摘要
【目的】明确不同宿主植物对益蝽生长发育及繁殖的影响,为益蝽的室内高效规模扩繁及田间定殖提供科学依据。【方法】在室内条件下,设仅提供黄粉虫蛹为食物的对照组及除提供黄粉虫蛹外分别添加玉米苗、小麦苗、菜豆苗和豌豆苗为宿主植物的处理组,观察记录不同处理下益蝽若虫的发育和存活情况;采用称量法测定益蝽若虫和雌雄成虫的重量,比较不同宿主植物上益蝽各虫态的体重;采用同日龄益蝽雌雄成虫单对饲养观测法统计各处理益蝽的产卵前期、产卵量等繁殖情况;选择卵粒数30粒以上的卵块,在塑料杯中孵化观察,统计各处理卵粒的孵化率及50%卵粒孵化时间。【结果】不同宿主植物对益蝽雌雄成虫的寿命、雌虫产卵次数、产卵总量、卵孵化率及卵孵化历期无显著影响(P>0.05),但均能提高或显著(P<0.05)提高益蝽若虫的存活率(1龄若虫除外)、增加体重(2龄若虫除外)、缩短发育历期和产卵前期,其中益蝽若虫在菜豆苗和小麦苗上的存活率较高,分别为86.67%和83.33%;发育历期明显短于玉米苗和豌豆苗组,分别为27.52和27.03 d。益蝽成虫在菜豆苗和小麦苗上的产卵前期较短,分别为16.54和16.31 d;单次产卵量较大,分别为38.36和36.30粒,且在开始产卵的1~20 d产卵量占总产卵量的80.87%和78.22%。【结论】菜豆苗和小麦苗能有效提高益蝽的生长发育和繁殖能力,可作为益蝽规模化人工繁育的宿主植物。此外,可在益蝽释放田内搭配种植菜豆或小麦,以利于益蝽定殖。
【Objective】The purpose of the study was to identify the effects of different host plants on the growth,development and reproduction of Picromerus lewisi,and to provide a scientific basis for efficient large-scale indoor bree-ding and field colonization of P.lewisi.【Method】Under the indoor condition,the control group was provided with Tene-brio molitor pupa as food only,and the treatment group was provided with seedlings of Zea mays,Triticum aestivum,Phaseolus vulgaris,Pisum sativum as host plants in addition to T.molitor pupa,respectively,and the development and survival of P.lewisi nymphs were observed and recorded.The weight of P.lewisi was measured and compared between the growth stages(nymphs,male and female adults)on different host plants.The same day-age P.lewisi adults were fed and observed in a single pair,and the reproduction of P.lewisi was counted,including the preoviposition period and the num-ber of eggs laid.The egg masses(over 30 eggs)were selected and incubated in plastic cups for observation,and the hatch-ing rate of eggs and the time taken for 50%oviposition were counted.【Result】There were no significant differences of dif-ferent host plants on the longevity,frequency of egg laying by females,total number of eggs laid,hatching rate of egg masses and incubation period of P.lewisi adult(P>0.05),but the addition of plants improved or significantly(P<0.05)improved the survival rate of nymphs(except 1stnymphs),increased the weight(except 2ndnymphs),shortened the develo-pmental and preoviposition period.P.lewisi nymph survival rates were higher in P.vulgaris and T.aestivum,86.67%and 83.33%,respectively,and the developmental periods were greatly shorter than that of Z.mays and P.sativum,27.52 d and 27.03 d respectively.P.lewisi adults had relaticely shorter preoviposition periods in P.vulgaris and T.aestivum,16.54 d and 16.31 drespectively;the single egg laying amounts were larger,38.36 eggs and 36.30 eggs respectively,and a larger proportion of eggs were laid between 1-20 d after the start
作者
孙淦琳
杨韵
何艳艳
付玉飞
郭朴原
陈斌
杜广祖
SUN Gan-lin;YANG Yun;HE Yan-yan;FU Yu-fei;GUO Pu-yuan;CHEN Bin;DU Guang-zu(College of Plant Protection,Yunnan Agricultural University/State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan,Kunming,Yunnan 650201,China;Institute of Resource Plants,Yunnan University,Kunming,Yunnan 650500,China)
出处
《南方农业学报》
CAS
CSCD
北大核心
2023年第3期919-927,共9页
Journal of Southern Agriculture
基金
国家重点研发计划项目(2021YFD1400705)。
关键词
益蝽
天敌昆虫
宿主植物
生长发育
繁殖力
Picromerus lewisi
natural enemy insect
host plant
growth and development
fecundity
