Refined bomb radiocarbon dating of two iconic fishes of the Great Barrier Reef

Andrews, Allen H., Choat, John H., Hamilton, Richard J., and DeMartini, Edward E. (2015) Refined bomb radiocarbon dating of two iconic fishes of the Great Barrier Reef. Marine and Freshwater Research, 66 (4). pp. 305-316.

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Abstract

Refinements to the methodology of bomb radiocarbon dating made it possible to validate age estimates of the humphead wrasse (Cheilinus undulatus) and bumphead parrotfish (Bolbometopon muricatum). Age for these species has been estimated from presumed annual growth zones in otoliths at similar to 30 and similar to 40 years respectively. The validity of these estimates was tested using bomb radiocarbon dating on the small and fragile otoliths of these species, and provided an opportunity to refine the method using advanced technologies. A regional C-14 reference record from hermatypic coral cores from the Great Barrier Reef was assembled and C-14 measurements from extracted otolith cores of adult otoliths were successful. Validated ages supported the accuracy of growth zone derived ages using sectioned sagittal otoliths.

Item ID: 41781
Item Type: Article (Research - C1)
ISSN: 1448-6059
Keywords: Australia, Bolbometopon muricatum, bumphead parrotfish, carbon-14, Cheilinus undulatus, humphead wrasse, Labridae, micromilling, otolith
Funders: National Geographic, Australian Research Council (ARC), James Cook University
Date Deposited: 08 Dec 2015 18:26
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 0%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060301 Animal Systematics and Taxonomy @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%
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