X. birchmanni life history data

Life history data from samples collected from wild populations of sheepshead swordtail, X. birchmanni, in Hidalgo, Mexico. NAs indicate missing data. Embryo staging was based on the methods described in Reznick DN, Endler JA. (1982) Evolution 86: 160-177, which in turn were based on the PhD thesis of SC Stearns. The embryo stage codes are as follows: VEE: Very early eyed EE: Early eyed LE: Late eyed VLE: Very late eye VY: Vitellogenic yolk本数据集包含采自墨西哥伊达尔戈州野生羊头剑尾鱼（sheepshead swordtail, X. birchmanni）种群的样本生活史数据，其中NAs代表缺失数据。 胚胎分期方法参考自Reznick DN与Endler JA于1982年发表于《进化》（Evolution）第86卷第160-177页的研究，该分期方案又基于SC Stearns的博士学位论文。 胚胎分期代码如下： VEE：极早期眼胚（Very early eyed） EE：早期眼胚（Early eyed） LE：晚期眼胚（Late eyed） VLE：极晚期眼胚（Very late eye） VY：卵黄发生期卵黄（Vitellogenic yolk）