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Ichthyological Research

, Volume 61, Issue 2, pp 159–164 | Cite as

The relationship between an introduced predator–prey pair, largemouth bass and bluegill, and the chlorophyll concentration in farm ponds

  • Hinako Noda
  • Atsushi MaruyamaEmail author
Short Report

Abstract

An empirical study was conducted on the effects of an introduced predator–prey pair, largemouth bass and bluegill, on pelagic productivity in 22 ponds in central Japan. In the univariate analysis, the effect of fish invasion on chlorophyll concentration was not evident, primarily because this effect was screened by the positive and negative effects of phosphorus availability and the pond area, respectively. A positive effect on chlorophyll concentration was detected in the best statistical model using nutrient availability and pond area as independent factors. Fish invasion decreased the relative biomass of crustaceans to rotifers. This study showed that the invasion of these exotic fishes affected the pelagic community in the pond.

Keywords

Alien species Exotic fish Phytoplankton production Top-down effect 

Notes

Acknowledgments

We are grateful to Mr Ryoichi Hinokio for his assistance during laboratory work. We would also like to thank Ms Mami Umemoto, Chie Sakaeyama, and Mai Katsube for their support in the field and the two anonymous reviewers for their constructive comments on our manuscript.

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Copyright information

© The Ichthyological Society of Japan 2013

Authors and Affiliations

  1. 1.Faculty of Science and TechnologyRyukoku UniversityOtsuJapan

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