student on campus

Kaushalya G. Amarasekare
Assistant Professor and IPM Coordinator
 
Department of Agricultural and Environmental Sciences
College of Agriculture
 
Contact information:
Office: 202 P Farrell Westbrook Complex
Phone: (615) 963-5001
Fax:    (615) 963-5436
Email: kamarase@tnstate.edu
website

Research Areas:
Integrated pest management (IPM)
Biological control
Pest and natural enemy monitoring
Effects of newer, reduced risk insecticide on natural enemies
Pesticide efficacy
Biology and life history of pests and natural enemies
Effects of temperature on development, reproduction and survival of pests and natural enemies
Exotic invasive pest insect management

Selected Publications:

Amarasekare, K. G. and P. W.  Shearer. 2017. Stability of Cacopsylla pyricola (Hemiptera: Psyllidae) populations in Pacific Northwest pear orchards managed with long-term mating disruption for Cydia pomonella (Lepidoptera: Tortricidae). Insects 8 (4), 105; doi:10.3390/insects8040105 (Special Issue).

Choi, M-Y., Tang, S. B., Ahn, S-J, Amarasekare, K. G., Shearer, P. and Lee, J. C. 2017. Effect of non-nutritive sugars to decrease the survivorship of spotted wing drosophila, Drosophila suzukii. J. of Insect Physiology. 99:86-94.

Amarasekare, K. G., P. W.  Shearer and N. J. Mills. 2016. Testing the selectivity of pesticide effects on natural enemies in laboratory bioassays.  Biological Control. 102: 7-16. (Special Issue).

Beers, E. H., Mills, N. J., Shearer, P. W.,   Horton, D.R., Milickzy, E., Amarasekare, K. G. and Gontijo, L.M. 2016. Nontarget effects of orchard pesticides on natural enemies: lessons from the field and laboratory.  Biological Control. 102: 44-52. (Special Issue).

Shearer, P. W.,   Amarasekare, K. G., Mills, N. J., Castagnoli S., Beers, E. H., Jones, V. P. and Mills, N. J.  2016. Large-plot field studies to assess impacts of newer insecticides on non-target arthropods in Western U.S. orchards. Biological Control. 102: 26-34. (Special Issue).

Mills, N. J., Beers, E. H., Shearer, P. W., Unruh, T., and Amarasekare, K. G. 2016. Comparative analysis of pesticide effects on natural enemies in western orchards: a synthesis of laboratory bioassay data. Biological Control. 102: 17-25. (Special Issue).

Jones, V., Horton, D.R., Mills, N. J., Unruh, T., Baker, C., Melton, T., Milickzy, E., Steffan, S., Shearer, P. W., and Amarasekare, K. G. 2016. Evaluating plant volatiles for monitoring natural enemies in apple, pear and walnut orchards. Biological Control. 102: 53-65. (Special Issue).

Jones, V., Horton, D.R., Mills, N. J., Unruh, T., Milickzy, E., Shearer, P. W., Amarasekare, K. G., Baker, C., and Melton, T. 2016. Using plant volatile traps to develop phenology models for natural enemies: An example using Chrysopa nigricornis (Burmeister) Neuroptera: Chrysopidae). Biological Control. 102: 77-84. (Special Issue).

Mills, N. J., Jones, V., Baker, C., Melton, T., Steffan, S., Unruh, T., Horton, D.R., Shearer, P. W., Amarasekare, K. G., and Milickzy, E.  2016. Using plant volatiles traps to estimate the diversity of natural enemy communities in orchard ecosystems. Biological Control. 102: 66-76. (Special Issue).

Jones, V., Mills, N. J., Brunner, J.F., Horton, D.R.,  Beers, E. H., Unruh, T., Shearer, P. W., Goldberger, J., Gallardo, K., Castagnoli, S., Lehrer, N., Steffan, S., Amarasekare, K. G., Chambers, U., and Gadino, A.N.  2016. From planning to execution to the future: an overview of a concerted effort to enhance biological control in apple, pear and walnut orchards in the western U.S. Biological Control. 102: 1-6. (Special Issue).

