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首页> 外文期刊>International Biodeterioration & Biodegradation >Laboratory and field evaluation of three odorant compounds for improving attraction of the lesser bandicoot rat, Bandicota bengalensis (Gray) to 0.0375% coumatetralyl bait.
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Laboratory and field evaluation of three odorant compounds for improving attraction of the lesser bandicoot rat, Bandicota bengalensis (Gray) to 0.0375% coumatetralyl bait.

机译：在实验室和现场评估了三种增味剂化合物，它们可改善小band猴（孟加拉）（灰色）对0.0375％香豆草毒饵的吸引力。

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摘要

For improving the acceptance of rodenticide bait containing 0.0375% coumatetralyl to control the lesser bandicoot rat, Bandicota bengalensis, a predominant pest in rice and wheat cropping in South Asia, three odorant compounds were tested in bi- and multi-choice laboratory feeding tests and under field conditions. The synthetic form of dimethyl sulphoxide (DMSO), carbon disulphide (CS2) and phenyl acetic acid (PAA), which are considered to be artificial semiochemicals involved in mediating socially induced food choices, were used to amend 0.0375% coumatetralyl baits at the rate of 1.5, 1.0 and 1.0%, respectively. The baits, WSO and RSO, were prepared as mixtures of respectively wheat and rice semolina (particle size 0.000216-0.001 mm3), sugar and groundnut oil in the ratio 93:5:2. DMSO and CS2 improved acceptance of WSO bait by approx. 39% and 65%, respectively, and of RSO bait by approx. 39% and 45% in bi-choice feeding tests. However, PAA-amended WSO bait was avoided by B. bengalensis. These results were confirmed by analysis of behavioural acts relating to attraction and feeding of baits. Plain RSO baits amended with the odorant compounds were preferred to unamended RSO and traditional wheat bait (cracked wheat/sugar/groundnut oil, 96:2:2), but amended 0.0375% coumatetralyl RSO baits were the least preferred in multi-choice feeding tests, so indicating that the rats discriminated against the poison, even in the most preferred bait base, i.e. the plain RSO. The acceptance of both poison baits, WSO and RSO, was not significantly enhanced in wheat fields but significantly enhanced in rice fields by DMSO. PAA significantly increased bait take of RSO poison bait by rodents in both crops, while CS2 non-significantly enhanced take of poison in both bait bases in rice crops, although only in WSO poison bait in a wheat field. In mature rice crops, RSO poison bait treated with DMSO or CS2 was consumed in 2-3 times greater quantities than the alternative wheat bait, thus clearly indicating the usefulness of these odorant chemicals in the control of field rodents..
机译：为了提高对含有0.0375％香豆醛基的灭鼠剂诱饵的控制率，以控制较小的班迪科孟加拉鼠（Bandicota bengalensis），这是南亚稻米和小麦作物中的主要害虫，我们在双选和多选实验室喂养试验中对三种增香剂进行了测试，现场条件。二甲基亚砜（DMSO），二硫化碳（CS2）和苯乙酸（PAA）的合成形式被认为是参与调解社会诱因食物选择的人工化学信息素，用于以0.075％的速率修正0.0375％的香豆醛诱饵。分别为1.5％，1.0％和1.0％。诱饵WSO和RSO分别是小麦和大米粗面粉（粒径0.000216-0.001 mm3），糖和花生油的比例为93：5：2的混合物。 DMSO和CS2将WSO诱饵的接受程度提高了约RSO诱饵分别为39％和65％。双向喂食测试中分别占39％和45％。但是，孟加拉芽孢杆菌避免了PAA改良的WSO诱饵。这些结果通过分析与诱饵和诱饵有关的行为得到证实。与未经修饰的RSO和传统的小麦饵料（裂解的小麦/糖/花生油，96：2：2）相比，用加味剂改良的普通RSO饵料更为可取，但在多选饲喂试验中，最不推荐使用经修正的0.0375％香豆基RSO饵料。 ，因此表明即使在最喜欢的诱饵库（即普通的RSO）中，大鼠也可以区分毒物。 DMSO在麦田中对WSO和RSO两种毒饵的接受率均未显着提高，但在稻田中，其显着提高了接受率。 PAA显着增加了两种作物中啮齿动物对RSO毒物诱饵的吸收，而CS2在水稻作物的两种诱饵基中对毒物的吸收均无明显增加，尽管仅在小麦田中WSO毒物诱饵中。在成熟的水稻作物中，用DMSO或CS2处理过的RSO毒饵的消耗量是其他小麦毒饵的2-3倍，因此清楚地表明了这些气味化学物质在控制田间啮齿动物中的有用性。

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