Document Detail

The packaging problem: bivalve prey selection and prey entry techniques of the octopus Enteroctopus dofleini.
MedLine Citation:
PMID:  17696656     Owner:  NLM     Status:  MEDLINE    
Many predators face a complex step of prey preparation before consumption. Octopuses faced with bivalve prey use several techniques to penetrate the shells to gain access to the meat inside. When given prey of mussels Mytilus trossulus, Manila clams Venerupis philippinarum, and littleneck clams Protothaca staminea, Enteroctopus dofleini solved the problem differently. They pulled apart V. philippinarum and M. trossulus, which had the thinnest shells and the least pulling resistance. P. staminea were eaten after the shells had been chipped or had been penetrated by drilling, presumably to inject a toxin. Likely because of these differences, octopuses consumed more V. philippinarum and M. trossulus than P. staminea when the mollusks were given to them either 1 species at a time or all together. However, when the shells were separated and the penetration problem removed, the octopuses predominantly chose P. staminea and nearly ignored M. trossulus. When V. philippinarum were wired shut, octopuses switched techniques. These results emphasize that octopuses can learn on the basis of nonvisual information and monitor their body position to carry out feeding actions.
Roland C Anderson; Jennifer A Mather
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of comparative psychology (Washington, D.C. : 1983)     Volume:  121     ISSN:  0735-7036     ISO Abbreviation:  J Comp Psychol     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-16     Completed Date:  2007-11-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8309850     Medline TA:  J Comp Psychol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  300-5     Citation Subset:  IM    
Life Sciences Department, Seattle Aquarium, Seattle, WA 98101, USA.
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MeSH Terms
Choice Behavior
Feeding Behavior
Octopodiformes / physiology*
Predatory Behavior*

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

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