Attraction of an artificial reef: a migratory demersal flounder remains in shallow water under high temperature conditions in summer
Attraction of an artificial reef: a migratory demersal flounder remains in shallow water under high temperature conditions in summer
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人工鱼礁的吸引力：夏季高温条件下，迁徙的底层比目鱼留在浅水中
DOI：
10.1007/s10641-021-01153-0
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发表时间：
2021
影响因子：
1.4
通讯作者：
Hori Masakazu
中科院分区：
文献类型：
--
作者：
Mitamura Hiromichi;Nishizawa Hideaki;Mitsunaga Yasushi;Tanaka Kotaro;Takagi Junichi;Noda Takuji;Tsujimura Hirotaka;Omi Hiroaki;Sakurai Ryo;Sato Masaaki;Arai Nobuaki;Hori Masakazu
近海人造结构，称为人工礁（例如，风力发电场、石油平台和人造岛屿）影响到野生洄游海洋动物的移动和迁徙。已知某些种类的洄游中上层和底栖鱼类利用人工礁作为觅食区、作为空间参考（航行地标）或作为会合点。然而，人工鱼礁对底栖比目鱼洄游行为的影响却知之甚少。大理石纹比目鱼（Pseudopleuronectes yokohamae）是一种重要的经济比目鱼，冬季在浅水区产卵，夏季在深水区躲避高温。在这项研究中，2016年6月在大坂湾内的浅水区释放了39条标记的大理石比目鱼，然后每周从渔船上积极跟踪，主要是在更深的沃茨（100-140米），直到2016年9月中旬。我们的主动跟踪在较深的沃茨中没有检测到标记的鱼，而在高水温（26 °C）的人工鱼礁（离岸人工岛）周围的浅水（10-15米）中检测到36%的鱼。我们认为，一部分的大理石比目鱼人口并没有显示季节性迁移，但仍然在浅水区周围的人工鱼礁，即使在夏季的水温很高。我们认为这与人工鱼礁提供丰富的食物有关。
Offshore manmade structures, termed artificial reefs (e.g., wind farms, oil platforms, and manmade islands), affect the movement and migration of wild migratory marine animals. Certain types of migratory pelagic and benthic fish are known to utilize artificial reefs as feeding areas, for spatial reference (landmarks for their navigation), or as meeting points. However, little is known about the impact of artificial reefs on the migratory behavior of demersal flatfish. The marbled flounder (Pseudopleuronectes yokohamae), an important commercial flatfish species, exhibits seasonal migration between shallow water for spawning in winter and deeper water to avoid high water temperatures in summer. In this study, 39 tagged marbled flounders were released in the shallow water of the inner Osaka Bay area in June 2016, and then actively tracked, predominantly in deeper waters (100–140 m), from a fishing boat every week until mid-September 2016. Our active tracking detected no tagged fish in the deeper waters, whereas 36% of the fish were detected in the shallow water (10–15 m) around an artificial reef (offshore manmade island) at a high water temperature (26 °C). We suggest that a portion of the marbled flounder population did not show seasonal migration but remained in the shallow water around the artificial reef, even though the water temperature was high in summer. We suggest that this is related to the abundant food supply associated with the artificial reef.
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