| 草地螟优势寄生性天敌——伞裙追寄蝇生物学特性研究 |
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| 引用本文： | 相红燕,刘爱萍,高书晶,徐林波,刘长仲.草地螟优势寄生性天敌——伞裙追寄蝇生物学特性研究[J].草业学报,2013,22(3):92. |
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| 作者姓名： | 相红燕 刘爱萍 高书晶 徐林波 刘长仲 |
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| 作者单位： | 1.甘肃农业大学草业学院,甘肃 兰州 730070;2.中国农业科学院草原研究所,内蒙古 呼和浩特 010010 |
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| 基金项目： | 公益性行业(农业)科研专项经费项目，农业部"948"项目 |
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| 摘 要： | 伞裙追寄蝇,双翅目寄蝇科,是草地螟等鳞翅目昆虫的重要寄生性天敌。在实验室条件下,利用草地螟作寄主,对其生物学特性做了研究。成虫的羽化主要在白天,集中在8:00-10:00,14:00-16:00,雄蝇比雌蝇先羽化,羽化性比为1.26∶1(♀/♂),明显偏雌性;成虫的平均产卵量为159.8粒,产卵平均历期为16.6 d,在产卵后的第4天出现第一个产卵高峰;成虫寿命在恒温(23±1)℃时最长,且含糖物质的补充能显著延长成虫的寿命,特别是在20%的蜂蜜水饲喂下最长可达44 d。另外,对寄生后的草地螟虫茧的储存结果表明,随储存时间的延长,伞裙追寄蝇的羽化率显著降低,但储存到110 d后,其羽化率降低不显著。
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| 关 键 词： | 伞群追寄蝇 草地螟 生物学 寿命 羽化率 |
A biological study on Exorista civilis, a tachinid parasitoid of Loxostege sticticalis |
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| XIANG Hong-yan
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LIU Ai-ping
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GAO Shu-jing
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XU Lin-bo
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LIU Chang-zhong.A biological study on Exorista civilis, a tachinid parasitoid of Loxostege sticticalis[J].Acta Prataculturae Sinica,2013,22(3):92. |
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| Authors: | XIANG Hong-yan LIU Ai-ping GAO Shu-jing XU Lin-bo LIU Chang-zhong |
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| Institution: | A biological study on Exorista civilis, a tachinid parasitoid of Loxostege sticticalisXIANG Hong-yan;, LIU Ai-ping;2., GAO Shu-jing;2., XU Lin-bo;2., LIU Chang-zhong;1.(1.College of Grassland Science, Gansu Agricultural University, Lanzhou 730070, China; 2.Grassland Research Institute of Chinese Academy of Agricultural Sciences, Hohhot 010010, China) |
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| Abstract: | The tachinid fly Exorista civilis (Diptera: Tachinidae) is an important parasitoid of the beet webworm, Loxostege sticticalis (Lepidoptera: Pyralidae) and other lepidopterous pests. The adult biology of the parasitoid was observed in the laboratory. The adults emerged mainly in daytime at 08:00-10:00 and 14:00-16:00, and males usually emerged earlier than females. The sex ratio of E. civilis was 1.26∶1 (♀/♂). The average number of eggs laid by one female was 159.8, and the ovipositional period lasted 16.6 days on average, with a peak on the fourth day of egg-laying. The greatest longevity of adults was in an illuminated incubator with a constant temperature of (23±1)℃. Abundant sugary media significantly prolonged adult longevity, especially when 20% honey solution was provided - they could then survive for 44 days. The emergence ratio significantly decreased with an increase in storage time of the parasitoid L. sticticalis, but there was no further significant decrease after 110 d. |
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| Keywords: | Exorista civilis Loxostege sticticalis biology longevity emergency ratio |
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