Experience with Aposematic Defense Triggers Attack Bias in a Mantid Predator ().

Studies of predator psychology in aposematism have suggested important effects of signal detection through space and time on outcomes of attack behavior. Both the integration of aposematic signals from prey and experience state of the predator can have important effects on attack decisions. The universality of these effects however, especially as it applies to non-avian predators such as arthropods, remains poorly understood.

Dynamic light filtering over dermal opsin as a sensory feedback system in fish color change.

Dynamic color change has evolved multiple times, with a physiological basis that has been repeatedly linked to dermal photoreception via the study of excised skin preparations. Despite the widespread prevalence of dermal photoreception, both its physiology and its function in regulating color change remain poorly understood. By examining the morphology, physiology, and optics of dermal photoreception in hogfish (Lachnolaimus maximus), we describe a cellular mechanism in which chromatophore pigment activity (i.

Light and Color in Nature 2020: introduction to the feature issue.

This feature issue on Light and Color in Nature focuses on the interplay of light with the landscape and other naked-eye phenomena and describes a wide range of natural optical phenomena that can be seen in our natural environment. Results are reported on the experimental and theoretical investigations undertaken to improve understanding of these phenomena.

Mueller matrix characterizations of circularly polarized reflections from golden scarab beetles.

Circularly polarized light (CPL) reflections are rare in nature. Only a few animal groups-most notably certain stomatopod crustaceans and certain beetles in the family Scarabaeidae-are known to reflect CPL from incident unpolarized light. Here, we examine five species of metallic scarabs in the genus Chrysina that, to the naked human eye, look remarkably similar.

Not As Clear As It May Appear: Challenges Associated with Transparent Camouflage in the Ocean.

The "superpower" of invisibility is a reality and a necessity for many animals that live in featureless environments like the open ocean, where there is nowhere to hide. How do animals achieve invisibility? Many animals match their color patterns to their background, but this strategy is limited when the background scene is dynamic. Transparency allows organisms to match any background all the time.