Document Detail

Adaptive shell color plasticity during the early ontogeny of an intertidal keystone snail.
MedLine Citation:
PMID:  19805296     Owner:  NLM     Status:  MEDLINE    
We report a mechanism of crypsis present during the vulnerable early post-metamorphic ontogeny (</=20 mm peristomal length) of the muricid snail Concholepas concholepas, a rocky shore keystone predator characteristic of the southeastern Pacific coast. In the field, we found a significant occurrence (>95%) of specimens bearing patterns of shell coloration (dark or light colored) that matched the background coloration provided by patches of Concholepas' most abundant prey (mussels or barnacles respectively). The variation in shell color was positively associated with the color of the most common prey (r = 0.99). In laboratory experiments, shell coloration of C. concholepas depended on the prey-substrate used to induce metamorphosis and for the post-metamorphic rearing. The snail shell color matched the color of the prey offered during rearing. Laboratory manipulation experiments, switching the prey during rearing, showed a corresponding change in snail shell color along the outermost shell edge. As individuals grew and became increasingly indistinguishable from the surrounding background, cryptic individuals had higher survival (71%) than the non cryptic ones (4%) when they were reared in the presence of the predatory crab Acanthocyclus hassleri. These results suggest that the evolution of shell color plasticity during the early ontogeny of C. concholepas, depends on the color of the more abundant of the consumed prey available in the natural habitat where settlement has taken place; this in turn has important consequences for their fitness and survivorship in the presence of visual predators.
Patricio H Manríquez; Nelson A Lagos; María Elisa Jara; Juan Carlos Castilla
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-09-02
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  106     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-10-06     Completed Date:  2009-11-06     Revised Date:  2013-05-31    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  16298-303     Citation Subset:  IM    
Instituto de Biología Marina "Dr. Jürgen Winter," Laboratorio Costero de Recursos Acuáticos de Calfuco, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile.
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MeSH Terms
Adaptation, Physiological / physiology*
Bivalvia / physiology
Color Perception / physiology
Logistic Models
Metamorphosis, Biological
Pigmentation / physiology*
Predatory Behavior / physiology
Snails / anatomy & histology,  growth & development,  physiology*
Erratum In:
Proc Natl Acad Sci U S A. 2009 Oct 27;106(43):18427

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

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