期刊论文详细信息
Aquatic Biology
Functional morphology of the flounder allows stable and efficient gliding: an integrated analysis of swimming behaviour
Yasuhiko Naito1  Tsutomu Takagi1  Ryo Kawabe1  Hiroyuki Yoshino1 
关键词: Flounder;    Behaviour;    Biomechanics;    Morphology;    Glide;    Bio-logging;    CFD;    Computational fluid dynamics;   
DOI  :  10.3354/ab00237
学科分类:生物科学(综合)
来源: Inter-Research
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【 摘 要 】

ABSTRACT: Although technologies such as archival tags have been developed to monitor the behaviour of free-swimming fish, more advanced techniques are required in order to understand the basis of their behaviour. To assess the glide behaviour of the negatively buoyant Japanese flounder Paralichthys olivaceus, we adopted a new approach to examine the importance of the physical aspects of its swimming performance by integrating in situ bio-logging data from free-swimming fish with corresponding computational fluid dynamics (CFD) analyses. Field data from the data loggers revealed that flounder commenced powerless glides after swimming upwards. A theoretical simulation of this glide using CFD analysis revealed that the body angle producing the maximum lift/drag ratio was in agreement with the field data and that, during a glide, the moment equilibrium body angle of the flounder resulted in the longest glide distance. This suggests that the morphology of the flounder confers stability on its glide, making this mode of movement more energetically efficient.

【 授权许可】

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