Ph.D. program, Environmental Science, Policy and Management, University of California, Berkeley Advised by Nicholas J. Mills
2004-2007: B.A. College of Creative Studies: Biology, University of California, Santa Barbara
Aquaculture, Biological control, Global Change Biology, Insect Ecology, Marine Biology, Multitrophic Interactions and Parasitology
I aspire to use biological control in combination with ecological restoration in aquatic systems to mitigate negative impacts by invasive species, and to prevent disease transmission in aquaculture. I am interested in the mechanisms responsible for the tremendous establishment and spread of some invasive species, and the lack of success for other species. Similarly, I am also interested in the multitrophic interactions and abiotic factors that determine the success of biological control programs
Success rates of biological control of insect pests depend on abiotic factors and the multitrophic interactions among plants, herbivores, and their natural enemies. Contrary to the trend for most invasive species, the invasive Light Brown Apple Moth, E. postvittana has been in decline since its initial spread in California in 2007, thus eliminating the need for classical biological control. My dissertation focuses on the multitrophic interactions and resident natural enemies involved in the natural decline of the Light Brown Apple Moth in California and provides a unique opportunity to use this knowledge to inform the approaches necessary to control other invasive or nuisance species.
1) Estimate the degree of variation in parasitism by parasitoid wasps of egg and larval stages of the Light Brown Apple Moth on different host plant species in the field and the laboratory.
2) Characterize the novel microsporidian pathogen, Nosema fumiferanae-like isolate, and its pathology in the Light Brown Apple Moth
3) Determine the occurrence and load of N. fumiferanae in field populations of the Light Brown Apple Moth using qPCR.
4) Investigate the role of low humidity, and different host plants and nutrition on the pathology of N. fumiferanae in Light Brown Apple Moth larvae.
Hopper J.V., Kuris A.M., White C., Lorda J., Koch S.E., Hechinger R.F. 2014. Reduced parasite diversity and abundance in a marine whelk in its expanded geographic range. J. Biogeography 41, 1674-1684.
Hopper J.V., Nelson E.H., Daane K.M., Mills N.J. (2011). Growth, development and consumption by four syrphid species associated with the lettuce aphid, Nasonovia ribisnigri, in California. Biological Control 58 (3) 271-276
Hopper J.V., Poulin R., Thieltges D.W. (2008). Buffering role of the intertidal anemone Anthopleura aureoradiata in cercarial transmission from snails to crabs. Journal of Experimental Marine Biology and Ecology 367, 153-156
Honors and Awards
2014 Marc Dresden Travel Award, American Society of Parasitologists
2012-14 Robert and Peggy van den Bosch Memorial Scholarship
2012-13 Outstanding GSI award, Department of Integrative Biology, UC Berkeley
2012 Northern California Parasitologists Meeting Award- research presentation
2012 Lillian and Alex Feir Graduate Student Award – ESA research presentation
2008-09 NSF GRFP: Two Honorable Mentions
GSI for ESPM 44, Biological Control, Fall 2014
GSI for ESPM 113, Insect Ecology, Spring 2014
GSI for ESPM 147, Field Entomology, Spring 2014
GSI for ESPM C107/IB 158LF, Biology and Geomorphology of Tropical Islands, Fall 2013
GSI for ES 100, Methods in Environmental Sciences, Spring 2013
GSI for Bio1B Field Section, Spring 2012
Office: Natural Resource Laboratory, #12, 1801 Walnut Street, Berkeley
Office Phone: 510-643-5903
Dept of Environmental Science, Policy, & Management
130 Mulford Hall #3114
Berkeley, CA 94720