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Food Manipulation and Transport by a Carnivorous Land Snail, Haplotrema concavum

James W. Atkinson
Invertebrate Biology
Vol. 117, No. 2 (Spring, 1998), pp. 109-113
Published by: Wiley on behalf of American Microscopical Society
DOI: 10.2307/3226962
Stable URL: http://www.jstor.org/stable/3226962
Page Count: 5
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Food Manipulation and Transport by a Carnivorous Land Snail, Haplotrema concavum
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Abstract

When offered an egg of the land snail Anguispira alternata, the carnivorous land snail Haplotrema concavum manipulates it, rotating the egg with its foot and rubbing its mouth on the surface of the egg shell. After ~24 minutes of such manipulation, the egg is transported by the carnivore to a covered location where it is consumed. Transport is accomplished by a repetition of the following steps: disengagement and movement away from the egg, turning back toward the egg, extension of the body from the shell toward the egg, contact with the egg, and retrieval of the egg by pulling back toward the shell. Consumption of young hatchlings of other snail species involves a similar manipulation and transport of the prey.

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