The nematode-trapping efficacy of two chlamydospore-forming fungi against Haemonchus contortus in sheep.
An in vitro study was carried out to determine efficacy of Indian isolates of the nematode-trapping fungi Arthrobotrys musiformis and Duddingtonia flagrans to capture infective larvae of Haemonchus contortus. These fungi have previously been screened and selected for their survival in the gastrointestinal tract of sheep without losing growth and nematode capturing potential. Following the feeding of chlamydospores of these two fungi alone or in combination in sheep experimentally infected with Haemonchus contortus, coprocultures were set up to enumerate the infective third stage larvae. The number of larvae captured from faeces of fungus-fed sheep was significantly higher compared with fungus-unfed controls irrespective of the fungus used. The fungal combination produced no antagonistic effect and thus can be used as efficiently as the fungi alone in the biological control of animal parasitic nematodes.
Chauhan
J B
JB
Department of Biosciences, Sardar Patel University, Vallabh Vidyanagar 388120, Gujarat, India.
Sanyal
P K
PK
Subramanian
R B
RB
D000821:Animal Feed; D000818:Animals; D005243:Feces / Q000469:parasitology; D005658:Fungi / Q000502:physiology*; D006188:Haemonchiasis / Q000382:microbiology / Q000517:prevention & control* / Q000662:veterinary*; D006189:Haemonchus / Q000502:physiology; D007814:Larva; D008297:Male; D010274:Parasitology / Q000379:methods; D010572:Pest Control, Biological; D012756:Sheep; D012757:Sheep Diseases / Q000469:parasitology / Q000517:prevention & control*; D013172:Spores, Fungal