Daphnia magna shows reduced infection upon secondary exposure to a pathogen | Zendy

Seanna McTaggart | Zendy; P.J. Wilson | Zendy; Tom J. Little | Zendy

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Daphnia magna shows reduced infection upon secondary exposure to a pathogen

Author(s) -

Seanna McTaggart,

P.J. Wilson,

Tom J. Little

Publication year - 2012

Publication title -

biology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.596

H-Index - 110

eISSN - 1744-957X

pISSN - 1744-9561

DOI - 10.1098/rsbl.2012.0581

Subject(s) - pathogen , biology , daphnia magna , host (biology) , fungal pathogen , daphnia , human pathogen , microbiology and biotechnology , strain (injury) , virology , zoology , ecology , toxicity , bacteria , genetics , chemistry , organic chemistry , anatomy , crustacean

Previous pathogen exposure is an important predictor of the probability of becoming infected. This is deeply understood for vertebrate hosts, and increasingly so for invertebrate hosts. Here, we test if an initial pathogen exposure changes the infection outcome to a secondary pathogen exposure in the natural host-pathogen system Daphnia magna and Pasteuria ramosa. Hosts were initially exposed to an infective pathogen strain, a non-infective pathogen strain or a control. The same hosts underwent a second exposure, this time to an infective pathogen strain, either immediately after the initial encounter or 48 h later. We observed that an initial encounter with a pathogen always conferred protection against infection compared with controls.

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