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Movements of juvenile yellowfin tuna (Thunnus albacares) within the coastal FAD network adjacent to the Palau National Marine Sanctuary: Implications for local fisheries development
Fisheries Research ( IF 2.4 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.fishres.2020.105688
Alexander Filous , Alan M. Friedlander , Lucas Griffin , Robert J. Lennox , Andy J. Danylchuk , Geory Mereb , Yimnang Golbuu

Abstract Pacific Island nations and territories must build their capacity to harvest pelagic fishes to ensure domestic food security into the future. The Republic of Palau recently created the Palau National Marine Sanctuary, a Marine Managed Area that was intended to conserve marine resources and enhance local pelagic fisheries. However, the capacity of the nation’s domestic fishery to exploit pelagic species must be built to meet these objectives and, to this aim, the development of a coastal network of Fish Attracting Devices (FADs) has been proposed. To inform the development of the nation’s FAD program, we used acoustic telemetry to study the movements of yellowfin tuna (Thunnus albacares) within Palau’s existing FAD network. Subadult yellowfin tuna (50−79 cm FL) remained within the FAD network for up to 175 days and young-of-the-year yellowfin tuna spent significantly more time in association with FADs in comparison to year-1 fish. A network analysis suggests that the Ngardmau and Peleliu FADs were the most important components of the current FAD network, and a mixed effects Poisson generalized linear model indicated that the residency of yellowfin tuna to these FADs was significantly related to mooring depth and distance from the reef. These results provide a description of yellowfin tuna movements within Palau’s FAD network and recommendations to improve the nation’s FAD program that are also applicable to other Pacific Island nations and territories that desire to improve domestic access to pelagic fish stocks.

中文翻译:

幼年黄鳍金枪鱼 (Thunnus albacares) 在帕劳国家海洋保护区附近沿海 FAD 网络内的运动:对当地渔业发展的影响

摘要 太平洋岛国和领土必须建立捕捞远洋鱼类的能力,以确保未来的国内粮食安全。帕劳共和国最近创建了帕劳国家海洋保护区,这是一个海洋管理区,旨在保护海洋资源并加强当地的远洋渔业。然而,必须建立国家国内渔业开发远洋物种的能力以实现这些目标,为此,已提议开发沿海引鱼装置 (FAD) 网络。为了为国家 FAD 计划的发展提供信息,我们使用声学遥测技术研究了帕劳现有 FAD 网络中黄鳍金枪鱼 (Thunnus albacares) 的运动。亚成体黄鳍金枪鱼(50-79 厘米 FL)在 FAD 网络中停留长达 175 天,与 1 年鱼相比,年幼的黄鳍金枪鱼与 FAD 相关的时间要长得多。网络分析表明,Ngardmau 和 Peleliu FAD 是当前 FAD 网络中最重要的组成部分,混合效应泊松广义线性模型表明,黄鳍金枪鱼对这些 FAD 的驻留与系泊深度和距珊瑚礁的距离显着相关. 这些结果描述了帕劳 FAD 网络内黄鳍金枪鱼的运动,并提出了改进国家 FAD 计划的建议,这些计划也适用于希望改善国内远洋鱼类种群获取的其他太平洋岛国和地区。
更新日期:2020-10-01
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