Model Of Fish Behavior Research Articles

A Methodology for Mathematical Modeling of Fish Behavior in a Water Tank

This paper deals with a method for investigating the behavior of fish in a water tank. The motion of fish is described mathematically by nonlinear state equations, in which the main causes for the motion are expressed as the components of the external force. A water tank experiment is carried out for obtaining the observation records of fish behavior. The time series data of the position for each fish is calculated from the image data recorded by a video tape. The parameter included in the model are estimated by using the least squares algorithm. As case studies, results are shown for two experiments in which bitter ling and rainbow trout are used respectively

Computer simulation of fish behavior in relation to fishing gear. II. Computer simulation of fish behavior in relation to a trap model.

A computer simulation was carried out in order to confirm the propriety of a mathematical model of fish behavior proposed by the authors. The model parameters had been estimated on the basis of the data of the water tank experiment performed previously. The present simulation test was done corresponding to another water tank experiment whose trap configuration was dif-ferent from the previous one. We considered the following three types of trap model; the trap net without leader net, the trap net with a leader net and a single mouth, and the trap net with two mouths. The rates of entering, escaping and remaining of a 5 fish group were compared with a satisfactory result between the water tank experiment and the corresponding computer simulation.

Recent Progress in the Control of Fish Behavior

Abstract The paper gives a survey of recent activities in developing techniques for controlling fish behavior over short and medium distances. The bases for control are described with reference to the sensory system of the fish and a simple model of fish behavior. It is suggested that an effective way of controlling fish behavior is by means of monditioning, in which reward or punishment is used in connection with an acoustical or visual signal. A number of possible applications which have been tested in practice are described.

A mathematical model of fish behavior in a water tank

A mathematical model is proposed to describe the behavior of fish in a water tank. The motion of the fish is expressed by a set of nonlinear state equations which consider external forces representing the interactions with other fish in a school and the effect of environmental fields. The parameters to be included are estimated by using observed data.

A multidimensional continuum model of fish behavior

A numerical model for the simulation and study of fish behavior is presented. The model, based on continuous representations in both biological and spatial dimensions, has been developed as part of a large Norwegian arctic ecosystems modeling project directed by Professor Jens G. Balchen of the University of Trondheim, Norway. The model describes the migratory behavior of fish, and is capable of incorporating a variety of hypothesized driving forces, such as food density, temperature, light, direction and magnitude of ocean currents, and local fish density. The model relies on standard finite difference numerical methods for solution of the continuum transport equations, and a gradient search conceptualization to determine fish taxis. Two driving forces, food and temperature fields, are used to provide a demonstration of the potentials of the proposed modeling methodology.

Modeling of Fish Behavior in Relation to Fishing

The purpose of this paper is to develop a method of modeling and simulation in the fishing techniques and tactics. The motion of fish is described by the nonlinear state equations, which contain the fundamental elements of fish behavior. The model parameters are estimated by using the observation data on a water tank experiment with small fish. The moving patterns of the school obtained by the computer simulation are examined in a good agreement with the experimental results. It is confirmed that the proposed model is available for investigating the fish behavior related to the fishing gears.

Recent Progress in the Control of Fish Behavior

The paper gives a survey of recent activities in developing techniques for controlling fish behavior over short and medium distances. The bases for control are described with reference to the sensory system of the fish and a simple model of fish behavior. It is suggested that an effective way of controlling fish behavior is by means of monditioning, in which reward or punishment is used in connection with an acoustical or visual signal. A number of possible applications which have been tested in practice are described.