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Julie Hopper

Julie Hopper

Graduate Student

(510) 643 5903

My research interests include parasitology, marine biology, insect ecology and biological control. I aspire to use biological control in aquaculture or of marine invasive species in the future. I believe that we can make aquaculture more sustainable and healthy to consume than it currently is.

My dissertation focuses on the Australian Light Brown Apple Moth, Epiphyas postvittana, and its natural enemies in California. Since its discovery and initial spread in California in 2007, this invasive moth has been in decline, contrary to the trend for most invasive species. Typically, invasive species are released from natural enemies, such as parasites, permitting successful population growth in their new regions. To understand this phenomenon, I study interactions between nutritional and defensive qualities of host plants and the resident parasitoid wasps and parasites that attack this moth in California.


1) Estimate the degree of variation in parasitism by parasitoid wasps of egg and larval stages of the Light Brown Apple Moth on different plant species in the field and the laboratory.

2) Determine the prevalence of infection of Light Brown Apple Moth larvae by a microsporidian parasite in field populations and its pathology.

3) Investigate the role of different host plants and nutrition on the pathology of the microsporidian parasite in Light Brown Apple Moth larvae.

Me, in the field with my 9 different plants, studying tritrophic interactions

Nosema fumiferanaes-like isolate (parasitic microsporidian species) in an infected E. postvittana larva



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 (DOI: 10.1111/jbi.12329).

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

For my full CV click here (pdf)


Department of Environmental Science, Policy and Management
University of California, Berkeley
137 Mulford Hall
Berkeley, CA 94720-3114

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