Choo H Y, Kaya H K
J Nematol. 1990 Oct;22(4):513-7.
Adults of the brown planthopper (BPH) and the whitebacked planthopper (WBPH) that migrated into Korea from China were not parasitized by the mermithid, Agamermis unka. BPH and WBPH collected from Korean rice fields were parasitized. Parasitism of BPH in the lst-3rd, 4th, and 5th instars, and adults was 31.5%, 61.5%, 66.4%, and 45.5%, respectively, whereas parasitism of the same stages of WBPH was 50%, 50%, 100% and 90.7%, respectively. Parasitism of BPH by A. unka significantly reduced the number of eggs. Only 4.2% of the parasitized females contained eggs, whereas 85.6% of unparasitized females had eggs. Tilling of rice fields significantly increased mermithid parasitism of BPH. Mermithids parasitized 39.3% of caged adults in the untilled field and 77.8% in the tilled field.
从中国迁入韩国的褐飞虱和白背飞虱成虫未被索线虫Agamermis unka寄生。从韩国稻田采集的褐飞虱和白背飞虱被寄生。褐飞虱一至三龄、四龄、五龄若虫及成虫的被寄生率分别为31.5%、61.5%、66.4%和45.5%，而白背飞虱相同虫态的被寄生率分别为50%、50%、100%和90.7%。Agamermis unka对褐飞虱的寄生显著减少了其产卵量。仅4.2%的被寄生雌虫含有卵，而未被寄生的雌虫中有85.6%有卵。稻田翻耕显著提高了索线虫对褐飞虱的寄生率。在未翻耕的田块中，索线虫对笼养成虫的寄生率为39.3%，在翻耕的田块中为77.8%。
