Dr. Angela Gradish - Post Doctoral Fellow
In 2003, I graduated from Western University with a B.Sc. in Zoology. Later, I went on to complete my M.Sc. (thesis title: Non-target effects of pesticides on biological control agents and pollinators used in greenhouse vegetable production) and Ph.D. (thesis title: Phylogeography, population genetic structure, and conservation of two North American arctic (Oeneis spp.) butterflies) in the School of Environmental Sciences, University of Guelph. I’ve been working as a postdoctoral fellow in the Scott-Dupree lab since September, 2014.
My entomological research interests broadly include molecular ecology, conservation genetics, insecticide toxicology, and integrated pest management. I have extensive experience working with bumble bees, in both toxicological and behavioural contexts. My current research primarily focusses on developing semi-field methods for assessing the risks of pesticides to bumble bees. I’m also investigating chemical control options for the brown marmorated stink bug (Halyomorpha halys). When I’m not in the lab, I spend my time drawing and going on adventures with my beagles, Baxter and Charlie.
A. E. Gradish, G. W. Otis, and N. Keyghobadi. 2015. Population genetic structure and genetic diversity of the threatened White Mountain arctic butterfly (Oeneis melissa semidea). Conservation Genetics. 16: 1253-1264. doi: 10.1007/s10592-015-0736-y
A. E. Gradish and G. W. Otis. 2015. Notes on the demography, life history, and behavior of the White Mountain arctic butterfly (Oeneis melissa semidea). Journal of the Lepidopterists’ Society. 69: 108-113. PDF Online
Dr. Andrew Frewin - Post Doctoral Fellow
My primary research interests are integrated pest management and the health of beneficial arthropods including natural enemies, biocontrol agents and pollinators. I have previously conducted research related to these themes in both field and greenhouse cropping systems. Recently, I completed my PhD at the University of Guelph working on incorporating DNA barcoding into various levels of integrated pest management. Currently, I am working in the CSD lab on a project to develop standardized laboratory and semi-field methods for evaluating the effects of agricultural chemicals on the alfalfa leafcutting bee, Megachile rotundata.
Frewin, A.J., Scott-Dupree, C.D., Murphy, G., Hanner, R. 2014. Demographic trends in mixed biotype populations of Bemisia tabaci (Hemiptera: Aleyrodidae) in commercial poinsettia under biological control- and chemical- based management. Journal of Economic Entomology 107: 1150-1155. doi: 10.1603/EC13521
Frewin, A.J., Schaafsma, A.W., Hallett, R.H. Susceptibility of Aphelinus certus (Hymenoptera: Aphelinidae) to neonicotinoid seed treatments used for soybean pest management. 2014. Journal of Economic Entomology 107:1450-1457. doi: 10.1603/EC13523
Jason Lemay - M.Sc.Candidate
Jason is currently completing his Master’s of Science under the supervision of Dr. Mary Ruth McDonald and Dr. Cynthia Scott-Dupree. Jason’s current research is focused on the integrated pest management of the carrot rust fly (Psila rosae). Part of his research focus is on evaluating different insecticide application methods (i.e. foliar, in-furrow drench, and seed treatments) for their effectiveness to control carrot rust fly. Furthermore, Jason is studying the diversity of carrot rust fly natural enemies within the Holland Marsh (Bradford, Ontario) to determine if the IPM program currently in place influences natural enemy populations. The final component of Jason’s research involves the influence of abiotic stressors on carrot rist fly populations. The determination of a relationship between weather trends and adult fly activity as well as the influence of soil properties on larval mortality are important towards establishing a complete IPM program. Jason completed an undergraduate degree in Environmental Sciences as the University of Guelph before beginning his MSc in 2014.
Jason has been fascinated with entomology since he was young and developed a passion for pest management while working as an ornamental nursery scout for Landscape Ontario. Studying pest management allows him to combine his passion for entomology along with his passion for the outdoors in an applied manner. He wishes to pursue further research opportunities insect biology or pest management, to continue to explore his passion for insects and the outdoors.
