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原文連結
論文資訊
- 類型：已發表論文
- 日期：2014-09-18
摘要
Protective 互利共生s, where a symbiont reduces the negative effects of another 物種 on a shared host, represent a common type of 物種 interaction in natural communities, yet it is still unclear what ecological conditions might favor their 湧現. Studies suggest that the initial 演化 of protective mutualists might involve closely related pathogenic variants with similar life histories, but different competitive abilities and impacts on host fitness. We derive a model to evaluate this hypothesis and show that, in general, a protective variant cannot spread from rarity or exclude a more pathogenic strain. While the conditions allowing mutualist invasion are more likely with increased environmental productivity, they still depend on initial densities in the invaded patch exceeding a threshold, highlighting
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