Abstract
Periodical and age-related changes in sex pheromone signaling and response were studied in the black cutworm moth, Agrotis ipsilon. Females began to call on the first night after eclosion and called mainly during the second half of the scotophase. The percentage of females calling increased from 1- to 3-day-old females and decreased from 3- to 6-day-old females (P < 0.001). One-day-old females called later in the scotophase than 2- and 3-day- old females (P = 0.016). The quantity of Z7-12:Ac, Z9-14:Ac, and Z11-16:Ac in pheromone gland extracts of 1- to 6-day-old females varied with time of the photoregime, increasing during scotophase and decreasing during photophase (P ≤ 0.001). These oscillations were described by using equations containing angular terms with a period of 24 hr. The quantities of Z7-12:Ac and Z9- 14:Ac, but not of Z11-16:Ac, varied with female age during the calling period (P < 0.001, P = 0.021, and P = 0.529, respectively). The ratios of Z9-14:Ac and Z11-16:Ac to Z7-12:Ac did not change with age or time during calling period. Male response to female pheromone in a wind tunnel increased with age and time of the scotophase. The type of response exhibited by the males (taking flight, oriented flight, and pheromone source contact) was affected by both age and time of the scotophase (P < 0.001).
| Original language | English |
|---|---|
| Pages (from-to) | 329-342 |
| Number of pages | 14 |
| Journal | Journal of Chemical Ecology |
| Volume | 26 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2000 |
Bibliographical note
Funding Information:Acknowledgments—We thank B. Chastain, R. Dycus, J. Rogers, and S. Rose for technical assistance. Drs. M. Evenden and A. J. Moore reviewed an earlier version of this manuscript. C.G. was funded in part by a Predoctoral Fellowship from the National Institute for Agricultural Research of Spain. This material is based, in part, upon work supported by the Cooperative State Research Service, US Department of Agriculture under Agreement No. 94-37302-0613 and 97-35302-4324. The GC-MSD system was purchased, in part, by funds from the University of Kentucky major equipment program (MRES94-01-Haynes). This investigation (Paper no. 99-08-6) was conducted in connection with a project of the Kentucky Agricultural Experimental Station.
Funding
Acknowledgments—We thank B. Chastain, R. Dycus, J. Rogers, and S. Rose for technical assistance. Drs. M. Evenden and A. J. Moore reviewed an earlier version of this manuscript. C.G. was funded in part by a Predoctoral Fellowship from the National Institute for Agricultural Research of Spain. This material is based, in part, upon work supported by the Cooperative State Research Service, US Department of Agriculture under Agreement No. 94-37302-0613 and 97-35302-4324. The GC-MSD system was purchased, in part, by funds from the University of Kentucky major equipment program (MRES94-01-Haynes). This investigation (Paper no. 99-08-6) was conducted in connection with a project of the Kentucky Agricultural Experimental Station.
| Funders | Funder number |
|---|---|
| National Institute for Agricultural Research of Spain | |
| U.S. Department of Agriculture | 94-37302-0613, 97-35302-4324 |
| Cooperative State Research, Education, and Extension Service | |
| University of Kentucky | MRES94-01-Haynes |
Keywords
- Calling behavior
- Male response
- Periodicity
- Pheromone emission
- Sex pheromone
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Biochemistry