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BEHAVIOURAL EFFECTS OF SECONDARY COMPONENTS OF THE SEX PHEROMONE OF THE EASTERN SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

A. R. Alford ,
P. J. Silk ,
M. McClure ,
C. Gibson  and
J. Fitzpatrick
A. R. Alford
Affiliation:
Chemistry Department, Research and Productivity Council, Fredericton, New Brunswick E3B 5H1
P. J. Silk*
Affiliation:
Chemistry Department, Research and Productivity Council, Fredericton, New Brunswick E3B 5H1
M. McClure
Affiliation:
Chemistry Department, Research and Productivity Council, Fredericton, New Brunswick E3B 5H1
C. Gibson
Affiliation:
Chemistry Department, Research and Productivity Council, Fredericton, New Brunswick E3B 5H1
J. Fitzpatrick
Affiliation:
Chemistry Department, Research and Productivity Council, Fredericton, New Brunswick E3B 5H1
*
2 Address correspondence.
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Abstract

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Laboratory wind tunnel and field observations have demonstrated an important behavioural role of tetradecanal (14:Ald) in the chemical communication system of the spruce budworm, Choristoneura fumiferana (Clemens). A greater number of males initiated upwind flight and continued on to contact the source when 14:Ald was present than with 95/5 E/Z11-tetradecenal (E/Z11-14:Ald) alone. The presence of E11-tetradecen-1-ol acetate (E11-14:Ac) decreased the males' responsiveness to the aldehydes. Its effect appeared to be attenuated, when present at low levels with 95/5 E/Z11-14:Ald, by the presence of 14:Ald, but it is still unclear what effects low levels of E11-14:Ac have on male behaviour.

Résumé

Des observations dans un tunnel aérodynamique et sur le terrain ont démontré que le tetradecanal (14: Ald) joue un important rôle de comportement dans le système de communication chimique de la tordeuse des bourgeons de l'épinette, Choristoneura fumiferana (Clemens). Quand le 14 : Ald était présent, un plus grand nombre de mâles s'envolèrent contre le vent et se rendirent jusqu'à la source qu'avec le 95/5 E/Z11-tetradecenal (E/Z11-14 : Ald) utilisé seul. La présence d'acétate E11-tetradecen-1-ol (E11-14 : Ac) a diminué la réaction des mâles aux aldehydes. Quand il était présent en petites quantités avec le 95/5 E/Z11-14 : Ald, son effet fut atténué par la présence de 14 : Ald. Toutefois, les effets de petites quantités de E11-14 : Ac sur le comportement des mâles restent incertains.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 9 , September 1983 , pp. 1053 - 1058
Copyright
Copyright © Entomological Society of Canada 1983

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