Abstract The median disc width at maturity DW ^ 50 ) of males (n=91, 32.2–92.0 cm) and females (n=157, 31.0–130.0 cm) of the bat ray (Myliobatis californica) was estimated through a multi-model inference in northwestern Mexico. Gompertz’s model and four common logistics models (Lysack, Bakhayokho, White, and Brouwer and Griffiths) were compared and all fit the data well (Akaike’s differences ≤2). Logistics models estimated the same DW ^ 50 for M. californica, and had similar Akaike’s weight suggesting that they are redundant models. Therefore, multi-model inference was performed individually with Gompertz’s model and each one of the logistic models to estimate an average model D W ¯ 50 , resulting in 64.6 cm DW for males and 99.0 cm DW for females in all analyzes. Multi-model inference is a useful tool to estimate the DW ^ 50 of a species with greater reliability, but redundant models must not be combined in this analysis. Thus, in this case it is advisable to perform the multi-model inference with Gompertz’s model and any of logistic models. The information obtained could contribute to the fishing management of the species, which becomes more relevant considering the high percentage of immature individuals of M. californica (53% of males and 90% of females) observed in the landings from Bahia Tortugas zone, Mexico.

中文翻译：

---

通过多模型推断估计墨西哥西北部蝙蝠鳐（Myliobatis californica）在性成熟时的大小

摘要 蝙蝠鳐 (Myliobatis californica) 雄性 (n=91, 32.2–92.0 cm) 和雌性 (n=157, 31.0–130.0 cm) 成熟时的中位圆盘宽度 DW ^ 50 ) 通过多模型估计墨西哥西北部的推论。Gompertz 的模型和四种常见的物流模型（Lysack、Bakhayokho、White 和 Brouwer 和 Griffiths）进行了比较，都很好地拟合了数据（Akaike 的差异≤2）。物流模型估计 M. californica 的 DW ^ 50 相同，并且具有相似的 Akaike 权重，表明它们是冗余模型。因此，使用 Gompertz 模型和每个逻辑模型单独执行多模型推断，以估计平均模型 DW¯ 50 ，在所有分析中导致男性的 DW 为 64.6 cm，女性的 DW 为 99.0 cm。多模型推理是一种有用的工具，可以以更高的可靠性估计物种的 DW ^ 50，但在此分析中不得合并冗余模型。因此，在这种情况下，建议使用 Gompertz 模型和任何逻辑模型执行多模型推理。获得的信息可能有助于该物种的捕捞管理，考虑到在墨西哥巴伊亚托尔图加斯地区的上岸中观察到的加利福尼亚 M. 未成熟个体的比例很高（53% 的雄性和 90% 的雌性），这变得更加重要。