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Identification of a sex pheromone produced by sternal glands in females of the caddisfly Molanna angustata Curtis.

Löfstedt, Christer LU ; Bergmann, Jan; Francke, Wittko; Jirle, Erling LU ; Hansson, Bill and Ivanov, Vladimir (2008) In Journal of Chemical Ecology 34(2). p.220-228
Abstract
In the caddisfly Molanna angustata, females produce a sex pheromone in glands with openings on the fifth sternite. Gas chromatographic analyses of pheromone gland extracts with electroantennographic detection revealed four major compounds that stimulated male antennae. These compounds were identified by means of gas chromatography-mass spectrometry and enantioselective gas chromatography as heptan-2-one, (S)-heptan-2-ol, nonan-2-one, and (S)-nonan-2-ol in the approximate ratio of 1:1:4:10, respectively. Field tests showed that the mixture of the two alcohols was attractive to males whereas addition of the corresponding ketones reduced trap catches. The sex pheromone of M. angustata, a species in the family Molannidae within the... (More)
In the caddisfly Molanna angustata, females produce a sex pheromone in glands with openings on the fifth sternite. Gas chromatographic analyses of pheromone gland extracts with electroantennographic detection revealed four major compounds that stimulated male antennae. These compounds were identified by means of gas chromatography-mass spectrometry and enantioselective gas chromatography as heptan-2-one, (S)-heptan-2-ol, nonan-2-one, and (S)-nonan-2-ol in the approximate ratio of 1:1:4:10, respectively. Field tests showed that the mixture of the two alcohols was attractive to males whereas addition of the corresponding ketones reduced trap catches. The sex pheromone of M. angustata, a species in the family Molannidae within the suborder Integripalpia, is similar to the pheromones or pheromone-like compounds previously reported from six other trichopteran families, including members of the basal suborder Annulipalpia. This suggests that minimal evolutionary change of the pheromone chemistry has taken place within the leptoceroid branch of integripalpian Trichoptera compared to the ancestral character state. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Chemical Ecology
volume
34
issue
2
pages
220 - 228
publisher
Springer
external identifiers
  • pmid:18213499
  • wos:000253050600012
  • scopus:39149086673
ISSN
1573-1561
DOI
10.1007/s10886-007-9418-7
language
English
LU publication?
yes
id
b9aac63d-df15-4deb-962e-569911699be6 (old id 1021175)
date added to LUP
2008-02-19 14:27:36
date last changed
2017-01-01 05:39:36
@article{b9aac63d-df15-4deb-962e-569911699be6,
  abstract     = {In the caddisfly <i>Molanna angustata</i>, females produce a sex pheromone in glands with openings on the fifth sternite. Gas chromatographic analyses of pheromone gland extracts with electroantennographic detection revealed four major compounds that stimulated male antennae. These compounds were identified by means of gas chromatography-mass spectrometry and enantioselective gas chromatography as heptan-2-one, (S)-heptan-2-ol, nonan-2-one, and (S)-nonan-2-ol in the approximate ratio of 1:1:4:10, respectively. Field tests showed that the mixture of the two alcohols was attractive to males whereas addition of the corresponding ketones reduced trap catches. The sex pheromone of M. angustata, a species in the family Molannidae within the suborder Integripalpia, is similar to the pheromones or pheromone-like compounds previously reported from six other trichopteran families, including members of the basal suborder Annulipalpia. This suggests that minimal evolutionary change of the pheromone chemistry has taken place within the leptoceroid branch of integripalpian Trichoptera compared to the ancestral character state.},
  author       = {Löfstedt, Christer and Bergmann, Jan and Francke, Wittko and Jirle, Erling and Hansson, Bill and Ivanov, Vladimir},
  issn         = {1573-1561},
  language     = {eng},
  number       = {2},
  pages        = {220--228},
  publisher    = {Springer},
  series       = {Journal of Chemical Ecology},
  title        = {Identification of a sex pheromone produced by sternal glands in females of the caddisfly <i>Molanna angustata</i> Curtis.},
  url          = {http://dx.doi.org/10.1007/s10886-007-9418-7},
  volume       = {34},
  year         = {2008},
}