New scale analyses reveal centenarian coelacanths Latimeria chalumnae - Datasets and R scripts

datasets and r scripts used in the publication « new scale analyses reveal centenarian coelacanths latimeria chalumnae”. datasets include catch information (identifier, catch year and month), biometric (total length, sex, weight) and ageing (circuli and macro-circuli numbers and corresponding marginal increments) data for the 27 coelacanth specimens used in this study, the extraction of von bertalanffy growth parameters (rate coefficient and asymptotic total length) and of life-history traits (age at maturity, maximum longevity, spawning frequency) in marine fish from fishbase (june 2020). r scripts describe (i) the marginal increment analysis, i.e. the analysis of the periodicity of circuli and macro-circuli formation, on the african coelacanth scales to validate ageing based on circuli, (ii) the body growth patterns of the african coelacanth according to the different ageing hypotheses and the fitting of the von bertalanffy, gompertz and logistic growth models to the corresponding length-at-age data, (iii) the comparison of the african coelacanth’s growth characteristics obtained with other marine fish through auximetric analysis and (iv) the location the african coelacanth along the slow-fast life-history continuum in marine fish.

本数据集收录了发表于《新型尺度分析揭示长寿矛尾鱼（Latimeria chalumnae）之奥秘》一文中所使用的数据集和 R 脚本。数据集涵盖了27个用于研究的矛尾鱼标本的捕获信息（标识符、捕获年份及月份）、生物测量数据（总长度、性别、体重）以及生长数据（年轮和宏观年轮数量及其对应的边缘增量）。此外，还包括了从 FishBase（2020年6月）中提取的冯·贝塔朗菲生长参数（速率系数和渐近总长度）以及海洋鱼类生命史特征（成熟年龄、最大寿命、产卵频率）。R 脚本描述了以下内容：（i）边缘增量分析，即对非洲矛尾鱼鳞片上年轮和宏观年轮形成周期的分析，以验证基于年轮的年龄鉴定方法；（ii）根据不同的生长假设，分析非洲矛尾鱼的身体生长模式，并对相应的年龄-长度数据进行冯·贝塔朗菲、高普兹和逻辑增长模型的拟合；（iii）通过生长分析比较非洲矛尾鱼与其他海洋鱼类生长特征的差异；（iv）非洲矛尾鱼在海洋鱼类缓慢-快速生命史连续体中的位置。