@article {1449,
	title = {Dung beetle activity and the development of trichostrongylid eggs into infective larvae in cattle faeces},
	journal = {Veterinary Parasitology},
	volume = {118},
	number = {1-2},
	year = {2003},
	note = {julio has hard copy disease ecology, parasite transmission, scarbaeinae, ecological function},
	month = {Dec 1},
	pages = {157-163},
	abstract = {In the perspective to reduce the use of antiparasitic drugs, any interaction between the processes that control the development of parasite eggs into infective larval stages (L3) in dung and the activities of different dung-breeding organisms becomes of interest. The objective of the present study was to determine whether dung beetle activity affected the development of parasite larvae in cattle dung. Faeces containing eggs of parasites (predominately Cooperia spp.) were pooled according to high (250-600 epg) or low (approx. 100 epg) egg counts. Experimental dung pats were formed for each category of faeces and to half of these pats, dung beetles (20 Aphodius rufipes, 20 A. scybalarius syn. rufus) were added and kept for 12 days at 21degreesC (+/-1degreesC) and 90\% RH (+/-5\% RH). Beetles were then removed and the pats were divided in two where half the pat was incubated for an additional 12 days at 21degreesC (+/-1degreesC) and 90\% RH (+/-5\% RH) and the other half was immediately analysed. A greater number of L3 were recovered from the dung subjected to beetle activity compared with control dung (P < 0.001). However, following an additional 12 days incubation of the dung, similar numbers of L3 were recovered from beetle-affected dung with high egg counts, whereas there were significantly greater numbers of L3 derived from the control dung (P < 0.001). There was no significant difference in L3 recovery in the two categories of pats (i.e. high and low nematode egg counts). The results indicate that activity by Aphodius spp. in fresh dung can optimise conditions for nematode development to the infective larval stage if favourable environmental conditions prevail. Such synergistic effect may be due to the fact that dung beetles used in this study are dung dwellers, i.e. no substantial amount of the dung is removed or burrowed as these beetles feed, lay their eggs and the larval development takes place in brood chambers inside the dung. (C) 2003 Elsevier B.V. All rights reserved.},
	keywords = {Aphodius spp., avermectins, cattle dung, cattle-nematoda, cooperia-oncophora, Dung beetles, free-living stages, grazing cattle, impact, ivermectin dung beetle, nematode parasites, ostertagia-ostertagi, SURVIVAL, sweden},
	url = {<Go to ISI>://000187397900017},
	author = {Chirico, J. and Wiktelius, S. and Waller, P. J.}
}
@article {1450,
	title = {Dung beetle activity and the development of trichostrongylid eggs into infective larvae in cattle faeces},
	journal = {Veterinary Parasitology},
	volume = {118},
	number = {1-2},
	year = {2003},
	note = {julio has hard copy},
	month = {Dec 1},
	pages = {157-163},
	abstract = {In the perspective to reduce the use of antiparasitic drugs, any interaction between the processes that control the development of parasite eggs into infective larval stages (L3) in dung and the activities of different dung-breeding organisms becomes of interest. The objective of the present study was to determine whether dung beetle activity affected the development of parasite larvae in cattle dung. Faeces containing eggs of parasites (predominately Cooperia spp.) were pooled according to high (250-600 epg) or low (approx. 100 epg) egg counts. Experimental dung pats were formed for each category of faeces and to half of these pats, dung beetles (20 Aphodius rufipes, 20 A. scybalarius syn. rufus) were added and kept for 12 days at 21degreesC (+/-1degreesC) and 90\% RH (+/-5\% RH). Beetles were then removed and the pats were divided in two where half the pat was incubated for an additional 12 days at 21degreesC (+/-1degreesC) and 90\% RH (+/-5\% RH) and the other half was immediately analysed. A greater number of L3 were recovered from the dung subjected to beetle activity compared with control dung (P < 0.001). However, following an additional 12 days incubation of the dung, similar numbers of L3 were recovered from beetle-affected dung with high egg counts, whereas