Parental age effects on offspring fitness in a wild population of a short-lived reptile

As organisms age, the fitness of the offspring they produce can decline, which is often attributed to parental senescence. However, few studies have tested for effects of parental age on offspring fitness in wild populations or in short-lived vertebrates, and only recently have studies begun to examine such effects in male and female offspring independently. Here, we use five generations of mark-recapture and genetic parentage data from an island population of a short-lived lizard, the brown anole (Anolis sagrei), to test for effects of maternal and paternal age on the survival to adulthood, first-year reproductive success, longevity, and lifetime fitness of their offspring. We tested for effects of maternal and paternal age on components of offspring fitness using two methods: 1) “within-year” analyses of parents of different ages within the same annual reproductive season, and 2) “within-parent” repeated-measures analyses of the same parents at different ages across successive reprodu..., , # Parental age effects on offspring fitness in a wild population of a short-lived reptile

Dataset DOI: [10.5061/dryad.jm63xsjpz](10.5061/dryad.jm63xsjpz)

## Description of the data and file structure

The findings of this paper are drawn from a mark-recapture and genotyping study carried out on a focal island population of brown anole lizards (*Anolis sagrei*) within the Guana Tolomato Matanzas Natural Estuarine Research Reserve in Florida. Although animals in this population have been tracked between 2011 and 2025 from a long-term ongoing study, this dataset primarily focuses on the individuals in the 2015-2018 cohorts, their survival, reproductive fitness, and parent ages. In this study, we evaluated the effects of parental age on offspring fitness. We tested for both maternal and paternal age effects on the fitness of sons and daughters.

Based on the methods, the dataset provided illustrates individual identity of animals (e.g., ID, Sex, Cohort) and information on parents, as dete..., , **Changes after Oct 7, 2025:** We have added a file \"genotypes.csv\" that provides the single nucleotide polymorphism (SNP) genotypes used to assign parentage in the population.

随着生物体衰老，其所产生子代的适合度会下降，这通常被归因于亲本衰老。然而，极少有研究在野生种群或短寿命脊椎动物中检验亲本年龄对子代适合度的影响，且直至近年才有研究开始分别针对雄性和雌性子代考察此类效应。本研究利用来自某岛屿种群的5代标记重捕（mark-recapture）与遗传亲权鉴定数据，研究对象为短寿命蜥蜴——棕色安乐蜥（*Anolis sagrei*），以此检验母本与父本年龄对子代成体存活率、第一年繁殖成功率、寿命及终生适合度的影响。我们采用两种方法检验亲本年龄对子代适合度组分的影响：1）同年度繁殖季内不同年龄亲本的「年内分析」；2）同亲本在多次繁殖的不同年龄下的「亲本内重复测量分析」……，，# 短寿命爬行动物野生种群的亲本年龄对子代适合度的影响

数据集DOI：[10.5061/dryad.jm63xsjpz](10.5061/dryad.jm63xsjpz)

## 数据与文件结构说明
本研究的结论基于一项针对佛罗里达州瓜纳·托洛马托·马坦萨斯自然河口研究保护区内的棕色安乐蜥（*Anolis sagrei*）目标岛屿种群开展的标记重捕与基因分型研究。尽管该种群的个体自2011年至2025年已被长期持续监测，但本数据集主要聚焦于2015-2018年同群个体，及其存活情况、繁殖适合度与亲本年龄。本研究旨在评估亲本年龄对子代适合度的影响，检验母本与父本年龄对子代（雄性与雌性）适合度的效应。

基于本研究的方法，所提供的数据集包含动物个体标识信息（如ID、性别、同群队列）以及亲本相关信息，具体内容详见……，，**2025年10月7日后的更新：** 我们新增了"genotypes.csv"文件，其中包含用于该种群亲权鉴定的单核苷酸多态性（single nucleotide polymorphism, SNP）基因型数据。