Ph.D. Students and Postdoctoral Scientists in the Laboratory
The use of controlled atmospheres for the disinfestation of insect pests in fresh fruit, vegetable, and floral commodities has been studied for quite some time. However, the basic mode of action of elevated carbon dioxide on insects is still unknown. Therefore, the main objective of my research is to better understand the mode of action of controlled atmospheres, specifically the effects of elevated carbon dioxide, on insects.
My research will improve our understanding of insect response to hypercarbia and hypoxia. Investigation into the role of membrane permeability and subsequent cascade effects will further our understanding of the effect of elevated carbon dioxide in insects. My work to determine the effect of CO2 on aging can impact insect physiology by better understanding the mediators, hormones, which affect the physiological response of insects under stress. In addition, the impact of a better understanding about process of aging in insects has far reaching results that could benefit researchers working on aging in Drosophila, nematode, and human systems.
The societal impact of this research, by investigating an alternative to methyl bromide fumigation, is the continuation of U.S. competitiveness in international agriculture and trade. My research can provide knowledge to facilitate the commercial application of controlled atmospheres, developing a rapid method to determine effective postharvest and quarantine treatments.
I am a post graduate researcher, working on the biological control of Varroa mites with Hirsutella thompsonii.
This mite Varroa destructor is an ecto-parasite mite originally associated with the Asian honeybee Apis cerana. It is currently not a problem to the Asian honeybee but to the new host honeybee Apis mellifera. In the United States, at this time only Apistan (fluvalinate) is registered for use in controlling this mite. However, after years use of the chemical pesticides, mites develop resistance to the pesticides. Alternative control agents are urgently needed for the beekeepers throughout the world.
My on-going project is trying to find a Hirsutella thompsonii isolate which could tolerate 34°C (beehive temperature). The selected isolate should also be safe to bees, environmentally sound, and easy to produce in large scale. The formulation of the new product should also easy to handle with long shelf life. A better understanding of the biology and morphology of the mite and the fungi is crucial to the success of this goal.
Education and Working Experience:
- 06/30/2001 to present: Post graduate researcher.
- 08/24/1998—05/30/2001--- Graduate student in plant protection and pest management in UC Davis.
- 12/4/96---08/24/98: As a private edible fungi advisor in Bay area, San Francisco.
- 5/1994---12/4/96: Project leader, working on the standardization of fungi product Beauveris bassinia in China, in General Station of Forest Pest Control, Ministry of Forestry, China.
- 9/1993-12/1993: Advanced training in " the expression of toxic gene of B. t. in E. coli", at Bio-science Lab of Ministry of Agriculture, China.
- 1/1991-1/1996: Vice project leader: Working on the IPM of Japanese beetle , in General Station of Forest Pest Control.
- 4/1989-1/1991: Working on the IPM of elm leaf beetle and studying the IPM of Forest Pest at UC. Berkeley.
- 7/1987-5/1989: Research assistant; working on the control of pine caterpillar, in General Station of Forest Pest Control.
- 5/1987-7/1987: Research assistant; guiding farmers to produce edible fungi.
- 8/1983-5/1987: Research assistant; working on pine wilt disease, in Forest Plant Quarantine Institute, Ministry of Forestry, China.
- 9/16/1979-8/15/1983: Undergraduate student in Dept. of Soil Science, Major in Agriculture Microbiology in Huazhong Agriculture University. B.Sc. gained on July 3, 1983.
- The Studying on Using Entomopathogenic Nematode to Control White Grub Blitopertha pallidipennis Reitter. Forest Pest and Disease, No 3: 14-16, 1996
- Bioassay of entomopathogenic fungi Beauveria bassiana and its usage in the standardization of the fungi products. Forest Pest and Disease, No 2: 1-3, 1996
- Factors affecting the bioassay of B. t. products, Forest Pest and Disease, No 3:27-30, 1994
- A preliminary study on the pre-treatment of entomopathogenic fungi Beauveria bassiana to enhance its pathogenicity. Programs and Abstracts, Sixth National Symposium on Desinsectional Microorganism of China 4: 02-05, p140; 199
- Application of using electrostatic duster to control pine caterpillar, Forest Research, Vol. 8mem, p195, 1995
- IPM of white grub Blitopertha pallidipennis Reitter. Forest Pest and Disease, No. 3:35-37, 1993
- The biological effect of M-one (B. t. i.) on lady beetle Olla abdominalis, Forest Pest and Disease, No.2: 19-20, 1992