Archives of Phytopathology and Plant Protection (2013) 46, 2459-2468

Tahmineh Saffari, Hossein Madadi and Javad Karimi (2013)
Pathogenicity of three entomopathogenic nematodes against the onion thrips, Thrips tabaci Lind. (Thys.; Thripidae)
Archives of Phytopathology and Plant Protection 46 (20), 2459-2468
Abstract: Pathogenicity of a native isolate of Steinernema feltiae (H1) and two exotic strains, Heterorhabditis bacteriophora and Steinernema carpocapsae was assessed under laboratory conditions using different concentrations i.e. 4000, 6000, 8000 and 10,000 infective juveniles/ml against second instar larvae, prepupa and pupa of Thrips tabaci Lindeman. The mortality data were recorded 24 and 48 h post-inoculation. The highest mortality rate was recorded for prepupa (62%) than second instar (12.5%) by H. bacteriophora and S. carpocapsae, respectively, 24 h after treatment. No significant differences were found in mortality between prepupa and pupa with increasing the nematodes concentrations (from 4000 to 10,000 nematode/ml) but increasing nematode concentrations increased the mortality of second instar. At the end of the experiment (48 h.), S. feltiae H1 caused the highest mortality on second instar larvae (74%), whereas all other species caused 80-83% mortalities on pupa. This study suggests that native isolate of S. feltiae (H1) had high potential to infect soil-dwelling stages of T. tabaci.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Javad Karimi, Hossein Madadi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Thrips tabaci
Steinernema carpocapsae/Xenorhabdus nematophila (entomopathogen)	Thrips tabaci
Steinernema feltiae/Xenorhabdus bovienii (entomopathogen)	Thrips tabaci
Heterorhabditis bacteriophora/Photorhabdus (entomopathogen)	Thrips tabaci