Seychelles warblers with silver spoons: Juvenile body mass is a lifelong predictor of annual survival, but not annual reproduction or senescence.
Seychelles warblers with silver spoons: Juvenile body mass is a lifelong predictor of annual survival, but not annual reproduction or senescence.
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塞舌尔莺与银匙：青少年的身体质量是一个终身预测每年生存，但不是每年繁殖或衰老。
DOI：
10.1002/ece3.9049
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发表时间：
2022-07
影响因子：
2.6
通讯作者：
Richardson, David S.
中科院分区：
文献类型：
--
作者：
Brown, Thomas J.;Dugdale, Hannah L.;Hammers, Martijn;Komdeur, Jan;Richardson, David S.
发育过程中所经历的环境及其对内在条件的影响可以对个体表型产生持久的结果，并可能导致成人衰老轨迹的变化。然而，由于难以总结出生条件和长期监测自由漫游的长寿物种的个体，这种关系在野生种群中的性质仍然不确定。利用严密监测的塞舌尔莺（Acrocephalus sechellensis）封闭种群，我们确定幼鸟体重是否与出生时的社会环境因素、与该系统中适应性相关的特定遗传特征、成虫存活率和衰老相关特征相关。出生在食物充足季节和出生群体较小（即竞争对手较少）的幼鱼体重更重。相比之下，幼鱼体重和遗传特征之间没有关联。此外，体型校正后的体重与成年存活率呈正相关，但没有单独衡量出生食物的可得性、群体大小或遗传性状，这表明青少年体重是出生条件的指标。体重较重的幼鱼体重较大，成年后的年存活率也较高，与年龄无关。相比之下，幼鱼的质量与成鱼端粒长度损耗（体细胞应激的一种衡量指标）和年繁殖之间没有关联。这些结果表明，青少年体重虽然与衰老轨迹无关，但可能由于银勺效应而影响存活到老年的可能性。这项研究表明，测量幼鱼的内在条件可以为野生种群中个体的长期适应性提供重要的见解。生命早期的内在和外在因素对后期的健康和衰老有很大的影响，但在野生种群中这种影响的方向和原因尚不确定。我们测试了幼鸟的体重是否会影响野生塞舌尔林莺种群的衰老。体重较重的幼鱼在成年期的年存活率较高，这与年龄和年繁殖无关——这表明幼鱼的体重对成年期的健康有银勺效应，但对衰老的发生/速度没有影响。
The environment experienced during development, and its impact on intrinsic condition, can have lasting outcomes for individual phenotypes and could contribute to variation in adult senescence trajectories. However, the nature of this relationship in wild populations remains uncertain, owing to the difficulties in summarizing natal conditions and in long‐term monitoring of individuals from free‐roaming long‐lived species. Utilizing a closely monitored, closed population of Seychelles warblers (Acrocephalus sechellensis), we determine whether juvenile body mass is associated with natal socioenvironmental factors, specific genetic traits linked to fitness in this system, survival to adulthood, and senescence‐related traits. Juveniles born in seasons with higher food availability and into smaller natal groups (i.e., fewer competitors) were heavier. In contrast, there were no associations between juvenile body mass and genetic traits. Furthermore, size‐corrected mass—but not separate measures of natal food availability, group size, or genetic traits—was positively associated with survival to adulthood, suggesting juvenile body mass is indicative of natal condition. Heavier juveniles had greater body mass and had higher rates of annual survival as adults, independent of age. In contrast, there was no association between juvenile mass and adult telomere length attrition (a measure of somatic stress) nor annual reproduction. These results indicate that juvenile body mass, while not associated with senescence trajectories, can influence the likelihood of surviving to old age, potentially due to silver‐spoon effects. This study shows that measures of intrinsic condition in juveniles can provide important insights into the long‐term fitness of individuals in wild populations. Intrinsic and extrinsic factors in early‐life can have a large impact on later‐life fitness and ageing, but the direction and reason for this effect in wild populations is uncertain. We tested whether juvenile body mass influences senescence in a wild population of Seychelles warblers. Heavier juveniles had higher rates of annual survival in adulthood, independently of age and annual reproduction ‐ indicating a silver‐spoon effect of juvenile body mass on adult fitness, but not on senescence onset/rate.
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DOI：
10.1111/jzo.12213
发表时间：
2015-05
期刊：
Journal of zoology (London, England : 1987)
影响因子：
--
作者：
Barnett CA;Suzuki TN;Sakaluk SK;Thompson CF
通讯作者：
Thompson CF
DOI：
10.1073/pnas.1704350114
发表时间：
2017-10-24
影响因子：
11.1
作者：
Bebbington K;Kingma SA;Fairfield EA;Dugdale HL;Komdeur J;Spurgin LG;Richardson DS
通讯作者：
Richardson DS
影响因子：
2.4
作者：
Cuthill, IC;Maddocks, SA;Jones, EKM
通讯作者：
Jones, EKM
DOI：
10.1098/rspb.1998.0392
发表时间：
1998-06-07
影响因子：
4.7
作者：
Adriaensen, F;Dhondt, AA;Matthysen, E
通讯作者：
Matthysen, E
影响因子：
4.8
作者：
Brouwer, Lyanne;Richardson, David S.;Komdeur, Jan
通讯作者：
Komdeur, Jan