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首页> 外文期刊>ICES Journal of Marine Science >Vertical and horizontal habitat use by white marlin Kajikia albida (Poey, 1860) in the western North Atlantic Ocean
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Vertical and horizontal habitat use by white marlin Kajikia albida (Poey, 1860) in the western North Atlantic Ocean

机译：北大西洋西部的白色马林鱼Kajikia albida（Poey，1860）在垂直和水平栖息地的利用

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摘要

Pop-up satellite archival tags were deployed on 40 white marlin Kajika albida (synonym: Tetrapturus albidus) off the coasts of Maryland and North Carolina (United States), and the island nation of Aruba in the Caribbean. Useful data were available for analysing vertical and horizontal habitat use from 28 individuals. Time at liberty ranged from 10 to 181 d (mean 115, SD 53.3). Seasonal southerly fall migration routes were documented for fish released off the northeastern United States, while those released off Aruba remained in the Caribbean basin. Horizontal movements ranged from 228 to 8084 km (19-100 km d(-1)) based on light-level geolocation estimates using a sea surface temperature and bathymetry-corrected Kalman filter. Analyses included an evaluation of vertical movements using Delta T, the time spent at temperature relative to the uniform temperature surface layer. Movements included exploration of depths as great as 387 m and ambient temperatures as low as 7.8 degrees C. However, the greatest proportion of time was spent in the upper 20 m of the water column for both day (50.8%) and night (81.6%), and time spent in water colder than 7 degrees C below the uniform temperature surface layer was negligible. Overall, this group showed less variability in vertical movement, and less tolerance to colder temperatures compared with similar studies for blue marlin Makaira nigricans and sailfish Istiophorus platypterus. Values for Delta T are presented in tabular format to allow direct input into habitat standardization models used to estimate vertical distribution and population abundance. The large spatial dispersion and disparate tracks illustrated in the present study serve to underscore the complexity of white marlin behaviour and habitat use, and further emphasize the many challenges facing the management and conservation of this overexploited species.
机译：弹出式卫星档案标签被部署在马里兰州和北卡罗来纳州（美国）沿海地区以及加勒比海的阿鲁巴岛的40个白色马林鱼Kajika albida（代号：Tetrapturus albidus）上。有用的数据可用于分析28个人的垂直和水平栖息地使用情况。自由时间为10到181 d（平均115，SD 53.3）。记录了从美国东北部释放的鱼类的季节性南方秋季迁徙路线，而从阿鲁巴释放的鱼类仍留在加勒比海盆地。根据使用海面温度和测深校正的卡尔曼滤波器进行的光水平地理位置估计，水平运动的范围为228至8084公里（19-100公里d（-1））。分析包括使用Delta T（在温度下相对于均匀温度表面层的温度所花费的时间）评估垂直运动。运动包括探查深至387 m的深度和低至7.8摄氏度的环境温度。但是，白天（50.8％）和晚上（81.6％）的水柱上部20 m花费的时间比例最大。 ），并且在低于均匀温度表层以下7摄氏度的水中花费的时间可以忽略不计。总体而言，与类似的蓝马枪Makaira nigricans和旗鱼Istiophorus platypterus的研究相比，该组的垂直运动变异性较小，对低温的耐受性较小。 Delta T的值以表格格式显示，以允许直接输入用于估计垂直分布和人口数量的栖息地标准化模型。本研究中说明的大空间分散和不同轨迹有助于强调白马林鱼行为和栖息地使用的复杂性，并进一步强调了对这种过度开发物种的管理和保护所面临的许多挑战。

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