alexa Srinivas K Lanka | Louisiana State University
ISSN: 2375-4338

Rice Research: Open Access
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Srinivas K Lanka

Srinivas K Lanka Srinivas K Lanka
Postdoctoral Researcher
Department of Entomology
Louisiana State University
Baton Rouge
USA
Biography

Srinivas Lanka is currently a postdoctoral researcher in a collaborative research project funded by the National Science Foundation, entitled-“Scaling up epizootic dynamics - linking individual infection and spatial spread by using a Bayesian hierarchial approach”. This project deals with a tritrophic interaction involving soybeans, fall armyworm, Spodoptera frugiperda, and a baculovirus, Sf NPV. The aim of this project is to determine how differences in food quality for herbivores affect transmission of a virus at different scales- from individual to epizootic scales. To this end, Srinivas is investigating constitutive and inducible resistance in different soybean genotypes against fall armyworm by measuring insect growth rates and food consumption. He aims to determine different biochemical correlates of inducibility in soybeans by using enzyme activity assays. The candidate enzymes in his research include peroxidases, polyphenol oxidases and lipoxygenases and proteinases inhibitors. His larger goal is to integrate information from foliar consumption and chemical induction to predict the probability of Sf NPV infection in larvae. Srinivas graduated with Ph.D in Entomology in 2012 from Louisiana State University. For his dissertation, he developed an applied research program to investigate various aspects of the use of neonicotinoid and anthranilic diamide seed treatments in rice. These seed treatment insecticides are systemic and have been used for management of the rice water weevil, Lissorhoptrus oryzophilus, in the southern US. His research revealed the potential for integrating seed treatments with non-chemical methods for integrated management and demonstrated the compatibility of seed treatments with crawfish production. His research projects addressed aspects such as biological characterization of the effects of each insecticide on various life stages of L. oryzophilus, adult susceptibility to thiamethoxam, patterns of distribution of seed treatment insecticides in rice and sublethal impacts of these seed treatments on oviposition behavior. To characterize adult susceptibility (LD 50), data on foliar biomass consumption by adult weevils from plants that received seed treatments were used in conjunction with insecticide concentrations as measured by LC/MS/MS. Plant growth-related influence on systemic activity of thiamethoxam was also determined by ELISA. These experiments provided a basic understanding of how both insecticide classes differ in their activity against weevils and in their distribution pattern of active ingredients in rice plants. Srinivas has broad interests in research with a focus on integrated pest management. His interests are on non-target effects of agrochemicals on beneficial arthropods and indirect effects of agrochemical treatments on plants. Before Srinivas came to U.S for pursuing Ph.D, he served in research and extension organizations in India. He had gained experience in field biology of insects in different field crops.

 

Research Interest

Integrated pest management; non-target effects of agrochemicals on arthropods; indirect effects of systemic insecticides on plants; tritrophic interactions and induced resistance, Stress resistance

 

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Publications

Insecticidal Seed Treatments in Rice
Srinivas K Lanka and Michael J Stout
Editorial: J Rice Res 2015,3: e112
DOI: 10.4172/2375-4338.1000e112
 
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