Tara Celetti - M.Sc. Candidate
I received my BSc Honours Biology from Carleton University in 2013. Afterwards I travelled around Southeast Asia before a three month volunteering excursion at an orphanage in Tamil Nadu, India. I decided to continue my travels by moving to South Korea where I taught English for a year. While away, I realised I wanted to pursue my Master’s and the research being done in this lab caught my eye. Currently, the focus of my research is contributing to the development of standardized semi-field methods in order to evaluate the risk of pesticide exposure for the common eastern bumble bee (Bombus impatiens). Overall, my goal for obtaining an MSc is to further my understanding in the fields of environmental science, entomology and toxicology. I would love to pursue a career that can combine the knowledge I gain from this experience and apply it to future research in bumble bee conservation.
Zach Telfer - M.Sc. Candidate
Zach is a M.Sc. candidate in the School of Environmental Sciences, University of Guelph, Ontario supervised by Dr. Mary Ruth McDonald and Dr. Cynthia Scott-Dupree. His current research is focused on improving management of the carrot weevil. This project aims to assess the established carrot weevil Integrated Pest Management program, improve chemical control of the carrot weevil, and assess the Holland Marsh for carrot weevil natural enemies.
Zach received his B.Sc. from the University of Guelph where he focused on entomology and Integrated Pest Management (IPM). His undergraduate thesis, supervised by Dr. Rebecca Hallett and Dr. Justin Renkema, assessed the potential for a commercially available biological control agent to reduce spotted wing drosophila infestations.
J.M. Renkema, Z. Telfer, T. Gariepy, and R.H. Hallett. 2015. Dalotia coriaria as a predator of Drosophila suzukii: functional responses, reduced fruit infestation and molecular diagnostics. Biological Control, 89: 1-10. doi: 10.1016/j.biocontrol.2015.04.024
Kaelyn Hunter - M.Sc. Candidate
Kaelyn is an MSc student in the School of Environmental Science. She is studying the efficacy of insecticides for control of brown marmorated stink bug (Halyomorpha halys) adult and nymphs, an invasive pest quickly spreading across Ontario. She earned her Bachelor of Science in Environmental Biology at the University of Guelph in 2015. She completed two undergraduate thesis projects; the first studying the impact of freeze-thaw cycles on Cerotoma trifurcata and the second studying the direct contact toxicity of imidacloprid to Bombus impatiens.
Kaelyn also has a keen interest in international development. She has completed internships at multiple non-profit organizations in Canada, Kenya and Peru and travelled throughout India with the University of Guelph’s Semester Abroad program. She is interested in pursuing a career in agricultural research and community development, either in Canada or abroad.
MacKenzie Plommer - MES Candidate
Mackenzie is an MES student in the School of Environmental Science. She is studying the effects of high tunnel greenhouse production on pests and diseases of high-value organic vegetable crops in Southern Ontario. She completed her Bachelor of Science in Agriculture at the University of Guelph in 2015. Afterwards, was immediately interested in continuing her education at the University of Guelph through graduate school. Having Cynthia Scott-Dupree as an undergraduate professor intrigued her interest in agricultural research in entomology and Integrated Pest and Disease Management.
Mackenzie has had a love for the outdoors and agriculture as a young girl and continued to chase her dreams in this field of study as she grew older. Studying pest and disease management in plant agriculture allows her to combine her passion and interest in the agricultural industry while broadening her knowledge in the topics and issues of environmental science. Overall, her goal for obtaining an MES is to expand her knowledge and research skills to pursue a career in agricultural research.
I am a 4th year student majoring in Zoology at the University of Guelph. My interests lie in entomology, including all aspects such as, IPM, curation, conservation, and research. My current project is on Ambrosia Beetles, a pest of growing interest in high density apple orchards.
I graduated from the University of Guelph with a B.Sc. Honours in zoology. For the Summer of 2016 I am working on a field study with alfalfa leafcutter bees. I hope to be starting my M.Sc. in Dr. Scott-Dupree's lab in September 2016 working on toxicological studies involving the alfalfa leafcutter bee. I have a lifelong passion for entomology which i hope to follow into integrative pest management or rearing insects for human consumption.
