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The dispersion of Echinococcus granulosus in the intestine of dogs

Lymbery, A.J.ORCID: 0000-0002-0542-3446, Hobbs, R.P. and Thompson, R.C.A. (1989) The dispersion of Echinococcus granulosus in the intestine of dogs. Journal of Parasitology, 75 (4). pp. 562-570.

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We studied the dispersion of adult Echinococcus granulosus in the intestine of experimentally infected dogs at 2 scales of habitat use. On a coarse scale, worms were found most frequently in the anterior third of the small intestine. On a fine scale, clumps or aggregations, typically of 4-5 worms in an area of 12 mm 2, occurred throughout the anterior two-thirds of the intestine. The most likely proximate cause of aggregative behavior is attraction between individual worms. There are at least 2 equally plausible ultimate causes of the behavior: to enhance cross-fertilization and to improve the quality of the environment. Restriction of worms to the anterior small intestine may be a consequence of aggregative behavior on a finer scale or a response to different proximate and ultimate factors.

Item Type: Journal Article
Murdoch Affiliation: School of Veterinary Studies
Publisher: American Society of Parasitologists
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