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(3Z,6Z,9Z,12Z,15Z)-pentacosapentaene and (9Z,11E)-tetradecadienyl acetate: sex pheromone of the spruce coneworm Dioryctria abietella (Lepidoptera: Pyralidae)

Löfstedt, Christer LU ; Svensson, Glenn LU ; Jirle, Erling LU ; Rosenberg, Olle; Roques, Alain and Millar, Jocelyn G (2012) In Journal of Applied Entomology 135. p.70-78
Abstract
The spruce coneworm, Dioryctria abietella Denis & Schiffermüller (Lepidoptera: Pyralidae), is a major pest in spruce seed orchards in Europe. Initial work on its pheromone ecology reported significant attraction of males to (9Z,11E)-tetradecadienyl acetate (9Z,11E-14:OAc), but this compound appeared to be a very weak attractant in field trials. In this study, we show that a second female-produced compound, the polyunsaturated long-chain hydrocarbon (3Z,6Z,9Z,12Z,15Z)-pentacosapentaene (C25 pentaene), is a strong synergist to 9Z,11E-14:OAc, and that both compounds are needed for significant attraction of males. In field-trapping experiments, the highest catches were obtained with high amounts of pentaene added to the acetate... (More)
The spruce coneworm, Dioryctria abietella Denis & Schiffermüller (Lepidoptera: Pyralidae), is a major pest in spruce seed orchards in Europe. Initial work on its pheromone ecology reported significant attraction of males to (9Z,11E)-tetradecadienyl acetate (9Z,11E-14:OAc), but this compound appeared to be a very weak attractant in field trials. In this study, we show that a second female-produced compound, the polyunsaturated long-chain hydrocarbon (3Z,6Z,9Z,12Z,15Z)-pentacosapentaene (C25 pentaene), is a strong synergist to 9Z,11E-14:OAc, and that both compounds are needed for significant attraction of males. In field-trapping experiments, the highest catches were obtained with high amounts of pentaene added to the acetate (acetate:pentaene ratio from 1 : 10 to 1 : 30) and the highest doses (1–3 mg per rubber septum dispenser) were the most attractive. Two potential behavioural synergists, (Z)-9-tetradecenyl acetate and (9Z,12E)-tetradecadienyl acetate, turned out to be behavioural antagonists and both reduced trap catch of D. abietella in a dose-dependent way when added individually to the binary blend. The recent discovery of the C25 pentaene as a pheromone component of D. abietella, as well as of three North American congeners, suggests that the use of a mixture of so-called type I and type II pheromone compounds is a widespread motif of sexual communication within the genus. The identification of a highly attractive sex pheromone will help in developing efficient strategies for monitoring and control of D. abietella populations in European spruce seed orchards. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
monitoring, seed orchard, pheromone gland analysis, field trapping, behavioural antagonist, cone insect
in
Journal of Applied Entomology
volume
135
pages
70 - 78
publisher
Wiley-Blackwell
external identifiers
  • wos:000298879200007
ISSN
0931-2048
DOI
10.1111/j.1439-0418.2011.01619.x
project
Evolutionary mechanisms of pheromone divergence in Lepidoptera
Pheromones for managing insects in spruce seed orchards
language
English
LU publication?
yes
id
860c53a9-97df-469f-89cb-bbbb439e92c1 (old id 2063958)
date added to LUP
2011-08-17 00:09:28
date last changed
2016-09-21 15:46:19
@article{860c53a9-97df-469f-89cb-bbbb439e92c1,
  abstract     = {The spruce coneworm, <i>Dioryctria abietella</i> Denis &amp; Schiffermüller (Lepidoptera: Pyralidae), is a major pest in spruce seed orchards in Europe. Initial work on its pheromone ecology reported significant attraction of males to (9Z,11E)-tetradecadienyl acetate (9Z,11E-14:OAc), but this compound appeared to be a very weak attractant in field trials. In this study, we show that a second female-produced compound, the polyunsaturated long-chain hydrocarbon (3Z,6Z,9Z,12Z,15Z)-pentacosapentaene (C25 pentaene), is a strong synergist to 9Z,11E-14:OAc, and that both compounds are needed for significant attraction of males. In field-trapping experiments, the highest catches were obtained with high amounts of pentaene added to the acetate (acetate:pentaene ratio from 1 : 10 to 1 : 30) and the highest doses (1–3 mg per rubber septum dispenser) were the most attractive. Two potential behavioural synergists, (Z)-9-tetradecenyl acetate and (9Z,12E)-tetradecadienyl acetate, turned out to be behavioural antagonists and both reduced trap catch of <i>D. abietella</i> in a dose-dependent way when added individually to the binary blend. The recent discovery of the C25 pentaene as a pheromone component of <i>D. abietella</i>, as well as of three North American congeners, suggests that the use of a mixture of so-called type I and type II pheromone compounds is a widespread motif of sexual communication within the genus. The identification of a highly attractive sex pheromone will help in developing efficient strategies for monitoring and control of <i>D. abietella</i> populations in European spruce seed orchards.},
  author       = {Löfstedt, Christer and Svensson, Glenn and Jirle, Erling and Rosenberg, Olle and Roques, Alain and Millar, Jocelyn G},
  issn         = {0931-2048},
  keyword      = {monitoring,seed orchard,pheromone gland analysis,field trapping,behavioural antagonist,cone insect},
  language     = {eng},
  pages        = {70--78},
  publisher    = {Wiley-Blackwell},
  series       = {Journal of Applied Entomology},
  title        = {(3<i>Z</i>,6<i>Z</i>,9<i>Z</i>,12<i>Z</i>,15<i>Z</i>)-pentacosapentaene and (9<i>Z</i>,11<i>E</i>)-tetradecadienyl acetate: sex pheromone of the spruce coneworm <i>Dioryctria abietella</i> (Lepidoptera: Pyralidae)},
  url          = {http://dx.doi.org/10.1111/j.1439-0418.2011.01619.x},
  volume       = {135},
  year         = {2012},
}