We summarized advancements in Flathead Catfish Pylodictis olivaris biology, fisheries, and management published from 1999 to 2021. Our goal was to highlight recent advancements in Flathead Catfish research and address information needs for this species to encourage future research. We identified and reviewed 140 papers from 33 peer-reviewed journals, 27 theses/dissertations, and 13 technical reports on Flathead Catfish over the 23-year period. Most studies focused on introduced Flathead Catfish populations, age and growth, movements, diet, sampling methods, and human dimensions of Flathead Catfish fisheries. The number of studies published on riverine Flathead Catfish populations was greater than the number published on reservoir populations, and many studied negative effects of populations introduced outside of the species’ native range. Flathead Catfish are most commonly found in shallow (<3-m) locations with large woody debris or riprap and substrates with a hard bottom. Flathead Catfish movement studies identified three distinct migration periods: overwintering, prespawn/spawn, and late summer/fall, with little movement between these migrations. Flathead Catfish are typically lightly exploited (0–19% annual exploitation) and have typical (for a long-lived species) annual total mortality rates of 11–37%, ranging as high as 62%. Flathead Catfish are most commonly sampled using low-frequency electrofishing. Despite an increase in published literature on Flathead Catfish, information remains inadequate such that most state agencies do not follow a standardized protocol for sampling Flathead Catfish and information to guide management approaches for the species is limited. Minimal research on Flathead Catfish reproduction and spawning has occurred since 1999. Additional research is needed on these and other topics to provide information critical to managing this important species.

中文翻译：

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平头鲶鱼研究的两个十年进展

我们总结了平头鲶鱼Pylodictis olivaris 的进展生物学、渔业和管理出版于 1999 年至 2021 年。我们的目标是突出平头鲶鱼研究的最新进展，并解决该物种的信息需求，以鼓励未来的研究。在 23 年的时间里，我们从 33 种同行评审期刊、27 篇论文/学位论文和 13 份关于平头鲶鱼的技术报告中识别和审查了 140 篇论文。大多数研究集中在引进的鲇鱼种群、年龄和生长、运动、饮食、采样方法和平头鲶鱼渔业的人为方面。发表的关于河流鲇鱼种群的研究数量大于发表在水库种群的研究数量，许多研究了在物种原生范围之外引入种群的负面影响。平头鲶鱼最常见于浅水区（< 3-m) 有大块木质碎屑或抛石以及底部坚硬的基材的位置。平头鲶鱼运动研究确定了三个不同的迁徙时期：越冬、产卵前/产卵和夏末/秋季，这些迁徙之间几乎没有运动。平头鲶鱼通常被轻度开发（每年开发 0-19%），典型的（对于长寿物种）年总死亡率为 11-37%，高达 62%。平头鲶鱼最常使用低频电捕鱼进行采样。尽管有关扁头鲶的已发表文献有所增加，但信息仍然不足，以至于大多数州机构不遵循对扁头鲶进行采样的标准化协议，并且指导该物种管理方法的信息有限。