Document Detail

Interactive effects of size, contrast, intensity and configuration of background objects in evoking disruptive camouflage in cuttlefish.
MedLine Citation:
PMID:  17592739     Owner:  NLM     Status:  MEDLINE    
Disruptive body coloration is a primary camouflage tactic of cuttlefish. Because rapid changeable coloration of cephalopods is guided visually, we can present different visual backgrounds (e.g., computer-generated, two-dimensional prints) and video record the animal's response by describing and grading its body pattern. We showed previously that strength of cuttlefish disruptive patterning depends on the size, contrast, and density of discrete light elements on a homogeneous dark background. Here we report five experiments on the interactions of these and other features. Results show that Weber contrast of light background elements is--in combination with element size--a powerful determinant of disruptive response strength. Furthermore, the strength of disruptive patterning decreases with increasing mean substrate intensity (with other factors held constant). Interestingly, when element size, Weber contrast and mean substrate intensity are kept constant, strength of disruptive patterning depends on the configuration of clusters of small light elements. This study highlights the interactions of multiple features of natural microhabitats that directly influence which camouflage pattern a cuttlefish will choose.
Chuan-Chin Chiao; Charles Chubb; Roger T Hanlon
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-06-25
Journal Detail:
Title:  Vision research     Volume:  47     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-07-30     Completed Date:  2007-09-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  2223-35     Citation Subset:  IM    
Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA 02543, USA.
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MeSH Terms
Adaptation, Physiological*
Color Perception / physiology
Computer Graphics
Contrast Sensitivity / physiology
Decapodiformes / physiology*
Pattern Recognition, Visual / physiology
Size Perception / physiology
Skin Pigmentation / physiology*
Video Recording
Visual Perception / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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