Hoctor Terri L, Gibb Timothy J, Bigelow Cale A, Richmond Douglas S
Department of Entomology, Purdue University, West Lafayette, IN 47907, USA.
Department of Agronomy, Purdue University, West Lafayette, IN 47907, USA.
Insects. 2012 Dec 20;4(1):1-8. doi: 10.3390/insects4010001.
This laboratory study examined viability and infectivity of the entomopathogenic nematode (EPN) Heterorhabditis bacteriophora Poinar in solutions containing four different turfgrass soil surfactants: Revolution (Aquatrols Corp., Paulsboro, NJ), Aqueduct (Aquatrols Corp., Paulsboro, NJ), Cascade Plus (Precision Laboratories Inc., Waukegan, IL) and OARS (Aqua-Aid Inc., Rocky Mount, NC). Infective juvenile H. bacteriophora were added to solutions containing each of the four surfactants, and nematode viability and infectivity were monitored over time. In one of two trials, nematode survival in solutions containing the surfactants Aqueduct and Cascade Plus was consistently higher compared to the water control and solutions containing Revolution or OARS. Surfactants had no significant influence on nematode infectivity in either trial. Findings indicate that most of the common turfgrass soil surfactants examined should be compatible with EPNs and that some may potentially enhance nematode survival. Results also imply that tank-mixing of EPNs with most turfgrass soil surfactants should not pose a significant risk to the nematodes. The influence of soil surfactants on EPN performance remains to be examined in the field.
这项实验室研究检测了昆虫病原线虫（EPN）嗜菌异小杆线虫（Heterorhabditis bacteriophora Poinar）在含有四种不同草坪土壤表面活性剂的溶液中的活力和感染力，这四种表面活性剂分别是：Revolution（Aquatrols公司，新泽西州保罗斯伯勒）、Aqueduct（Aquatrols公司，新泽西州保罗斯伯勒）、Cascade Plus（精密实验室公司，伊利诺伊州沃基根）和OARS（水援助公司，北卡罗来纳州罗克山）。将感染性的嗜菌异小杆线虫幼虫添加到含有这四种表面活性剂的溶液中，并随时间监测线虫的活力和感染力。在两项试验中的一项中，与水对照以及含有Revolution或OARS的溶液相比，含有Aqueduct和Cascade Plus表面活性剂的溶液中线虫的存活率一直较高。在两项试验中，表面活性剂对线虫的感染力均无显著影响。研究结果表明，所检测的大多数常见草坪土壤表面活性剂应与昆虫病原线虫相容，并且有些表面活性剂可能会提高线虫的存活率。结果还表明，将昆虫病原线虫与大多数草坪土壤表面活性剂进行桶混对这些线虫不会构成重大风险。土壤表面活性剂对昆虫病原线虫性能的影响仍有待在田间进行研究。
