TY - JOUR
T1 - Individual variation and repeatability of sex pheromone emission of female turnip moths Agrotis segetum
AU - Svensson, Mats G.E.
AU - Bengtsson, Marie
AU - Löfqvist, Jan
N1 - The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Animal Ecology (Closed 2011) (011012001)
PY - 1997
Y1 - 1997
N2 - Individual variation of the female sex pheromone signal in Agrotis segetum was determined by gas chromatographic analysis. The individuals varied extensively, both in absolute and relative amounts of the three major pheromone components; Z5-10:OAc, Z7-12:OAc and Z9-14:OAc. Within individuals there was a strong correspondence between the sex pheromone gland content and the signal actually emitted. Both pheromone amounts and proportions of components were correlated with effluvia and extracts; with coefficients of 0.55 for total amounts and 0.66 for proportions. In addition, the repeatability of emitted pheromone components by individual females over three calling periods was high, with correlation coefficients between 0.43 and 0.72. Variation among individual females, however, was observed. There were no significant differences between wild-collected and laboratory-reared females in average ratios of the major pheromone components in pheromone gland extracts, only in total amounts. The biological significance of the interindividual variation among females is discussed in the context of population dynamics and sexual selection.
AB - Individual variation of the female sex pheromone signal in Agrotis segetum was determined by gas chromatographic analysis. The individuals varied extensively, both in absolute and relative amounts of the three major pheromone components; Z5-10:OAc, Z7-12:OAc and Z9-14:OAc. Within individuals there was a strong correspondence between the sex pheromone gland content and the signal actually emitted. Both pheromone amounts and proportions of components were correlated with effluvia and extracts; with coefficients of 0.55 for total amounts and 0.66 for proportions. In addition, the repeatability of emitted pheromone components by individual females over three calling periods was high, with correlation coefficients between 0.43 and 0.72. Variation among individual females, however, was observed. There were no significant differences between wild-collected and laboratory-reared females in average ratios of the major pheromone components in pheromone gland extracts, only in total amounts. The biological significance of the interindividual variation among females is discussed in the context of population dynamics and sexual selection.
KW - effluvia entrainment
KW - repeatability
KW - individual variation
KW - Agrotis segetum
KW - Lepidoptera
KW - (Z)-5-decenyl acetate
KW - (Z)-7 dodecenyl acetate
KW - sex pheromone
KW - (Z)-9-tetradecenyl acetate
U2 - 10.1023/B:JOEC.0000006454.84415.5f
DO - 10.1023/B:JOEC.0000006454.84415.5f
M3 - Article
SN - 1573-1561
VL - 23
SP - 1833
EP - 1850
JO - Journal of Chemical Ecology
JF - Journal of Chemical Ecology
IS - 7
ER -