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Infectivity of a Bulgarian and an American strain ofSteinernema carpocapsae against codling moth |
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| Authors: | F.E. Vega L.A. Lacey A.P. Reid F. Hérard D. Pilarska E. Danova R. Tomov H.K. Kaya |
| Affiliation: | (1) European Biological Control Laboratory, USDA,ARS, Campus International de Baillarguet, Montferrier-sur-Lez, France;;(2) Present address: Insect Biocontrol Laboratory, USDA, ARS, Bldg. 011A,BARC-West, Beltsville, MD, USA;(3) Yakima Agricultural Research Laboratory, USDA, ARS, 5230Konnowac Pass Road, Wapato, WA, USA;(4) CABI Bioscience, Bakeham Lane, Egham, Surrey, UK;(5) Bulgarian Academy of Sciences, Sofia, 1000, Bulgaria;(6) Department of Nematology, University ofCalifornia, Davis, CA, USA |
| Abstract: | A strain of Steinernemacarpocapsae obtained from overwintering codling mothscollected in Bulgaria was identified to species usingthe polymerase chain reaction. The infectivity ofthis strain towards codling moth prepupae was comparedto that of a U.S. strain at three temperatures (11, 15and 20 °C). Infectivity was low at 11 °C with 8%mortality recorded for both strains. Mortality was61% and 62% at 15 °C, and 82% and 81% at 20 °C forthe Bulgarian and U.S. strain, respectively. The meanpercent mortality at each individual temperature wassignificantly different from each other whenmortalities of the two strains were combined. Thus,the Bulgarian strain did not provide a low temperatureinfectivity advantage compared to the U.S. strain. |
| Keywords: | Biological control codling moth entomopathogenic nematodes Cydia pomonella Steinernema carpocapsae |
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