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- Title
Characterisation of biological and biocontrol traits of entomopathogenic nematodes promising for control of striped flea beetle (Phyllotreta striolata).
- Authors
Xun YAN; Yinying LIN; Zhenmao HUANG; Richou HAN
- Abstract
The biological and biocontrol traits of two entomopathogenic nematode isolates, Steinernema pakistanense 94-1 (Sp94-1) and Heterorhabditis indica 212-2 (Hi212-2), were evaluated. The highest yield of infective juveniles (IJ) in monoxenic sponge culture system for Sp94-1 and Hi212-2 was 3.52 (± 0.45) ×105 and 7.08 (± 0.11) ×105 IJ g-1, respectively. The optimum storage temperature was 25°C for Sp94-1 and 14°C for Hi212-2. Sp94-1 showed greater tolerance to heat exposure and UV radiation, while S. carpocapsae All, a commercial strain, was more resistant to osmotic pressure, desiccation, cold treatment and hypoxia than the other tested isolates. Hi212-2 suppressed the Phyllotreta striolata larvae when applied at 1.5 × 109 IJ ha-1 or higher concentrations, while Sp94-1 suppressed the P. striolata larvae only when applied at 4.5 × 109 IJ ha-1. Our study indicates the possibility of commercialisation of the EPN isolates, and further confirms their efficacy against the P. striolata larvae in the field.
- Subjects
PHYLLOTRETA; INSECT nematodes; BIOLOGICAL pest control agents; COMMON cold treatments; OSMOTIC pressure
- Publication
Nematology, 2018, Vol 20, Issue 6, p503
- ISSN
1388-5545
- Publication type
Article
- DOI
10.1163/15685411-00003155