Fishery‐independent data are important for the effective management of reef fishes in the eastern Gulf of Mexico. Proper characterization of selectivity, or the effectiveness of each type of sampling gear in capturing a species or a size‐class, is essential to ensure that assessment models treat various sources of data appropriately. In this study, we analyzed fishery‐independent data that was collected using stereo‐baited remote underwater video (S‐BRUV) arrays, chevron traps (TRAP), and two types of hooked gear (repetitive timed‐drop [RTD] and vertical longline [VLL]) to assess gear‐related differences of species composition and size selectivity of managed reef fishes in the eastern Gulf of Mexico. Significant differences were detected in the assemblage structures of reef fishes in relation to region, gear type, and depth. Overall, eight managed species were identified as contributing to the top 70% of the assemblage structure for each gear type. Stereo‐baited remote underwater video had the highest abundances for most of the species and the highest number of species captured, while VLL had the lowest. Two economically and ecologically important species (Red Grouper Epinephelus morio and Red Snapper Lutjanus campechanus) were common to all four gear types, and the size selectivity of these two species generally overlapped. However, significant differences among gear types were detected. Unimodal selection curves for hooked gears indicated that size of Red Snapper and Red Grouper increased as hook size increased. These data provide insight on species and size selectivity of multiple gears, which will contribute to future survey design and aid in the management of reef‐fish populations.

中文翻译：

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评估墨西哥东部海湾管理型礁鱼的多种采样装置的相对选择性

与渔业无关的数据对于有效管理墨西哥湾东部的礁鱼很重要。正确地表征选择性，或者每种类型的采样装置在捕获物种或规模分类中的有效性，对于确保评估模型正确处理各种数据源至关重要。在本研究中，我们分析了使用立体诱饵远程水下视频（S-BRUV）阵列，人字形陷阱（TRAP）以及两种类型的钩挂渔具（重复定时跌落[RTD]和垂直延绳钓）收集的与渔业无关的数据[VLL]）来评估墨西哥东部海湾受管理的珊瑚礁鱼类的种类组成和大小选择性与齿轮相关的差异。在区域，渔具类型和深度方面，在礁鱼的组装结构中发现了显着差异。总体，确定了8个受管理的物种，它们构成了每种齿轮类型的装配结构的前70％。带立体声诱饵的远程水下视频在大多数物种中的丰度最高，捕获的物种数量最高，而VLL最低。两个在经济和生态上很重要的物种（红色石斑鱼Epinephelus morio和Red Snapper Lutjanus campechanus是这四种齿轮的共同特征，这两个物种的大小选择性通常重叠。但是，发现齿轮类型之间存在显着差异。钩形齿轮的单峰选择曲线表明，随着钩形尺寸的增加，红鲷鱼和红石斑鱼的尺寸增加。这些数据提供了关于多种渔具的种类和大小选择性的见解，这将有助于未来的调查设计并有助于管理礁鱼种群。