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首页> 外文期刊>ICES Journal of Marine Science >Interannual site fidelity of Pacific halibut: potential utility of protected areas for management of a migratory demersal fish
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Interannual site fidelity of Pacific halibut: potential utility of protected areas for management of a migratory demersal fish

机译：大比目鱼的年际地点保真度：保护区对迁徙性沉没鱼的管理的潜在效用

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摘要

Pacific halibut is a large-bodied demersal fish species known to undertake large-scale winter spawning migrations. We characterized annual movement patterns of Pacific halibut relative to a Marine Protected Area (MPA) in Glacier Bay National Park, Alaska using electronic tags. In the summer of 2013, we deployed 25 Pop-up Satellite Archival Tags (PSATs) on halibut to determine seasonal movement patterns, where residency within the MPA was inferred by comparing PSAT depth and temperature records to stationary archival tag data and oceanographic survey data. To characterize within-summer movement patterns, 15 halibut tagged with PSATs were double-tagged with acoustic transmitters and actively tracked during the summers of 2013 and 2014. Home range behaviour and interannual site fidelity at spatial scales<5 km were observed for the majority of tagged fish. A small proportion (6/21 fish with PSAT data) departed the MPA on winter migrations during December 2013. A majority (4/6) of migratory fish returned to the MPA after an average of 57 d (s.d. 22 d) spent outside of the MPA. Migration timing generally coincided with existing winter commercial fishery closures. The annual movement patterns of tagged halibut relative to MPA boundaries and winter commercial fisheries closures suggest that the Glacier Bay MPA could serve as a year-round refuge from commercial harvest for both residential and migratory halibut. If halibut behaviour is similar in other areas, protected areas may provide some utility for management despite the migratory nature of halibut.
机译：大比目鱼是一种大型软体鱼类，已知会进行大规模的冬季产卵迁移。我们使用电子标签来描述太平洋大比目鱼相对于阿拉斯加冰川湾国家公园海洋保护区（MPA）的年度运动方式。 2013年夏天，我们在大比目鱼上部署了25个弹出式卫星档案标签（PSAT），以确定季节性运动方式，通过将PSAT深度和温度记录与固定的档案标签数据和海洋学调查数据进行比较，推断出MPA的居住地。为了表征夏季内的运动模式，在2013年和2014年夏季，对15个标有PSAT的大比目鱼与声发射器进行了双重标记，并对其进行了积极追踪。标记的鱼。一小部分（有PSAT数据的6/21条鱼）在2013年12月因冬季迁移而离开了MPA。在平均境外度过57 d（sd 22 d）后，大部分（4/6））游鱼类返回了MPA。 MPA。迁徙时机通常与现有的冬季商业性渔业关闭有关。带有标签的大比目鱼相对于MPA边界和冬季商业性渔业关闭的年度运动模式表明，冰川湾MPA可以作为住宅和迁徙大比目鱼商业收获的全年避难所。如果其他地区的大比目鱼行为相似，尽管大比目鱼具有迁徙性质，但保护区仍可为管理提供一些帮助。

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