Apparatus for detecting allurement property of fish larvae bait

Abstract

A food attracting checking device of infant fish attracting food, comprising circular metal fish limiting circle with a crossing structure in the middle, suspending a food attractant ball with a suspending line in the center, the around of the fish limiting circle is supported by supporting cradle. The above said food attractant ball is usually the absorbent gauze with porous plastic packed and filled with attracting material, or the mixture of attracting material and medium, equipping a hemispherical shell which two of then can be locked together and with pores equipped on the surface out of the attracting food ball, the above said limiting fish circle can be designed as a spherical aquarium with net cover, and the fish limiting circle is an adjustable shrink-fit container structure to meet demand of different species and size fish. The invention is characterized by the rational structure, low cost, convenient and accurate detection and comparison of the various attracting property of the attracting material.

Description

technical field [0001] The invention relates to a device for measuring the behavioral response of larvae and juveniles to the presence of a certain substance—a food-attractive detector for larvae and juvenile fish-attractive substances. Background technique [0002] The screening of effective food-attractant substances in larvae and juvenile fish is one of the key issues in the development of fish micropellet feed. There are many typical methods for the research on the chemical perception of fish ingestion, ① electrophysiological method; ② maze method; ③ ball touching method; Among them, the electrophysiological method judges by recording the current changes of the olfactory nerve and gustatory nerve when there is the presence or absence of the attractant substance. The number of larvae and juveniles within the range, or the behavior of larvae and juveniles within the set range can be analyzed to finally achieve the purpose of comparing and determining the attractant substa...

AI Technical Summary

Problems solved by technology

However, some of these methods are too complicated to be suitable for actual production; the size of some equipment cannot be flexibly adapted to the needs of larval fish research; some evaluation methods are too strongly affected by subjectivity, and the statistical results are often questioned

The behavioral characteristics of larvae and juvenile fish in the presence of attractant substances are not exactly the same as those of juvenile and adult fish. Therefore, the above methods and devices cannot meet the needs

Currently, there is a lack of universal, reliable, flexible, and convenient detection tools and methods for the screening of effective attractant substances in larvae and juveniles.

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