Browsing by Author "Johnsen, Sönke"
Now showing items 1-6 of 6
-
Freezing behaviour facilitates bioelectric crypsis in cuttlefish faced with predation risk.
(Proc Biol Sci, 2015-12-07)Cephalopods, and in particular the cuttlefish Sepia officinalis, are common models for studies of camouflage and predator avoidance behaviour. Preventing detection by predators is especially important to this group of animals, ... -
Influence of visual background on discrimination of signal-relevant colours in zebra finches (Taeniopygia guttata).
(Proceedings. Biological sciences, 2022-06)Colour signals of many animals are surrounded by a high-contrast achromatic background, but little is known about the possible function of this arrangement. For both humans and non-human animals, the background colour surrounding ... -
Spectral sensitivity, spatial resolution and temporal resolution and their implications for conspecific signalling in cleaner shrimp.
(J Exp Biol, 2016-02)Cleaner shrimp (Decapoda) regularly interact with conspecifics and client reef fish, both of which appear colourful and finely patterned to human observers. However, whether cleaner shrimp can perceive the colour patterns ... -
Visual acuity in ray-finned fishes correlates with eye size and habitat.
(J Exp Biol, 2017-05-01)Visual acuity (the ability to resolve spatial detail) is highly variable across fishes. However, little is known about the evolutionary pressures underlying this variation. We reviewed published literature to create an acuity ... -
Von Uexküll Revisited: Addressing Human Biases in the Study of Animal Perception.
(Integrative and comparative biology, 2019-12)More than 100 years ago, the biologist Jakob von Uexküll suggested that, because sensory systems are diverse, animals likely inhabit different sensory worlds (umwelten) than we do. Since von Uexküll, work across sensory ...
