Factors affecting the emergence of Hypothenemus hampei (Coleoptera: Scolytidae) from coffee berries
Emergence of coffee berry borer, Hypothenemus hampei (Ferrari), from infested coffee berries (Coffea arabica) was studied in the laboratory under controlled temperature and relative humidity (RH) regimes. Low humidities (<60 percent RH, 25°C) provoked rapid evacuation of adults. Emergence was at a minimum at 90 percent RH. A steady increase in emergence occurred at values from 90 to 100 percent RH. Emergence was low below 20°C (90 and 100 percent RH) and increased markedly between 20 and 25°C. There was no significant increase in emergence above 25°C. Using a simple flight event recorder, emergence flight times were found to peak at the time of maximum daily ambient temperatures on successive days. Under constant temperature conditions successive peaks of emergence were not seen. Results are discussed in relation to control and sampling procedures
| Main Authors: | , , , |
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| Format: | biblioteca |
| Published: |
1992
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| Subjects: | COFFEA ARABICA, HYPOTHENEMUS HAMPEI, INSECTOS DEPREDADORES DE LOS FRUTOS, INFESTACION, CICLO VITAL, HUMEDAD RELATIVA, FACTORES AMBIENTALES, |
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