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作 者:侯飞 邹梦婷 倪召红 乙天慈[1] 郭建军[1] 金道超[1] Hou Fei;Zou Mengting;Ni Zhaohong;Yi Tianci;Guo Jianjun;Jin Daochao(Scientific Observing and Experimental Station of Crop Pest in Guiyang,Ministry of Agriculture and Rural Affairs/Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region,Institute of Entomology,Guizhou University,Guiyang 550025,Guizhou Province,China)
机构地区:[1]贵州大学昆虫研究所,贵州省山地农业病虫害重点实验室,农业农村部贵阳作物有害生物科学观察实验站,贵阳550025
出 处:《植物保护学报》2023年第2期530-537,共8页Journal of Plant Protection
基 金:国家重点研发计划(2017YFD0201000);国家级大学生创新创业训练计划(202010657020,202010657062)。
摘 要:为明确草栖钝绥螨Amblyseius herbicolus对二斑叶螨Tetranychus urticae的控制潜能,在温度分别为19、22、25、28和31℃、相对湿度均为(85±5)%、光周期均为16 L∶8 D条件下测定草栖钝绥螨对二斑叶螨各螨态的捕食偏好性、捕食功能反应及自身干扰反应。结果表明,草栖钝绥螨对二斑叶螨幼螨和第1若螨具有嗜食性,对其捕食选择系数分别为2.22和1.27,均大于1.00,对二斑叶螨卵、第2若螨和雌成螨捕食选择系数分别为0.61、0.68和0.22,均小于1.00。在不同温度条件下,草栖钝绥螨对二斑叶螨各螨态的捕食功能反应均符合HollingⅡ型;在19~31℃范围内,草栖钝绥螨对二斑叶螨各螨态的瞬时攻击率、最大日捕食量和捕食能力均随着温度升高呈先升高后降低的趋势,在28℃时达到最大值;而草栖钝绥螨对二斑叶螨各螨态的处理时间随着温度升高呈先缩短后延迟的趋势,在28℃下处理时间最短。在相同温度下,草栖钝绥螨对二斑叶螨卵、幼螨和第1若螨的捕食作用较强。在有限的捕食空间和二斑叶螨密度固定的条件下,草栖钝绥螨单头捕食量和捕食作用率随其自身密度的增加而逐渐下降,说明草栖钝绥螨存在明显的种内干扰和竞争作用。表明草栖钝绥螨对二斑叶螨有较好的捕食作用,可作为有效防控二斑叶螨的本土捕食性天敌资源。To determine the control potential of the predatory mite Amblyseius herbicolus against twospotted spider mite Tetranychus urticae,the predatory preference,predatory functional response and auto-interference response of A.herbicolus to different stages of T.urticae were examined under the conditions of five temperatures,i.e.,19,22,25,28 and 31℃,respectively,(85±5)%relative humidity and 16 L∶8 D photoperiod.The results showed that the predator had a preference for larvae and protonymphs of the prey,and the selective coefficients were 2.22 and 1.27,greater than 1.00,while the selective coefficients for eggs,deutonymphs and female adults were 0.61,0.68 and 0.22,respectively,all less than 1.00.The functional responses of A.herbicolus fitted well with Holling type II model under different temperature conditions.At 19-31℃,the instant attack rate,the daily maximum consumption and predation capability of A.herbicolus on different stages of T.urticae increased at first and then decreased with increasing temperature,reaching the maximum at 28℃;the handling time of the predator on different stages of prey mites was shortened at first and then delayed,with a shortest time at 28℃.Under the same temperature,the predation of eggs,larvae and protonymphs by T.urticae was much stronger.Under the conditions of limited predation space and fixed prey densities,the consumption per predator and predation ratio decreased with increasing predator density,which indicated that the selfinterference and competition effect existed in A.herbicolus.This study suggested that A.herbicolus had a good predatory potential on T.urticae and could be used as a native predatory natural enemy resource for effective control of T.urticae.
关 键 词:草栖钝绥螨 二斑叶螨 捕食功能反应 取食偏好性 种内干扰
分 类 号:S476.2[农业科学—农业昆虫与害虫防治]
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