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三叶斑潜蝇和美洲斑潜蝇是广东地区发生和危害比较严重的两种蔬菜潜叶蝇,通过对两种斑潜蝇及其寄生蜂空间生态位的调查研究表明,发现两种斑潜蝇的生态位宽度受寄主影响各有不同,与其寄生蜂的生态位重叠值较小。底比斯釉姬小蜂Chysocharis pentheus(Walker)、冈崎灿姬小蜂Chysonotomyia okazakii(Kamijo)和丽灿姬小蜂Chysonotomyia formosa(Westwood)生态位宽度值相近且均高于其它寄生蜂,分布较其它三种寄生蜂广,三种寄生蜂对斑潜蝇的寄生跟随作用较强;甘蓝潜蝇茧蜂Opius dimidiatus(Ashmead)、黄潜蝇釉姬小蜂Chysocharis oscinidis Ashmead和异角亨姬小蜂Hemiptarenus varicornis(Girault)的时间生态位宽度值(B’i)均小于0.1,在大田中发生的跨度范围很窄,具有季节集中性。三叶斑潜蝇和美洲斑潜蝇的种间竞争,表现在对寄主资源的占有和掠夺上具有一定的竞争性,这也是田间三叶斑潜蝇种群数量一直高于美洲斑潜蝇的主要原因之一。
Three leafminers and the United States Liriomyza sativae is the occurrence and more serious damage in Guangdong vegetable leafminer two leaf miner and its parasitic wasps through the spatial niche survey showed that two kinds of spot potential The niche breadth of flies was influenced by the host, which was different from that of parasitoids. The niche breadth values of Chysocharis pentheus (Walker), Chysonotomyia okazakii (Kamijo) and Chysonotomyia formosa (Westwood) were similar and higher than those of other parasitoids The other three kinds of parasitoids were wide and the three kinds of parasitoids had a great effect on the parasitism of the leafminers. Opius dimidiatus (Ashmead), Chysocharis oscinidis Ashmead and Hornworms The temporal niche breadth values (B’i) of Hemiptarenus varicornis (Girault) were all less than 0.1, and the span spanning in the field was very narrow with seasonal concentration. The interspecific competition between leafminers and leafminers, Liriomyza sativae, is somewhat competitive with the possession and plunder of host resources, which is also the reason why the population of L. trivialis has been consistently higher than that of L. occidentalis one of the reasons.