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A degree‐day simulation model for the population dynamics of the rice bug, Leptocorisa acuta (Thunb.)
Author(s) -
Reji G.,
Chander S.
Publication year - 2008
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/j.1439-0418.2007.01178.x
Subject(s) - biology , pest analysis , population , integrated pest management , population model , variable (mathematics) , simulation modeling , ecology , mathematics , botany , demography , mathematical analysis , mathematical economics , sociology
The rice bug, Leptocorisa acuta (Thunb.) is a major pest of the rice crop in India. A computer simulation model of the bug's population dynamics was formulated using the information generated on the thermal requirements of development stages. It is a mechanistic model which follows the state variable–rate variable approach. The model works based on the accumulation of heat units over stage‐specific thresholds of development. Validation using light trap catches has shown that the model has satisfactory predictive value. Simulated population dynamics over the years were compared and the influence of global warming on bug population dynamics was predicted. The model can forecast the pest population in the field and help in timely adoption of management practices.