NDLI: Validated age estimates for large white sharks of the northeastern Pacific Ocean: altered perceptions of vertebral growth shed light on complicated bomb Δ14C results

Content Provider	Springer Nature Link
Author	Andrews, Allen H. Kerr, Lisa A.
Copyright Year	2014
Abstract	Age validation studies of large shark species using bomb radiocarbon (14C) dating have revealed that the growth of vertebrae can cease in adults. In a previous study of white sharks (Carcharodon carcharias) of the northeastern Pacific Ocean the latest growth material (leading edge of the corpus calcareum) was assigned a known date-of-formation assumed to coincide with the individual’s date of capture. This perspective prevented the assignment of older years of formation (a shift in age) to this material, leading to complicated results and no validated age estimates. A reanalysis of the bomb 14C data, in light of the recent findings for other species, has led to a validated lifespan estimate exceeding 30 years for white sharks of the northeastern Pacific Ocean.
Starting Page	971
Ending Page	978
Page Count	8
File Format	PDF
ISSN	03781909
Journal	Environmental Biology of Fishes
Volume Number	98
Issue Number	3
e-ISSN	15735133
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-08-08
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bomb radiocarbon dating Longevity Age and growth Vertebrae Validation Carcharodon carcharias Lamniformes Elasmobranch Freshwater & Marine Ecology Zoology Animal Systematics/Taxonomy/Biogeography Environment Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics

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