Life histories for 94 chondrichthyans used to calculate updated estimates of maximum intrinsic rate of population increase

This dataset includes life history parameters for 94 chondrichthyans used to calculate updated estimates of maximum intrinsic rate of population increase (<i>r</i>_max) as shown in Pardo et al. (2016). The data here was primarily obtained from Garcia et al. (2008), however we have excluded species from their dataset that did not have values for maximum age or litter size. We have included life history parameters for the Basking Shark (<i>Cetorhinus maximus</i>). <br><br>Life history traits included are maximum size (<b>length_max</b>), von Bertalanffy growth coefficient (<b>k</b>), age at maturity (<b>age_mat</b>), maximum age (<b>age_max</b>), average lifespan (<b>ave_lifespan</b>) which was defined as the midpoint between age at maturity and maximum age, litter size (<b>l</b>), and breeding interval (<b>i</b>).<br><br>This dataset includes three different <i>r</i>_max estimates: published estimates of <i>r</i>_max based on the method outlined in Garcia et al. (2008) (<b>rmax_published_previous</b>), <i>r</i>_max estimates we recalculated using the method outlined in Garcia et al. (2008) (<b>rmax_previous_recalc</b>), and updated <i>r</i>_max estimates we calculated using the method outlined in Pardo et al. (2016) (<b>rmax_updated_recalc</b>). <br><br>Given that there are slight discrepancies in <i>r</i>_max estimates for a few species between published values from Garcia et al. (2008) and our recalculated estimates using their methodology, we used our own <i>r</i>_max recalculation using the previous method to compare with our <i>r</i>_max estimates based on our updated method. <br><br><br>References:<br><br>García VB, Lucifora LO, Myers RA (2008) The importance of habitat and life history to extinction risk in sharks, skates, rays and chimaeras.<i> Proceedings of the Royal Society of London, B</i> 275: 83-89.<br><br>Pardo SA, Kindsvater HK, Reynolds JD, Dulvy NK. Maximum intrinsic rate of population increase in sharks, rays, and chimaeras: the importance of survival to maturity. <i>Canadian Journal of Fisheries and Aquatic Sciences</i>, available at http://dx.doi.org/10.1139/cjfas-2016-0069. <br>

本数据集涵盖94种软骨鱼纲（Chondrichthyes）的生活史参数，用于更新估算种群最大内禀增长率（maximum intrinsic rate of population increase, *r*_max），相关方法参见Pardo等人2016年的研究。本数据集主要源自Garcia等人2008年的研究，但剔除了其数据集中未提供最大年龄或胎仔数的物种。我们还补充了姥鲨（*Cetorhinus maximus*）的生活史参数。

本次收录的生活史性状包括：最大体长（**length_max**）、冯·贝塔朗菲（von Bertalanffy）生长系数（**k**）、性成熟年龄（**age_mat**）、最大年龄（**age_max**）、平均寿命（**ave_lifespan**，定义为性成熟年龄与最大年龄的中点值）、胎仔数（**l**）以及繁殖间隔（**i**）。

本数据集包含三类*r*_max估算值：一是基于Garcia等人2008年提出的方法得到的已发表*r*_max估算值（**rmax_published_previous**）；二是我们采用Garcia等人2008年的方法重新计算得到的*r*_max估算值（**rmax_previous_recalc**）；三是我们采用Pardo等人2016年的方法计算得到的更新版*r*_max估算值（**rmax_updated_recalc**）。

鉴于部分物种的*r*_max估算值在Garcia等人2008年的已发表结果与我们采用其方法重新计算的结果之间存在细微差异，我们选用基于原有方法自行重新计算的*r*_max估算值，与我们基于更新方法得到的*r*_max估算值进行对比。

### 参考文献

García VB, Lucifora LO, Myers RA (2008) 生境与生活史对鲨鱼、鳐形目、魟和银鲛灭绝风险的重要性. *Proceedings of the Royal Society of London, B* 275: 83-89.

Pardo SA, Kindsvater HK, Reynolds JD, Dulvy NK. 鲨鱼、鳐形目和银鲛的种群最大内禀增长率：性成熟前存活率的重要性. *Canadian Journal of Fisheries and Aquatic Sciences*，可访问http://dx.doi.org/10.1139/cjfas-2016-0069.