Summary
Effects of standing and running water on the predatory efficiency of the larvivorous fish Gambusia affinis was tested at 6 different current speed: 0.0, 0.8, 2.4, 4.5, 8.5 and 10.2 ml/sec. G. affinis predated 25 Anopheles stephansi or 21 Culex fatigans (IV instar) during the test period of 10 hours. The predatory efficiency of G. affinis decreased remarkably to about 60% and thereafter gradually to about 30% in aquaria containing running water at the speed of 2.4 and 10.2 ml/sec, respectively.
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Reddy, S.R., Pandian, T.J. Effect of running water on the predatory efficiency of the larvivorous fish Gambusia affinis . Oecologia 16, 253–256 (1974). https://doi.org/10.1007/BF00345887
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DOI: https://doi.org/10.1007/BF00345887