摘要
双尾新小绥螨Neoseiulusbicaudus是一种重要的捕食性天敌。为明确双尾新小绥螨对花蓟马Franklinilla intonsa的捕食控害作用以及寄主花粉对其取食花蓟马的影响。本研究通过室内测定不同螨态双尾新小绥螨对不同密度花蓟马若虫的捕食量;在棉花新鲜花粉影响下捕食螨对花蓟马1龄若虫捕食能力,进而在棉田花期时测定捕食螨对花蓟马的实际控制效果。结果表明,双尾新小绥螨各螨态对花蓟马若虫的捕食量随着猎物密度的增加而升高,对1龄若虫捕食量显著高于2龄若虫,其捕食量最高可达6.1头/日。加入花粉后,双尾新小绥螨成螨对花蓟马的捕食量随着花粉数量的增加而降低,足量的花粉处理使其捕食量显著低于不加花粉处理,其捕食功能反应类型也由Holling-Ⅱ型变为Holling-Ⅲ型。将捕食螨以1:1的益害比释放至棉田中对花蓟马的防治效果相对最好。综上,双尾新小绥螨对花蓟马1龄若虫有较好的捕食能力,可用于花蓟马的生物防治。
Neoseiulus bicaudus is an important predator in Xinjiang.This study aims to understand the predatory ability of N.bicaudus on Frankliniella intonsa and whether the predation capacity would change with addition of host plant pollen.The predation capacity of different stages of the predator on the pest was measured at different prey densities,and the predatory ability of adult predatory mites on the lst instar nymphs of F.intonsa was also measured with addition of fresh cotton pollen.Furthermore,the field control effect of the predator was determined during cotton flowering stage.The results showed that,the predator’s consumption increased with the increase of the prey density.Female adult predators preferred the 2nd instar nymphs over the lst instar nymphs,and the maximum predation rate reached 6.1 nymphs/day.However,when pollen was added,the predator’s consumption decreased with the increase in pollen amount,and was even significantly lower at enough pollen addition than when no pollen was added,and the predatory functional response changed from Holling-II to Holling-III.For controlling F.intonsa in cotton fields,the optimal release ratio of predator to prey was 1:1.In conclusion,N.bicaudus has a good predatory ability on F.intonsa 1st instar and can be used for biological control of F.intonsa.
作者
王嘉阳
蓝碧云
方晨
胡恒笑
杨瑞彤
母凯琴
苏杰
陆宴辉
张建萍
WANG Jiayang;LAN Biyun;FANG Chen;HU Hengxiao;YANG Ruitong;MU Kaiqin;SU Jie;LU Yanhui;ZHANG Jianping(College of Agriculture,Shihezi University/Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Resources Utilization,Xinjiang Uygur Autonomous Region,Shihezi 832003,China;Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China)
出处
《中国生物防治学报》
CSCD
北大核心
2023年第2期271-279,共9页
Chinese Journal of Biological Control
基金
国家自然科学基金(32060635)
国家重点研发计划(2017YFD0201900)
石河子大学青年创新培育人才计划(CXPY202002)
石河子大学自主资助支持校级科研项目(ZZZC202113)
国家大学生创新创业训练计划(202110759002)。
关键词
双尾新小绥螨
花蓟马
花粉
捕食评价
Neoseiulus bicaudus
Franklinilla intonsa
pollen
predation evaluation