Tyler is a research assistant in Dr. Scott-Dupree’s lab in the School of Environmental Sciences. He is specifically involved with projects involving the development of risk assessment methodology for the common eastern bumblebee (Bombus impatiens), and the efficacy of insecticides to control the invasive insect pest, the brown marmorated stink bug (Halyomorpha halys). He completed his B.Sc. in Toxicology at the University of Guelph in 2016, and hopes to pursue a M.Sc. in the coming year with a focus in ecotoxicology specific to distribution and risk assessment in aquatic or agricultural environments.
Makhdzir Mardan (Ph.D.). Thermoregulation in the Asiatic Giant Honey Bee, Apis dorsata (Hymenoptera: Apidae). 1984 - 1989. Committee member.
Karen Bull-Romel (M.Sc.). The reproductive biology and behaviour of the Greater Wax Moth, Galleria mellonella (L.), and a re-revaluation of the male sex pheromone. 1988 - 1991. Supervisor.
John S.K. Mbaya (Ph.D.). Resource hoarding and defensive behaviours of African honey bees (Apis mellifera L.) in Kenya. 1988 - 1993. Committee member.
Zhi-yong Huang (Ph.D.). Mechanism of hypopharyngeal gland activation by brood of honey bees (Apis mellifera L.). 1988. Committee member.
Barbara Dawicke (M.Sc.). A comparison of the migration and reproduction of the honey bee tracheal mite (Acarapis woodi (Rennie)) in drone and worker honey bees (Apis mellifera L.). 1991. Co-supervisor.
Huarong Lin (M.Sc.). A comparison of resistance in Buckfast and Canadian stocks of honey bees (Apis mellifera L.) to infestation by honey bee tracheal mites (Acarapis woodi (Rennie)). 1992. Co-supervisor.
Mauricio Montes-Castillo (M.Ag.). Non-thesis. 1992. Committee member.
Dennis Van Engelsdorp (M.Sc.). A field evaluation of nine genetic lines of bees for tracheal mite resistance and other economically important traits. September 1992 - April 1995. Committee member.
Hai Yu (Ph.D.). Relationships of epidemiological factors, Gliocladium roseum, and bee vectors to gray mold on raspberry caused by Botrytis cinerea. September 1992 - July 1996. Committee member.
Soesilawati Hadisoesilo (Ph.D.). A comparative study of two species of cavity nesting honey bees of Sulawesi, Indonesia. September 1992 - June 1997. Co-supervisor.
Julie A. McCarthy (M.Sc.). The effects of insect pollination on the seed set and seed viability of American ginseng (Panax quinquefolium L.). September 1993 - April 1996. Supervisor.
Yonghong Tang (Ph.D.). Withdrew due to personal problems. September 1993 - September 1998. Committee member.
Hannah Wittick Fraser (M.Sc.). Behavioural analyses of the volatile sex pheromone components released by the male greater wax moth, Galleria mellonella (L.) (Lepidoptera: Pyralidae). September 1994 - April 1996. Supervisor.
Rachel Cheverie (M.Sc.). Resistance management strategies for the use of Newleaf™ potatoes (Solanum tubarosum L.) for the control of Colorado potato beetle (Coleoptera: Chrysomelidae). September 1995 - April 1997. Committee member.
Jasna Krajl (M.Sc.). Selection of honey bees with rapid development as a component to Varroa mite resistance. September 1996 - July 1998. Committee member.
Jennifer K. MacIntyre (M.Sc.). Biology and control of Acalymma vittatum (Fabricius), the striped cucumber beetle, in southwestern Ontario. September 1998 - July 2000. Co-supervisor.
Christy A. Hoepting (M.Sc.). Pesticide interactions in the management of onion maggot, Delia antiqua (Meigen) and onion smut, Urocystis cepulae Frost, in Ontario. September1998 - June 2001. Co-supervisor.
Elizabeth Wanja (Ph.D.). Host plant resistance in eight Okra (Abelmoscus esculentus (L.) Moench: Malvaceae) varieties. September 1998 - August 2002. Committee member.
Terri Jones (M.Sc.). Use of greenhouse microclimate to optimize the effectiveness of biological and biocide control measures for integrated pest management of thrips on greenhouse cucumber. September 1999 - April 2002. Co-supervisor.
