不同雌雄成虫密度及性比对红彩瑞猎蝽繁殖力和寿命的影响  

The effects of different densities and sex ratios of male and female adults on the reproductive capacity and life span of Rhynocoris fuscipes

作　　者：游梓翊 夏长剑 蒲小明[3] 孙郑 邓海滨 YOU Zi-yi;XIA Chang-jian;PU Xiao-ming;SUN Zheng;DENG Hai-bin(Tobacco Research Institute of Guangdong Province,Shaoguan 512029,Guangdong,China;Haikou Cigar Research Institute,Hainan Provincial Branch of China National Tobacco Corporation(CNTC),Haikou 571100,China;Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China)

机构地区：[1]广东省烟草科学研究所,广东韶关512029 [2]中国烟草总公司海南省公司海口雪茄研究所,海口571100 [3]广东省农业科学院植物保护研究所,广州510640

出　　处：《湖北农业科学》2024年第6期75-80,共6页Hubei Agricultural Sciences

基　　金：中国烟草总公司科技重大专项[110202101028(LS-03)];中国烟草总公司广东省公司科技项目(2019440000200031),海南省重点研发计划项目(ZDYF2021XDNY141)。

摘　　要：在室内条件[温度(28±1)℃,相对湿度70%±7%,光照周期16 h(L)∶8 h(D)]下,测定不同雌雄成虫密度(雌∶雄=1∶1、2∶2、3∶3和4∶4)和不同性比(头/盒)(雌∶雄=1∶0、1∶2、1∶3、1∶4、2∶1、3∶1、3∶2和4∶1)对捕食性天敌红彩瑞猎蝽(Rhynocoris fuscipes Fabricius)产卵前期、产卵期、产卵量、孵化率、寿命和子代雌雄性比的影响。结果表明,红彩瑞猎蝽成虫繁殖存在孤雌生殖现象,可产下有效卵。不同雌雄成虫密度和雌雄性比对红彩瑞猎蝽产卵前期和卵孵化率的影响不明显,对产卵期、产卵量、子代雌雄性比和雌雄成虫寿命有显著影响,总产卵量随着配比中雌成虫密度的增加而增加,但是每雌产卵量和孵出若虫数量逐渐减少;雌成虫、雄成虫平均寿命均随着雌雄成虫密度的增加而减小。其中雌雄性比为2∶1的处理平均产卵期最长(39.5 d),平均每雌产卵量最高(136.40粒),每雌孵出若虫数最多(130.30头)。在交配过程中,红彩瑞猎蝽成虫密度过大会出现种内互残现象,基于研究结果中各项繁殖力和寿命参数结果,雌雄性比2∶1是人工饲养红彩瑞猎蝽成虫繁殖的较佳密度和性比。Different densities(individuals/box)(female∶male=1∶1,2∶2,3∶3 and 4∶4)and sex ratios(individuals/box)(female∶male=1∶0,1∶2,1∶3,1∶4,2∶1,3∶1,3∶2 and 4∶1)on the pre spawning period,spawning period,spawning amount,hatchability,life span and female to male sex ratio of the offspring were measured,under indoor conditions[temperature(28±1)℃,relative humidity(70% ± 7%),light cycle 16 h(L)∶8 h(D)].The results showed that parthenogenesis existed in the reproduction of the adult Rhynocoris fuscipes,which could lay hatchable eggs.The different densities of male and female adults and the sex ratios of female to male showed no significant effects on the pre-spawning period and egg hatching rate,but significant impacts on spawning period,spawning amount,female-to-male sex ratio of offspring and longevity of female and male adults of Rhynocoris fuscipes.The total number of eggs laid increased with the increase of female adult density,while the number of eggs laid and nymphs hatched per female gradually decreased;the average life span of male and female adults decreased with the increase of male and female adult density.The treatment with female to male sex ratio of 2∶1 had the longest average spawning period(39.5 d),and the average number of eggs laid per female was the highest(136.40),and the number of nymphs hatched per female was the highest(130.30).In the process of mating,high density gave rise to interspecific cannibalistic behavior among the adults of Rhynocoris fuscipes.Based on the results of various fertility and longevity parameters in the research,the female-to-male sex ratio of 2∶1 was the better density and sex ratio for the adult reproduction in the artificial rearing of Rhynocoris fuscipes.

关 键 词：红彩瑞猎蝽(Rhynocoris fuscipes Fabricius) 性比 雌雄成虫密度 繁殖能力 寿命 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]