The researchers were able to estimate median growth rates and ages of sexual maturity in the collected specimens by comparing their radiocarbon measurements to those of other wild and captive hawksbill populations whose growth rates were known.This is the first time carbon-14 dating of shell tissue has been used to estimate age, growth, and maturity in sea turtles.Radiocarbon dating of atomic bomb fallout found in the shells of sea turtles is a reliable way to estimate the age, growth rate, and reproductive maturity of sea turtles in the wild, a new study shows.The technique provides more accurate estimates than methods currently being used and may shed new light on factors influencing the decline and lack of recovery of some endangered sea turtles populations, researchers say.Our bodies are prolific artists, creating new cells throughout the body.Some cells, like those found in skin, hair, and the lining of the gut, are produced and discarded on a regular basis, like doodles on scrap paper. Kirsty Spalding was one of the scientists who doubted that assessment.“The most basic questions of sea turtle life history are also the most elusive,” says Kyle Van Houtan, adjunct associate professor at Duke University’s Nicholas School of the Environment and a fisheries research ecologist at the National Oceanic and Atmospheric Association’s Pacific Islands Fisheries Science Center.As reported in the journal , researchers analyzed hard tissue from the shells of 36 deceased hawksbill sea turtles collected since the 1950s.
Implicit in the Conventional Radiocarbon Age BP is the fact that it is not adjusted for this correction.
The bomb pulse has been declining since the 1963 above-ground test ban treaty, creating a sort of clock they could exploit.
By determining how many radioactive carbon atoms a cell contained, Spalding and Frisén hoped they could calculate its birthdate. Spalding’s curiosity eventually leading her to a slaughterhouse on the outskirts of Stockholm.
, is one of the most important processes involved in assessment of its stock biomass.
Recently, the ages of PBF have been estimated by analyzing otolith thin sections.