Spotted sand bass (Paralabrax maculatofasciatus) is one of the most common inshore reef fishes in the northern Gulf of California (GOC), Mexico, but has rarely been studied. Objectives of this study were to estimate age and growth parameters of this species from two areas in the northern GOC and use an age‐structured model to assess fishery yield and Spawning Potential Ratio (SPR) over a wide range of exploitations. Samples yielded fish up to age 8, although most were between age 2 and 5. Growth was extremely rapid, with most of the growth in length achieved in the first year, followed by much slower growth. Conditional rates of natural mortality averaged 0.37. Yield models predicted that spotted sand bass in the GOC were less vulnerable to fishing than those in the Pacific Ocean, likely due to faster growth and higher natural mortality. Growth overfishing and SPR values below 0.20 were only predicted at the lowest natural mortality and high (>0.50) exploitation rates. Results suggested that the species could support a commercial fishery in the GOC that might alleviate some of the conservation issues currently facing biologists in this unique marine ecosystem.

中文翻译：

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墨西哥加利福尼亚北部湾斑点沙鲈的年龄，生长和渔业评估

斑鲈（Paralabrax maculatofasciatus）是墨西哥北部加利福尼亚湾（GOC）最常见的近海礁鱼之一，但鲜有研究。这项研究的目的是估计来自GOC北部两个地区的该物种的年龄和生长参数，并使用年龄结构模型来评估各种开发中的渔业产量和产卵潜力比（SPR）。样品生产的鱼直到8岁为止，尽管大多数都在2至5岁之间。生长非常迅速，大部分长度的增长在第一年就达到了，其次是生长慢得多。有条件的自然死亡率平均为0.37。产量模型预测，与太平洋地区相比，GOC中的斑点鲈鱼较不易捕捞，这可能是由于其生长速度更快和自然死亡率更高。生长过度捕捞且SPR值低于0。仅以最低自然死亡率和高（> 0.50）开采率预测了20个。结果表明，该物种可以支持GOC中的商业渔业，这可能减轻目前在这种独特的海洋生态系统中生物学家面临的一些保护问题。