チチブの穴への進入行動

概要

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Analysis of the hole-entering behavior of the secondary freshwater goby (Tridentiger obscurus) was made with tubular objects, and the sensory factors influencing behavioral events were investigated with regard to height and size of the object and lightness and darkness. Orientation and approach to objects, which were usually followed by subsequent entering, were found. The gobies preferred lower level objects and their entering behavior into objects which were placed at a height greater than 8cm, clearly decreased in frequency. They tended to enter larger objects rather than smaller objects, depending on their body size. The relative size (width of the head of the goby/diameter of the tubular objects) of the objects used in the experiments was estimated to be about 0.2 at maximum and 0.5 at minimum. No difference in the effect of lightness and darkness was found in the entering behavior to objects placed at the same height from the bottom.
社団法人日本動物学会の論文
1979-09-25