Estuarine residency and habitat preferences of Atlantic Tripletail in the northwestern Gulf of Mexico

IF 1.8 3区 农林科学 Q2 FISHERIES
David Ushakow, Elliot Briell, Zachary Olsen, Joel Anderson, Leslie Hartman
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引用次数: 0

Abstract

Objective

The Atlantic Tripletail Lobotes surinamensis is a globally distributed subtropical and tropical fish species that inhabits estuaries throughout the northern Gulf of Mexico (GOM), particularly during warm months. Little is known about distribution and residency patterns within estuaries, as the species is rarely caught in the recreational fishery, and virtually no commercial fishery exists for the species in the GOM.

Methods

We used data from a long-term fishery-independent gill-net survey to model estuarine distribution throughout Texas and to relate environmental variables to the Atlantic Tripletail catch.

Result

Although there were no observable temporal trends in catch over the time series (1990–2022), the most recent 6 years included record catch in six of the 10 major Texas estuaries, possibly indicating a recent pulse in abundance. Catch throughout the time series was spatially aggregated in a small number of “hot spots” observed coastwide. Latitude was the best predictor of catch, although wind fetch and wind aspect (wind direction in relation to shoreline direction) were important predictors, and catch was highest near GOM inlets. The Texas Parks and Wildlife Department gill-net sampling program caught a range of Atlantic Tripletail between 171 and 880 mm total length, indicating a potential gear bias against juveniles.

Conclusion

Despite this gear bias, these data shed light on the factors that drive Atlantic Tripletail estuarine distribution and abundance in the northwestern GOM. Wind-driven passive movements in the estuary, combined with active selection of polyhaline habitats near GOM inlets, might be primary drivers of Atlantic Tripletail catch, thus supporting findings from previous studies.

Abstract Image

墨西哥湾西北部大西洋三疣梭子蟹的河口居住地和栖息地偏好
目标 大西洋三疣梭子蟹(Lobotes surinamensis)是一种分布于全球的亚热带和热带鱼类,栖息于整个墨西哥湾(GOM)北部的河口,尤其是在温暖的月份。由于该物种很少被休闲渔业捕获,而且在墨西哥湾几乎不存在针对该物种的商业渔业,因此人们对其在河口的分布和栖息模式知之甚少。 方法 我们利用与渔业无关的长期刺网调查数据来模拟整个得克萨斯州的河口分布情况,并将环境变量与大西洋三疣梭子蟹的捕获量联系起来。 结果 虽然在时间序列(1990-2022年)中没有观察到渔获量的时间趋势,但最近6年在得克萨斯州10个主要河口中的6个河口的渔获量创下了记录,这可能表明最近出现了丰量脉冲。在整个时间序列中,渔获量在空间上聚集在沿海观察到的少数 "热点 "地区。纬度是渔获量的最佳预测因子,尽管风向和风向(风向与海岸线方向的关系)也是重要的预测因子,而且全球海洋生态系统入海口附近的渔获量最高。得克萨斯州公园与野生动物管理局刺网取样计划捕获的大西洋三疣梭子蟹总长度在 171 毫米到 880 毫米之间,这表明渔具对幼鱼可能存在偏差。 结论 尽管存在渔具偏差,但这些数据揭示了驱动大西洋三疣梭子蟹在 GOM 西北部河口分布和丰度的因素。风驱动的河口被动运动,加上对 GOM 入海口附近多卤栖息地的主动选择,可能是大西洋三疣梭子鱼捕获量的主要驱动因素,从而支持了之前的研究结果。
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来源期刊
Marine and Coastal Fisheries
Marine and Coastal Fisheries FISHERIES-MARINE & FRESHWATER BIOLOGY
CiteScore
3.40
自引率
5.90%
发文量
40
审稿时长
>12 weeks
期刊介绍: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science publishes original and innovative research that synthesizes information on biological organization across spatial and temporal scales to promote ecologically sound fisheries science and management. This open-access, online journal published by the American Fisheries Society provides an international venue for studies of marine, coastal, and estuarine fisheries, with emphasis on species'' performance and responses to perturbations in their environment, and promotes the development of ecosystem-based fisheries science and management.
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