Austad S N
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138.
Exp Gerontol. 1989;24(1):83-92. doi: 10.1016/0531-5565(89)90037-5.
Longevity of free-living female adult bowl and doily spiders was compared with that of captive spiders fed at dietary regimes of one, three, and five Drosophila melanogaster per week. Adult females lived, on average, only 8 days in the field and the pattern of survivorship showed no evidence that senescence contributed to mortality. In the laboratory, mean adult life span was 81.3, 63.9, and 42.3 days on the one, three, and five Drosophila diets, respectively. Decreased feeding rate also delayed egg laying and reduced total fecundity. Survival and reproductive patterns indicated the manifestation of spider senescence at all laboratory feeding levels, with a younger onset of senescence at the higher feeding rates.
将自由生活的成年雌性碗蛛和盘蛛的寿命与每周分别喂食1只、3只和5只黑腹果蝇的圈养蜘蛛的寿命进行了比较。成年雌性在野外平均仅存活8天，存活模式没有显示衰老导致死亡的证据。在实验室中，在每周喂食1只、3只和5只果蝇的饮食条件下，成年蜘蛛的平均寿命分别为81.3天、63.9天和42.3天。喂食率降低也会延迟产卵并降低总繁殖力。生存和繁殖模式表明，在所有实验室喂食水平下蜘蛛都会出现衰老现象，且在较高喂食率下衰老开始得更早。
