Journal
EXPERIMENTAL GERONTOLOGY
Volume 40, Issue 10, Pages 793-800Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.exger.2005.07.013
Keywords
biodemographic studies; mexfly; medfly
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Funding
- NIA NIH HHS [P01-AG022500-01, P01 AG008761-160003, P01 AG022500, P01-AG08761-10, P01 AG008761] Funding Source: Medline
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Age of sexual maturity, daily and lifetime reproductive rates, and life span were recorded in a laboratory cohort of Mexican fruit flies consisting of over 1100 females maintained individually. The results revealed that, relative to the medfly, the Mexfly is slower maturing (14 vs 17 days), more fecund (1400 vs 650-1100 eggs/female), and longer lived (50 vs 35 clays). The results reinforced the generality of several earlier findings on the medfly including the deceleration of mortality at older ages and the weakness of the correlation between the rate of egg laying at early ages and both subsequent reproduction and remaining longevity. Discussion includes perspectives on the role of artificial selection in shaping the demographic traits of the mass-reared strain of Mexfly used in this study, as well as the overall significance of large scale biodemographic studies in understanding aging and longevity. (c) 2005 Elsevier Inc, All rights reserved.
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