Dinamica populacional de Forcipomyia spp. (Diptera, Ceratopogonidae) na Bahia, Brasil; 3: Variávéis climáticas relacionadas com a polinizacao do cacaueiro
The purpose of this study was to determine which climatic variables exercised the greatest influence on the midge population (Forcipomyia spp.) and on the natural pollination of cacao in Bahia, Brazil. The climatic variables studied were the following: maxima, minima and mean temperatures and the amplitude, relative humidity, rainfall (mm), sunshine hours, precipitation/sunshine hours (P/B), nebulosity (N/10), evaporation (PICHE), evapotranspiration (Thornthwaite), and water balance. Results indicated significant correlations 0.01 P between temperature and evapotranspiration and insect populations. Results also indicated that heat, sunshine hours, nebulosity and water balance were correlated with natural pollinations at the level of significance of 0.10 probability. It was concluded that heat, soil water availability, and air humidity closely interacted with Forcipomyia population and pollination. It was not possible to determine which of the climatic parameters is the single triggering element in the pollination process
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| Format: | biblioteca |
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1977
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| Subjects: | THEOBROMA CACAO, FORCIPOMYIA, CERATOPOGONIDAE, POLINIZADORES, EVOLUCION DE LA POBLACION, CAMBIO CLIMÁTICO, BAHIA, BRASIL, |
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