Questions related to Sensory Ecology
Hi everyone. I'm a sensory ecologist and I'm starting to get interested in ultraviolet light (also polarized light). I understand that birds and some insets (e.g. moths and butterflies) can sexually advertise in ultraviolet wavelengths. Still, there are so many diverse taxa of animals that can see UV that it seems like there have to be some more diverse uses for it other than prey identification and sexual advertising. I'm looking to create a bit of library of things that are strong reflectors of UV light and I'd really appreciate any you can contribute as mentions or more detailed references. Thanks so much.
Anuran tadpoles respond to chemical cues of predation reducing foraging and swimming activity. In many cases this behavior is produced by a predation event releasing different kind of cues, in particular alarm cues, coming from tadpole itself, seem to play a key role in elicit antipredatory responses, even if they often need to be associated to kairomone (from predator) to have the whole response.
Exaptation is the co-option of a biological trait from it's original function into a new context. Sensory bias (biases inherent in a sensory system) evolve in order to convey an advantage to the individual carrying them, for example foods with a certain smell. If these sensory biases are co-opted into a new function (for example from food acquisition to predator avoidance) is this then an example of exaptation?
Colour photoreceptor cells are found as double, triple or even quadruple cones in the retina of some birds, fish, amphibians and reptiles. I would love to have a clearer idea as to the purpose/advantage that this may have.