Research articles
ScienceAsia (): 242-246 |doi:
10.2306/scienceasia1513-1874...242
Mortality of Platydema waterhousei exposed to carbon dioxide and nitrogen atmospheres
Nisakorn Intiama, Boongeua Vajarasathirab,*, Porntip Visarathanonthc, Ngamtip Poovarodomd, Surachate Jamornmarne
ABSTRACT: Platydema waterhousei is a beetle that infests the economically important Rishi mushroom. The toxic effects of four controlled atmospheres to each of the life stages of Platydema waterhousei were investigated. The atmospheres used were 100, 80, 60, and 0% CO2 with N2 making up the remainder. The atmosphere containing 80% CO2 was more toxic to eggs than pure CO2 and N2. Pure CO2 was the most lethal to larvae, pupae, and adults. Pupae were the most resistant life stage to all treated gases. Adults were more sensitive than eggs and larvae in pure CO2 and N2 atmospheres. Adults as well as eggs were more susceptible than larvae when they were exposed to 60% CO2. Eggs were more sensitive than adults and larvae when they were held under 80% CO2. The best control of all life stages could be achieved by exposing to 80% CO2 for 3 days or to 100% CO2 for 4 days.
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| a |
Office of Agricultural Research Development Region 5, Bangluang, Subphaya, Chainat 17150, Thailand |
| b |
Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand |
| c |
Department of Packaging Technology and Materials, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand |
| d |
Postharvest Technology Research and Development Group, Postharvest and Product Processing Research & Development Office, Department of Agriculture, Bangkok 10900, Thailand |
| e |
Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand |
* Corresponding author, E-mail: fscibov@ku.ac.th
Received 12 May 2008, Accepted 3 Jul 2009
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