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Modeling the preference of ayu (Plecoglossus altivelis) for underwater sounds to determine the migration path in a river

Author

Listed:
  • Febrina, Rina
  • Sekine, Masahiko
  • Noguchi, Hiroyuki
  • Yamamoto, Koichi
  • Kanno, Ariyo
  • Higuchi, Takaya
  • Imai, Tsuyoshi

Abstract

Water sounds are believed to be important in triggering the upriver ascent behavior of migratory fish species. Modeling the effect of underwater sound on fish preference represents a promising technique to determine migratory paths for the comprehensive analysis of river habitat suitability. In this study, we aimed to determine the preference and weight of underwater sounds by laboratory experiments using adult and juvenile ayu (Plecoglossus altivelis). A watercourse with an underwater speaker installed at one end was used for the experiments. Sound was emitted from the speaker at different sound pressure levels. The sound sources included pure tones (100Hz, 200Hz, 400Hz, and 800Hz), white noise, recorded sound from a weir on the Fushino River, and recorded sound at a fish ladder on the Misumi River (Japan). The results showed that juvenile and adult ayu avoided the pure sound of 100Hz and recorded sound of the Fushino River weir. In contrast, both adults and juveniles preferred the pure sound of 200Hz and recorded sound of the fish ladder. Moreover, by comparing the obtained quantitative preference parameters for sounds, we found that adult ayu expressed higher preference for sound than juveniles. We designed a procedure to calculate sound preference and built it into our fish behavior simulation model on geographic information system (GIS) software. We believe that the model could successfully reproduce observed fish migration behavior in rivers. This technique could be used for designing an underwater soundscape to attract fish to the entrances of fish ladders or to keep fish away from hydropower plants.

Suggested Citation

  • Febrina, Rina & Sekine, Masahiko & Noguchi, Hiroyuki & Yamamoto, Koichi & Kanno, Ariyo & Higuchi, Takaya & Imai, Tsuyoshi, 2015. "Modeling the preference of ayu (Plecoglossus altivelis) for underwater sounds to determine the migration path in a river," Ecological Modelling, Elsevier, vol. 299(C), pages 102-113.
    • Handle: RePEc:eee:ecomod:v:299:y:2015:i:c:p:102-113
    DOI: 10.1016/j.ecolmodel.2014.12.010
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    References listed on IDEAS

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    1. Fukuda, Shinji & Hiramatsu, Kazuaki, 2008. "Prediction ability and sensitivity of artificial intelligence-based habitat preference models for predicting spatial distribution of Japanese medaka (Oryzias latipes)," Ecological Modelling, Elsevier, vol. 215(4), pages 301-313.
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