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Heterorhabditis bacteriophora is a species of entomopathogenic nematode known commonly as beneficial nematodes. They are microscopic and are used in gardening as a form of biological pest control . They are used to control ants , fleas , moths , beetles , flies , weevils , and other pests.
The mechanism by which insect parasitic nematodes have an effect on plant parasitic nematodes remains unknown. Although this effect is considered beneficial for agricultural systems where plant parasitic nematodes cause crop damage, it raises the question of what other effects are possible.
Soil steaming is an efficient method to kill nematodes before planting a crop, but indiscriminately eliminates both harmful and beneficial soil fauna. The golden nematode Globodera rostochiensis is a particularly harmful pest that has resulted in quarantines and crop failures worldwide.
Nematophagous fungi have been found throughout the world in a wide range of habitats and climates, but few from extreme environments. Most studied have been the species that attack the nematodes of interest to farmers, horticulturists and foresters, but there are large numbers of species as yet undescribed.
Bursaphelenchus is a genus of nematodes (roundworms) in the order Aphelenchida.Most are obligate mycophages, but some feed on wood, with two species, the red ring nematode (B. cocophilus) and the pine wood nematode (B. xylophilus), economically significant as pests of coconut palms and of pine trees, respectively.
beneficial nematodes attacking insects (e.g. Steinernema feltiae) or slugs (e.g. Phasmarhabditis hermaphrodita) entomopathogenic viruses (e.g.. Cydia pomonella granulovirus). weeds and rodents have been controlled with microbial agents. Various animal, fungal, and plant organisms and extracts have been used as biopesticides.