Doctoral Student
JESSE HARDIN
Advisor:
David ByrneContact Info:
Marley 724
(520)621-1708
jhardin@Ag.arizona.edu
Research and Interests:
My research centers on a keystone molecule, trehalulose, in the context of nutritional ecology at multiple trophic levels using the study system of the whitefly Bemisia tabaci (Gennadius) and its parasitoids. Trehalulose may represent an important mechanism through which whiteflies are able to meet their nutritional demands under varying environmental conditions. Based the parasitoid literature, we expected it might influence the longevity of parasitoids feeding on their honeydew but instead we have found that this is not true within our system.
An understanding of whitefly nutritional needs may help us in explaining the ability of this pest to persist under the arid conditions of the southwestern United States. Although parasitoids have been shown to be affected by feeding on insect-derived sugars, the outcome appears to be different in my system. However, the multi-trophic considerations of my research could lead to improved understandings of whitefly biology and ultimately impact integrated pest management strategies that rely on biological control practices for management of this important pest species.
Additionally, I am interested in the dispersal and migratory ability of small insects such as whiteflies and their parasitoids. This type of research has been a cornerstone of my advisor, David Bryne, and others who have worked in his lab. As a collaboration, we have been investigating multiple day movement by these insects in hopes of better understanding their movement capabilities. The outcomes of this research will better inform the practices of the agricultural and IPM community.
I have also done some previous work concerning whiteflies transmitting Geminiviruses.
Publications:
- Hardin, J. A., Asplen, M. K., Byrne, D. N. (2008) The longevity effects of trahalulose feeding by parasitoids. Physiological Entomology, in press.
Images:
Click on a thumbnail below to enlarge the images.
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| Field collection site, Fall 2002 | Balloon with upper trap, radio tower in background |
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| E. eremicus parasitoid | Adult whitefly in flight |
