Feeding Dimorphism in a Mycophagous Nematode, Bursaphelenchus sinensis.

摘要: Phenotypic plasticity has been widely reported in animals and can drive investment new biological characters that engender ecological adaptability. The nematode family Diplogastridae, especially Pristionchus pacificus with its dramatic stomatal (feeding) dimorphism, become an important model system to analyze the evolutionary developmental aspects of polyphenism. However, this not confirmed other groups. In present study, we experimentally examined feeding dimorphism a fungal free-living nematode, Bursaphelenchus sinensis. laboratory culturing experiment, expressed i.e., small proportion population manifested as predatory form. This form only occurred females was clearly influenced by presence potential prey species. addition, ratio mycophagous varied among different food species grown monoculture on culture media. B. sinensis typologically similar monomorphic (specialized) predators belonging same family. some essential morphological were slightly from specialized predators, their behaviours disparate, suggesting predation is derived phylogenetic origin than predators.