Advanced

Antennal and behavioural responses of the spruce seedmoth, Cydia strobilella, to floral volatiles of Norwayspruce, Picea abies, and temporal variation in emissionof active compounds

JAKOBSSON, JOHAN LU ; Svensson, Glenn LU ; Löfstedt, Christer LU and Anderbrant, Olle LU (2016) In Entomologia Experimentalis et Applicata 160(3). p.209-218
Abstract

We investigated whether spruce seed moth, Cydia strobilella L. (Lepidoptera: Tortricidae, Grapholitini), one of the most damaging seed predators on Norway spruce, Picea abies (L.) H. Karst (Pinaceae), uses olfactory cues during host search. Analyses with coupled gas chromatography and electroantennography revealed that antennae of both sexes of moths responded consistently to three compounds in the headspace from female spruce flowers, i.e., α-pinene, β-pinene, and myrcene, but not to limonene as has been previously reported for this species. The amounts of these active volatiles released from flowers and cones of P. abies were quantified, and their diurnal and seasonal variation was monitored. The total release of the active volatiles... (More)

We investigated whether spruce seed moth, Cydia strobilella L. (Lepidoptera: Tortricidae, Grapholitini), one of the most damaging seed predators on Norway spruce, Picea abies (L.) H. Karst (Pinaceae), uses olfactory cues during host search. Analyses with coupled gas chromatography and electroantennography revealed that antennae of both sexes of moths responded consistently to three compounds in the headspace from female spruce flowers, i.e., α-pinene, β-pinene, and myrcene, but not to limonene as has been previously reported for this species. The amounts of these active volatiles released from flowers and cones of P. abies were quantified, and their diurnal and seasonal variation was monitored. The total release of the active volatiles correlated well with the diurnal and seasonal flight activity of C. strobilella as revealed by catches of males in pheromone-baited traps. In field trapping experiments, where baits were loaded with proportions and enantiomeric ratios of α-pinene, β-pinene, and myrcene matching those of the female P. abies floral headspace, substantial catches of male C. strobilella were achieved, whereas few females were captured. These surprising results suggest that male C. strobilella make use of host volatiles to aid them in their search for females.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
field trapping, GC-EAD, Grapholitini, host attraction, kairomone, Lepidoptera, myrcene, Pinaceae, seed predation, Tortricidae, α-pinene, β-pinene
in
Entomologia Experimentalis et Applicata
volume
160
issue
3
pages
10 pages
publisher
Kluwer
external identifiers
  • Scopus:84987809887
  • Scopus:84987809887
ISSN
1570-7458
DOI
10.1111/eea.12474http://dx.doi.org/10.1111/eea.12474
language
English
LU publication?
yes
id
6479ff6b-ed47-431f-80f4-28a7ac5f5af1
date added to LUP
2016-09-20 15:58:54
date last changed
2017-01-01 08:34:25
@article{6479ff6b-ed47-431f-80f4-28a7ac5f5af1,
  abstract     = {<p>We investigated whether spruce seed moth, Cydia strobilella L. (Lepidoptera: Tortricidae, Grapholitini), one of the most damaging seed predators on Norway spruce, Picea abies (L.) H. Karst (Pinaceae), uses olfactory cues during host search. Analyses with coupled gas chromatography and electroantennography revealed that antennae of both sexes of moths responded consistently to three compounds in the headspace from female spruce flowers, i.e., α-pinene, β-pinene, and myrcene, but not to limonene as has been previously reported for this species. The amounts of these active volatiles released from flowers and cones of P. abies were quantified, and their diurnal and seasonal variation was monitored. The total release of the active volatiles correlated well with the diurnal and seasonal flight activity of C. strobilella as revealed by catches of males in pheromone-baited traps. In field trapping experiments, where baits were loaded with proportions and enantiomeric ratios of α-pinene, β-pinene, and myrcene matching those of the female P. abies floral headspace, substantial catches of male C. strobilella were achieved, whereas few females were captured. These surprising results suggest that male C. strobilella make use of host volatiles to aid them in their search for females.</p>},
  author       = {JAKOBSSON, JOHAN and Svensson, Glenn and Löfstedt, Christer and Anderbrant, Olle},
  issn         = {1570-7458},
  keyword      = {field trapping,GC-EAD,Grapholitini,host attraction,kairomone,Lepidoptera,myrcene,Pinaceae,seed predation,Tortricidae,α-pinene,β-pinene},
  language     = {eng},
  month        = {09},
  number       = {3},
  pages        = {209--218},
  publisher    = {Kluwer},
  series       = {Entomologia Experimentalis et Applicata},
  title        = {Antennal and behavioural responses of the spruce seedmoth, <i>Cydia strobilella</i>, to floral volatiles of Norwayspruce, <i>Picea abies</i>, and temporal variation in emissionof active compounds},
  url          = {http://dx.doi.org/10.1111/eea.12474http://dx.doi.org/10.1111/eea.12474},
  volume       = {160},
  year         = {2016},
}