Age determination of minke whales (Balaenoptera acutorostrata) using the aspartic acid racemization technique

  title={Age determination of minke whales (Balaenoptera acutorostrata) using the aspartic acid racemization technique},
  author={Erik Olsen and Jan Sunde},
  pages={1 - 8}
Eyeballs were collected from 31 female minke whales caught in the North Sea, Norwegian Sea and Barents Sea. The eye-lens nucleus was dissected out and the relative amount of D- and L- enantiomers of aspartic acid measured using high-performance liquid chromatography (HPLC). A racemization reaction changes the D/L aspartic acid relationship in the nucleus over time. The age of each whale was estimated using the racemization rate for fin whales along with the measured D/L ratio. The minimum age… 
Age estimation of Antarctic minke whales Balaenoptera bonaerensis based on aspartic acid racemization technique
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The ages of three species of cetaceans were estimated by counting the growth layer groups (GLG) and measuring the aspartic acid racemization rate (kAsp) by what is referred to as the Aspartic Acid
Application of a novel method for age estimation of a baleen whale and a porpoise
Correlation between chosen age estimates from AAR and GLG counts indicated that AAR might be an alternative method for estimating age in marine mammals.
Estimating the Age of West Greenland Humpback Whales Through Aspartic Acid Racemization and Eye Lens Bomb Radiocarbon Methods
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Two techniques of age estimation in cetaceans: GLGs in teeth and earplugs, and measuring the AAR rate in eye lens nucleus
The ages of three species of cetaceans were estimated by counting the growth layer groups (GLG) and measuring the aspartic acid racemization rate ( k Asp ) by what is referred to as the Aspartic Acid


Age and growth estimates of bowhead whales (Balaena mysticetus) via aspartic acid racemization
A total of 48 eye globes were collected and analyzed to estimate ages of bowhead whales using the aspartic acid racemization technique, and growth appears faster for females than males, and age at sexual maturity occurs at around 25 years of age.
Postmortem body temperatures in the minke whale, Balaenoptera acutorostrata
Both intra- and inter-specific comparisons reveal that the thickness of the blubber layer is important for the maintenance of thermal gradients and, thereby, for heat conservation.
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“The Merck Index”
The Merck Index of Chemicals and Drugs is an encyclopedia for the Chemist, Pharmacist, Physician and Allied Professions and thumb-indexed, 8 dollars.
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Den norske vä gehvalfangsten
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