Satellite tagging of blue sharks (Prionace glauca) and other pelagic sharks off eastern Australia: depth behaviour, temperature experience and movements

John D. Stevens; Russell W. Bradford; Grant J. West

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Satellite tagging of blue sharks (Prionace glauca) and other pelagic sharks off eastern Australia: depth behaviour, temperature experience and movements

机译：在澳大利亚东部沿海地区对蓝鲨（Prionace glauca）和其他中上层鲨进行卫星标记：深度行为，温度经验和运动

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Satellite telemetry was used to study the movements and behaviour of ten blue sharks and one individual each of shortfin mako, thresher and bigeye thresher off eastern Australia. The tracks showed latitudinal movements of up to 1,900 km, but none of the sharks travelled away from the eastern Australian region. Tracking periods did not exceed 177 days. All species showed oscillatory dive behaviour between the surface layers to as deep as 560-1,000 m. Blue sharks spent 35-58% of their time in <50 m depths and 10-16% of their time in >300 m. Of these four species, the bigeye thresher spent the least time in the surface layers and the most time at >300 m depth. All four species showed clear diel behaviour generally occupying shallower depths at night than during the day. Blue sharks were mainly in 17.5-20.0℃ water, while the thresher sharks showed a more bimodal temperature distribution.

机译：卫星遥测技术被用于研究十只蓝鲨的运动和行为，以及在澳大利亚东部以外的短鳍鲨，脱粒机和大眼脱粒机各一名。航迹显示纬向运动可达1900公里，但没有任何一条鲨鱼离开澳大利亚东部地区。跟踪期限不超过177天。所有物种在表层之间均表现出振荡性的俯冲行为，深度可达560-1,000 m。蓝鲨花费其时间的35-58％在<50 m的深度，花费其10-16％的时间在> 300 m的深度。在这四个物种中，大眼脱粒机在表层花费的时间最少，而在> 300 m深度上花费的时间最多。所有这四个物种都表现出明显的diel行为，通常在夜间比白天占据更浅的深度。蓝鲨主要在17.5-20.0℃的水中，而脱粒鲨则显示出更多的双峰温度分布。

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《Marine biology》 |2010年第3期|575-591|共17页
作者
John D. Stevens; Russell W. Bradford; Grant J. West;
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CSIRO Marine & Atmospheric Research, GPO Box 1538, Hobart, TAS 7001, Australia;

rnCSIRO Marine & Atmospheric Research, GPO Box 1538, Hobart, TAS 7001, Australia;

rnCSIRO Marine & Atmospheric Research, GPO Box 1538, Hobart, TAS 7001, Australia;

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Satellite tagging of blue sharks (Prionace glauca) and other pelagic sharks off eastern Australia: depth behaviour, temperature experience and movements

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