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Effect of Temperature on the Reproductive Potential of Indigenous and Exotic Species of Entomopathogenic Nematodes inside Galleria mellonella L. Larvae

Effect of Temperature on the Reproductive Potential of Indigenous and Exotic Species of Entomopathogenic Nematodes inside Galleria mellonella L. Larvae

Muhammad Raheel1,*, Nazir Javed2, Sajid Aleem Khan2, Hafiz Muhammad Aatif3 and Sohail Ahmed4


1University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan

2Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan

3College of Agriculture, BZU Bahadur Subcampus, Layyah, Pakistan

4Department of Entomology, University of Agriculture, Faisalabad, Pakistan


*         Corresponding author: raheel_15d@yahoo.com

 

ABSTRACT

The influence of different temperature ranges on the reproductive potential of native and exotic species of entomopathogenic nematodes (EPNs) was checked on Galleria mellonella larvae. The native species included Steinernema asiaticum and Heterorhabditis indica whereas exotic species were S. feltiae and H. bacteriophora. G. mellonella larvae were exposed to 300 IJs of each species. After inoculation at different temperatures, the reproductive potential of EPNs increased with increasing temperature and was found to be the best at 25oC. No EPNs species could reproduce at 5oC. S. feltiae started reproduction at 10oC, while all remaining species reproduced at 15oC or higher temperatures. Maximum numbers of IJs were recovered from H. bacteriophora. Time taken for first emergence of IJs from the host was shortest at 25oC i.e. 7-8 days in case of S. asiaticum and S. feltiae, while 11-13 days for H. bacteriophora and H. indica. Maximum emergence time was taken by S. feltiae at 10oC.

 

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Pakistan Journal of Zoology

December

Vol. 51, Iss. 6, Pages 1999-2399

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