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          Institute: MPI für Evolutionsbiologie     Collection: Evolutionary ecology     Display Documents



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ID: 256548.0, MPI für Evolutionsbiologie / Evolutionary ecology
Local differences in immunocompetence reflect resistance of sticklebacks against the eye fluke Diplostomum pseudospathaceum
Authors:Kalbe, M.; Kurtz, J.
Language:English
Date of Publication (YYYY-MM-DD):2006-01
Title of Journal:Parasitology
Volume:132
Issue / Number:1
Start Page:105
End Page:116
Review Status:not specified
Audience:Not Specified
Abstract / Description:We investigated population differences in immunological adaptation of three-spined sticklebacks (Gasterosteus aculeatus) to one of their most abundant macroparasites, the eye fluke Diplostomum pseudospathaceum. We compared infection success in lab-bred fish of 2 populations in northern Germany, from a lake, where eye flukes are prevalent, and a river, where these parasites do not occur. In order to discriminate between protection through innate and acquired immunity, we exposed fish either only once or repeatedly. Lake fish were significantly less susceptible than river sticklebacks already after a single exposure, indicating that in sympatric hosts innate immunity plays the major role in the defence against this helminth infection. In both habitat types, previous exposures only marginally decreased infection rates within 12 weeks. Lake fish showed higher immunocompentence by means of respiratory burst activity and spleen size, regardless of the infection status. Furthermore, they were in a better energy status than river fish, as indicated by a higher hepatosomatic index and haematocrit value. Interestingly, F-1 hybrid fish of both populations ranged between the pure habitat types in parasite susceptibility as well as in immunological and condition parameters. Our results suggest that sticklebacks from lakes are better adapted to cope with higher parasite abundance in this habitat.
Free Keywords:parasite-host coevolution; local adaptation; fish; innate immunity; respiratory burst; acquired immunity; hybrid; habitat
External Publication Status:published
Document Type:Article
Affiliations:MPI für Limnologie/Abt. Evolutionsökologie
External Affiliations:Experimental Ecology, Universitätsstrasse 16, ETH-Zentrum, CHN JR.1, CH-8092 Zürich, Switzerland
Identifiers:ISSN:0031-1820 [ID-No:1]
DOI:10.1017/S00311820050008681 [ID-No:1]
LOCALID:2449/S 38459 [Listen-Nummer/S-Nummer]
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