Only helpful when required: a longevity cost of harbouring defensive symbionts

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Vorburger, C., & Gouskov, A. (2011). Only helpful when required: a longevity cost of harbouring defensive symbionts. Journal of Evolutionary Biology, 24(7), 1611-1617. https://doi.org/10.1111/j.1420-9101.2011.02292.x