Ultrasound as a non-invasive alternative for deuterium oxide dilution measurements in harbor seals (Phoca vitulina)

Autor:	Daniel R. Hennen, Jill Prewitt, Shawna A. Karpovich, Lori Polasek, Suzanne Conlon, Carrie Goertz
Rok vydání:	2015
Předmět:	Ecology biology business.industry Chemistry Ultrasound Anatomy biology.organism_classification Phoca Dilution Deuterium Blubber Genetics Lean body mass Harbor seal Animal Science and Zoology business Ecology Evolution Behavior and Systematics Body condition Nature and Landscape Conservation
Zdroj:	Journal of Mammalogy. 96:361-367
ISSN:	1545-1542 0022-2372
DOI:	10.1093/jmammal/gyv037
Popis:	Deuterium oxide dilutions have long been the accepted means for collecting body condition measures on phocids. Blubber depth has become more frequently used as an indicator of health. This project represents the first in-depth examination of blubber depth measured via ultrasound as an indicator of body condition in a single species. We concurrently measured blubber depth via imaging ultrasound at 8 locations, fat and protein mass via deuterium oxide dilutions, morphometrics, and mass from wild, captive, and rehabilitating harbor seals (Phoca vitulina; n = 89). Seals ranged from premature to adult. By using body mass and blubber depth measurements we are able to predict fat and lean mass in an independent set of 187 animals (adjusted R2 = 0.77 and 0.96, respectively). Although most of the ultrasound sites produced strong correlates to fat mass, an additive model incorporating body mass, 1 lateral site (L2), and 1 dorsal site (D4) provided the tightest fit.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::49228c5b5c6a83223c2d9fe886527d88 https://doi.org/10.1093/jmammal/gyv037 Zobrazit plný text záznamu