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Individual variation in the pheromone of the turnip moth, Agrotis segetum

Löfstedt, Christer LU ; Lanne, Boel S. ; Löfqvist, Jan ; Appelgren, Monica and Bergström, Gunnar (1985) In Journal of Chemical Ecology 11(9). p.1181-1196
Abstract

Female turnip moths (Agrotis segetum) from a laboratory culture inbred for more than 30 generations, and the offspring (first and third generation) from field-collected insects were analyzed individually for acetates and alcohols in the pheromone gland. Quantitative analysis of individual components was performed at the subnanogram level by gas chromatographymass spectrometry (selected ion monitoring). The titer of the pheromone, i.e., the sum of the homologous acetates (Z)-5-decenyl acetate, (Z)-7-dodecenyl acetate, and (Z)-9-tetradecenyl acetate was 2.0 ± 0.3 ng in the laboratory culture and 3.2 ± 0.6 ng in the "wild strain." There was no correlation between pheromone titer and female weight. The relative proportion of the pheromone... (More)

Female turnip moths (Agrotis segetum) from a laboratory culture inbred for more than 30 generations, and the offspring (first and third generation) from field-collected insects were analyzed individually for acetates and alcohols in the pheromone gland. Quantitative analysis of individual components was performed at the subnanogram level by gas chromatographymass spectrometry (selected ion monitoring). The titer of the pheromone, i.e., the sum of the homologous acetates (Z)-5-decenyl acetate, (Z)-7-dodecenyl acetate, and (Z)-9-tetradecenyl acetate was 2.0 ± 0.3 ng in the laboratory culture and 3.2 ± 0.6 ng in the "wild strain." There was no correlation between pheromone titer and female weight. The relative proportion of the pheromone components varied substantially between individuals, but there was no statistically significant difference between the two populations. The percentages of the respective compounds (-X ± coefficient of variation) were 14.8 ± 127% for Z5-10:OAc, 55.6 ± 32% for Z7-12:OAc, and 29.6 ± 59% for Z9-14:OAc. The pheromone composition varied more in the wild strain than in the laboratory culture. The significance of the pheromone variation to the attraction of males was tested in a field experiment. The ratio of males trapped by the most attractive blend versus the least attractive one was 2.2.

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Contribution to journal
publication status
published
subject
keywords
(Z)-5-decenyl acetate, (Z)-7-dodecenyl acetate, (Z)-9-tetradecenyl acetate, Agrotis segetum, individual variation, Lepidoptera, Noctuidae, sex pheromone, turnip moth
in
Journal of Chemical Ecology
volume
11
issue
9
pages
1181 - 1196
publisher
Springer
external identifiers
  • scopus:0005973205
ISSN
0098-0331
DOI
10.1007/BF01024107
project
Evolutionary mechanisms of pheromone divergence in Lepidoptera
language
English
LU publication?
yes
id
28c581cb-041e-4b39-8e9e-7e85ba573dba
date added to LUP
2020-07-23 15:47:50
date last changed
2020-09-23 15:07:21
@article{28c581cb-041e-4b39-8e9e-7e85ba573dba,
  abstract     = {<p>Female turnip moths (Agrotis segetum) from a laboratory culture inbred for more than 30 generations, and the offspring (first and third generation) from field-collected insects were analyzed individually for acetates and alcohols in the pheromone gland. Quantitative analysis of individual components was performed at the subnanogram level by gas chromatographymass spectrometry (selected ion monitoring). The titer of the pheromone, i.e., the sum of the homologous acetates (Z)-5-decenyl acetate, (Z)-7-dodecenyl acetate, and (Z)-9-tetradecenyl acetate was 2.0 ± 0.3 ng in the laboratory culture and 3.2 ± 0.6 ng in the "wild strain." There was no correlation between pheromone titer and female weight. The relative proportion of the pheromone components varied substantially between individuals, but there was no statistically significant difference between the two populations. The percentages of the respective compounds (-X ± coefficient of variation) were 14.8 ± 127% for Z5-10:OAc, 55.6 ± 32% for Z7-12:OAc, and 29.6 ± 59% for Z9-14:OAc. The pheromone composition varied more in the wild strain than in the laboratory culture. The significance of the pheromone variation to the attraction of males was tested in a field experiment. The ratio of males trapped by the most attractive blend versus the least attractive one was 2.2.</p>},
  author       = {Löfstedt, Christer and Lanne, Boel S. and Löfqvist, Jan and Appelgren, Monica and Bergström, Gunnar},
  issn         = {0098-0331},
  language     = {eng},
  month        = {09},
  number       = {9},
  pages        = {1181--1196},
  publisher    = {Springer},
  series       = {Journal of Chemical Ecology},
  title        = {Individual variation in the pheromone of the turnip moth, Agrotis segetum},
  url          = {http://dx.doi.org/10.1007/BF01024107},
  doi          = {10.1007/BF01024107},
  volume       = {11},
  year         = {1985},
}