Stinkers beware! Project Stink-be-Gone with Maryland s Master Gardeners Dr. Rebeccah Waterworth rwater@umd.edu Dr. Paula Shrewsbury pshrewsbury@umd.edu Department of Entomology University of Maryland, College Park Frederick County Master Gardeners Monthly Meeting May 8, 2018 Entomologists at UMD Applied research Pest management in green industries Training and education programs Who are we? Citizen Science: Project Stink-be-Gone Good and bad stink bugs Native and non-native species More information needed to manage bad stink bugs Project Stink-be-Gone Today, I will present: Managing stink bugs with biocontrol Results from last summer A brief project overview Good Ashley Bradford Bad David Illig Managing stink bugs Biological control (or biocontrol) Natural enemies include predators and parasitoids In Project Stink-be-Gone, we are interested in parasitoids that attack the eggs of stink bugs David R. Lance USDA APHIS PPQ David R. Lance USDA APHIS PPQ Elijah Talamas 1
Biocontrol of stink bugs in MD We need to know more! Specifically: What parasitoid species are in MD? What species of stink bugs do these parasitoids attack? Is there any apparent control of stink bugs, especially of species such as brown marmorated stink bug (BMSB)? Survey Sites No SB egg masses found 1 SB egg mass present 1 BMSB egg mass present RW s research sites in 2017 Survey Sites in MD Results: Samples No SB egg masses found 1 SB egg mass present 1 BMSB egg mass present RW s research sites in 2017 10% 8% 4% Stink bug egg masses 78% Moth egg masses Other "stuff" Bug egg masses 2
Results: Samples Host Plants of BMSB Rough SB Other Annual Trees/shrubs Perennials 6% 2% Green SB 9% 11% BMSB Euschistus spp 24% Harlequin Bug 48% Cercis canadensis (8) Acer rubrum (4) Magnolia (1) Tilia cordata (1) Paulownia tomentosa (2) Cornus racemosa (1) Pyrus calleryana (1) Red raspberry (2) Wine raspberry (2) Asclepias syriaca (1) Flowering Plants Annual, Vegetables Vines, Various Cleome (5) Tomato (1) Vitis riparia (2) Lantana (1) Pigweed* (Amaranthus) (1) Virginia creeper (1) Parasitism: unemerged wasps Parasitism: emerged wasps Predation BMSB Egg Fate Unascribed Nymphs Hatched Te. podisi Tr. brochymenae A. reduvii unknown Anastatus sp. Tr. japonicus* Exotic Parasitoid Species in MD 2017 2015-2016 Bug nymphs died in eggs ~33% of BMSB eggs died due to some form of biocontrol 3
What we would like participants to help us with How this project will benefit participants 1. More detailed information about basic biology of stink bugs 2. Training on how to scout for stink bug egg masses and stink bugs 3. Better understanding of biocontrol 4. Learn about specific biocontrol agents of stink bugs 5. Two hours of continuing education credit for participants at the training session in June 6. And you get to be outside, look at plants, and play with bugs! May June July August September Overview of the Project Volunteer recruitment 2 hours of training in each participating county 3 hours of field collection (suggested 1 hr / week for a 3 week period) 3 hours of field collection (suggested 1 hr / week for a 3 week period) Evaluation of project to be completed by participating MGs; sharing of the results New for 2018 May 6 Aug. 9 23 BMSB egg masses collected after 8/9/17 Sample Period 4
Additional Info Questions? Email contact: rwater@umd.edu http://shrewsburylab.weebly.com/project-stink-be-gone.html On the website, we have posted: Sign-up online option A to-do list (2017 version) Egg mass collection tips Extra datasheets (2017 version) Field guide to stink bugs Timely communication between participants and myself group email 5