Sean Westerveld (M.Sc). The development of nutrient management plans and integrated crop management programs for onions, carrots and cabbage in Ontario. September 1999 - May 2002. Co-supervisor.
Gwynne McAneney Lannen (M.Sc.). Honey bee (Apis mellifera L.) drone size and its effects on aspects of male fitness. September 2000 - April 2004. Committee member.
Janisse C. Bailey (M.Sc.). Evaluation of a new insecticide and alternative strategies for control of European Corn Borer with minimal impact on honey bees foraging in sweet corn. September 2001 - January 2004. Supervisor.
Jennifer K. MacIntyre Allen (Ph.D.). Identification of insecticide resistance and development of an enhanced integrated management program for onion thrips attacking onions in southwestern Ontario. September 2000 - May 2004. Co-supervisor.
G. Chris Cutler (Ph.D.). Potential utility of novaluron in Colorado Potato Beetle, Leptinotarsa decemlineata (Say), management. September 2002 - March 2006. Supervisor.
Sarah (McCann) Jandricic (M.Sc.). Atheta coriaria Kraatz, a potential biological control agent of fungus gnats in greenhouse floricultural crops. January 2003 - April 2005. Co-supervisor.
Amanda King (M.Sc.). Impact of agricultural managements systems of canola on wild pollinator abundance and diversity. September 2003 - September 2005. Supervisor.
Zhara Moineddin (M.Sc.). The potential of novel seed treatments to control the onionsmut-onion maggot complex on onions in Ontario. January 2004 - December 2006. Co-supervisor.
Kathryn Carter (Part-time M.Sc.). Novel reduced-risk biopesticides to control insect pests of apples and their potential impact on associated biological control agents. January 2004 - May 2006. Supervisor.
Lisa Conroy (M.Sc.). The development of a greenhouse floriculture IPM program for insecticide tolerant strains of serpentine leafminer. January 2006 - May 2008. Supervisor.
Peter Unger (M.Sc.). Genotypic effects on four behavioural traits of evolutionary and economic importance in honey bees (Apis mellifera L.). January 2006 – March 2009. Committee member.
Angela Gradish (M.Sc.). Potential side-effects of fungicides on three biological control agents and pollinators used in greenhouse vegetable agroecosystems. September 2006 - January 2009. Co-supervisor.
David Cheung (M.Sc.). A digital guide to nursery landscape pests of Ontario - Simplifying insect identification with the power of digital tools. September 2007 - July 2011. Committee member.
Krilen Ramanaidu (M.Sc. - Nova Scotia Agricultural College/Dalhousie University). IPM potential of novel reduced-risk insecticides for control of blueberry spanworm on wild blueberries. Co-Supervised with Dr. Chris Cutler (Faculty, NSAC). September 2008 - August 2010. Committee member.
Hanh D. Pham (Ph.D.). Characterizing the importance of honey bees and other insects in the pollination of longan and peanut in Vietnam. September 2008 - present. Committee member.
Pradeep Nampoothiry (M.Sc.). Reduced risk biochemical biopesticides as attractants and repellants for the mitigation of house flies in organic dairy operations. September 2008 - April 2011. Supervisor.
Wendy Romero (M.Sc.). Development of control strategies for insect pests associated with vegetative propagation materials used in floricultural greenhouses. January 2009 - April 2011. Supervisor.
Kristy Grigg McGuffin (M.Sc.). Managing codling moth insecticide resistance in southwestern Ontario pome fruit. January 2009 - April 2011. Supervisor.
Caleigh Irwin (M.Sc.). Potential of cyazypyr as a seed treatment on canola for the control of flea beetles and its non-target effect on honey bee foragers. January 2009 - July 2011. Supervisor.
Murali Mohan Ayyanath (Ph.D.). Hormetic dose-response in green peach aphid, Myzus persicae, exposed to imidacloprid. January 2010 – July 2013. Co-supervisor with Chris Cutler – Dalhousie University.