there were significantly greater numbers of L3 derived from the control dung (P < 0.001). There was no significant difference in L3 recovery in the two categories of pats (i.e. high and low nematode egg counts). The results indicate that activity by Aphodius spp. in fresh dung can optimise conditions for nematode development to the infective larval stage if favourable environmental conditions prevail. Such synergistic effect may be due to the fact that dung beetles used in this study are dung dwellers, i.e. no substantial amount of the dung is removed or burrowed as these beetles feed, lay their eggs and the larval development takes place in brood chambers inside the dung. (C) 2003 Elsevier B.V. All rights reserved.},
	keywords = {Aphodius spp., avermectins, cattle dung, cattle-nematoda, cooperia-oncophora, Dung beetles, free-living stages, grazing cattle, impact, IVERMECTIN, nematode parasites, ostertagia-ostertagi, SURVIVAL, sweden},
	url = {<Go to ISI>://000187397900017},
	author = {Chirico, J. and Wiktelius, S. and Waller, P. J.}
}
@article {1897,
	title = {Effects of cattle treatment with a fluazuron pour-on on survival and reproduction of the dung beetle species Onthophagus gazella (Fabricius)},
	journal = {Veterinary Parasitology},
	volume = {143},
	year = {2007},
	pages = {380-384},
	abstract = {While resistance against many other classes of acaricides has been described, products containing benzoylphenyl urea are currently still successfully used against the pesticide-resistant blue tick (Boophilus decoloratus) in South Africa. In order to assess any adverse impact of these tickicides on the important dung beetle (Coleoptera: Scarabaeidae) fauna, a bioassay was undertaken on the ecotoxicological effects of a fluazuron (benzoylphenyl urea) pour-on formulation (Acatak1) on the survival and reproduction of the African dung beetles species Onthophagus gazella (Fabricius). The experiment yielded no significant differences in adult or larval survival, egg production, fecundity and fertility between the control and treatment group following three beetle generations over. These results suggested that treatment of cattle with the fluazuron pour-on formulation Acatak1 was not detrimental to the selected dung beetle species in any notable way.},
	keywords = {Acaricide, Benzoylphenyl urea, Boophilus decoloratus, dung beetle, ecotoxicological effect, Fluazuron, Onthophagus gazella},
	author = {Kryger, U. and Deschodt, C. and Davis, A. L. V. and Scholtz, Clarke H.}
}
@article {2137,
	title = {Effects of avermectin residues in cattle dung on dung beetle (Coleoptera: Scarabaeidae) reproduction and survival},
	journal = {Veterinary Parasitology},
	volume = {48},
	year = {1993},
	pages = {127-137},
	abstract = {Scarabaeine dung beetles feeding on dung from cattle treated with an injection of avermectin at a therapeutic dose to control internal parasites, show larval mortality, mortality of immature adults, reduced egg production, and inhibited ovariole development for periods of 1-4 weeks following treatment. In winter rainfall regions of Australia, feeding by newly emerged adults of an introduced species, Onthophagus binodis, resulted in shredding of cattle dung between December and May. Production of brood masses and eggs resulted in dung being buried from September to November. Feeding by newly emerged adults of a native species, Onthophagusferox, resulted in dung being buried in May and June, and production of brood masses for breeding resulted in dung burial between September and November. There are thus 2-6 months of the year when injection of cattle with avermectin would affect mortality of newly emerged beetles, and 3 months of the year when avermectin treatment of cattle would affect dung beetle oviposition or larval survival. Beetles were attracted to fresh dung for 2-4 days, and most had left the pad within a week. There are no data to indicate the effects of aver- mectin residues in dung on dung beetle populations and on beetle fitness. Tests should be done to determine ifavermectins in slow release devices have a greater effect on dung beetles than injections, and to determine what effects both have on dung beetle populations. },
	author = {Ridsdill-Smith, T. J.}
}
@article {2233,
