Pheromone Concentration as a Mechanism for Reproductive Isolation between Two Lepidopterous Species
- 2 February 1973
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 179 (4072) , 487-488
- https://doi.org/10.1126/science.179.4072.487
Abstract
Pheromone-releasing females of the closely related noctuid moths Trichoplusia ni and Autographa californica attract mainly males of their own species. Sex-pheromone-concentration specificity appears to be an important reproductive isolating mechanism for these two species. Apparently, both species utilize the same pheromone, cis-7-dodecenyl acetate, for mating communication, but T. ni utilizes a higher level than does A. californica. Traps releasing amounts of cis-7-dodecenyl acetate that are highly attractive for males of one of the species catch very few males of the other species.Keywords
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