« Previous AbstractDNA microarray-based identification of genes controlled by autoinducer 2-stimulated quorum sensing in Escherichia coli    Next AbstractFactors involved in the post-copulatory neural inhibition of pheromone production in Choristoneura fumiferana and C. rosaceana females »

J Chem Ecol

Title:		"Changes in pheromone titer of oblique-banded leafroller,Choristoneura rosaceana, virgin females as a function of time of day, age, and temperature"
Author(s):		Delisle J; Royer L;
Address:		"Canadian Forest Service, Quebec Region, Natural Resources Canada, 1055 du P.E.P.S., P.O. Box 3800, G1V 4C7, Sainte-Foy, Quebec, Canada"
Journal Title:		J Chem Ecol
Year:		1994
Volume:		20
Issue:		1
Page Number:		45 - 69
DOI:		10.1007/BF02065990
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"Under a 16:8 hr light-dark photoperiod and 20daggerC constant temperature, the titers of (Z)-11-tetradecenyl acetate (Z11-14:Ac), (E)-11-tetradecenyl acetate (E11-14:Ac) and (Z)-11-tetradecenol (Z11-14:OH) produced by different-agedChoristoneura rosaceana virgin females varied significantly during the scotophase, with the maximum titer occurring before the onset of calling in day-0 and day-3 females, while in day-5 females the titer remained constant throughout the calling period. There was a significant decrease in the titer of all pheromone components with age, explaining the lesser attractiveness of day-5 females relative to day-0 and day-3 females observed in the field. Under a cold thermocycle simulating condition during the second flight period in the fall, the titers of all pheromone components did not vary with time of day. There was a significant decrease in the amount ofZ11-14:Ac with age but no changes occurred in the minor components. Furthermore, for any given age tested, the amount of each component produced during the period of maximal calling activity remained relatively similar at the two temperature regimes. However, as with the expression of calling behavior, pheromone production was initiated earlier at cooler than at warmer temperatures. At both temperature regimes, female age and time of day influenced the ratio of each pheromone component. These results are discussed in relation to the hypothesis that by calling earlier, less attractive older females may increase their probability of mating"
Keywords:
Notes:		"PubMed-not-MEDLINEDelisle, J Royer, L eng 1994/01/01 J Chem Ecol. 1994 Jan; 20(1):45-69. doi: 10.1007/BF02065990"