Cover image: Eurasian red squirrel feeding on pine seeds. Comparing the personality of red squirrels between areas with only red squirrels and areas invaded by the alien grey squirrel, the authors found that the spillover of an intestinal parasite from grey to red squirrels (parasite‐mediated competition) resulted in a reduction of costly personality traits, such as activity. This could, ultimately, reduce foraging success in infected red squirrels. See pp. 1559–1569. Photo credit: Ambrogio Molinari.

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封面图片和发行信息

封面图片：以松树种子为食的欧亚红松鼠。比较只有红松鼠和外来灰松鼠入侵的地区之间的红松鼠的个性，作者发现肠道寄生虫从灰松鼠扩散到红松鼠（寄生虫介导的竞争）导致代价高昂的人格特质减少，例如活动。最终，这可能会减少被感染的红松鼠觅食的成功。参见第1559-1569页。图片提供：Ambrogio Molinari。