Data from: Ageing gracefully: physiology but not behaviour changes with age in a diving seabird ...
A higher proportion of long-lived animals die from senescence than short-lived animals, yet many long-lived homeotherms show few signs of physiological aging in the wild. This may, however, differ in long-lived diving homeotherms that frequently encounter hypoxic conditions and have very high metabo...
| Main Authors: | , , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2015
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.j7737 https://datadryad.org/stash/dataset/doi:10.5061/dryad.j7737 |
| Summary: | A higher proportion of long-lived animals die from senescence than short-lived animals, yet many long-lived homeotherms show few signs of physiological aging in the wild. This may, however, differ in long-lived diving homeotherms that frequently encounter hypoxic conditions and have very high metabolic rates. To examine aging within a long-lived diving homeotherm, we studied resting metabolism and thyroid hormones (N = 43), blood oxygen stores (N = 93), and foraging behaviour (N = 230) of thick-billed murres (Uria lomvia). Because murres dive exceptionally deep for their size and have a very high metabolism, we expected that aging murres would show signs of physiological senescence. We paid particular attention to resting metabolism as we argue that these maintenance costs reflect those experienced during deep dives. Blood oxygen stores (hematocrit), resting metabolic rate and thyroid hormone levels all declined significantly with age in incubating murres 3-30 years of age. In birds measured longitudinally ... : Time-depth recorders attached to chick-rearing murres in 2004Raw text files generated by Lotek download software. After a preamble including the logger serial number (8XXX), the data file presents three columns: the time & date, the temperature in degrees Celsius and the pressure in psi. To convert psi into approximate depth, multiply by 0.705. The text files are organized into three folders representing the three deployments. Each file name also has the last five digits of the band number of the individual bird to whom the TDR was attached (the total band number is 996XXXXX, where XXXXX is the unique identifier of the bird and included in the title of the file). The band number serves as the identifier to relate it to the meta-data file that includes sex, age and other attributes of the bird.2004 Chick-rearing.zipTime-depth recorders attached to chick-rearing murres in 2006Raw text files generated by Lotek download software. After a preamble including the logger serial number, the data file presents ... |
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