Efficacy of Heterorhabditis indica Derived from three hosts Borgia Mary Nirmala*, Rajkumar A. Joseph1, Miranda M.T.P. PG Research Department of Zoology, Fatima Mata National College, Kollam, 691001 1Division of Crop Protection, CPCRI (ICAR), Kayamkulam, Alleppy, Kerala *Corresponding author Email: nirmagia@gmail.com
Online published on 23 July, 2019. Abstract The efficacy in terms of virulence and longevity of the entomopathogenic nematode, Heterorhabditis indica produced from three hosts-Galleria mellonella, Henosepilachna vigintioctopunctata and Bactrocera cucurbitae was evaluated in this study. Application of H. indica progenies to the fourth instar grubs of H. vigintioctopunctata showed that progenies from G. mellonella showed maximum efficacy with respect to virulence and longevity; it was followed by H. vigintioctopunctata and B. cucurbitae. Virulence in terms of pathogenicity and mortality and longevity (number of days of survival) were observed to be directly influenced by size of the hosts, and larger parents were able to produce more efficient H. indica offspring. Top Keywords Virulence, longevity, efficacy, Heterorhabditis indica, Gallleria mellonella, Henosepilachna vigintioctopunctata, Bactrocera cucurbitae. Top |