β-胡萝卜素及饲料形态对七星瓢虫成虫生物学的影响  

Effects of β-Carotene and Feed Froms on Biology of Adult Coccinella septempunctata

作　　者：林会 刘东阳[3] 王勇[3] 江连强[3] 郭仕平 刘虹伶[1] 刘超[1] 伍兴隆 蒲德强[1] LIN Hui;LIU Dongyang;WANG Yong;JIANG Lianqiang;GUO Shiping;LIU Hongling;LIU Chao;WU Xinglong;PU Deqiang(Institute of Plant Protection,Sichuan Academy of Agricultural Sciences,Chengdu,Sichuan 610066;Sichuan Agricultural University,Wenjiang,Sichuan 611130;Liangshanzhou Company,Sichuan Tobacco Company,Xichang,Sichuan 615000;Sichuan Branch of China National Tobacco Corporation,Chengdu,Sichuan 610041,China)

机构地区：[1]四川省农业科学院植物保护研究所,四川成都610066 [2]四川农业大学,四川温江611130 [3]四川省烟草公司凉山州公司,四川西昌615000 [4]中国烟草总公司四川省公司,四川成都610041

出　　处：《贵州农业科学》2022年第11期43-48,共6页Guizhou Agricultural Sciences

基　　金：四川省农业科学院前沿学科项目“茶蚜种群结构与遗传多样性维持机制”(2019QYXK032);四川省农业科学院条件平台建设项目“蔬菜害虫生物防治”;四川省现代农业产业技术体系茶叶创新团队“茶园病虫绿色防控技术岗位”(sccxtd-2020-10);四川省烟草公司科技项目“七星瓢虫工厂化开发与应用”(SCYC201805)。

摘　　要：【目的】探明β-胡萝卜素添加量及饲料制作方法对七星瓢虫成虫生物学特性的影响,为β-胡萝卜素饲喂剂量及饲料制作提供借鉴。【方法】采用室内培养试验设置不同β-胡萝卜素添加量(5 mg/kg、10 mg/kg、15 mg/kg、20 mg/kg和25 mg/kg)及不同饲料形态(干粉和糊状)饲喂七星瓢虫,通过对不同饲料饲喂后七星瓢虫成虫取食、交配、寿命及产卵等生物学特性的评价分析,明确较优β-胡萝卜素添加量及饲料制作方法。【结果】采用β-胡萝卜素添加量为15 mg/kg、20 mg/kg和25 mg/kg的糊状和干粉饲料饲养,七星瓢虫产卵量分别为1 349粒和1 773粒、1 272粒和2 434粒和985粒和2 347粒,显著高于其余浓度饲料处理;各处理七星瓢虫成虫取食频次、交配频次、体重、死亡率及卵的孵化率分别为0.166~0.383次/min、0.072~0.217次/min、0.057~0.064 g/对、18.32%~23.33%及72.90%~81.80%,处理间无显著差异;β-胡萝卜素添加量为20 mg/kg的干粉饲料饲养七星瓢虫的产卵量为2 434粒,显著高于糊状饲料(1 272粒)。【结论】β-胡萝卜素添加量为20 mg/kg时七星瓢虫的产卵效果最佳。【Objective】The effect of β-carotene adding amount and feed preparation methods on the biological characteristics of adult Coccinella septempunctata is explored adding amount,which provides reference for determining β-carotene feeding dose and making feed.【Method】Through indoor cultivation experiment,C.septempunctata are fed with different adding amount of β-carotene(5 mg/kg,10 mg/kg,15 mg/kg,20 mg/kg,25 mg/kg)and different feed forms(dry powder or paste).The feeding,mating,longevity,oviposition and other biological characteristics of C.septempunctata are evaluated and analyzed to determine the optimal adding amount of β-carotene and the method of feed preparation.【Results】The fecundity of C.septempunctata fed with 15 mg/kg,20 mg/kg and 25 mg/kg β-carotene dry powder or paste was 1 349 and 1 773,1 272 and 2 434,985 and 2 347,respectively,which were significantly higher than other treatments.The adult feeding frequency,mating frequency,body weight,mortality rate and hatching rate of egg were 0.166~0.383 times/min,0.072~0.217 times/min,0.057~0.064 g/pair,18.32%~23.33% and 72.90%~81.80%,respectively.There were no significant differences among the treatments.The fecundity of C.septempunctata fed with 20 mg/kg dry powder was 2 434,which was significantly higher than that fed with paste powder(1 272).【Conclusion】The fecundity was the highest when the β-carotene adding amount is 20 mg/kg.

关 键 词：七星瓢虫 Β-胡萝卜素 人工饲料 生物学特性 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]