橘小实蝇几种寄生蜂种间竞争的研究

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'橘小实蝇几种寄生蜂种间竞争的研究'
福建农林大学 硕士学位论文橘小实蝇几种寄生蜂种间竞争的研究姓名:陈佳中请学位级别:硕士_专业:农业昆虫与害虫防治_指导教师:陈家骅20100401摘要橘小实蝇是一种世界性检疫害虫。在实验室条件下,对阿里山潜蝇茧蜂、切割潜蝇茧蜂、 布氏潜蝇茧蜂及长尾潜蝇茧蜂等4种重要的橘小实蝇寄生蜂的种间竞争关系进行了研究,为 寄生蜂的m间应用提供理论依据。切割潜蝇茧蜂不能识别被阿里山潜蝇茧蜂寄牛过的寄主幼虫,对阿里山潜蝇茧蜂寄牛过 和未寄生过的寄主幼虫的寄生率分别为75.33%和83.33%。寄主供阿里山潜蝇茧蜂寄生后再 供切割潜蝇茧蜂寄生,造成寄主幼虫期及蛹期的人量死亡,蛹期死亡率高达50.84%。两种 蜂个体在寄主体内发育过程中,阿里山潜蝇茧蜂占有优势。存活的寄主羽化出的寄生蜂中阿 里山潜蝇茧蜂占多数。寄主供两种蜂寄生后的寄牛?蜂羽化率耍高于供单独一种蜂寄:蟮挠 化率。长尾潜蝇茧蜂不能识別被阿里山潜蝇茧蜂寄生过的寄主幼虫,对阿里山潜蝇茧蜂寄牛过 和未寄生过的寄主幼虫的寄生率分别为58.67%^ 70.00%。寄主供阿里山潜姚茧蜂寄生片再 供长尾潜蝇茧蜂寄生,造成寄主幼虫期及蛹期的人量死亡。两种蜂个体在寄主体内的竞争过 程中,阿里山潜蝇茧蜂占有优势。寄主供两种蜂寄:蟮募呐7溆鸹室哂诠┑ザ酪?种蜂 寄:蟮挠鸹。布氏潜蝇茧蜂能够识別被阿里山潜蝇茧蜂寄生过的寄主幼虫,对阿里山潜蝇茧蜂寄牛过 和未寄生过的寄主幼虫的寄生率分别为14.67%^ 72.67%。切割潜蝇茧蜂和长尾潜蝇茧蜂能同时产卵于同一寄主。在两种蜂同时寄生的情况下,当 寄主为3 H龄橘小实蝇幼虫时,总寄生率最高为88.40%,当寄主龄期为4 H龄幼虫时,总 的羽化率授高为82.00%。长尾潜蝇茧蜂对于寄主是否被切割潜蝇茧蜂寄牛具有一定的识别 能力,而切割潜蝇茧蜂不能识別被长尾潜蝇茧蜂寄生过的寄主。寄生蜂个体在寄主体内的发 冇过程屮,先寄生的一种占有优势。寄主幼虫供切割潜腕茧蜂寄生后再供t尾潜蝇茧蜂寄也 切割潜蝇茧蜂的羽化率比长尾潜蝇茧蜂要髙,总的羽化率比两种蜂单独寄生时的羽化率都要 高。寄主幼虫供长尾潜蝇茧蜂寄生后再供切割潜蝇茧蜂寄生,长尾潜蝇茧蜂的羽化率耍高于 切割潜蝇茧蜂,总的羽化率比两种蜂单独寄牛时的羽化率都要低。切割潜蝇茧蜂寄牛48h 后再供长尾潜蝇茧蜂寄生,羽化出来的均为切割潜蝇茧蜂。关键词: 橘小实蝇;阿里山潜蝇茧蜂;切割潜腕茧蜂;布氏潜蝇茧蜂;长尾潜蝇茧蜂;种间竟争AbstrcatBactrocera dorsalis (Hcndcl) is one of the most important quarantine pests in the world. The interspecific interaction of the egg parasitoid Fopius arisanus (Sonan) and the larval parasitoids Psyttalia incise (Silvestri), Fopius vandenboschi (Fullaway) and Diachasmimorpha longicaudaia (Shmead) were studied under laboratoiy condition. In order to offer valuable consult for releasing in controlling B? dorsalis.Interspecific competition between F. arisanus and P. incise, the P. incise can not discriminate the hosts which had previously been parasitized at egg stage by F. arisanus. Most of the host died which parasitized by F. arisanus at egg stage first and parasitized by P. incise second, and the emerged adults from the host pupal were mostly F. arisanus. Total percentage emergence of parasitoids were both higher in hosts previously exposed to F. arisanus then exposed to P. incise than in those exposed to only one species?Interspecific competition between F. arisanus and D. lon^icaudata. the D. lon^icaudata can not discriminate the hosts which had previously been parasitized at egg stage by F. arisanus. Most of the host died which parasitized by F. arisanus at egg stage first and parasitized by D? longicaudata second, and the emerged adults from the host pupal were mostly F. arisanus. Total percentage emergence of parasitoids were both higher in hosts previously exposed to F. arisanus then exposed to D. longicaudata than in those exposed to only one species?Interspecific competition between F. arisanus and F. vandenboschi, the F. vandenboschi can not discriminate the hosts which had previously been parasitized at egg stage by F. arisanus.Interspecific competition between P. incise and D. longicaudata, when B. dorsalis larvae were exposed to both parasitoids concurrently, the total parasite ratio to 3-day-old hosts was 88.40%, and the total percentage emergence of parasitoids from 4-day-o
关 键 词:
橘小实蝇几种 寄生蜂 竞争 研究
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