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Determination of the Release Rate of the Red Palm Weevil (RPW) Pheromone From Lures as a Model For Quantitative GC Analysis of Secondary Alcohols [abstract]
Year:
2002
Source of publication :
IOBC/WPRS Bulletin
Authors :
Dunkelblum, Ezra
;
.
Harel, Miriam
;
.
Reneh, Saadia
;
.
Soroker, Victoria
;
.
Zada, Anat Levi
;
.
Volume :
Co-Authors:

Y. Nakache

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

The Rhynchophorus ferrugineus, (Coleoptera, Curculionidae) (RPW) is a major pest of various palm species, including dates. RPW are usually cryptic and develop within the tree trunk. Infested trees eventually die and collapse causing total loss of the crops. One of the main methods practiced to control adult weevils in date and coconut plantations is monitoring and mass trapping with lures baited with the aggregation pheromone. The pheromone secreted by the males is 4-methyl-5-nonanol (90%) and 4-methyl-5-nonanone (10%). Evaluation of the lure lifespan requires to determine the release rate of these compounds from the commercial lures. We encountered severe difficulties in the direct GC quantitative analysis of the major component. Therefore, we developed a simple GC analysis of secondary alcohols converting them to trifluoroacetyl derivatives and using secondary alcohol acetates as internal standards. This method was applied also for the quantitative analysis of several secondary alcohols, including the aggregation pheromone components of the almond bark, 4- methyl-3-heptanol. The method presented in this study facilitated the evaluation of these pheromone lures and enabled the determination of their longevity and their release rate profiles.

Note:
Related Files :
Date palm
GC analysis
pests
Phoenix dactylifera
Red palm weevil
release rate
Secondary alcohols
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
Abstract
;
.
Conference paper
;
.
Language:
English
Editors' remarks:
ID:
55693
Last updated date:
02/03/2022 17:27
Creation date:
21/07/2021 15:28
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Scientific Publication
Determination of the Release Rate of the Red Palm Weevil (RPW) Pheromone From Lures as a Model For Quantitative GC Analysis of Secondary Alcohols [abstract]

Y. Nakache

Determination of the Release Rate of the Red Palm Weevil (RPW) Pheromone From Lures as a Model For Quantitative GC Analysis of Secondary Alcohols

The Rhynchophorus ferrugineus, (Coleoptera, Curculionidae) (RPW) is a major pest of various palm species, including dates. RPW are usually cryptic and develop within the tree trunk. Infested trees eventually die and collapse causing total loss of the crops. One of the main methods practiced to control adult weevils in date and coconut plantations is monitoring and mass trapping with lures baited with the aggregation pheromone. The pheromone secreted by the males is 4-methyl-5-nonanol (90%) and 4-methyl-5-nonanone (10%). Evaluation of the lure lifespan requires to determine the release rate of these compounds from the commercial lures. We encountered severe difficulties in the direct GC quantitative analysis of the major component. Therefore, we developed a simple GC analysis of secondary alcohols converting them to trifluoroacetyl derivatives and using secondary alcohol acetates as internal standards. This method was applied also for the quantitative analysis of several secondary alcohols, including the aggregation pheromone components of the almond bark, 4- methyl-3-heptanol. The method presented in this study facilitated the evaluation of these pheromone lures and enabled the determination of their longevity and their release rate profiles.

Scientific Publication
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