Warsaw grouper (Hyporthodus nigritus) in the Gulf of Mexico (GoM) are currently managed as a single-stock; however, patchy distribution of suitable habitat may promote the development of discrete populations with different life history characteristics thereby complicating conservation policy. We estimated ages and age-length relationships of Warsaw grouper from different geographic regions in the GoM and applied von Bertalanffy growth functions (VBGF) to estimate growth parameters (L_∞ and K) for each region. Otolith-based ages ranged from 1 to 91 years and estimated L_∞ and growth coefficient (K) derived from the VBGF for all Warsaw grouper combined were 188.8 cm total length (TL) and 0.034 respectively. Region-specific growth parameters were similar for most of the GoM when VBGFs were limited to Warsaw grouper < 25 years old, though growth was considerably faster from the southeast GoM. When our age-length key was applied to fisheries-dependent length data from the GoM in 2001–2006 and 2011–2016, this fishery was comprised primarily of Warsaw grouper < age-1, but the mean age increased between catches from 2001 to 2006 (4.7 ± 8.3) and 2011–2016 (7.6 ± 6.4). Instantaneous mortality rates (Z) based on the decline of log abundance on age indicated relatively low Z rates across the four regions (range: 0.09−0.18), with a significantly higher mortality rate in the western GoM (0.17) than the eastern GoM (0.08). In this study we also observed a greater longevity (91 years) for the species than previously documented, greater than double the longevity used to develop current management policy.

墨西哥湾 (GoM) 的华沙石斑鱼 ( Hyporthodus nigritus)目前作为单一种群进行管理；然而，合适栖息地的零散分布可能会促进具有不同生活史特征的离散种群的发展，从而使保护政策复杂化。我们估计了来自马来西亚不同地理区域的华沙石斑鱼的年龄和年龄-长度关系，并应用 von Bertalanffy 生长函数 (VBGF) 来估计每个区域的生长参数 ( L _∞和K )。基于耳石的年龄范围为 1 至 91 岁，估计L _∞和生长系数 ( K)来自所有华沙石斑鱼的 VBGF 总长度 (TL) 分别为 188.8 厘米和 0.034 厘米。当 VBGF 仅限于 25 岁以下的华沙石斑鱼时，大部分 GoM 的区域特定生长参数相似，但 GoM 东南部的生长速度要快得多。当我们的年龄长度密钥应用于 2001-2006 年和 2011-2016 年来自马来西亚的渔业相关长度数据时，该渔业主要包括华沙石斑鱼 < 1 岁，但平均年龄从 2001 年到 2006 年增加(4.7 ± 8.3) 和 2011-2016 (7.6 ± 6.4)。基于对数丰度随年龄下降的瞬时死亡率 ( Z ) 表明Z相对较低四个地区的死亡率（范围：0.09-0.18），马来西亚西部（0.17）的死亡率明显高于东部（0.08）。在这项研究中，我们还观察到该物种的寿命（91 年）比以前记录的要长，是用于制定当前管理政策的寿命的两倍多。