Abstract
The mortality of adults, eggs, larvae and pupae of the cowpea storage bruchid,Callosobruchus maculatus (Fab.) was observed in four different high carbon dioxide (CO2) in air atmospheres (88% CO2, 70% CO2, 60% CO2 and 50% CO2) at 25°C and 32°C respectively, and 70% RH. All the developmental stages ofC. maculatus were completely killed within 5 days in the 88% CO2 in air atmosphere and within 12 days in the other high CO2 atmospheres tested. The adult and egg stages were most susceptible, and the old larvae and pupae, the least susceptible to the high CO2 atmospheres. Mortality ofC. maculatus was significantly influenced by the level of CO2, stage of insect development, exposure period and temperature.
Zusammenfassung
Es wurde die Mortalität der Adulten, Eier, Larven und Puppen des ErbsensamenkäfersCallosobruchus maculatus (Fab.) bei 4 erhöhten CO2-Werten der Luft (88, 70, 60, 50%), bei 35 und 32°C und 70% rel. LF untersucht. Alle Entwicklungsstadien vonC. maculatus starben bei 88% CO2 binnen 5 Tagen und bei den tieferen CO2-Werten binnen 12 Tagen ab. Die Adulten und Eier erwiesen sich als empfindlichste Stadien. Die Mortalität vonC. maculatus wurde signifikant von der CO2-Konzentration, der Einwirkungszeit, dem Entwicklungsstadium und der Temperatur beeinflußt.
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Ofuya, T.I., Reichmuth, C. Über die Mortalität des Erbsensamenkäfers,Callosobruchus maculatus (Fab.) bei hohen Kohlendioxid-Werten. Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 66, 57–59 (1993). https://doi.org/10.1007/BF01903173
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DOI: https://doi.org/10.1007/BF01903173