ORGANOTIN RESISTANCE IN TETRANYCHUS-URTICAE (ACARI, TETRANYCHIDAE) IN AUSTRALIA
ORGANOTIN RESISTANCE IN TETRANYCHUS-URTICAE (ACARI, TETRANYCHIDAE) IN AUSTRALIA
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DOI：
10.1093/jee/79.6.1477
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发表时间：
1986-12-01
影响因子：
2.2
通讯作者：
JAMES, DG
中科院分区：
文献类型：
--
作者：
EDGE, VE;JAMES, DG
1981年，在苹果园和梨园的二斑叶螨的两个品系的室内试验中证实了三环锡抗性。1982 ~ 1985年又对21个果园菌株进行了测定。三环锡抗性主要局限于维多利亚的古尔本山谷（澳大利亚主要的梨种植区）和新南威尔士州南部的Murrumbidgee灌溉区，但在这些地区很普遍。三环锡的三种制剂用于实验室生物测定。除了对更高抗性品系的雌性动物外，一种抗真菌粉末制剂得到了令人满意的结果。可降解浓缩物制剂未出现该问题;因此，我们得出结论，这些菌株的耐药性水平应基于后者获得的数据。三环锡耐药水平不超过15倍，在女性的领域人口。用三环锡对其中一种耐药率较高的菌株（ShJ）进行实验室选择，仅略微提高了耐药性水平。抗性在ShJ没有增加，在现场，虽然16三环锡喷雾应用在3年。在实验室中，在没有杀螨剂的情况下，耐药性缓慢地恢复到敏感性（例如，在CA之后。在LC_（50）水平上，对三环锡的抗性由9.1倍下降到1.9倍，有34.5%的群体在有效浓度下存活。三环锡抗性水平的幼虫大大低于女性。三环锡抗性赋予三唑锡和苯丁锡氧化物交叉抗性。
Cyhexatin resistance was confirmed in laboratory tests on two strains of Tetranychus urticae Koch from apple and pear orchards in 1981. Another 21 strains from orchards were tested from 1982 to 1985. Cyhexatin resistance was confined mainly to the Goulburn Valley of Victoria (the main pear-growing area in Australia) and the Murrumbidgee Irrigation Area in southern New South Wales, but was widespread in these areas. Three formulations of cyhexatin were used in the laboratory bioassays. A wettable powder formulation gave satisfactory results except with females of more highly resistant strains. The problem was not experienced with an emulsifiable concentrate formulation; therefore, we concluded that levels of resistance in these strains should be based on data obtained with the latter. Levels of cyhexatin resistance did not exceed 15-fold in females of field populations. Laboratory selection with cyhexatin on one of the more resistant strains (ShJ) only marginally increased the level of resistance. Resistance in ShJ did not increase in the field, although 16 cyhexatin sprays were applied in 3 years. In the laboratory, resistance reverted slowly toward susceptibility without miticides (e.g., after ca. 160 generations, resistance to cyhexatin in ShJ fell from 9.1- to 1.9-fold at LC50) and 34.5% of the population still survived in a discriminating concentration. Levels of cyhexatin resistance in larvae were considerably lower than in females. Cyhexatin resistance conferred cross resistance to azocyclotin and fenbutatin oxide.