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Ducks in evolution's crossfire
Email: Nick Atkinson - nwa@entangled.org News from The Scientist 2004, 5(1):20041122-01
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Research on brood parasites usually focuses on the evolutionary arms race between host and parasite, but findings published this week in Nature highlight the importance of a broader perspective. The paper presents seemingly paradoxical evidence that even when the parasite imposes a minimal cost, it still isn't tolerated by the host. The reason lies in an intraspecific battle being fought within the host species: the parasite is simply caught in the crossfire.
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