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Predicting the rate of oxygen consumption from heart rate in barnacle geeseBranta leucopsis: effects of captivity and annual changes in body condition
- Source :
- Journal of Experimental Biology. 212:2941-2948
- Publication Year :
- 2009
- Publisher :
- The Company of Biologists, 2009.
-
Abstract
- SUMMARY Quantifying a relationship between heart rate ( f H ) and rate of oxygen consumption ( V O 2 ) allows the estimation of V O 2 from f H recordings in free-ranging birds. It has been proposed that this relationship may vary throughout an animal9s annual cycle, due to changes in physiological status. Barnacle geese, Branta leucopsis , provide an ideal model to test this hypothesis, as they exhibit significant intra-annual variability in body mass, body composition and abdominal temperature, even in captivity. Heart rate data loggers were implanted in 14 captive barnacle geese, and at six points in the year the relationship between f H and V O 2 was determined. The f H / V O 2 relationship was also determined in seven moulting wild barnacle geese to examine whether relationships from captive animals might be applicable to wild animals. In captive barnacle geese, the f H / V O 2 relationship was significantly different only between two out of the six periods when the relationship was determined (late September–early October and November). Accounting for changes in physiological parameters such as body mass, body composition and abdominal temperature did not eliminate this difference. The relationship between f H and V O 2 obtained from wild geese was significantly different from all of the relationships derived from the captive geese, suggesting that it is not possible to apply calibrations from captive birds to wild geese. However, the similarity of the f H and V O 2 relationship derived during moult in the captive geese to those during the remainder of the annual cycle implies it is not unreasonable to assume that the relationship between f H / V O 2 during moult in the wild geese is indicative of the relationship throughout the remainder of the annual cycle.
- Subjects :
- Branta leucopsis
Physiology
Zoology
Captivity
Molting
Motor Activity
Aquatic Science
Barnacle
Oxygen Consumption
Heart Rate
Geese
Heart rate
Animals
Molecular Biology
Ecology, Evolution, Behavior and Systematics
biology
Ecology
biology.organism_classification
Annual cycle
Spirometry
Flight, Animal
Insect Science
Body Composition
Animal Science and Zoology
Seasons
Energy Metabolism
Moulting
Body condition
Subjects
Details
- ISSN :
- 14779145 and 00220949
- Volume :
- 212
- Database :
- OpenAIRE
- Journal :
- Journal of Experimental Biology
- Accession number :
- edsair.doi.dedup.....889f01c075e4a73bb829743df29ba87c