Faedo M, Larsen M, Waller P J
CSIRO Division of Animal Production, McMaster Laboratory, Blacktown, NSW, Australia.
Vet Parasitol. 1997 Oct;72(2):149-55. doi: 10.1016/s0304-4017(97)00055-1.
Nine isolates of Duddingtonia flagrans and eight isolates of Arthrobotrys spp. which originated from a field survey for the presence of nematophagous fungi in fresh dung of livestock in Australia were used in this study. Comparisons were made between the ability of the different isolates to survive gut passage and subsequently reduce infective larval numbers in sheep faeces. Fungal spores (conidia and/or chlamydospores) were administered orally to sheep in doses ranging from 1 X 10(5) to 4.5 X 10(6) spores. There was no apparent consistent survival of Arthrobotrys spp., whereas D. flagrans showed excellent survival capacity which resulted in profound reductions in Trichostrongylus colubriformis larval numbers in culture. This provides clear evidence that D. flagrans is an ideal candidate as a potential biological control agent for nematode parasites of sheep.
本研究使用了从澳大利亚家畜新鲜粪便中进行捕食线虫真菌实地调查分离得到的9株布氏节丛孢菌（Duddingtonia flagrans）和8株节丛孢属（Arthrobotrys spp.）真菌。对不同分离株在肠道通过后存活的能力以及随后降低绵羊粪便中感染性幼虫数量的能力进行了比较。将真菌孢子（分生孢子和/或厚垣孢子）以1×10⁵至4.5×10⁶个孢子的剂量口服给绵羊。节丛孢属真菌没有明显一致的存活情况，而布氏节丛孢菌表现出优异的存活能力，这导致培养物中蛇形毛圆线虫幼虫数量大幅减少。这提供了明确的证据，表明布氏节丛孢菌是绵羊线虫寄生虫潜在生物防治剂的理想候选者。
