scholarly journals Morbidity and mortality in stranded Cook Inlet beluga whales Delphinapterus leucas

2015 ◽  
Vol 114 (1) ◽  
pp. 45-60 ◽  
Author(s):  
KA Burek-Huntington ◽  
JL Dushane ◽  
CEC Goertz ◽  
LN Measures ◽  
CH Romero ◽  
...  
Keyword(s):  
Morbidity And Mortality ◽  
Delphinapterus Leucas ◽  
Cook Inlet ◽  
Beluga Whales

Potential natural and anthropogenic impediments to the conservation and recovery of Cook Inlet beluga whales, Delphinapterus leucas

2016 ◽  
Vol 77 (2) ◽  
pp. 89-105 ◽  
Author(s):  
Stephanie A. Norman ◽  
Roderick C. Hobbs ◽  
Caroline E. C. Goertz ◽  
Kathy A. Burek-Huntington ◽  
Kim E. W. Shelden ◽  
...  
Keyword(s):  
Delphinapterus Leucas ◽  
Cook Inlet ◽  
Beluga Whales

Socio-sexual and probable mating behavior of Cook Inlet beluga whales, Delphinapterus leucas, observed from an aircraft

2016 ◽  
Vol 77 (2) ◽  
pp. 32-39 ◽  
Author(s):  
Kate S. Lomac-MacNair ◽  
Mari A. Smultea ◽  
Mark P. Cotter ◽  
Carey Thissen ◽  
Lisa Parker
Keyword(s):  
Mating Behavior ◽  
Delphinapterus Leucas ◽  
Cook Inlet ◽  
Beluga Whales

Estimated abundance and trend in aerial counts of beluga whales, Delphinapterus leucas, in Cook Inlet, Alaska, 1994-2012

2015 ◽  
Vol 77 (1) ◽  
pp. 11-31 ◽  
Author(s):  
Roderick C. Hobbs ◽  
David J. Rugh ◽  
Christy L Sims ◽  
Janice M. Waite ◽  
Kim E. W. Shelden
Keyword(s):  
Delphinapterus Leucas ◽  
Cook Inlet ◽  
Beluga Whales

scholarly journals An epigenetic clock to estimate the age of living beluga whales

2020 ◽  
Author(s):  
Eleanor K. Bors ◽  
C. Scott Baker ◽  
Paul R. Wade ◽  
Kaimyn O’Neill ◽  
Kim E.W. Shelden ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Penalized Regression ◽  
Training Data ◽  
Delphinapterus Leucas ◽  
Epigenetic Clock ◽  
Calibration Data ◽  
Cook Inlet ◽  
Data Set ◽  
Beluga Whales ◽  
Skin Samples

ABSTRACTIntroductionDNA methylation data facilitate the development of accurate molecular estimators of chronological age, or ‘epigenetic clocks.’ We present a robust epigenetic clock for the beluga whale, Delphinapterus leucas, developed for an endangered population in Cook Inlet, Alaska, USA.Methods and ResultsWe used a custom methylation array to measure methylation levels at 37,491 cytosine-guanine sites (CpGs) from skin samples of dead whales (n = 67) whose chronological ages were estimated based on tooth growth layer groups. Using these calibration data, a penalized regression model selected 23 CpGs, providing an R2 = 0.92 for the training data; and an R2 = 0.74 and median absolute age error = 2.9 years for the leave one out cross-validation. We applied the epigenetic clock to an independent data set of 38 skin samples collected with a biopsy dart from living whales between 2016 and 2018. Age estimates ranged from 11 to 27 years. We also report sex correlations in CpG data and describe an approach of identifying the sex of an animal using DNA methylation.DiscussionThe epigenetic estimators of age and sex presented here have broad applications for conservation and management of Cook Inlet beluga whales and potentially other cetaceans.

Acoustic monitoring of beluga whales (Delphinapterus leucas) in Cook Inlet, Alaska

2011 ◽  
Vol 130 (4) ◽  
pp. 2459-2459
Author(s):  
Manuel Castellote ◽  
Robert J. Small ◽  
Shannon Atkinson ◽  
Marc O. Lammers ◽  
Justin jenniges ◽  
...  
Keyword(s):  
Acoustic Monitoring ◽  
Delphinapterus Leucas ◽  
Cook Inlet ◽  
Beluga Whales
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