Post-release horizontal and vertical behavior and philopatry of deepwater longtail red snapper Etelis coruscans around a bank
Post-release horizontal and vertical behavior and philopatry of deepwater longtail red snapper Etelis coruscans around a bank
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DOI：
10.1007/s12562-019-01287-2
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发表时间：
2019-03-01
影响因子：
1.9
通讯作者：
Hayashibara, Takeshi
中科院分区：
文献类型：
--
作者：
Okuyama, Junichi;Shishidou, Hirotoshi;Hayashibara, Takeshi
人们对深海笛鲷的行为和迁徙知之甚少，因为很难观察它们的深海栖息地。在日本Satsunan群岛周围沃茨的Ojika Se Bank对深水长尾红笛鲷Etelis coruscans进行了手动声学跟踪，以调查其释放后的水平和垂直行为。八个人被贴上了装有深度传感器的发射器，以便跟踪。这八条鱼中至少有六条在放生后存活下来。这些鱼逐渐从王子湾浅滩分散，在释放后33 - 34天，只有三分之一的鱼留在那里。留在Ojika Se银行的鱼每天水平移动2.2 +/-2.0km，但仍停留在银行顶部附近。这些鱼分布在168.8 - 288.8-m的深度范围内，连续几天之间垂直移动高达50.0 m。据我们所知，这是第一次报告任何种类的深海笛鲷每天精细的水平和垂直运动。
Little is known about the behavior and migration of deep-sea snappers, as observation of their deep-sea habitats is difficult. Manual acoustic tracking of deepwater longtail red snappers Etelis coruscans was conducted at the Ojika Se Bank, in the waters around the Satsunan Islands, Japan, to investigate their post-release horizontal and vertical behavior. Eight individuals were tagged with transmitters equipped with depth sensors for tracking. At least six of these eight fish survived after release. The fish gradually dispersed from the Ojika Se Bank, and only one-third remained there 33-34days after release. The fish that remained at the Ojika Se Bank moved horizontally by 2.2 +/- 2.0km daily, but remained near the top of the bank. The fish were distributed in the 168.8- to 288.8-m depth range, and moved vertically by up to 50.0m between consecutive days. To the best of our knowledge, this is the first report on the daily fine-scale horizontal and vertical movements of any species of deep-sea snapper.