Eken C, Tozlu G, Dane E, Coruh S, Demirci E
Department of Plant Protection, Faculty of Agriculture, Atatürk University, 25240, Erzurum, Turkey.
Mycopathologia. 2006 Jul;162(1):69-71. doi: 10.1007/s11046-006-0035-8.
The small poplar longhorn beetle, Saperda populnea is an important pest of Lombardy poplars (Populus nigra L.) in Turkey. A survey for natural entomopathogenic fungi of S. populnea larvae was made in Erzurum, Turkey, during the period 2004-2005. Larvae (13.5%) infected with a strain of the fungus Beauveria bassiana were found. The pathogenicity of B. bassiana strain 46 was conducted with different concentrations of conidia (10(6), 10(7) and 10(8) conidia/ml) of this isolate on S. populnea larvae. The lowest concentration (10(6) conidia/ml) caused about 56% mortality within 6 days. One hundred percent mortality was achieved after median lethal time (LT(50)) of 4.6 and 4.4 days for 10(7) and 10(8) conidia/ml, respectively. There were no significant differences between median lethal times. This is the first record of natural infection of S. populnea larvae by B. bassiana.
小青杨天牛（Saperda populnea）是土耳其伦巴第杨（Populus nigra L.）的一种重要害虫。2004年至2005年期间，在土耳其埃尔祖鲁姆对小青杨天牛幼虫的自然昆虫病原真菌进行了调查。发现有13.5%的幼虫感染了白僵菌（Beauveria bassiana）菌株。用该分离株不同浓度的分生孢子（10⁶、10⁷和10⁸分生孢子/毫升）对小青杨天牛幼虫进行了白僵菌菌株46的致病性试验。最低浓度（10⁶分生孢子/毫升）在6天内导致约56%的死亡率。对于10⁷和10⁸分生孢子/毫升，分别在4.6天和4.4天的半数致死时间（LT₅₀）后实现了100%的死亡率。半数致死时间之间没有显著差异。这是白僵菌对小青杨天牛幼虫自然感染的首次记录。
