Pelagic fish distribution and ontogenetic vertical migration in common mesopelagic species off Lützow-Holm Bay (Indian Ocean sector, Southern Ocean) during austral summer
Pelagic fish distribution and ontogenetic vertical migration in common mesopelagic species off Lützow-Holm Bay (Indian Ocean sector, Southern Ocean) during austral summer
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DOI：
10.1007/s00300-009-0643-0
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发表时间：
2009-05
期刊：
影响因子：
1.7
通讯作者：
M. Moteki;N. Horimoto;Riou Nagaiwa;K. Amakasu;T. Ishimaru;Y. Yamaguchi
中科院分区：
文献类型：
--
作者：
M. Moteki;N. Horimoto;Riou Nagaiwa;K. Amakasu;T. Ishimaru;Y. Yamaguchi
2005年1月，在南大洋印度洋部分的Lützow-Holm湾，在午夜太阳期间，对鱼类的水平和垂直分布进行了研究。从六个不连续的深度层（0- 2 000米）对鱼类进行取样。从表层到200 m的各层中，最丰富的鱼类是南极Electrona antarctica和Notolepis coatsi的幼虫期。在200 ~ 2000 m层，各站鱼类组合相对均匀，以E. anarctica（幼年-亚成体）、小齿圆口鱼和anarcticusanarcticus。聚类分析显示，三个上层社区有关的水温和盐度。一个个体发育栖息地转移到更深的层是明显的为E。anapartica、北新单胞菌N. coatsi和B.南极洲。在E中观察到对温暖沃茨的偏好。anaerotica（幼虫）和N. coatsi（前屈至屈曲幼虫），尽管它们分布在海洋上层区的温度和盐度范围很广。
The horizontal and vertical distributions of fish were examined off Lützow-Holm Bay in the Indian Ocean sector of the Southern Ocean during midnight sun in January 2005. Fish were sampled from six discrete depth layers (0–2,000 m). The most abundant fish in layers from the surface to 200 m were larval stages ofElectrona antarcticaandNotolepis coatsi. In layers from 200 to 2,000 m, fish assemblages were relatively uniform among all stations and were dominated byE. antarctica(juvenile–subadult),Cyclothone microdon, andBathylagus antarcticus. Cluster analysis revealed three epipelagic communities related to water temperature and salinity. An ontogenetic habitat shift to deeper layers was apparent forE. antarctica,N. coatsi, andB. antarcticus. Preferences for warm waters were observed inE. antarctica(larvae) andN. coatsi(preflexion to flexion larvae), although they were distributed across a broad range of temperature and salinity in epipelagic zones.