Amarasekare, K. G. and P. W. Shearer. 2013c. Life history comparison of two green lacewings species, Chrysoperla johnsoni and Chrysoperla carnea (Neuroptera: Chrysopidae). Environmental Entomology. 42:1079-1084.

Amarasekare, K. G. and P. W. Shearer. 2013b. Comparing Effects of insecticides on two green lacewings species, Chrysoperla johnsoni and Chrysoperla carnea (Neuroptera: Chrysopidae). Journal of Economic Entomology. 106: 1126-1133.

Amarasekare, K. G. and P. W. Shearer. 2013a. Laboratory bioassays to estimate the lethal and sublethal effects of various insecticides and fungicides on Deraeocoris brevis (Hemiptera: Miridae). Journal of Economic Entomology. 106: 776-785.

Amarasekare, K. G., C. M. Mannion and N. D. Epsky. 2012. Developmental time, longevity and lifetime fertility of three introduced parasitoids of the mealybug Paracoccus marginatus (Hemiptera: Pseudococcidae). Environmental Entomology 41: 1184-1189.

Amarasekare, K. G. and Mannion C. M. 2011. Life history of a new-to-science exotic soft scale insect Phalacrococcus howertoni (Hemiptera: Coccidae) found in Florida. Florida Entomologist. 94(3): 588-593.

Amarasekare, K. G., C. M. Mannion, and N. D. Epsky. 2010. Host instar susceptibility and selection and interspecific competition of three introduced parasitoids of the mealybug Paracoccus marginatus (Hemiptera: Pseudococcidae). Environmental Entomology. 39(5): 1506-1512.

Amarasekare, K. G., C. M. Mannion and N. D. Epsky. 2009. Efficiency and establishment of the three introduced parasitoids of the mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae). Biological Control. 51, 91-95.

Amarasekare, K. G., J.C. Chong, N. D. Epsky, and C. M. Mannion. 2008b. Effect of temperature on the life history of the mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae) Journal of Economic Entomology. 101(6):1798-1804.

Amarasekare, K. G., C. M. Mannion, L. S. Osborne and N. D. Epsky. 2008a. Life history of Paracoccus marginatus (Hemiptera: Pseudococcidae) on four host plant species under laboratory conditions. Environmental Entomology. 37(3): 630-635.

Amarasekare, K. G. and J. V. Edelson. 2004. Effect of temperature on efficacy of insecticides to differential grasshopper (Orthoptera: Acrididae). Journal of Economic Entomology. 97(5): 1595-1602.

Grants:
Shearer, P.W., K. G. Amarasekare. Conservation biological control of pear psylla in Pacific Northwest pears. Washington Tree Fruit Research Commission.  ($71,571).

Shearer, P.W., K. G. Amarasekare, V.P. Jones, S.A. Steffan. Improving biological control of insect pests of cherry. Washington Tree Fruit Research Commission.  ($79,485).

Honors and Awards:
Entomological Society of America - Student and Young Professional Participation Award 2011
Entomological Society of America - Student and Young Professional Participation Award 2010
Entomological Society of America - Student and Young Professional Participation Award 2009
L. Russell Norton Memorial Fellowship–Miami-Dade County Agri-Council, Inc. 2007
Entomological Society of America - Student and Young Professional Participation Award 2007
Gamma Sigma Delta National College Honor Scholarship Society 2007
Alpha Zeta National College Honor Scholarship Society 2004 
Phi Kappa Phi National College Honor Scholarship Society 2002
William H. Krome Memorial Fellowship–Miami-Dade County Agri-Council, Inc.   2004

Professional Affiliations:
Entomological Society of America
International Organization for Biological Control (IOBC) – NRS Pacific Branch
Entomological Society of America Southeastern Branch
Florida Entomological Society
Tennessee Entomological Society

Professional Experience:
Graduate faculty Tennessee State University Spring 2016 – Spring 2019

Education:
Ph.D. (Entomology) University of Florida, Gainesville, FL
M.S. (Entomology) Oklahoma State University, Stillwater, OK
B.S. (Honors) (Agriculture) University of Peradeniya, Peradeniya, Sri Lanka

Full resume of Dr. Amarasekare here.

Date joined staff: November 2015