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Camouflage in Cephalopods

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Stephanie Seale

on 15 November 2012

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Transcript of Camouflage in Cephalopods

Mechanisms of
Camouflage
in Cephalopods What is a Cephalopod? - Mollusk
-Cephalization
-Bilateral Symmetry
-Tentacles What Is
Camouflage? -Method of concealment
-Mimesis
-Crypsis
chromatic, textural, postural, locomotive
-Naturally selected for because of aid to survival Crypsis How? - neurally controlled chromatophore cells

- 3 different pigments of brown, yellow, orange, red, black

- Reflecting cells

- Visual sensitivity Visual Capacity - Eyes appear similar to vertebrates

- Light receptors have microvilli with visual pigment

- Each species limited to one visual pigment based on environment

- Colorblind Reactions based on Perception Texture -Based on visual clues as opposed to physical feel
-Can recognize dimension Adamo, Shelley A. "Signaling to the Enemy? Body Pattern Expression and its Response to External Cues During Hunting in the Cuttlefish Sepia Officinalis." The Biological Bulletin 210, no. 3 (June 2006).

Baker, Beth. "Unusual Adaptations." BioScience 11, no. 60 (December 2010).

Cobb, Allan B. "Camouflage." Animal Sciences, December 1, 2009. Accessed October 13, 2012. http://ic.galegroup.com/ic/scic/ReferenceDetailsPage/ReferenceDetailsWindow?failOverType=&query=&prodId=SCIC&windowstate=normal&contentModules=&mode=view&displayGroupName=Reference&limiter=&currPage=&disableHighlighting=false&source=&sortBy=&displayGroups=&search_within_results=&action=e&catId=&activityType=&scanId=&documentId=GALE%7CCV2642050042.

Cuthill, Innes C. "Disruptive Coloration and Background Pattern Matching." Nature 434, no. 7029 (March 3, 2005). Accessed November 14, 2012. .

Gumina, Justin. Cephalopod Crypsis: The Ultimate Vanishing ACt. Research report. Accessed November 13, 2012. http://www.academia.edu/265242/Cephalopod_camouflage_the_ultimate_vanishing_act.

James, Sumich L. An Introduction to the Biology of Marine Life. Edited by Kevin Kane. 5th ed. Dubuque, IA: Wm. C. Brown Publishers, 1992. Stephanie Seale Mimesis Postoral and Locomotive Camouflage Bibliography
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