	title = {The effect of faecally excreted ivermectin and fenbendazole on the insect colonisation of cattle dung following the oral administration of sustained-release boluses},
	journal = {Veterinary Parasitology},
	volume = {62},
	year = {1996},
	pages = {253-266},
	abstract = {The effects of faecal drug residues following the administration of anthelmintics in the form of sustained-release boluses, on dung-colonising Coleoptera and Diptera are reported. In blind field trials, pats of standard weight and size were prepared from the dung of cattle treated with an ivermectin (Ivomec SR Bolus {\textregistered}, MSD Agve0 or a fenbendazole (Panacur Bolus {\textregistered}, Hoechs0 sustained-release bolus, and from a third control group of cattle that received no treatment. Pats were recovered after 7, 14, 21 and 42 days in the field and searched for invertebrates. There were no differences in the numbers of adult beetles found in the pats from the three treatment groups. Pats made from the dung of ivermectin-treated animals contained no larval Diptera Cyclorrhapha and significantly fewer larval Scarabaeidae than pats made from the dung of the other two groups. Furthermore, larval Scarabaeidae in the ivermectin pats were inhibited in their development. The pats from fenbendazole-treated animals contained similar numbers of larval Scarabaeidae and Diptera to the pats from untreated animals throughout the trial. At 42 days, the solid matter of the control and fenbendazole-containing cow pats was reduced to a crumbling, granular texture, while the pats from the ivermectin-treated animals were solid and compacted. Pitfall trapping, using traps baited with dung from the three groups, showed no significant difference between the numbers of adult Scarabaeidae attracted, though a trend towards higher numbers attracted to the dung of both anthelmintic-treated groups was evident. The results provide evidence of the toxic effects of excreted ivermectin on key dung-colonising families of insects, and show that fenbendazole lacks such toxic effects. },
	keywords = {cattle-nematoda, Controlled-release technology, Dung-insects, Fenbendazole, lvermectin},
	author = {Strong, L. and Wall, R. and Woolford, A, and Djeddour, D.}
}
@article {2299,
	title = {Influence of nematophagous fungi, earthworms and dung burial on development of the free-living stages of Ostertagia (Teladorsagia) circumcincta in New Zealand.},
	journal = {VETERINARY PARASITOLOGY},
	volume = {104},
	number = {2},
	year = {2002},
	note = {have copy},
	pages = {119-129},
	keywords = {development, dung beetle, dung burial, earthworms, ecological function, ecosystem service, ecosystem services, free-living stages, nematophagous fungi, New Zealand, Ostertagia (Teladorsagia) circumcincta},
	author = {Waghorn, TS.}
}
@article {2310,
	title = {A comparison of the development and survival of the dung beetle, Onthophagus taurus (Schreb.) when fed on the faeces of cattle treated with pour-on formulations of eprinomectin or moxidectin},
	journal = {Veterinary Parasitology},
	volume = {99},
	year = {2001},
	pages = {155-168},
	abstract = {Faeces voided by 1-year old cattle at 3{\textendash}70 days after treatment with a pour-on formulation of moxidectin had no detectable effects on development or survival of the common dung beetle Onthophagus taurus. In contrast, faeces voided by cattle treated with a pour-on formulation of eprinomectin were associated with high juvenile mortality during the first 1{\textendash}2 weeks after treatment. Increased mortality also occurred among newly emerged beetles fed on faeces collected 3 days after eprinomectin treatment and there was evidence of suppressed brood production among those that survived. This effect was still apparent even after insects fed for a further 10 days on the faeces of untreated cattle. A model simulating the effects of drug residues on dung beetle populations suggests that in the absence of immigration a single treatment of eprinomectin is capable of reducing beetle activity in the next generation by 25{\textendash}35\%. Effects are likely to be greatest when treatment coincides with emergence of a new generation of beetles.},
	keywords = {Dung beetles, eprinomectin, Modelling, moxidectin, Pour-on formulations},
	author = {Wardhaugh, Keith G. and Longstaff, B. C. and Morton, R.}
}
