Publications

the capability of the predacious fungus arthrobotrys oligospora (hyphomycetales) to reduce numbers of infective larvae of ostertagia ostertagi (trichostrongylidae) in cow pats and herbage during the grazing season in denmark.	artificially prepared cow pats containing ostertagia ostertagi eggs were deposited on two pasture plots in may, june and july 1986. half of the cow pats, placed on one plot, were inoculated with 2000 conidia per gram faeces of the predacious fungus arthrobotrys oligospora. on the other plot fungus-free control cow pats were placed at the same time. in the faeces generally fewer infective o. ostertagi larvae developed in the inoculated than in the control cow pats. on the herbage around the contr ...	1988	3235796
interactions between the predacious fungus arthrobotrys oligospora and third-stage larvae of a series of animal-parasitic nematodes.	interactions between the predacious hyphomycete arthrobotrys oligospora and third-stage larvae of nine animal-parasitic nematodes were tested in vitro. the trap-inducing capabilities of the ruminant trichostrongylus cooperia oncophora, c. curticei, haemonchus contortus and ostertagia ostertagi and of equine cyathostomes were almost comparable to those of free-living soil nematodes, and significantly higher than those of the porcine oesophagostomum dentatum and oe. quadrispinulatum and of the mur ...	1988	3347992
field experiments on the ability of arthrobotrys oligospora (hyphomycetales) to reduce the number of larvae of cooperia oncophora (trichostrongylidae) in cow pats and surrounding grass.	in field experiments, conducted on parasite-free grass plots in two consecutive summers, artificially prepared cow pats containing cooperia oncophora eggs were inoculated with the nematode-trapping fungus arthrobotrys oligospora. numbers of infective c. oncophora larvae isolated from the pats as well as from the surrounding herbage were subject to an approximately ten-fold reduction as compared with numbers in fungus-free pats and herbage surrounding these. this reduction was undoubtedly a resul ...	1987	3571923
mycoflora and mycotoxin-producing fungi of air-dust particles from egypt.	using the dilution-plate method, 27 genera and 64 species were collected from 20 air-dust samples on glucose - (24 genera and 57 species) and cellulose - (21 genera and 45 species) czapek's agar at 28 degrees c. there are basic similarities between the mycoflora of air-dust on the two media and the most prevalent species were aspergillus niger, a. flavus, a. ochraceus, a. terreus, a. versicolor, penicillium chrysogenum, p. funiculosum, alternaria alternata, cladosporium herbarum, fusarium oxyspo ...	1986	2938009
laboratory experiments to evaluate the ability of arthrobotrys oligospora to destroy infective larvae of cooperia species, and to investigate the effect of physical factors on the growth of the fungus.	laboratory investigations were designed to study the influence of temperature, ph and oxygen tension on the growth of arthrobotrys oligospora, a nematode-trapping microfungus. experiments were performed to evaluate the potential role of a. oligospora in destroying third-stage larvae of cooperia spp. on agar plates and in cattle faeces. the fungus had a growth rate optimum at 23 degrees c and ph 6. anaerobic cultivation for 23 hours at 23 degrees c and 39 degrees c inhibited fungal growth, but it ...	1985	4040943
parasitic and saprophytic abilities of the nematode-attacking fungus hirsutella rhossiliensis.	the ability of hirsutella rhossiliensis to colonize various substrates in sterile and nonsterile soil was measured. hirsutella rhossiliensis was recovered from 67% and 77% of living, inoculated criconemella xenoplax incubated in sterile and nonsterile soil, respectively. in contrast, the fungus was recovered from 100% and 18% of heat-killed, inoculated nematodes incubated on sterile and nonsterile soil, respectively. hirsutella rhossiliensis was readily recovered from inoculated, autoclaved whea ...	1985	19294104
development of fate of electron-dense microbodies in trap cells of the nematophagous fungus arthrobotrys oligospora.	the development of electron-dense microbodies in cells of capture organs of the nematophagous fungus arthrobotrys oligospora was studied with different ultrastructural techniques. kinetic experiments revealed that the synthesis of these microbodies started in a very early stage of trap formation; the organelles originated from special regions of endoplasmic reticulum by budding. mature organelles were surrounded by a single membrane of approximately 9 nm (kmno4-fixation) and lacked crystalline i ...	1985	4091542
an electron-microscopical analysis of capture and initial stages of penetration of nematodes by arthrobotrys oligospora.	a detailed analysis was made of the capture and subsequent penetration of nematodes by the nematophagous fungus arthrobotrys oligospora using different electron-microscopical techniques. capture of nematodes by this fungus occurred on complex hyphal structures (traps) and was effectuated by an adhesive coating, present on these trap cells. the adhesive layer was largely fibrillar in nature and was absent on cells of normal hyphae. following capture, penetration hyphae were formed at those sites ...	1985	4091541
isolation and partial characterization of a carbohydrate-binding protein from a nematode-trapping fungus.	a developmentally regulated carbohydrate-binding protein from the capture organs of arthrobotrys oligospora, not present on hyphae, was isolated and partially characterized. surface structures of a. oligospora were radiolabeled with [125i]iodosulfanilic acid. the fungus was homogenized, and the homogenate was passed over an affinity column containing n-acetyl-d-galactosamine immobilized to sepharose 6b. the bound radiolabeled protein was eluted from the affinity column with a glycine-hydrochlori ...	1984	6539773
role of n-acetylgalactosamine-specific protein in trapping of nematodes by arthrobotrys oligospora.	an n-acetylgalactosamine-specific protein was purified from mycelial homogenates of the nematode-trapping fungus arthrobotrys oligospora by using affinity chromatography. the molecular weight of the protein was estimated at 22,000 by its comparative mobility on sodium dodecyl sulfate-polyacrylamide slab gels. pretreatment of nematodes with the purified protein reduced entrapment, indicating a role for the sugar-binding protein in recognition and capture of prey by the fungus.	1984	16346574
an endogenous rhythm of trap formation in the nematophagous fungus arthrobotrys oligospora.	in the predacious fungus arthrobotrys oligospora fres., the number and distribution of traps formed after the addition of living nematodes to the colonies were determined. at 21°c the traps were formed periodically; the mean period was 42.3±0.8 h. the periodicity was independent of light-dark (ld) cycles of 24 h (10:14). temperature influenced the hyphal elongation but did not affect the periodic trap formation; at lower temperatures the peaks of trap formation were close together, showing parti ...	1981	24302318
[in vitro predatory activity of a strain of arthrobotrys oligospora fres. against a zooparasitic nematode].	the in vitro predatory activity of arthrobotrys oligospora fres. against larvae of haemoncus contortus (rudolphi) cobb. was investigated on sheepdung agar. the technique employed is described and discussed. the data and observations presented indicate that temperature and number of larvae added to the fungus appear as important factors regulating the capturing efficiency. high trapping percentages were observed at 15 degrees c and 22 degrees c after a 24 hours' contact period, whereas at 10 degr ...	1977	879676
studies on the nutrition of arthrobotrys oligospora fres. and a. robusta dudd. ii. the predaceous phase.		1966	5950269
studies on the nutrition of arthrobotrys oligospora fres. and a. robusta dudd. i. the saprophytic phase.		1966	5950268