Influence of host fruit and conspecifics on the release of the sex pheromone by toxotrypana curvicauda Males (Diptera: Tephritidae)

Norma Robledo, René Arzuffi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The release of tephritid sex pheromones depends significantly on the age of the male, the social context (presence of conspecifics) and chemical context (host volatiles). In this study, the influence of host fruit and conspecific (males and females) on the emission of the pheromonal compound 2-methyl-6-vinylpyrazine (2,6 mvp) by Toxotrypana curvicauda (Gerstaecker) males was investigated under laboratory conditions. Males were divided into one control group (nonexposed to treatment) and five experimental groups were placed 1 hr before volatile collection with: 1) host fruit (unripe papaya), 2) two females, 3) two males, 4) host fruit plus two females, and 5) host fruit plus two males. The volatiles were sampled by means of solid phase microextraction and analyzed with gas chromatography-mass spectrometry, with a focus on 2,6 mvp. Males emitted volatiles from the first day after adult emergence. The maximum peak and the temporal pattern of 2,6 mvp release were modified by the presence of host fruit and conspecific males or females. On day 5, males in the presence of fruit maintained a constant release of 2,6 mvp while the presence of conspecific caused a decrease of pheromone release. The release of 2,6 mvp was increased significantly in males exposed to both types of stimuli simultaneously. The stimuli (fruit and conspecifics) modified the release of 2,6 mvp, however the effect depended on male age.

Original languageEnglish
Pages (from-to)387-391
Number of pages5
JournalEnvironmental Entomology
Volume41
Issue number2
DOIs
StatePublished - 1 Apr 2012

Fingerprint

Toxotrypana curvicauda
sex pheromone
sex pheromones
Tephritidae
fruit
fruits
papayas
pheromone

Keywords

  • 2-methyl-6-vinylpyrazine
  • conspecifics
  • host fruit
  • papaya fruit ßy
  • pheromone

Cite this

@article{66dc9fb6461a4f40a91ec2a2b4164f7a,
title = "Influence of host fruit and conspecifics on the release of the sex pheromone by toxotrypana curvicauda Males (Diptera: Tephritidae)",
abstract = "The release of tephritid sex pheromones depends significantly on the age of the male, the social context (presence of conspecifics) and chemical context (host volatiles). In this study, the influence of host fruit and conspecific (males and females) on the emission of the pheromonal compound 2-methyl-6-vinylpyrazine (2,6 mvp) by Toxotrypana curvicauda (Gerstaecker) males was investigated under laboratory conditions. Males were divided into one control group (nonexposed to treatment) and five experimental groups were placed 1 hr before volatile collection with: 1) host fruit (unripe papaya), 2) two females, 3) two males, 4) host fruit plus two females, and 5) host fruit plus two males. The volatiles were sampled by means of solid phase microextraction and analyzed with gas chromatography-mass spectrometry, with a focus on 2,6 mvp. Males emitted volatiles from the first day after adult emergence. The maximum peak and the temporal pattern of 2,6 mvp release were modified by the presence of host fruit and conspecific males or females. On day 5, males in the presence of fruit maintained a constant release of 2,6 mvp while the presence of conspecific caused a decrease of pheromone release. The release of 2,6 mvp was increased significantly in males exposed to both types of stimuli simultaneously. The stimuli (fruit and conspecifics) modified the release of 2,6 mvp, however the effect depended on male age.",
keywords = "2-methyl-6-vinylpyrazine, conspecifics, host fruit, papaya fruit {\ss}y, pheromone",
author = "Norma Robledo and Ren{\'e} Arzuffi",
year = "2012",
month = "4",
day = "1",
doi = "10.1603/EN11037",
language = "Ingl{\'e}s",
volume = "41",
pages = "387--391",
journal = "Environmental Entomology",
issn = "0046-225X",
publisher = "Oxford University Press",
number = "2",

}

Influence of host fruit and conspecifics on the release of the sex pheromone by toxotrypana curvicauda Males (Diptera : Tephritidae). / Robledo, Norma; Arzuffi, René.

In: Environmental Entomology, Vol. 41, No. 2, 01.04.2012, p. 387-391.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of host fruit and conspecifics on the release of the sex pheromone by toxotrypana curvicauda Males (Diptera

T2 - Tephritidae)

AU - Robledo, Norma

AU - Arzuffi, René

PY - 2012/4/1

Y1 - 2012/4/1

N2 - The release of tephritid sex pheromones depends significantly on the age of the male, the social context (presence of conspecifics) and chemical context (host volatiles). In this study, the influence of host fruit and conspecific (males and females) on the emission of the pheromonal compound 2-methyl-6-vinylpyrazine (2,6 mvp) by Toxotrypana curvicauda (Gerstaecker) males was investigated under laboratory conditions. Males were divided into one control group (nonexposed to treatment) and five experimental groups were placed 1 hr before volatile collection with: 1) host fruit (unripe papaya), 2) two females, 3) two males, 4) host fruit plus two females, and 5) host fruit plus two males. The volatiles were sampled by means of solid phase microextraction and analyzed with gas chromatography-mass spectrometry, with a focus on 2,6 mvp. Males emitted volatiles from the first day after adult emergence. The maximum peak and the temporal pattern of 2,6 mvp release were modified by the presence of host fruit and conspecific males or females. On day 5, males in the presence of fruit maintained a constant release of 2,6 mvp while the presence of conspecific caused a decrease of pheromone release. The release of 2,6 mvp was increased significantly in males exposed to both types of stimuli simultaneously. The stimuli (fruit and conspecifics) modified the release of 2,6 mvp, however the effect depended on male age.

AB - The release of tephritid sex pheromones depends significantly on the age of the male, the social context (presence of conspecifics) and chemical context (host volatiles). In this study, the influence of host fruit and conspecific (males and females) on the emission of the pheromonal compound 2-methyl-6-vinylpyrazine (2,6 mvp) by Toxotrypana curvicauda (Gerstaecker) males was investigated under laboratory conditions. Males were divided into one control group (nonexposed to treatment) and five experimental groups were placed 1 hr before volatile collection with: 1) host fruit (unripe papaya), 2) two females, 3) two males, 4) host fruit plus two females, and 5) host fruit plus two males. The volatiles were sampled by means of solid phase microextraction and analyzed with gas chromatography-mass spectrometry, with a focus on 2,6 mvp. Males emitted volatiles from the first day after adult emergence. The maximum peak and the temporal pattern of 2,6 mvp release were modified by the presence of host fruit and conspecific males or females. On day 5, males in the presence of fruit maintained a constant release of 2,6 mvp while the presence of conspecific caused a decrease of pheromone release. The release of 2,6 mvp was increased significantly in males exposed to both types of stimuli simultaneously. The stimuli (fruit and conspecifics) modified the release of 2,6 mvp, however the effect depended on male age.

KW - 2-methyl-6-vinylpyrazine

KW - conspecifics

KW - host fruit

KW - papaya fruit ßy

KW - pheromone

UR - http://www.scopus.com/inward/record.url?scp=84859725281&partnerID=8YFLogxK

U2 - 10.1603/EN11037

DO - 10.1603/EN11037

M3 - Artículo

C2 - 22507013

AN - SCOPUS:84859725281

VL - 41

SP - 387

EP - 391

JO - Environmental Entomology

JF - Environmental Entomology

SN - 0046-225X

IS - 2

ER -