Mathematical modeling of preference intensity of Japanese Medaka Fish for instream water environment using fuzzy reasoning

Kazuaki Hiramatsu, Shiomi Shikasho, Shinji Fukuda

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

Fish behavior is essentially vague, and the behavioral responses to an environmental change vary widely both among individuals and depending on circumstances. This suggests it is necessary to positively consider the uncertainty when constructing preference intensity models to environmental factors. In this paper, the essential vagueness of the behavioral responses of Japanese Medaka Fish (Oryzias latipes) was positively taken into consideration in studying the preference intensities of the fish to three environmental factors: water depth, current velocity, and cover. The factors were quantified by laboratory open-channel experiments and a fuzzy reasoning technique. The Japanese Medaka Fish, a river fish, was selected to quantify preference intensities because it has become symbolic of the restoration of the countryside ecosystem in Japan. A simple genetic algorithm was introduced to search for an optimal structure of a fuzzy preference intensity model. The fuzzy preference intensity model was then verified by on-the-spot examinations. The results indicated that the two environmental factors of current velocity and cover obviously affect the environmental preference of Japanese Medaka Fish, and the fuzzy preference intensity model was a reasonable model to account for the actual behavioral responses of the fish.

元の言語英語
ホスト出版物のタイトルASAE Annual International Meeting 2004
ページ4091-4101
ページ数11
出版物ステータス出版済み - 2004
イベントASAE Annual International Meeting 2004 - Ottawa, ON, カナダ
継続期間: 8 1 20048 4 2004

その他

その他ASAE Annual International Meeting 2004
カナダ
Ottawa, ON
期間8/1/048/4/04

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Fish
Water
Ecosystems
Restoration
Genetic algorithms
Rivers
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Hiramatsu, K., Shikasho, S., & Fukuda, S. (2004). Mathematical modeling of preference intensity of Japanese Medaka Fish for instream water environment using fuzzy reasoning. : ASAE Annual International Meeting 2004 (pp. 4091-4101)

Mathematical modeling of preference intensity of Japanese Medaka Fish for instream water environment using fuzzy reasoning. / Hiramatsu, Kazuaki; Shikasho, Shiomi; Fukuda, Shinji.

ASAE Annual International Meeting 2004. 2004. p. 4091-4101.

研究成果: 著書/レポートタイプへの貢献会議での発言

Hiramatsu, K, Shikasho, S & Fukuda, S 2004, Mathematical modeling of preference intensity of Japanese Medaka Fish for instream water environment using fuzzy reasoning. : ASAE Annual International Meeting 2004. pp. 4091-4101, ASAE Annual International Meeting 2004, Ottawa, ON, カナダ, 8/1/04.
Hiramatsu, Kazuaki ; Shikasho, Shiomi ; Fukuda, Shinji. / Mathematical modeling of preference intensity of Japanese Medaka Fish for instream water environment using fuzzy reasoning. ASAE Annual International Meeting 2004. 2004. pp. 4091-4101
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