Le Bourg Eric, Moreau Mathieu
Centre de Recherches sur la Cognition Animale, UMR CNRS 5169, Université Paul-Sabatier, 31062 Toulouse 9, France.
Centre de Recherches sur la Cognition Animale, UMR CNRS 5169, Université Paul-Sabatier, 31062 Toulouse 9, France.
Exp Gerontol. 2014 Jul;55:102-6. doi: 10.1016/j.exger.2014.04.001. Epub 2014 Apr 13.
Several authors have discussed the existence of late-life fecundity plateaus in Drosophila melanogaster. However, all these studies have pooled flies to show such plateaus. Here, we have reanalyzed previously published fecundity results to know whether these plateaus exist at the individual level. We found that these plateaus are observed in ca 20% of females and in more than 50% if only the longer-lived flies are taken into account. We conclude that late-life fecundity plateaus are not a rare phenomenon when considering a whole cohort of flies and are very common in oldest flies.
几位作者讨论了黑腹果蝇晚年生育力平台期的存在。然而，所有这些研究都是将果蝇集中起来以显示这种平台期。在这里，我们重新分析了先前发表的生育力结果，以了解这些平台期在个体水平上是否存在。我们发现，约20%的雌性果蝇出现了这些平台期，如果只考虑寿命较长的果蝇，这一比例超过50%。我们得出结论，考虑到整个果蝇群体时，晚年生育力平台期并非罕见现象，在最老的果蝇中非常普遍。
