Abstract
Natural selection can favor the coexistence of sexual and asexual forms of a species even within a single ecosystem, when hotspots of coevolution between hosts and parasites occur next to coldspots.
MeSH terms
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Animals
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Biological Evolution*
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Ducks / parasitology
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Ducks / physiology
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Feeding Behavior
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Female
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Geography*
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Host-Parasite Interactions
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Male
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Models, Biological*
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Snails / genetics
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Snails / parasitology
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Snails / physiology*