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Larger individuals typically have lower mass‐specific metabolic rates compared to small ones (hypometric scaling). This trend is most evident across species where body size differences can be extreme. Yet, within‐species studies are critical to decipher the morphological and physiological mechanisms responsible. However, in most species, the relatively small range in body and appendage size of...
Aposematic signals often allow chemically defended prey to avoid attack from generalist predators, including jumping spiders. However, not all individual predators in a population behave in the same way. Here, in laboratory trials, we document that most individual Phidippus regius jumping spiders attack and reject chemically defended milkweed bugs (Oncopeltus fasciatus), immediately releasing them...
Predators often avoid aposematic prey as a result of aversions to particular prey signals (e.g., bright colours and noxious odours). These aversions may be flexible, that is, they can be reinforced or extinguished with experience. As such, we might expect populations to differ in their biases against certain prey characteristics (e.g., colour or pattern) depending on the prey available in the community...
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