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Effects of Dung Beetle Activity on the Number of Nematode Parasites Acquired by Grazing Cattle
G. Truman Fincher
The Journal of Parasitology
Vol. 61, No. 4 (Aug., 1975), pp. 759-762
Stable URL: http://www.jstor.org/stable/3279480
Page Count: 4
You can always find the topics here!Topics: Pastures, Dung beetles, Calves, Beetles, Parasites, Feces, Fences, Population growth, Livestock, Roundworms
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Parasitized steers were used to contaminate 3 pastures containing dung beetle populations of different densities. Six parasite-free calves were then allowed to graze the pastures for 43 to 45 days. Two calves that grazed a pasture with a dung beetle population rendered lower than normal by screening and trapping acquired 9 times more parasites than 2 calves that grazed a pasture on which captured beetles were released. Two calves that grazed a pasture with a natural dung beetle population acquired 4 times more worms than the calves on pasture with the increased beetle population. The results indicated that the 2 major genera of nematodes present (Ostertagia and Cooperia) were significantly reduced in number by dung beetle activity.
The Journal of Parasitology © 1975 The American Society of Parasitologists