Advanced

Identification and Synthesis of Putative Pheromone Components of the Threatened Salt Marsh Bagworm Moth, Whittleia retiella (Lepidoptera Psychidae)

Rahmani, Rizan ; Carrasco, David LU ; Svensson, Glenn P. LU ; Roweck, Hartmut ; Ryrholm, Nils ; Larsson, Mattias C. LU and Hedenström, Erik (2020) In Journal of Chemical Ecology 46. p.115-127
Abstract

Whittleia retiella (Newman, 1847) is a threatened salt marsh species of the bagworm moth family Psychidae. For its preservation it is necessary to develop efficient tools to survey its distribution and habitat requirements in order to use appropriate conservation methods. Such tools may be pheromone-based monitoring systems, which have documented efficacy in establishing the occurrence of cryptic insect species in nature. By using gas chromatography combined with electroantennographic detection (GC-EAD), we found two compounds in female W. retiella headspace samples and whole-body extracts that elicited electrophysiological activity in male antennae. Gas chromatograpy coupled with mass spectrometry (GC-MS) operating in electron impact... (More)

Whittleia retiella (Newman, 1847) is a threatened salt marsh species of the bagworm moth family Psychidae. For its preservation it is necessary to develop efficient tools to survey its distribution and habitat requirements in order to use appropriate conservation methods. Such tools may be pheromone-based monitoring systems, which have documented efficacy in establishing the occurrence of cryptic insect species in nature. By using gas chromatography combined with electroantennographic detection (GC-EAD), we found two compounds in female W. retiella headspace samples and whole-body extracts that elicited electrophysiological activity in male antennae. Gas chromatograpy coupled with mass spectrometry (GC-MS) operating in electron impact (EI) mode and comparison of the analytical data with those of synthetic reference compounds showed the chemical structures of these putative pheromone components to be (1S)-1-methylpropyl (5Z)-dec-5-enoate and 1-methylethyl (5Z)-dec-5-enoate. Field assays using baits loaded with synthetic compounds revealed that conspecific males were attracted to (1S)-1-methylpropyl (5Z)-dec-5-enoate alone or in combination with 1-methylethyl (5Z)-dec-5-enoate, whereas 1-methylethyl (5Z)-dec-5-enoate neither attracted nor repelled males in the field assays when tested alone. This study shows the potential of using (1S)-1-methylpropyl (5Z)-dec-5-enoate for monitoring W. retiella to gather more detailed information about the geographic distribution and habitat needs of this rare moth.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
(1S)-1-Methylpropyl (5Z)-dec-5-enoate, 1-Methylethyl (5Z)-dec-5-enoate, Enantiomers, Endangered species, Field observation, Species monitoring, Stereoisomers
in
Journal of Chemical Ecology
volume
46
pages
13 pages
publisher
Springer
external identifiers
  • scopus:85079705878
  • pmid:32056064
ISSN
0098-0331
DOI
10.1007/s10886-020-01145-x
language
English
LU publication?
yes
id
d677b927-4bd3-4d83-8b36-f5dbfe5a5e4d
date added to LUP
2020-03-04 13:27:20
date last changed
2021-06-08 02:37:42
@article{d677b927-4bd3-4d83-8b36-f5dbfe5a5e4d,
  abstract     = {<p>Whittleia retiella (Newman, 1847) is a threatened salt marsh species of the bagworm moth family Psychidae. For its preservation it is necessary to develop efficient tools to survey its distribution and habitat requirements in order to use appropriate conservation methods. Such tools may be pheromone-based monitoring systems, which have documented efficacy in establishing the occurrence of cryptic insect species in nature. By using gas chromatography combined with electroantennographic detection (GC-EAD), we found two compounds in female W. retiella headspace samples and whole-body extracts that elicited electrophysiological activity in male antennae. Gas chromatograpy coupled with mass spectrometry (GC-MS) operating in electron impact (EI) mode and comparison of the analytical data with those of synthetic reference compounds showed the chemical structures of these putative pheromone components to be (1S)-1-methylpropyl (5Z)-dec-5-enoate and 1-methylethyl (5Z)-dec-5-enoate. Field assays using baits loaded with synthetic compounds revealed that conspecific males were attracted to (1S)-1-methylpropyl (5Z)-dec-5-enoate alone or in combination with 1-methylethyl (5Z)-dec-5-enoate, whereas 1-methylethyl (5Z)-dec-5-enoate neither attracted nor repelled males in the field assays when tested alone. This study shows the potential of using (1S)-1-methylpropyl (5Z)-dec-5-enoate for monitoring W. retiella to gather more detailed information about the geographic distribution and habitat needs of this rare moth.</p>},
  author       = {Rahmani, Rizan and Carrasco, David and Svensson, Glenn P. and Roweck, Hartmut and Ryrholm, Nils and Larsson, Mattias C. and Hedenström, Erik},
  issn         = {0098-0331},
  language     = {eng},
  month        = {02},
  pages        = {115--127},
  publisher    = {Springer},
  series       = {Journal of Chemical Ecology},
  title        = {Identification and Synthesis of Putative Pheromone Components of the Threatened Salt Marsh Bagworm Moth, Whittleia retiella (Lepidoptera Psychidae)},
  url          = {http://dx.doi.org/10.1007/s10886-020-01145-x},
  doi          = {10.1007/s10886-020-01145-x},
  volume       = {46},
  year         = {2020},
}