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Sex pheromones and reproductive isolation in four european small ermine moths

Löfstedt, Christer LU and van der Pers, Jan N.C. (1985) In Journal of Chemical Ecology 11(5). p.649-666
Abstract

Reproductive isolation among four sympatric small ermine moths (Yponomeuta) is analyzed in terms of niches in the sexual communication channel. Potential pheromone components were identified from pheromone gland secretions of Y. evonymellus, Y. cagnagellus, Y. padelius, and Y. vigintipunctatus by gas chromatography with flame ionization and electroantennographic detection and tested for behavioral activity in the field. The species were found to share (Z)-11-tetradecenyl acetate (Z11-14: OAc) in combination with varying proportions of the E isomer as primary sex pheromone components. Y. cagnagellus differs from the rest of the species by having only a small amount (1.5%) of E isomer relative to Z isomer in its pheromone. The closely... (More)

Reproductive isolation among four sympatric small ermine moths (Yponomeuta) is analyzed in terms of niches in the sexual communication channel. Potential pheromone components were identified from pheromone gland secretions of Y. evonymellus, Y. cagnagellus, Y. padelius, and Y. vigintipunctatus by gas chromatography with flame ionization and electroantennographic detection and tested for behavioral activity in the field. The species were found to share (Z)-11-tetradecenyl acetate (Z11-14: OAc) in combination with varying proportions of the E isomer as primary sex pheromone components. Y. cagnagellus differs from the rest of the species by having only a small amount (1.5%) of E isomer relative to Z isomer in its pheromone. The closely related Y. padelius has a three-component pheromone including large amounts (ca. 400%) of (Z)-11-hexadecenyl acetate (Z11-16:OAc) in addition to Z11-14: OAc (100%) and E11-14: OAc (34%). Z11-16: OAc appears to reduce trap catches of Y. evonymellus and Y. vigintipunctatus when added to the pheromone. Although these species are the two most distantly related European small ermine moths, they seem to share the same sex pheromone, i.e., Z11-14:OAc (+20%E) and (Z)-11-tetradecenol. Our interpretation is that this might have been the sex pheromone of the ancestor of today's Yponomeuta species.

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publication status
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subject
keywords
ecological niches, gas chromatography, hexadecenyl acetate, Lepidoptera, reproductive isolation, sex pheromone, tetradecenol, tetradecenyl acetate, Yponomeuta, Yponomeutidae
in
Journal of Chemical Ecology
volume
11
issue
5
pages
649 - 666
publisher
Springer
external identifiers
  • scopus:4244129482
ISSN
0098-0331
DOI
10.1007/BF00988574
project
Evolutionary mechanisms of pheromone divergence in Lepidoptera
language
English
LU publication?
yes
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2cabc40e-f5ab-4aa7-84fb-6727d5abd23e
date added to LUP
2020-07-23 15:38:19
date last changed
2020-09-23 15:07:20
@article{2cabc40e-f5ab-4aa7-84fb-6727d5abd23e,
  abstract     = {<p>Reproductive isolation among four sympatric small ermine moths (Yponomeuta) is analyzed in terms of niches in the sexual communication channel. Potential pheromone components were identified from pheromone gland secretions of Y. evonymellus, Y. cagnagellus, Y. padelius, and Y. vigintipunctatus by gas chromatography with flame ionization and electroantennographic detection and tested for behavioral activity in the field. The species were found to share (Z)-11-tetradecenyl acetate (Z11-14: OAc) in combination with varying proportions of the E isomer as primary sex pheromone components. Y. cagnagellus differs from the rest of the species by having only a small amount (1.5%) of E isomer relative to Z isomer in its pheromone. The closely related Y. padelius has a three-component pheromone including large amounts (ca. 400%) of (Z)-11-hexadecenyl acetate (Z11-16:OAc) in addition to Z11-14: OAc (100%) and E11-14: OAc (34%). Z11-16: OAc appears to reduce trap catches of Y. evonymellus and Y. vigintipunctatus when added to the pheromone. Although these species are the two most distantly related European small ermine moths, they seem to share the same sex pheromone, i.e., Z11-14:OAc (+20%E) and (Z)-11-tetradecenol. Our interpretation is that this might have been the sex pheromone of the ancestor of today's Yponomeuta species.</p>},
  author       = {Löfstedt, Christer and van der Pers, Jan N.C.},
  issn         = {0098-0331},
  language     = {eng},
  month        = {05},
  number       = {5},
  pages        = {649--666},
  publisher    = {Springer},
  series       = {Journal of Chemical Ecology},
  title        = {Sex pheromones and reproductive isolation in four european small ermine moths},
  url          = {http://dx.doi.org/10.1007/BF00988574},
  doi          = {10.1007/BF00988574},
  volume       = {11},
  year         = {1985},
}