Analysis of Movements and Behavior of Bighead Carps (Hypophthalmichthys nobilis) Considering Fish Passage Energetics in an Experimental Vertical Slot Fishway

Author:

Tan Junjun,Liu Zhenbiao,Wang Yu,Wang Yuanyang,Ke Senfan,Shi Xiaotao

Abstract

An understanding of fish movement behavior in response to flow field variables is important for exploring the hydrodynamic strategies of fish in fish passages. In this paper, bighead carps were taken as an example. The fish movement behavior response to water flow field information by means of estimating the energetic expenditure using an IBM approach in an experimental fishway was investigated. Fish swimming velocity, drag force, and energy expenditure were analyzed in varied flow conditions related to hydraulic variables, including velocity (V), turbulent kinetic energy (TKE), and strain rate (SR). The result indicated that the fish will require more energy in high TKE zones. This study provides a reference for optimizing the design of fish passages and fisheries management. This method can be applied to assess the efficiency of fish bypass structures and conduct fish survival studies.

Funder

National Natural Science Foundation of China

National Outstanding Youth Science Fund project of National Natural Science Foundation of China

the Open Research Fund of Hubei International Science and Technology Cooperation Base of Fish Passage

Publisher

MDPI AG

Subject

General Veterinary,Animal Science and Zoology

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