Age Determination of the Spider Crab Maja squinado and the European Lobster Homarus gammarus by 228 Th/ 228 Ra Chronology: Possible Extension to Other Crustaceans
International audience A method of age determination was developed on carapaces of the spider crab, Maja squinado Herbst and European lobster Homarus gammarus L., by measuring the natural radionuclides activity ratio, 228 Th/ 228 Ra in the exoskeleton. This method allows the determination of the tim...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Main Authors: | , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
1989
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Subjects: | |
Online Access: | https://hal.science/hal-03555142 https://doi.org/10.1139/f89-091 |
Summary: | International audience A method of age determination was developed on carapaces of the spider crab, Maja squinado Herbst and European lobster Homarus gammarus L., by measuring the natural radionuclides activity ratio, 228 Th/ 228 Ra in the exoskeleton. This method allows the determination of the time elapsed since the preceding molt of the animal. It was successfully tested on five spider crabs and four lobsters which had molted in captivity and therefore had a carapace of known age. It is probable that the method could, with some reservations, be extended to all marine Decapod Crustacea bearing a well calcified exoskeleton. |
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