Walter D E, Hudgens R A, Freckman D W
Natural Resource Ecology Laboratory, Colorado State University, 80523, Fort Collins, CO, USA.
Department of Nematology, University of California, 92521, Riverside, CA, USA.
Oecologia. 1986 Oct;70(3):357-361. doi: 10.1007/BF00379497.
Free-living nematodes may be attacked and eaten by soil mites which are normally considered fungivores or saprophages. Three species in the genus Tyrophagus, common inhabitants of grassland soils and also common pests in stored products, museums and laboratories, are predators of nematodes. All active stages of the mites will voraciously consume nematodes. When offered nematodes and a choice of other food (baker's yeast and algae), 11% of the Tyrophagus putrescentiae, 23% of the T. zachvatkini, and 56% of the T. similis tested fed on nematodes. Tyrophagus zechvatkini and similis were reared on a diet consisting entirely of nematodes, and developed at rates similar to a fungal diet and produced viable offspring. Agar cultures of Aphelenchus avenae which were inoculated with five mating pairs of Tyrophagus zachvatkini had populations that were one-third less than mite-free controls. Observations indicate that nematodes may be attacked by tyrophagid mites when in a dry, anhydrobiotic state.
自由生活的线虫可能会受到土壤螨类的攻击和捕食，而土壤螨类通常被认为是食真菌者或腐食者。食酪螨属的三个物种，是草原土壤中的常见居民，也是储存产品、博物馆和实验室中的常见害虫，它们是线虫的捕食者。螨类的所有活跃阶段都会贪婪地捕食线虫。当提供线虫和其他食物（面包酵母和藻类）供选择时，受试的腐食酪螨中有11%、扎氏食酪螨中有23%、相似食酪螨中有56%以线虫为食。扎氏食酪螨和相似食酪螨以完全由线虫组成的食物饲养，并以与真菌食物相似的速度发育并产生可存活的后代。接种了五对扎氏食酪螨的燕麦真滑刃线虫琼脂培养物中的线虫数量比无螨对照少三分之一。观察表明，线虫在干燥的隐生状态下可能会受到食酪螨的攻击。
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