Not all fish have otoliths, and for those that do, the specific characteristics of the otoliths depend on the species. The minimum quantity for routine AMS analysis is 300 micrograms of carbon after pretreatment, though the lab can work with less upon discussion.
The δ13C and δ18O measurements by isotope ratio mass spectrometry (IRMS) are included at no additional fee when submitting fish otolith samples for radiocarbon dating.
ISO 17025-accredited Beta Analytic reports radiocarbon dating results within 14 business days and fees include quality assurance reports, calendar calibration as applicable and access to both past results and pending analyses are available online 24/7.
Please For samples that do not require lab pretreatment, stable isotope analysis results are reported in 7 business days.
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applied to samples directly affect the final result.
Annuli formation is likened to tree ring growth, both are used for age estimations. Combining this data with comparisons on the size of the fish sheds light on how fast the species grows.
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In fish, otoliths are hard carbonate structures sitting behind the brain that are involved in hearing and balance.
There are three types of otoliths – the sagitta, asteriscus and lapillus.
For samples that do require lab pretreatment, results are reported in 14 business days.