with pentane remained inconclusive. Traps baited with Grandlure III-IV can now be used as sensitive and powerful trapping tools in the control of the sugar-beet weevil.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalEntomologia Experimentalis et Applicata
Volume122
Issue number2
DOIs
Publication statusPublished - Feb 1 2007

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Keywords

  • 2-ochtodenal
  • Coleoptera
  • Curculionidae
  • Field trapping
  • Grandlure III-IV
  • Monitoring

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science

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