Male response to natural sex pheromone ofMigdolus fryanus westwood (Coleoptera: Cerambycidae) females as affected by daily climatic factors |
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Authors: | José Maurício S Bento Terezinha M C Della Lucia Rosa T S Frighetto |
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Affiliation: | (1) Departamento de Biologia Animal Viçosa, 36570.000, MG, Brasil;(2) CNPDA/EMBRAPA, Jaguariúna, SP, Brasil |
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Abstract: | Males of the sugarcane borer,Migdolus fryanus (Coleoptera: Cerambycidae), are attracted to females by means of a sex pheromone. Mating usually occurs during a few days from October to March under field conditions in São Paulo State, Brazil. This work reports on mating of this species as affected by daily climatic factors, during a single nuptial flight. Maximum male capture by the natural sex pheromone occurred from 10 00 to 11 00 AM at air and soil temperatures of 30.0°C and relative humidity of 57.0%. As these temperatures increased, females burrowed into the soil, as they are more sensitive to heat than males. Thus, it was concluded that sex pheromone-mediated mating in this cerambycid is directly affected by temperatures of air and soil. |
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Keywords: | Migdolus fryanus Coleoptera Cerambycidae mating behavior sex pheromone climatic factors |
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