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标题：Virulence of four Beauveria bassiana (Balsamo) (Asc., Hypocreales) isolates on rose sawfly, Arge rosae under laboratory condition
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作者：Roya Khosravi ; Roya Khosravi ; Jalal Jalali Sendi 等
期刊名称：Journal of King Saud University - Science
印刷版ISSN：1018-3647
出版年度：2015
卷号：27
期号：1
页码：49-53
DOI：10.1016/j.jksus.2014.04.003
语种：English
出版社：Elsevier
摘要：Abstract Rose sawfly Arge rosae (Hym; Argidae) is the most serious pest of the flowers of Rosaceae family. In order to evaluate the potential of entomopathogenic fungi for controlling this pest, fourth instar larvae were maintained under controlled conditions and exposed to entomopathogenic fungi, Beauveria bassiana. The bioassay was carried out by immersion method with concentrations 2×104, 2×105, 2×106, 2×107, and 2×108 conidia/ml of Tween-80 solution (0.03%) in distilled water. Each concentration was replicated four times with ten insects in each replicate. The results showed relatively high efficacy of these isolates on this insect pest. In case of IRAN 403C isolate, values of LC50 and LT50 were obtained as 5.54×105 conidia/ml and 3.92days at 2×108 conidia/ml, respectively. Results showed that IRAN 403C isolate caused the highest mortality in larvae in comparison with other isolates with a mean of 70% mortality using 107 conidia/ml.
关键词：Entomopathogen; Rose sawfly; Beauveria bassiana ; Mortality; Bioassay;