Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system.

Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system. Research Abstract Details 

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Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system. Abstract Text:

Organisms are often confronted with multiple enemy species. Defenses against different parasite species may be traded off against each other. However, if resistance is based on (potentially costly) general defense mechanisms, it may be positively correlated among parasites. In an experimental study, we confronted 19 clones from one Daphnia magna population with two bacterial and three microsporidian parasite species. All parasites were isolated from the same pond as the hosts. Host clones were specific in their susceptibility towards different parasite species, and parasite species were host-clone specific in their infectivity, spore production, and virulence, resulting in highly significant host-parasite interactions. Since the Daphnia's resistance to different parasite species showed no obvious correlation, neither general defense mechanisms nor trade-offs in resistance explain our findings. None of the Daphnia clones were resistant to all parasite species, and the average level of resistance was quite similar among clones. This may reflect a cost of defense, so that the cumulative cost of being resistant to all parasite species might be too high.

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Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Evolution; international journal of organic evolut

VOLUME: 57

Page Numbers: 784-92

Journal Abbreviation: Evolution

ISSN: 0014-3820

DAY: 4

MONTH: Apr

YEAR: 2003

Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system. Information

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LANGUAGE: eng

NlmUniqueID: 373224

Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system. Keywords Mesh Terms:

KEYWORDS: Species Specificity

MESH TERMS: physiology

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Grant and Affiliation Information for Evidence for strong host clone-parasite species interactions in the Daphnia microparasite system.

AFFILIATION: Laboratory of Aquatic Ecology, Catholic University of Leuven, Ch. De Bériotstraat 32, 3000 Leuven, Belgium. ellen.decaestecker@bio.kuleuven.ac.be

Country: United States

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MEDLINETA: Evolution

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