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Chemical ecology and insect conservation: optimising pheromone-based monitoring of the threatened saproxylic click beetle Elater ferrugineus

Svensson, Glenn LU ; Liedtke, Christoph; Hedenström, Erik; Breistein, Palle; Bång, Joakim and Larsson, Mattias C (2012) In Journal of Insect Conservation 16(4). p.549-555
Abstract
Elater ferrugineus is a saproxylic click beetle inhabiting old deciduous trees in Europe. It is threatened throughout its area of distribution due to habitat loss. No efficient monitoring method has been available for this species, but observed attraction of females to (R)-(+)-γ-decalactone, which is a male-produced sex pheromone of its prey, the scarab beetle Osmoderma eremita, has led to the development of an odour lure for monitoring. In addition, four esters have recently been identified from the pheromone-producing gland in female E. ferrugineus, and a blend of these esters is highly attractive to conspecific males in the field, revealing an alternative odour-based method for monitoring this species. However, no... (More)
Elater ferrugineus is a saproxylic click beetle inhabiting old deciduous trees in Europe. It is threatened throughout its area of distribution due to habitat loss. No efficient monitoring method has been available for this species, but observed attraction of females to (R)-(+)-γ-decalactone, which is a male-produced sex pheromone of its prey, the scarab beetle Osmoderma eremita, has led to the development of an odour lure for monitoring. In addition, four esters have recently been identified from the pheromone-producing gland in female E. ferrugineus, and a blend of these esters is highly attractive to conspecific males in the field, revealing an alternative odour-based method for monitoring this species. However, no rigorous analysis has been performed to check whether all four esters show biological activity in male E. ferrugineus, and whether its own sex pheromone is a more potent lure than the prey kairomone for monitoring of E. ferrugineus. In this study, we reinvestigated the E. ferrugineus sex pheromone, using electrophysiological and behavioural analyses, and found that only one of the esters, 7-methyloctyl (Z)-4-decenoate, is active. In addition, trapping experiments revealed that 7-methyloctyl (Z)-4-decenoate is a much more efficient attractant for male E. ferrugineus than the prey pheromone is for conspecific females, or any sex of O. eremita. With a very efficient odour lure at hand, novel information about current distribution, local population sizes, and dispersal ranges in E. ferrugineus can now be obtained, which can aid in conservation efforts to protect this threatened insect and its habitat. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Elateridae, Scarabaeidae, Sex pheromone, Kairomone, Field trapping, Conservation
in
Journal of Insect Conservation
volume
16
issue
4
pages
549 - 555
publisher
Springer
external identifiers
  • wos:000306218700007
  • scopus:84864285075
ISSN
1366-638X
DOI
10.1007/s10841-011-9440-5
project
The PheroBio project (Pheromone monitoring of Biodiversity)
language
English
LU publication?
yes
id
4403747d-1275-4ebe-a077-a243d837ffa7 (old id 2170069)
date added to LUP
2011-10-03 12:11:18
date last changed
2017-07-23 04:00:29
@article{4403747d-1275-4ebe-a077-a243d837ffa7,
  abstract     = {<i>Elater ferrugineus</i> is a saproxylic click beetle inhabiting old deciduous trees in Europe. It is threatened throughout its area of distribution due to habitat loss. No efficient monitoring method has been available for this species, but observed attraction of females to (R)-(+)-γ-decalactone, which is a male-produced sex pheromone of its prey, the scarab beetle <i>Osmoderma eremita</i>, has led to the development of an odour lure for monitoring. In addition, four esters have recently been identified from the pheromone-producing gland in female <i>E. ferrugineus</i>, and a blend of these esters is highly attractive to conspecific males in the field, revealing an alternative odour-based method for monitoring this species. However, no rigorous analysis has been performed to check whether all four esters show biological activity in male <i>E. ferrugineus</i>, and whether its own sex pheromone is a more potent lure than the prey kairomone for monitoring of <i>E. ferrugineus</i>. In this study, we reinvestigated the <i>E. ferrugineus</i> sex pheromone, using electrophysiological and behavioural analyses, and found that only one of the esters, 7-methyloctyl (Z)-4-decenoate, is active. In addition, trapping experiments revealed that 7-methyloctyl (Z)-4-decenoate is a much more efficient attractant for male E. ferrugineus than the prey pheromone is for conspecific females, or any sex of O. eremita. With a very efficient odour lure at hand, novel information about current distribution, local population sizes, and dispersal ranges in E. ferrugineus can now be obtained, which can aid in conservation efforts to protect this threatened insect and its habitat.},
  author       = {Svensson, Glenn and Liedtke, Christoph and Hedenström, Erik and Breistein, Palle and Bång, Joakim and Larsson, Mattias C},
  issn         = {1366-638X},
  keyword      = {Elateridae,Scarabaeidae,Sex pheromone,Kairomone,Field trapping,Conservation},
  language     = {eng},
  number       = {4},
  pages        = {549--555},
  publisher    = {Springer},
  series       = {Journal of Insect Conservation},
  title        = {Chemical ecology and insect conservation: optimising pheromone-based monitoring of the threatened saproxylic click beetle <i>Elater ferrugineus</i>},
  url          = {http://dx.doi.org/10.1007/s10841-011-9440-5},
  volume       = {16},
  year         = {2012},
}