Stirling Graham R, Stirling A Marcelle, Walter David E
Biological Crop Protection Pty. Ltd., Moggill, Queensland, Australia, 4070.
University of the Sunshine Coast, Sippy Downs, Queensland, Australia, 4556.
J Nematol. 2017 Sep;49(3):327-333.
was extracted from a sugarcane field in Australia and cultured on bacterial-feeding nematodes. Studies with various nematodes in laboratory arenas showed that one mite and its progeny reduced nematode numbers by between 26 and 50 nematodes/day. A bacterivore ( sp.), a fungivore (), and two plant parasites (root-knot nematode, and root-lesion nematode, ) were all reduced at much the same rate despite the fact that the nematodes are quite different in size and motility and belong to different trophic groups. When sugarcane was grown in the greenhouse for 8 wk, stunt nematode (), a plant parasite that feeds ectoparasitically on roots, was almost eliminated from pots inoculated with the mite, and numbers of microbivores and root-lesion nematode were markedly reduced. Huge reductions in nematode populations were also observed when mites were added to microcosms containing small quantities of defaunated soil. These results show that multiplies rapidly when nematodes are available as a food source and has the capacity to play a role in regulating populations of both plant-parasitic and free-living nematodes. Future research should focus on understanding the crop and soil management practices required to enable this mite and other predatory species to thrive.
从澳大利亚的一个甘蔗田采集而来，并在以细菌为食的线虫上进行培养。在实验室环境中对各种线虫进行的研究表明，一只螨及其后代每天可使线虫数量减少26至50条。尽管这些线虫在大小、活动能力上有很大差异且属于不同的营养类群，但一种食细菌线虫（物种名）、一种食真菌线虫（物种名）以及两种植物寄生线虫（根结线虫和根腐线虫）数量的减少速率大致相同。当甘蔗在温室中生长8周时，在接种了螨的花盆中，外寄生在根部的植物寄生线虫——矮化线虫几乎被消灭，而且微生物取食线虫和根腐线虫的数量也显著减少。当将螨添加到含有少量除动物后的土壤的微观世界中时，线虫种群数量也大幅减少。这些结果表明，当有线虫作为食物来源时，该螨繁殖迅速，并且有能力在调节植物寄生线虫和自由生活线虫的种群数量方面发挥作用。未来的研究应侧重于了解使这种螨和其他捕食性物种得以繁盛所需的作物和土壤管理措施。
