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  Infectivity of two nematode parasites, Camallanus lacustris and Anguillicola crassus, in a paratenic host, the three-spined stickleback Gasterosteus aculeatus

Krobbach, C. K., Kalbe, M., Kurtz, J., & Scharsack, J. P. (2007). Infectivity of two nematode parasites, Camallanus lacustris and Anguillicola crassus, in a paratenic host, the three-spined stickleback Gasterosteus aculeatus. Diseases of Aquatic Organisms, 74(2), 119-126.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D7E6-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D7E7-F
Genre: Journal Article

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Krobbach_2007.pdf (Publisher version), 134KB
 
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 Creators:
Krobbach, C. K.1, Author              
Kalbe, M.1, 2, Author              
Kurtz, J.1, Author              
Scharsack, J. P.1, Author              
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              
2Research Group Parasitology, Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445643              

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Free keywords: Anguillicola crassus; Camallanus lacustris; Gasterosteus aculeatus; infective dose; neozoic parasite; immune response; granulocyte : lymphocyte ratio; respiratory burst
 Abstract: Three-spined sticklebacks Gasterosteus aculeatus are frequent paratenic hosts of the nematode parasites Anguillicola crassus and Camallanus lacustris. As paratenic hosts, sticklebacks could spread infection by carrying high numbers of infective stages. In contrast, low infective ability of either parasite for the paratenic host could hinder the spread of infection. In the present study, G. aculeatus was, for the first time, infected under controlled laboratory conditions with defined doses of the parasites. Sticklebacks were exposed to 6, 12, 18 and 24 parasite larvae to determine the infective ability of the 2 nematode species. There were significantly higher infection rates for C. lacustris (18 to 49 %) than for A. crassus (4 to 14 %) at each exposure dose. In C. lacustris-infected sticklebacks, infection rates tended to be highest after exposure to 12 C. lacustris larvae and lowest after exposure to 24 parasites. In A. crassus-infected sticklebacks, no effect of parasite exposure dose on infection rates was observed. Immunity parameters such as respiratory burst activity and lymphocyte proliferation of head kidney leukocytes recorded 18 wk post exposure were not significantly affected by either parasite or exposure dose. Granulocyte:lymphocyte ratios were elevated only within the stickleback group showing the highest infection intensity of C. lacustris, i.e. to those exposed 18 parasites.

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Language(s): eng - English
 Dates: 2007-02
 Publication Status: Published in print
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 Identifiers: eDoc: 330167
Other: 2582/S 38740
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Title: Diseases of Aquatic Organisms
  Alternative Title : Dis Aquat Org
Source Genre: Journal
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Pages: - Volume / Issue: 74 (2) Sequence Number: - Start / End Page: 119 - 126 Identifier: ISSN: 0177-5103