Journal
COMPTES RENDUS BIOLOGIES
Volume 328, Issue 3, Pages 243-252Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crvi.2005.01.003
Keywords
amomalous otolith; calcite; Sciaenidae; Cilus gilberti; Sciaena deliciosa; Chile; Peru
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Anomalous otoliths were discovered among modern and archaeological (8th millennium BP) sciaenids. The two species concerned, Cilus gilberti and Sciaena deliciosa, are common on the Peruvian-Chilean coast and do not seem to be affected by this morphological anomaly that maintained in their populations for thousands of years. The carbonates of the anomalous forms, determined by X-ray diffraction, are different from that of the normal otoliths, i.e. calcite and vaterite instead of aragonite. A method of non-destructive analysis by cathodoluminescence is tested and assumptions on the origin of the anomaly and its possible implications on environmental studies are advanced. (c) 2005 Academie des sciences. Published by Elsevier SAS. All rights reserved.
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