Abstract
AbstractThe host‐searching ability ofNeoaplectana feltiaeFilipjev (=S. bibionisBovien) (Nematoda: Steinernematidae) in response to larvae of a mushroom fly,Lycoriella solaniWinn. was examined in a mushroom substrate. Individuals ofL. solaniwere less attractive for the parasite than larvae ofGalleria mellonellaL. The nematode juveniles penetrated a 22 cm layer of casing mixture within 2–4 days. In the casing alone nematode effectiveness was better than in mushroom compost or in compost and casing together. In the casing mixture parasite dosages of 20 and 100 juveniles per cm2led to 22% and 45% parasitization ofL. solanirespectively, while allG. mellonellalarvae were parasitized at both dosages. The prevalence of nematode infection depended on the content of water in the mushroom substrate. The highestN. feltiaeinfectivity was observed, when the ratio of the dry casing weight to the weight of water content was 1:2.5. The practical aspects of the observed phenomena, essential for the use ofN. feltiaein the protection of commercial mushroom cultivation are discussed.
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