Parental age does not influence offspring telomeres during early life in common gulls (Larus canus)
Parental age does not influence offspring telomeres during early life in common gulls (Larus canus)
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父母年龄并不影响普通海鸥（Larus canus）早期生命中的后代端粒
DOI：
10.1111/mec.15905
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发表时间：
2021
影响因子：
4.9
通讯作者：
Giraudeau, M.
中科院分区：
文献类型：
--
作者：
Sepp, T.;Meitern, R;Heidinger, B.;Noreikiene, K.;Rattiste, K.;Horak, P.;Saks, L.;Kittilson, J.;Urvik, J.;Giraudeau, M.
父母年龄可以通过遗传和表观遗传效应影响后代端粒长度，但这些影响在发育过程中的哪个阶段建立尚不清楚。为了解决这个问题，我们在普通海鸥（Larus canus）中进行了一项交叉培养实验，使我们能够区分出生前和纳塔尔后父母年龄对后代端粒长度的影响。在父母年龄组（年轻和年老）内和之间的窝卵完成后交换整个窝卵，并在孵化时和最快生长期（11天后）从小鸡收集血液样品以测量端粒。无论是纳塔尔的年龄，也不是养父母预测端粒长度或端粒长度的变化，他们的小鸡。端粒长度（TL）是可重复的小鸡，但增加整个发展（重复性= 0.55，组内相关系数内采样事件0.934）。端粒长度和端粒长度的变化不能通过纳塔尔后的生长速度来预测。综上所述，这些发现表明，在普通海鸥中，早期生命中的端粒长度不受父母年龄或生长速度的影响，这可能表明保护机制在这种相对长寿的物种中缓冲端粒在发育过程中免受外部条件的影响。
Parental age can affect offspring telomere length through heritable and epigenetic‐like effects, but at what stage during development these effects are established is not well known. To address this, we conducted a cross‐fostering experiment in common gulls (Larus canus) that enabled us distinguish between pre‐ and post‐natal parental age effects on offspring telomere length. Whole clutches were exchanged after clutch completion within and between parental age classes (young and old) and blood samples were collected from chicks at hatching and during the fastest growth phase (11 days later) to measure telomeres. Neither the ages of the natal nor the foster parents predicted the telomere length or the change in telomere lengths of their chicks. Telomere length (TL) was repeatable within chicks, but increased across development (repeatability = 0.55, intraclass correlation coefficient within sampling events 0.934). Telomere length and the change in telomere length were not predicted by post‐natal growth rate. Taken together, these findings suggest that in common gulls, telomere length during early life is not influenced by parental age or growth rate, which may indicate that protective mechanisms buffer telomeres from external conditions during development in this relatively long‐lived species.
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