Bomb Radiocarbon Age Validation of Warsaw Grouper and Snowy Grouper

Fisheries ◽  
2019 ◽  
Vol 44 (11) ◽  
pp. 524-533 ◽  
Author(s):  
Phillip J. Sanchez ◽  
Jeffrey P. Pinsky ◽  
Jay R. Rooker
Keyword(s):  
Age Validation ◽  
Radiocarbon Age ◽  
Bomb Radiocarbon

Growth and sexual maturity of the northern propellerclam (Cyrtodaria siliqua) in Eastern Canada, with bomb radiocarbon age validation

2009 ◽  
Vol 156 (5) ◽  
pp. 1029-1037 ◽  
Author(s):  
Raouf W. Kilada ◽  
Steven E. Campana ◽  
Dale Roddick
Keyword(s):  
Sexual Maturity ◽  
Age Validation ◽  
Eastern Canada ◽  
Radiocarbon Age ◽  
Bomb Radiocarbon

scholarly journals Bomb radiocarbon age validation for the long-lived, unexploited Arctic fish species Coregonus clupeaformis

2019 ◽  
Vol 70 (12) ◽  
pp. 1781 ◽  
Author(s):  
John M. Casselman ◽  
Cynthia M. Jones ◽  
Steven E. Campana
Keyword(s):  
The Arctic ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Age Validation ◽  
Arctic Lake ◽  
Radiocarbon Age ◽  
Bomb Radiocarbon ◽  
Arctic Fish ◽  
Lake Simcoe ◽  
Ageing Methods

The growth rates of freshwater fish in the Arctic would be expected to be very low, but some previous studies of lake whitefish (Coregonus clupeaformis) have reported relatively rapid growth and longevity estimates of less than 15 years. We used bomb radiocarbon chronologies to validate an ageing method based on otolith sections for lake whitefish in both an unexploited Arctic lake (MacAlpine Lake; longevity 50 years) and a lightly exploited temperate population (Lake Simcoe; longevity 49 years). Our results confirm previous suggestions that other ageing methods can seriously underestimate lake whitefish age after ~5–8 years. A Chapman–Robson estimate of instantaneous natural mortality rate (M) of 0.12 in the unfished Arctic lake was one-quarter of that measured in other Arctic lake whitefish populations, and one-third of that predicted by Pauly’s (1980) growth–temperature equation. The high estimates of M reported in other whitefish studies and by Pauly’s equation are almost certainly due to their being based on (incorrect) scale or surface otolith ages. Radiocarbon dating confirms that any attempt at predicting sustainable production for long-lived freshwater fishes like lake whitefish will need to be based on accurate ages derived from otolith sections.

Bomb radiocarbon age validation of Pacific ocean perch (Sebastes alutus) using new statistical methods

2008 ◽  
Vol 65 (6) ◽  
pp. 1101-1112 ◽  
Author(s):  
Craig R. Kastelle ◽  
Daniel K. Kimura ◽  
Betty J. Goetz
Keyword(s):  
Pacific Ocean ◽  
Statistical Methods ◽  
Validation Sample ◽  
Age Validation ◽  
Science Center ◽  
Radiocarbon Age ◽  
Fisheries Science ◽  
New Methods ◽  
Bomb Radiocarbon ◽  
Squared Residuals

We used bomb-produced radiocarbon (14C) to validate ages of Pacific ocean perch ( Sebastes alutus ), which are routinely estimated with the cut-and-burn method at the Alaska Fisheries Science Center (Seattle, Washington, USA). New statistical methods to compare Δ14C in validation samples with a reference chronology are introduced: (i) calculating confidence intervals around the LOESS-smoothed Δ14C reference chronology using simultaneous inference; (ii) purposely adding biases to the validation sample ages and then analyzing the sum of squared residuals of the validation samples’ Δ14C about the LOESS-smoothed reference chronology; and (iii) standardizing the Δ14C measurements from the validation sample to better fit the reference chronology. Standardized Δ14C measurements are particularly useful when researchers suspect that environmental and biological differences between the validation samples and the reference chronology may exist that affect the level, but not the timing, of Δ14C in the samples. These new methods can be applied simultaneously. Two previous bomb radiocarbon studies on canary rockfish ( Sebastes pinniger ) and black drum ( Pogonias cromis ) were reanalyzed, further illustrating the usefulness of these new methods.

scholarly journals Bomb dating, age validation and quality control of age determinations of monodontids and other marine mammals

2014 ◽  
Vol 8 ◽  
Author(s):  
Steven E Campana ◽  
Robert EA Stewart
Keyword(s):  
Quality Control ◽  
Marine Mammals ◽  
Age Determination ◽  
Age Validation ◽  
Age Bias ◽  
Bomb Radiocarbon ◽  
Control Protocols ◽  
The 1960S ◽  
Age Determinations

Methods for confirming the accuracy of age determination methods are reasonably well established in fishes, but the millions of routine age determinations which take place every year require their own quality control protocols. In contrast, methods for ensuring accuracy in age determination of monodontids and other marine mammals are still being developed. Here we review the basis and application of bomb radiocarbon to marine mammal age validation, highlighting its value for providing unambiguous estimates of age for belugas and other long-lived animals which form growth bands. Bomb radiocarbon is particularly useful for marine mammals, given that the age of an individual animal can be determined to within ±1-3 years, as long as it was alive during the 1960s. However, ongoing age determinations require careful monitoring to ensure that age interpretations remain consistent across ages and through time. Quality control protocols using reference collections of ageing material, in conjunction with age bias plots and measures of precision, are capable of detecting virtually all of the systematic ageing errors that often occur once age determinations of an animal become routine.

