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« Previous AbstractHerbivore- and elicitor-induced resistance in rice to the rice water weevil (Lissorhoptrus oryzophilus Kuschel) in the laboratory and field    Next AbstractIntra- and interspecific sex pheromone responses of screwworm and secondary screwworm flies »

J Chem Ecol


Title:"Chemical basis for asymmetric mating isolation between strains of screwworm fly,Cochliomyia hominivorax"
Author(s):Hammack L;
Address:"Agricultural Research Service, U.S. Department of Agriculture, Metabolism and Radiation Research Laboratory, 58105, Fargo, North Dakota"
Journal Title:J Chem Ecol
Year:1987
Volume:13
Issue:6
Page Number:1419 - 1430
DOI: 10.1007/BF01012288
ISSN/ISBN:0098-0331 (Print) 0098-0331 (Linking)
Abstract:"Laboratory mating tests and bioassays for a contact, mating-stimulant pheromone were conducted within and between two strains of the screwworm fly,Cochliomyia hominivorax. No strain or sex difference in pheromone activity occurred at emergence. However, the pheromone activity of females increased with age in one strain but declined in the other. Activity also declined in males of both strains but more steeply than in the females. Thus, sexual dimorphism in pheromone activity developed with age in both strains but to differing degrees. The decline in female pheromone activity was partly compensated for within that strain by a higher male responsiveness to pheromone. Female pheromone activity and mating success were positively correlated. Virgin females and those inseminated 24-48 hr previously were equally stimulatory. It appears that the strain differences arose from selection for reduced pheromone activity during laboratory colonization"
Keywords:
Notes:"PubMed-not-MEDLINEHammack, L eng 1987/06/01 J Chem Ecol. 1987 Jun; 13(6):1419-30. doi: 10.1007/BF01012288"

 
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