7种寄主和非寄主植物气味对茶尺蠖成虫行为的调控效应  

Effect of odours from seven species of host and non-host plants on the adult behaviour of the tea geometrid,Ectropis obliqua (Prout)

作　　者：江丽容 刘守安[1] 韩宝瑜[1,2] 欧阳立明 

机构地区：[1]中国农业科学院茶叶研究所,杭州310008 [2]中国计量学院生命科学学院,杭州310018 [3]浙江省建德市天羽茶业有限公司,建德311600

出　　处：《生态学报》2010年第18期4993-5000,共8页Acta Ecologica Sinica

基　　金：浙江省重大招标项目(2008C02007);浙江省农业科技成果转化项目(2008D70015);中国计量学院引进人才科研启动基金课题

摘　　要：为探讨茶园生态系中植物气味对茶尺蠖成虫行为的影响,遂以茶园群落中7种常见植物新鲜嫩梢为味源,设1.5、5.0、7.5、10.0、15.0、20.0g和30.0g剂量,洁净空气为CK1,用Y型嗅觉仪对茶尺蠖成虫进行的剂量反应结果为:①剂量为1.5g时寄主薄荷诱得的成虫数与CK1的差异显著;随着剂量增加,其诱得成虫数呈抛物线式递减;剂量为30.0g时其诱得成虫数显著小于CK1。②随着剂量的加大,寄主迷迭香、茶叶和吸毒草诱得成虫数呈抛物线式递增,剂量分别为7.5、10.0g和15.0g、以及10.0g时,3种寄主分别与CK1引诱成虫数的差异显著;当剂量再加大,3种寄主皆表现驱避效应,当剂量为30.0g时迷迭香诱得成虫数显著小于CK1。③当剂量为1.5g时,寄主万寿菊呈微弱引诱效应,当剂量再增加时则呈微弱驱避效应且驱避效应增强,当剂量为30.0g时其诱得成虫数显著小于CK1。④当剂量为5.0g时,寄主碰碰香无引诱或驱避效应;剂量为7.5g时,碰碰香呈微弱引诱效应;当剂量再增加时则呈微弱驱避效应。⑤当剂量为5.0、7.5、10.0g,非寄主薰衣草未呈现引诱或驱避;当剂量再增加时则呈驱避效应;当剂量为30.0g时其诱得成虫数显著小于CK1。再以正己烷为溶剂,取新鲜薄荷、万寿菊、茶叶嫩梢榨汁,汁液浸泡橡皮头24h以汲取气味,制成诱芯,气味以当量计算,即1.5g薄荷/诱芯、0.75g薄荷/诱芯、1.5g万寿菊/诱芯、1.5g茶叶/诱芯;以正己烷浸泡橡皮头24h作为CK2。诱芯附于土黄色粘板组成诱捕器,连续7d诱捕第5代成虫,每日更换色板,均有较强诱捕效应;从1.5g薄荷/诱芯、CK2、1.5g万寿菊/诱芯、0.75g薄荷/诱芯至1.5g茶叶/诱芯,诱效显著增加;1.5g薄荷/诱芯的诱效显著弱于CK2。在第5代茶尺蠖幼虫期,取1/6hm2茶园各3个作为诱捕小区,同样大小的3块茶园作为CK3,查虫口基数。第5代发蛾盛期,在每诱捕小区均匀放置5种诱捕器各7只,连续诱捕7日,每日�In order to determine the effects of the plant odours in the tea plantation ecosystems on the adult behaviour of the tea geometrid Ectropis obliqua （Prout）,the fresh tender shoots of seven species of common plants in the tea plantation community were tested as odor sources at the dosages of 1.5,5.0,7.5,10.0,15.0,20.0 and 30.0 g,respectively,against the clear air as CK1 using a Y-shape olfactometer.The results showed as follows：① The number of the geometrid adults responding to peppermint Mentha haplocalyx was significantly more than that to CK1 at the dosage of 1.5 g （P 0.05）,the number descended in a non-monotonic parabolic curve fashion with dosage,and was even significantly less than that to CK1 at the dosage of 30.0 g （P0.05）.② The responses to rosemary Rosmarinus officinalis,tea Camellia sinensis and lemon balm Melissa officinalis increased in a non-monotonic ＂inverted U-shaped＂ dose-response curve pattern;and the numbers of adults responding to these three species of hosts were significantly more than those to CK1 （P0.05） at the dosage of 7.5 g,10.0/15.0 g,and 10.0 g,respectively.However,they exhibited repellent effect on the adults at higher dosages.The number of the geometrid adults responding to rosemary was significantly less than that to CK1 at the dosage of 30.0 g （P0.05）.③ Host marigold Tagetes erecta displayed a weak attraction at the lowest dosage （1.5 g）,and showed a weak repellency at higher dosages.The number of the adults oriented to marigold was significantly less than that to CK1 at the dosage of 30.0 g （P0.05）.④ Host patchouli Pelargonium odoratissimum showed no effects at the dosage of 5.0 g,but exhibited a weak attraction at the dosage of 7.5 g,and a weak repellent effect as the dosage further increased.⑤ Non-host lavender Lavandula officinalis was inactive at the dosages of 5.0,7.5 and 10.0 g,but exhibited a weak repellent effect at higher dosages.The number of the geometrid adults responded was significantly less than that to CK1 at the dosage

关 键 词：茶尺蠖成虫 寄主植物 非寄主植物 引诱 驱避 植物气味 

分 类 号：S435.711[农业科学—农业昆虫与害虫防治]