Predation of entomopathogenic nematodes by <Emphasis Type="Italic">Sancassania</Emphasis> sp. (Acari: Acaridae) |
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Authors: | Mehmet Karagoz Baris Gulcu Ibrahim Cakmak Harry K Kaya Selcuk Hazir |
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Institution: | (1) Department of Plant Protection, Faculty of Agriculture, Adnan Menderes University, Aydin, Turkey;(2) Department of Biology, Faculty of Science and Arts, Adnan Menderes University, Aydin, Turkey;(3) Department of Nematology, University of California, Davis, CA 95616, USA |
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Abstract: | Predation of the entomopathogenic nematode, Steinernema feltiae (Rhabditida: Steinernematidae), by Sancassania sp. (Acari: Acaridae) isolated from field-collected scarab larvae was examined under laboratory conditions. Adult female
mites consumed more than 80% of the infective juvenile (IJ) stage of S. feltiae within 24 h. When S. feltiae IJs were exposed to the mites for 24 h and then exposed to Galleria mellonella (Lepidoptera: Pyralidae) larvae, the number of nematodes penetrating into the larvae was significantly lower compared to
S. feltiae IJs that were not exposed to mites (control). Soil type significantly affected the predation rate of IJs by the mites. Mites
preyed more on nematodes in sandy soil than in loamy soil. We also observed that the mites consumed more S. feltiae IJs than Heterorhabditis bacteriophora (Rhabditida: Heterorhabditidae). No phoretic relationship was observed between mites and nematodes and the nematodes did
not infect the mites. |
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Keywords: | Steinernema feltiae Heterorhabditis bacteriophora Nematode predator Nematophagous mite Nematode antagonist |
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