Another New Zealand centenarian: age validation of black cardinalfish (Epigonus telescopus) using lead–radium and bomb radiocarbon dating

2017 ◽  
Vol 68 (2) ◽  
pp. 352 ◽  
Author(s):  
Dianne M. Tracey ◽  
Allen H. Andrews ◽  
Peter L. Horn ◽  
Helen L. Neil
Keyword(s):  
New Zealand ◽  
Growth Zone ◽  
Commercial Fishing ◽  
Age Validation ◽  
Fishing Activity ◽  
Combined Application ◽  
Bomb Radiocarbon ◽  
Otolith Core ◽  
Radiometric Ages ◽  
Lead 210

Black cardinalfish (Epigonus telescopus, Apogonidae) is an important component of deepsea commercial fishing activity in the New Zealand region. It is estimated to live longer than 100 years on the basis of counts of unvalidated annual growth zones in otoliths. Age-validation procedures for long-lived fishes are often one of the following two techniques: (1) lead–radium disequilibria, which uses the natural decay of radium-226 into lead-210 as a natural clock; or (2) bomb radiocarbon (Δ14C) dating, which relies on the marine signal created by nuclear testing. The high estimated lifespan, as well as the large size of the otolith core region, make E. telescopus an excellent candidate for a combined application of these two independent age-validation techniques. The lead–radium dating using otolith cores indicated that growth-zone counts less than ~60 years were consistent with radiometric ages, whereas higher counts appeared to be under-estimates. There was 95% confidence that maximum age was at least 95 years. The validation indicated that fish aged over 60 years tended to be under-aged by up to 30%. The bomb radiocarbon levels in otolith cores supported age estimates up to ~40 years made from zone counts, and by inference from the zone counts validated with lead–radium dating, longevity exceeds 100 years.

Bomb radiocarbon chronologies in the Arctic, with implications for the age validation of lake trout (Salvelinus namaycush) and other Arctic species

2008 ◽  
Vol 65 (4) ◽  
pp. 733-743 ◽  
Author(s):  
Steven E Campana ◽  
John M Casselman ◽  
Cynthia M Jones
Keyword(s):  
Lake Trout ◽  
Salvelinus Namaycush ◽  
Abrupt Onset ◽  
Arctic Lakes ◽  
The Arctic ◽  
Oceanic Circulation ◽  
Age Validation ◽  
Interpretation Criteria ◽  
Bomb Radiocarbon ◽  
Radiocarbon Chronology

Radiocarbon generated by atmospheric testing of nuclear weapons (bomb radiocarbon) produced a strong signal with an abrupt onset in the 1950s, which serves as a dated marker for tracing oceanic circulation and confirming age in animals forming growth bands. Here, we report the first prebomb and postbomb radiocarbon chronologies for marine and freshwater environments in the Canadian Arctic, extend the radiocarbon chronology for the northwest Atlantic Ocean, and use the onset of the bomb signal to validate our age interpretations of lake trout (Salvelinus namaycush) in Arctic lakes. Both surface and deepwater Arctic chronologies became detectable on or around 1958, similar to the year of onset elsewhere in the world. In contrast, the freshwater Arctic chronology increased sharply in 1957, with a peak value sixfold higher than the adjacent marine environment. The radiocarbon content of the adult otolith core validated our age interpretation criteria for Arctic lake trout to an age of at least 50 years. Otolith growth in such slow-growing fish was so low as to be unresolvable under conventional examination with a dissecting microscope. With these new radiocarbon reference chronologies, age validation of a large number of Arctic organisms should now be possible.

Application of bomb radiocarbon chronologies to shortfin mako (Isurus oxyrinchus) age validation

2007 ◽  
pp. 355-366 ◽  
Author(s):  
Daniele Ardizzone ◽  
Gregor M. Cailliet ◽  
Lisa J. Natanson ◽  
Allen H. Andrews ◽  
Lisa A. Kerr ◽  
...  
Keyword(s):  
Age Validation ◽  
Isurus Oxyrinchus ◽  
Shortfin Mako ◽  
Bomb Radiocarbon

Application of bomb radiocarbon chronologies to shortfin mako (Isurus oxyrinchus) age validation

2006 ◽  
Vol 77 (3-4) ◽  
pp. 355-366 ◽  
Author(s):  
Daniele Ardizzone ◽  
Gregor M. Cailliet ◽  
Lisa J. Natanson ◽  
Allen H. Andrews ◽  
Lisa A. Kerr ◽  
...  
Keyword(s):  
Age Validation ◽  
Isurus Oxyrinchus ◽  
Shortfin Mako ◽  
Bomb Radiocarbon

A Robust Deterministic Model Describing the Bomb Radiocarbon Signal for Use in Fish Age Validation

2008 ◽  
Vol 137 (3) ◽  
pp. 852-859 ◽  
Author(s):  
Owen S. Hamel ◽  
Kevin R. Piner ◽  
John R. Wallace
Keyword(s):  
Deterministic Model ◽  
Age Validation ◽  
Bomb Radiocarbon

scholarly journals Age validation of the North Atlantic stock of wreckfish (Polyprion americanus), based on bomb radiocarbon (14C), and new estimates of life history parameters

2015 ◽  
Vol 114 (1) ◽  
pp. 77-88
Author(s):  
Adam R. Lytton ◽  
Joseph C. Ballenger ◽  
Marcel J. M. Reichert ◽  
Tracey I. Smart
Keyword(s):  
Life History ◽  
North Atlantic ◽  
Age Validation ◽  
Life History Parameters ◽  
The North ◽  
Bomb Radiocarbon ◽  
The North Atlantic ◽  
Polyprion Americanus
Sign in / Sign up

Export Citation Format

Share Document