Changes in vertical distribution of sea bass (Dicentrarchus labrax L.) during a hypoxic episode

被引：21

作者：

Schurmann, H ^{[1
]}

Claireaux, G ^{[1
]}

Chartois, H ^{[1
]}

机构：

[1] Ctr Rech Ecol Marine & Aquaculture LHoumeau, F-17137 Lhoumeau, France

来源：

HYDROBIOLOGIA | 1998年 / 372卷 / 0期

关键词：

telemetry; salinity; oxygen; diurnal rhythm;

D O I：

10.1023/A:1017030228754

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The vertical distribution of free-swimming sea bass (Dicentrarchus labrax I,.) was investigated in a 26 m(3) indoor tank by means of acoustic telemetry. During the experiment the bottom of the tank was made progressively hypoxic. In normoxic conditions, sea bass displayed a clear diurnal rhythm during which they occupied the surface at night and swam deeper in the water column during the day. When a vertical oxygen gradient was established, this behaviour changed and sea bass reduced the amplitude of their daily migration to avoid being exposed to the hypoxic bottom water layer.

引用

页码：207 / 213

页数：7

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