Cathodoluminescence Microscopy: A Useful Tool for Assessing Incremental Chemical Variation in Otoliths

Autor:	John A. Babaluk, Karen Mathers, Norman M. Halden, Sergio R. Mejia
Rok vydání:	2004
Předmět:	Strontium Trace element Mineralogy chemistry.chemical_element Cathodoluminescence Zinc Manganese Aquatic Science medicine.anatomical_structure chemistry Microscopy medicine sense organs Luminescence Ecology Evolution Behavior and Systematics Otolith
Zdroj:	Environmental Biology of Fishes. 71:53-61
ISSN:	1573-5133 0378-1909
DOI:	10.1023/b:ebfi.0000043157.14585.98
Popis:	Otoliths taken from fish from Eden Lake, Manitoba show yellow–green and red cathodoluminescence of varying intensity that corresponds to their annular structure. Proton-induced X-ray emission analysis shows manganese (Mn) concentrations of between 2 and 205 ppm, zinc (Zn) concentrations between 2 and 290 ppm and strontium (Sr) concentrations up to 1 500 ppm in the otoliths. The distribution of luminescence correlates with the distribution of Mn. The Mn, Zn and Sr are likely derived from the monzonitic rocks surrounding the lake. Variations in the distribution of cathodoluminescence may be a useful tool for evaluating changes in environmental chemistry and fish life histories.
Databáze:	OpenAIRE
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