Journal
EXPERIMENTAL GERONTOLOGY
Volume 41, Issue 1, Pages 93-97Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.exger.2005.09.014
Keywords
degenerative behavior; supine behavior; disablement; disabilityimpairment; behavioral gerontology; insect longevity; insect life span
Categories
Funding
- NIA NIH HHS [P01 AG008761-160003, P01-AG022500-01, P01-AG08761-10, P01 AG008761, P01 AG022500] Funding Source: Medline
- NATIONAL INSTITUTE ON AGING [P01AG008761, P01AG022500] Funding Source: NIH RePORTER
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Patterns of behavior were recorded every 10 min during a 2-h period each day from eclosion to death for individual Drosophila melanogaster (both sexes) and Ceratitis capitata (males-only) including walking, preening, feeding, flying, and resting for the former species, and walking, calling (signaling), supine (upside-down), and resting in the latter. Results reveal that, with the exception of preening in D. melanogaster, behavioral patterns are age-specific and the frequency of several behaviors (e.g. supine in medfly; walking and resting in D. melanogaster) are correlated with time-to-death. This is the first set of studies to report the age patterns over a range of behavioral categories throughout the lives of individuals and thus the first that systematically documents the behavior of individuals at advanced ages. We suggest that the new and unique behaviors (e.g. supine) that emerge from the aging process be referred to as degenerative behaviors, not only to distinguish them from the conventional behavioral classifications (innate, learned), but also to reflect their emergent nature.
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