Carey James R, Liedo Pablo, Müller Hans-Georg, Wang Jane-Ling, Senturk Damla, Harshman Lawrence
Department of Entomology, University of California, One Shields Avenue, Davis, CA 95616, USA.
Exp Gerontol. 2005 Oct;40(10):793-800. doi: 10.1016/j.exger.2005.07.013. Epub 2005 Sep 8.
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 days). 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.
在一个实验室群体中记录了墨西哥果蝇的性成熟年龄、每日和终生繁殖率以及寿命，该群体由1100多只单独饲养的雌性果蝇组成。结果显示，相对于地中海实蝇，墨西哥果蝇成熟较慢（14天对17天）、繁殖力更强（1400枚卵/雌对650 - 1100枚卵/雌）且寿命更长（50天对35天）。这些结果强化了之前关于地中海实蝇的几个普遍发现，包括老年死亡率的减速以及早期产卵率与后续繁殖和剩余寿命之间相关性较弱。讨论内容包括人工选择在塑造本研究中使用的大规模饲养的墨西哥果蝇品系的人口统计学特征方面的作用，以及大规模生物人口学研究在理解衰老和长寿方面的总体意义。