Meghann Waite (M.Sc.). Developing new strategies to improve the efficacy of the predatory buy Orius insidiosus for biological control of Frankliniella occidentalis (Western flower thrips) in greenhouse ornamental crops. September 2010 – December 2012. Co-supervisor - Dr. Michael Brownbridge (VRIC).
Laura Hewitt (M.Sc.). Influence of seasonal greenhouse climate on the use of the predatory mites - Amblyseius swirskii and Neoseiulus cucumeris, for pest management practices developed for Western flower thrips in greenhouse ornamental crops. September 2010 – January 2013. Co-supervisor - Dr. Les Shipp (AAFC).
Andrew Frewin (Ph.D.). The use of DNA barcoding in plant pest monitoring. January 2011 – March 2015. Co-supervisor with Robert Hanner (Integrative Biology).
Hanan Gashout (Ph.D.). Effects of synthetic and natural acaracides on Varroa destructor and on the behavior and natural resistance of honey bees. September 2010 - present. Committee member.
Maryam Sultan (M.Sc.). The use of sterile leafminers and Diglyphus isaea to control leafminer pests in ornamental greenhouse operations. September 2012 – April 2015. Advisor.
Justine Shiell (M.Sc.). Management of pest flies in poultry production facilities. May 2013- September 2015. Co-Advisor with Simon Lachance (Alfred College)
Meredith Miller (M.Sc.). "A review of the Drosophila (Diptera: Drosophilidae) in Ontario Canada, including the invasive Spotted-Wing Drosophila". January 2013- May 2015. Committee member.
Mike Tomascik (M.Sc.). Arthropod detoxification mechanisms with special reference to arachnids. September 2012- September 2015. Committee member.
Kelly Grieg (MES). The impact of organic and conventionally grown forage corn on Bombus impatiens colonies in southern Ontario. Supervisor. Sept. 2013 – June 2015.
Tiffany Yau (M.Sc.). A revision of Sphaeroceridae, the small dung flies, genus Bromeloecia. January 2014 – present. Committee member.
Pamela Loughran (M.Sc.). Development of standardized methods for assessing risk of pesticide exposure to bumble bees. September 2014 – present. Co-Advisor with Dr. Chris Cutler (Dalhousie U). Transferred to MES program January 1, 2016.
Zach Telfer (M.Sc.). Management of carrot weevil on carrots in Ontario. September 2014 – present. Co-Advisor with Dr. Mary Ruth McDonald (Plant Ag).
Jason Lemay (M.Sc.). Management of carrot rust fly on carrots in Ontario. September 2014 – present. Co-Advisor with Dr. Mary Ruth McDonald (Plant Ag).
Pascal Tuarze (MES). Alkylated polycyclic aromatic hydrocarbons in fish and risk to human health: Implications for ecological and human health risk assessments in the Alberta oil sands. September 2014- February 2016. Co-Advisor with Dr. Loren Knopper (Adjunct SES).
Kaelyn Hunter (M.Sc.). Sustainable management of brown marmorated stink bug: chemical control and mitigation of overwintering aggregations. September 2015 – present Advisor.
Tara Celetti (M.Sc.). Semi-field testing of risk assessment methodologies for bumble bees associated with insecticide exposure in agroecosystems. September 2015- present. Co-Advisor with Dr. Chris Cutler –Dalhousie Univ.
Jason Sproule (M.Sc. - Dalhousie University). Evaluating the hazard of Pristine fungicide to bumble bees. September 2014 – present. Co-Advisor (Adjunct Prof at Dalhousie Univ.) with Dr. Chris Cutler (Dal Univ).
MacKenzie Plommer (M.Sc.). Controlling insect pests in high tunnels used to produce high-value organic vegetable and nutraceutical crops in Canadian climates. September 2015 – present. Co-Advisor with Dr. Mary Ruth McDonald (Plant Ag).
Rachel England (MES). Effects of low doses of imidacloprid on Bombus impatiens reproduction and development. September 2015 – present. Advisor.
Melanie Raby. (Ph.D.). Toxicity of neonicotinoids to aquatic invertebrates. January 2015 – present. Committee member.
Chase Jones-Baumgardt – Microcolony studies on bumble bees. January 2016 – April 2016.
