Age estimation of the oyster Ostrea puelchana determined from the hinge internal growth pattern
| Autor: | Marina A. Kroeck, María del Socorro Doldan, M. de Rafélis, Marcela Susana Pascual, Enrique Morsan |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
CALCEIN CATHODOLUMINESCENCE STABLE ISOTOPE Oyster AGE ESTIMATION Ecology 010604 marine biology & hydrobiology Ostrea puelchana SCLEROCHRONOLOGY Biología Marina Limnología Aquatic Science Biology 010502 geochemistry & geophysics 01 natural sciences Ciencias Biológicas Oceanography Age estimation Sclerochronology biology.animal CIENCIAS NATURALES Y EXACTAS Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Marine Biology. 165 |
| ISSN: | 1432-1793 0025-3162 |
| DOI: | 10.1007/s00227-018-3375-2 |
| Popis: | A multiproxy approach was used to analyse the internal growth pattern of Ostrea puelchana shells. Field investigations using fluorochrome stains were performed to estimate the deposition time of the lines of irregular growth. Cathodoluminescence (CL) microscopy of the hinge area and isotopic composition analyses of shells were performed. The oxygen isotopic composition of the shells showed seasonal fluctuations across the hinge. The results of CL microscopy and stable isotopes provided the first age estimations for wild specimens of O. puelchana. The maximal age of analysed oysters was 4.5 years. Shell deposition occurred at temperatures above 11 °C approximately, suggesting growth slowdown and/or cessation in winter. Lines of irregular growth showed no consistent temporal pattern; these growth structures cannot be used as sclerochronological proxies of growth season or shell age. O. puelchana is sensitive to seasonal environmental changes, which cause changes in its carbonate structure, although the pattern is not consistent, as in other species. In this study, the age of O. puelchana specimens from San Matías Gulf, Patagonia, Argentina, was estimated, providing a basis for future studies on this species. Fil: Doldan, María del Socorro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue; Argentina Fil: de Rafélis, M.. Université Paul Sabatier; Francia Fil: Kroeck, Marina Andrea. Universidad Nacional del Comahue; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina Fil: Pascual, Marcela Susana. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Universidad Nacional del Comahue; Argentina Fil: Morsan, Enrique Mario. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina |
| Databáze: | OpenAIRE |
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