Field experiments on depth selection by juvenile plaice Pleuronectes platessa

Marine Ecology Progress Series

M. T. Burrows¹  L. Robb¹  R. N. Gibson¹ 

关键词: Plaice;    Pleuronectes platessa;    Depth distribution;    Depth fidelity;    Homing;    Habitat selection;   

DOI  :  10.3354/meps09034

学科分类：海洋学与技术

来源: Inter-Research

【 摘 要 】

ABSTRACT: After settlement on sandy beaches in spring, juvenile (0-group) plaice Pleuronectes platessa L. spend the summer and autumn months at depths <5 m. During this time, there is a strong length–depth relationship in which the smaller fish are most common at the shallow end of their depth range. Mark and recapture experiments with fish caught at depths of 0.5 and 2.5 m demonstrated that nearly all fish subsequently released at their depth of capture stayed at that depth, and few moved to other depths. In contrast, many fish reciprocally transplanted between these depths returned to their depth of capture within 2 d, and very few remained at the transplant depth. The results indicate that juvenile plaice have a fidelity to, and can actively select, a particular depth, although there may be some movement between depths, most of which at the time of the experiment (August/September) was directed offshore.

【 授权许可】

Unknown