Stream drift feeding and microhabitat competition of invasive smallmouth bass Micropterus dolomieu, native Japanese dace Tribolodon hakonensis and pale chub Opsariichthys platypus in the Nogu River, Japan
Foraging behavior and microhabitat use of native Japanese dace, pale chub, and invasive smallmouth bass were studied in the Nogu River, Nagano, Japan. Chub, dace and smallmouth bass all used drift feeding as their dominant foraging behavior. Chub drift fed most frequently, followed by dace, and smallmouth bass drift fed significantly less frequently than both native species. Chub and dace utilized microhabitat that had significantly higher flow velocity than smallmouth bass. However, smaller chub and dace were found in areas with lower flow velocity compared to larger individuals. Prey resource competition between smallmouth bass and native cyprinids, especially smaller individuals, is suspected due to similar feeding methods and microhabitat use.
KeywordsInterspecific competition Foraging method Foraging rate Smallmouth bass Cyprinids Invasion
We thank the Hokuan-Chubu Fisheries Cooperation for their agreement to allow observation and sampling of fish in the Nogu River. We are grateful to Narumi Kohno and Yoshihiro Sawamoto (Nagano Prefecture Fisheries Experimental Station) for their advice and helpful background information. We are grateful to Hideyuki Ida for his advice in statistical analysis, and Kurt Fausch and Taiga Yodo for their helpful comments. We are also grateful for the detailed comments provided by two anonymous reviews. This project was funded by the Japanese Ministry of Land, Infrastructure, Transport, and Tourism.
Compliance with ethical standards
All applicable international, national, and/or institutional guidelines for the care and use of animals were followed (IACUC protocol No. Y72A01–1-102).
Conflict of interest
The authors declare that they have no conflict of interest.
- Arrington DA, Winemiller KO, Loftus WF, Akin S (2002) How often do fishes “run on empty”? Ecology 83(8):2145–2151Google Scholar
- Bain MB, Finn JT, Booke HE (1985) Quantifying stream substrate for habitat analysis studies. N Am J Fish Manag 5:499–506. https://doi.org/10.1577/1548-8659(1985)5<499:QSSFHA>2.0.CO;2 CrossRefGoogle Scholar
- Brown TG, Runciman B, Pollard S, Grant ASA, Bradford MJ (2009) Biological synopsis of smallmouth bass (Micropterus dolomieu). Can Manuscr Rep Fish Aquat Sci 2887:1–50Google Scholar
- Buynak GL, Gurzynski AJ, Mohr HW (1982) Comparison of the food habits of smallmouth bass (Micropterus dolomieui) at two stations on the Susquehanna River. J Pa Acad Sci 56(2):127–132Google Scholar
- Jackson DA (2002) Ecological effects of Micropterus introductions: the dark side of black bass. Am Fish Soc Symp 31:221–232Google Scholar
- Katano O, Hakoyama H, Matsuzaki SS (2015) Japanese inland fisheries and aquaculture: Status and trends. Freshwater Fisheries Ecology First edition: pp 231–240. https://doi.org/10.1002/9781118394380.ch20
- Kawanabe H, Mizuno N, Hosoya K (2002) Freshwater fishes of Japan. Yama-kei Publishers, Tokyo, Japan.719 pp (In Japanese)Google Scholar
- Koyama H, Nakamura K (1955) Census of cast-net fishing and analysis of the stock in Tribolodon hakonensis and Zacco platypus, Chikuma River, Nagano Prefecture. Bull Freshwater Fish Res Lab 4(1):1–16 In JapaneseGoogle Scholar
- Lewis WM, Heidinger RC, Kirk W, Chapman W, Johnson D (1974) Food intake of the largemouth bass. Trans Am Fish Soc 101(2):277–280. https://doi.org/10.1577/1548-8659(1974)103<277:FIOTLB>2.0.CO;2 CrossRefGoogle Scholar
- Nakamura K (1952) Environment, food habitat, spawning, development, growth, and fisheries of Zacco platypus in Chikuma River. Bull Freshwater Fish Lab 1(1):2–25 (In Japanese)Google Scholar
- Pinkas L, Oliphant S, Iverson ILK (1971) Food habits of albacore, bluefin tuna and bonito in California waters. Calif Fish Game 152:1–105Google Scholar
- Scott WB, Crossman EJ (1973) Freshwater fishes of Canada. Fish Res Board Can Bull 184:966Google Scholar
- Yodo T, Iguchi K (2004) Feeding habits of the alien species, smallmouth bass in the Nogu River, Central Japan. Suisanzoshoku 52(4):395–400. https://doi.org/10.11233/aquaculturesci1953.52.395 (In Japanese)CrossRefGoogle Scholar