Volatiles attractive to the mango pulp weevil, Sternochetus frigidus (Fabr) (Coleoptera: Curculionidae)

Issue Date

10-2008

Abstract

Volatiles from male and female weevils, frass and green mango fruits were adsorbed in Tenax AG and extracted by Soxhlet in n-pentane. Olfactory attraction of weevils was investigated by behavioral bioassays for attractancy. When crude extracts of weevils, frass and green mango fruits were presented to starved weevils (male or female) in a Y-tube bioassay, the weevils showed definite responses. the fruit was most attractive (63.3%) at 5,7 and 8 fruit equivalents. The highest attraction (73.3%) was exhibited by virgin female weevils to mated male frass. About 24 volatile chemical components from mated male frass were identified by gas chromatography - mass spectrometry (GC-MS). Bioassays using standard chemicals are being conducted to identify the key component from mated male weevil frass that is attractive to the female weevil. The 73% attraction of virgin female weevils to mated to male frass is higher than the previously reported attraction of mango pulp weevils to mango floral volatiles (70%). This finding provides the first evidence of female weevil attraction to compounds in mango pulp weevil males.

Source or Periodical Title

Philippine Entomologist

ISSN

0048-3753

Volume

22

Issue

2

Page

206

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

CURCULIONIDAE; MANGOES; PLANT PESTS; SEX ATTRACTANTS; ATTRACTANTS: GAS CHROMATOGRAPHY

This document is currently not available here.

Share

COinS