Introduction

Various anthropogenic and natural environment changes because of the global changes. Due to these climatic changes and weather changes, affects the population dynamics, distribution, abundance, intensity and feeding behaviour along with the status of insect pests. Meteorological sciences observed the direct and indirect effect of the intensity of change on the relationship, immune responses, fertility, rate of development and other physiological functions of prey and host in the climatic ecosystem. It was assumed by the various studies that the factors like anthropogenic, biotic and abiotic are responsible for the distribution of Asian Longhorn Beetle, which was conducted in 2008-2012. The multiplication, diapauses, emergence, flight and the dispersal rate of the insect is prevented by the abiotic factors especially, upper and lower thermal effects. Cool temperature plays a crucial role along with the high temperature threshold in the variation and inherent properties of insect species (Khaliq et al., 2014).

Insects are highly dependent on the thermal conditions of surrounding environment because it belongs to an ectothermic groups of animals. Hence climate change conditions are basic factors in the formation of range of insects alongside the food plants (Jaworski and Hilszczański, 2013). Insects living in hot temperature climate have light color as compare to that of facing cooled climate which possess dark color. The physiological, behavioral and morphological adaptations in the insects along with its population fluctuation is equally dependent on both the biotic and abiotic factors. In an agro ecosystem, terrestrial flora plays a vital role in the development of various stages, oviposition and hatching success of the terrestrial insects. Many insects are dependent on plants for their feeding like pollinator and other herbivorous, to which plant shows various responses. Carnivorous insects gets influenced by certain bivore induce plant volatile to attack on the plant eating insect species (Khaliq et al., 2014)

A range of natural and anthropogenic environmental changes is held by the term global changes. Global change is defined as the “Change in climate over time, either due to natural variability or as a result of human activity”, by Intergovernmental Panel on Climate Change. Over the last 50 years, most of the global warming observed which is due the human activities. It is predicted to be increase in global mean surface by 1.4 to 5.8ºC from 1990 to 2100. There is a chance of negative effects of global warming over the next hundred years, if temperature rise by about 2ºC, which initiate to cover most of the world regions.

The population dynamics and status of the insects of crop could profoundly affected by these weather and climate changes, which may be caused by the indirect effects on the host plants, competitors and natural enemies of the pests along with its direct effects on distribution and abundance of pest populations. The changing conditions exploitations may be caused by some pests which are although present but only in small areas, by spreading more widely and reaching up to damaging population densities (Karuppaiah and Sujayanad, 2012; Sangle et al., 2015).