John Ciancio – Developing diagnostic tools for detection of damage by Brown Marmorated Stink Bug in vegetable crops in Ontario. September 2015- December, 2016.
Angela Miller – Survey of wireworms in southern Ontario. May- September, 2014 and 2015.
Lucus Sunderland – Relative toxicity of insecticides to control BMSB. September 2014 – May 2015.
Kaelyn Hunter – Compatibility of insecticides used for brown marmorated stink bug control on associated parasitoids. September –December 2014.
Kaelyn Hunter – Compatibility of insecticides used for brown marmorated stink bug control on associated parasitoids. Jan-April 2015.
Alexander Stinson = carrot insect pests. Coop Student Sept-Dec. 2014
Lucas Sunderland – bumble bee risk assessment methods Coop Student Jan –April 2015
Zhuli Cui – Potential impact of Bagrada hilaris on Ontario agriculture. September –December 2014.
Sarah Pirani - Susceptibility of some Canadian Colorado potato beetle populations to imidacloprid and metaflumizone. April - October 2007.
Andrew McFarlane - Modification of the micro-colony toxicology bioassay for Bombus impatiens. September - December 2010.
Maryam Sultan - Biocontrol of insect pests of berry crops. January - December 2011.
Mehdi Mosallah - Recycling of plastic plant pots in greenhouse operations. May 2011.
Niko Canedo – September –December, 2012.
Medhat Nasr (PDF). 1990 - 1994. Co-supervisor.
Rosemarije Buitenhuis (PDF). Use of the generalist predatory mite, Amblysieus swirskii, for biological control in greenhouse ornamentals. April 2007 - March 2009. Co-Supervised with Dr. Les Shipp (Research Scientist AAFC).
Dr. Angela Gradish (PDF). Sustainable integrated pest management and agroecosystem impacts on beneficial insects. September 2014 – 2019. Advisor.
Dr. Andrew Frewin (PDF) Developing risk assessment methodology for leaf cutting bees. November 2015 – October 2017. Advisor.
Summer Student Technicians:
Tyler Black Summer Research Technician May-Aug 2016
Tyler Black Coop Student Sept. 2015- April 2016
Meredith Miller Summer Research Technician April- Aug 2016
DanielEngelking Summer Research Technician May-Aug 2016
Graham Ansell Summer Research Technician May-Aug 2016
Ellen Richard Summer Research Technician April-Aug 2016
Angela Miller Summer Research Technician May-Aug. 2015
Kaelyn Hunter Summer Research Technician May-Aug. 2015
Tara Celetti Summer Research Technician May-Aug. 2015
Lucas Sunderland Summer Research Technician May – Aug. 2015
Alexandra Stinson Coop Student Sept. – Dec. 2014
Lucas Sunderland Coop Student Jan – April 2014
Jessica Schuler Summer Research Technician May – Aug. 2014
Canada-Brazil Scholarship Student/Intern
Grace Pitman Summer Research Technician May – Aug. 2014
Angela Miller Summer Research Technician May – Aug. 2014
Kaileigh McCullum Summer Research Technician May – Aug. 2014
Kaelyn Hunter Summer Research Technician May – Aug. 2014
Zhuili Cui Visiting Intern Student (China) May-Aug. 2013
Emilie Delannoy Visiting International Student (France) June-Sept. 2013
Alexandra Kruger Summer Research Technician May – Aug. 2013
Canada-Brazil Scholarship Student/Intern
Melissa Eisen Summer Research Technician May – Aug. 2013
Cam Menzies Summer Research Technician May – Aug. 2013
Drew Mochrie Summer Research Technician May – Aug. 2013
Elaine Kennedy Summer Research Technician May – Aug. 2012
Hilary Lytle Summer Research Technician May – Aug. 2012
Devon Hardy Summer Research Technician June –Aug. 2012
Daniel Thurston Summer Research Technician May – Aug. 2012
Drew Mochrie Summer Research Technician May – Aug. 2012
Cam Menzies Summer Research Technician May – Aug. 2012
Maryam Sultan Summer Research Technician May- Aug. 2012