Effect of earthworms on the disappearance rate of cattle droppings
It is well known that several earthworm species aggregate under dung pats (Svendsen, 1957; Boyd, 1958; Martin and Charles, 1979). In addition, pot experiments (Guild, 1955; Barley, 1959) have shown that dung is readily eaten, and thereby removed from the surface by earthworms. When sufficiently abundant, worms have therefore been supposed to play an important role in the decay and disappearance of dung pats (e.g. Barley, 1961). There is, however, a lack of studies assessing the actual impact of worms in the field combining (1) quantification ofearthworm populations under and in dung pats, and (2) measurements ofthe disappearance rate of the pats.
KeywordsDung Beetle Disappearance Rate Cattle Dung Earthworm Population Total Fresh Weight
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- WJ Guild McL. (1955) Earthworms and soil structure. In Soil Zoology (ed. D. K. McE. Kevan), Butterworths Scientific Publications, London. 83-89.Google Scholar
- RL Harris EH Ilcken RR Blume and DD Oehler (1980)The effects of horn fly larvae and dung beetles on ammonia loss from bovine dung.Southwest. Entomol.,5,104–106.Google Scholar
- NA Martin and JC Charles (1979) Lumbricid earthworms and cattle dung in New Zealand pastures. In Proc. 2nd Australasian Conf. Grassland Invertebrate Ecol. (eds. T. K. Crosby and R. P. Pottinger), Government Printer, Wellington. 52-55.Google Scholar
- JW Reynolds (1977)The earthworms (Lumbricidae and Sparganophilidae) of Ontario.Life Sci. Misc. Pub., R. Onto Mus., Toronto.141pp.Google Scholar
- JE Satchell (1971) Earthworms. In Methods of Study in Quantitative Soil Ecology,’ Population, Production and Energy Flow (ed. J. Phillipson). IBP Handbook no. 18, Blackwell, Oxford. 107-127.Google Scholar