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Schistocephalus solidus: Establishment of tapeworms in sticklebacks - fast food or fast lane?

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons56711

Hammerschmidt,  Katrin
Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons56788

Kurtz,  Joachim
Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Citation

Hammerschmidt, K., & Kurtz, J. (2007). Schistocephalus solidus: Establishment of tapeworms in sticklebacks - fast food or fast lane? Experimental Parasitology, 116(2), 142-149. doi:10.1016/j.exppara.2006.12.013.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-D7A0-D
Abstract
The penetration of the intestinal mucosal wall is supposed to be critical for helminth parasite infestation, but has rarely been analyzed in detail. We here studied the establishment process of Schistocephalus solidus tapeworms in their second intermediate host, the threespined stickleback, from oral uptake after experimental exposure, to passage through the gastro-intestinal tract and arrival in the fish body cavity. Using histological techniques, we found tapeworms to penetrate the intestine within 14-24 h, spending most of the time in the stomach lumen and only a very short period in the intestine. Unexpectedly, tapeworms lost their outer layer, together with the cercomer, in the intestine lumen rather than later during intestine wall penetration. Once exposed, the underlying tegument with microtriches might serve to facilitate migration of the parasite into the body cavity.