Changeable cuttlefish camouflage is influenced by horizontal and vertical aspects of the visual background
نویسندگان
چکیده
منابع مشابه
Night vision by cuttlefish enables changeable camouflage.
Because visual predation occurs day and night, many predators must have good night vision. Prey therefore exhibit antipredator behaviours in very dim light. In the field, the giant Australian cuttlefish (Sepia apama) assumes camouflaged body patterns at night, each tailored to its immediate environment. However, the question of whether cuttlefish have the perceptual capability to change their c...
متن کاملMottle camouflage patterns in cuttlefish: quantitative characterization and visual background stimuli that evoke them.
Cuttlefish and other cephalopods achieve dynamic background matching with two general classes of body patterns: uniform (or uniformly stippled) patterns and mottle patterns. Both pattern types have been described chiefly by the size scale and contrast of their skin components. Mottle body patterns in cephalopods have been characterized previously as small-to-moderate-scale light and dark skin p...
متن کاملHow visual edge features influence cuttlefish camouflage patterning
Rapid adaptive camouflage is the primary defense of soft-bodied cuttlefish. Previous studies have shown that cuttlefish body patterns are strongly influenced by visual edges in the substrate. The aim of the present study was to examine how cuttlefish body patterning is differentially controlled by various aspects of edges, including contrast polarity, contrast strength, and the presence or abse...
متن کاملPerception of visual texture and the expression of disruptive camouflage by the cuttlefish, Sepia officinalis.
Juvenile cuttlefish (Sepia officinalis) camouflage themselves by changing their body pattern according to the background. This behaviour can be used to investigate visual perception in these molluscs and may also give insight into camouflage design. Edge detection is an important aspect of vision, and here we compare the body patterns that cuttlefish produced in response to checkerboard backgro...
متن کاملCuttlefish use visual cues to determine arm postures for camouflage.
To achieve effective visual camouflage, prey organisms must combine cryptic coloration with the appropriate posture and behaviour to render them difficult to be detected or recognized. Body patterning has been studied in various taxa, yet body postures and their implementation on different backgrounds have seldom been studied experimentally. Here, we provide the first experimental evidence that...
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ژورنال
عنوان ژورنال: Journal of Comparative Physiology A
سال: 2008
ISSN: 0340-7594,1432-1351
DOI: 10.1007/s00359-008-0320-8