IBM abstract

Sustainable agriculture and natural resource management Poster presentations Interrelationship between pest and parasitoid insect population: a review *Suvendu Das, Santanu Ray Systems Ecology & Ecological Modelling Laboratory, Department of Zoology, Visva- Bharati, University, Santiniketan – 731235 *[email protected] A wide variety of insect populations, including both pest and beneficial insects, are present in agro-ecosystems. Beneficial insects include parasitoid insects, pollinators and predator insects and they provide a wide array of advantages that are favourable for crop growth; while the pest insects are degenerative towards crop yield. Excessive and unscientific application of chemicals to control these pest populations negatively impact the beneficial insects to the verge of extinction and thus adding further to crop yield loss. In crop fields, parasitoid insects have a special role in controlling the pest population. The parasitoid instars spend particular time as a parasite of pest insect instars. In a closed system, population dynamics of both pest and parasitoid are interdependent on these interactions. Phenotype-dependent competition between more than one herbivorous pests plays important roles in their own population dynamics. This review aims to get conclusion the crop yield loss and its relationship with pest insect’s population. Keywords: Beneficial insect, crop, yield loss, competition 148 th 5 India Biodiversity Meet – 2018 Agricultural and Ecological Research Unit, Indian Statistical Institute, Kolkata