Patterns of sex pheromone release from adult females, and effects of air velocity and pheromone release rates on theoretical communication distances inTrogoderma glabrutm

1978 ◽  
Vol 4 (4) ◽  
pp. 395-408 ◽  
Author(s):  
Ted J. Shapas ◽  
Wendell E. Burkholder
Keyword(s):  
Sex Pheromone ◽  
Air Velocity ◽  
Release Rates ◽  
Pheromone Release ◽  
Adult Females ◽  
Pheromone Release Rates

Evaluation of Pheromone Dispensers for Use in Gypsy Moth Detection (Lepidoptera: Lymantriidae)2

1992 ◽  
Vol 27 (3) ◽  
pp. 280-284 ◽  
Author(s):  
B. A. Leonhardt ◽  
V. C. Mastro ◽  
E. D. DeVilbiss
Keyword(s):  
Gypsy Moth ◽  
Release Rate ◽  
Field Tests ◽  
Release Rates ◽  
Pheromone Release ◽  
Male Moth ◽  
Effective Attraction ◽  
Pheromone Dispensers ◽  
Pheromone Release Rates ◽  
Pheromone Release Rate

Seven controlled-release dispenser formulations containing 500 μg of gypsy moth pheromone (+)-disparlure, were compared in laboratory and field tests. Pheromone release rates, residual pheromone contents, and male moth captures in traps baited with the dispensers were compared following pre-aging of the dispensers in a greenhouse at 35 °C for 0, 4, 12, and 16 wk. The laminate dispenser, now used in USDA detection traps, became less attractive over time as its pheromone release rate and content dropped below the threshold values previously reported as necessary for effective attraction. A polyvinyl chloride coated twine dispenser produced high male moth captures and gave release rates and residual contents above these thresholds (30 ng/h release rate and 100 μg content) at all aging periods. The tube-A dispenser was the most effective of the new commercially prepared formulations, followed by the membrane and tube-B whose male moth captures and release rates tended to increase with aging time. The capsule and film dispensers were the least effective of the formulations tested.

scholarly journals Calling Behavior and Sex Pheromone Release and Storage in the Moth Chloridea virescens

2019 ◽  
Vol 46 (1) ◽  
pp. 10-20 ◽  
Author(s):  
Stephen P. Foster ◽  
Karin G. Anderson ◽  
Jérôme Casas
Keyword(s):  
Sex Pheromone ◽  
Calling Behavior ◽  
Pheromone Release ◽  
And Storage

Rate of Release of Rhynchophorol Pheromone in Relation to Attraction of Rhynchophorus palmarum (L.) (Coleoptera: Dryophthoridae) in Oil Palm Plantations in Colombia

2020 ◽  
Vol 55 (4) ◽  
pp. 487-498
Author(s):  
Rosa Cecilia Aldana-De La Torre ◽  
Luis Guillermo Montes-Bazurto ◽  
Alex Enrique Bustillo-Pardey
Keyword(s):  
Weight Loss ◽  
Release Rate ◽  
Oil Palm ◽  
Release Rates ◽  
Rhynchophorus Palmarum ◽  
Randomized Design ◽  
Baited Traps ◽  
Important Pest ◽  
Completely Randomized Design ◽  
Pheromone Release Rates

Abstract Rhynchophorus palmarum (L.) (Coleoptera: Dryophthoridae) is an important pest in oil palm plantations, and its populations are monitored through rhynchophorol pheromone-baited traps. To optimize the release of rhynchophorol in high-density polyethylene diffusers, five calibers (2, 3, 4, 5, and 6) were evaluated. The experiment was conducted under a completely randomized design with 15 repetitions, recording daily weight loss of pheromones. Release rate of pheromone under laboratory conditions (30.2 ± 0.1°C; 70.8 ± 0.8% relative humidity [RH]) varied between 2.2 and 10.4 mg/day. Three diffusers with 2.4 ± 0.4, 3.6 ± 0.9, and 8.5 ± 1.3 mg/day of release rates, were selected for testing in three palm-growing zones. Adults of R. palmarum captured in traps with different diffusers were counted as well as pheromone weight loss. In two of three plantations, statistical differences were found in the capture of R. palmarum adults among the diffusers that presented different pheromone release rates (Eastern: F = 8.27; df = 2, 9; P = 0.0028; Central: F = 10.79; df = 2, 9; P = 0.0008; Southwestern F= 2.20; df = 2, 9; P= 0.1402). The diffuser with the release rate of 2.4 mg/day was selected because, after remaining 4 mo in the field, the traps with this diffuser registered catches statistically equal to those that had traps with newly installed diffusers. We concluded that the release rate of the pheromone of 2.4 mg/day is optimal for the capture of adults of R. palmarum during a period of 4 mo.

A contact sex pheromone and some response parameters in lycosid spiders

1969 ◽  
Vol 47 (1) ◽  
pp. 1-4 ◽  
Author(s):  
B. M. Hegdekar ◽  
C. D. Dondale
Keyword(s):  
Sex Pheromone ◽  
Filter Paper ◽  
Sexual Response ◽  
Contact Sex Pheromone ◽  
Contact Chemoreception ◽  
Male Response ◽  
Mating History ◽  
Adult Females ◽  
Species Specific ◽  
Olfactory Cue

The sexual response of male Schizocosa crassipalpis (Emerton), S. avida (Walckenaer), Pardosa moesta Banks, and P. saxatilis (Hentz) to filter paper discs previously exposed to females was studied in the laboratory. Evidence indicates that the females secrete a nonvolatile substance which the males receive through contact chemoreception and which excites them sexually. Attempts to demonstrate an olfactory cue in the sexual response were unsuccessful. The substance was found to be species specific except in S. crassipalpis. It was produced by adult females regardless of age or mating history. Male response was similarly not affected. The substance was active for about 4 weeks. It was labile to treatment with ether or benzene and could not be extracted with either solvent. The sites of its secretion and perception have not been ascertained.

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