We experimentally tested the effects of anticipated warmer temperatures on the feeding success of invasive pumpkinseed and chameleon cichlid and the functionally similar Southern Iberian chub. Singly, prey captures by chub and the cichlid were constant but those by pumpkinseed were affected by warming. Moreover, at warmer temperatures, chub captured much less prey in the presence of the cichlid and prey faster in the presence of pumpkinseed than with conspecifics. Warming effects are likely species dependent, and asymmetries in feeding success between species may be enhanced at warmer temperatures to the benefit of warm-water invaders.

我们通过实验测试了预期温度升高对入侵南瓜籽和变色龙慈鲷以及功能相似的南伊比利亚鲢的喂养成功的影响。单独地，chub 和慈鲷捕获的猎物是恒定的，但南瓜籽捕获的猎物受到变暖的影响。此外，在较温暖的温度下，在慈鲷存在的情况下，chub 捕获的猎物要少得多，而在南瓜籽存在的情况下，与同种相比，鲢鱼捕获的猎物要快得多。变暖效应可能取决于物种，并且在温暖的温度下，物种之间进食成功的不对称性可能会增强，从而有利于温水入侵者。