An experimental analysis of frequency-dependent predation (switching) in the 15-spined stickleback, Spinachia spinachia

作者: R.N. Hughes , M.I. Croy

DOI: 10.2307/5365

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摘要: Fifteen-spined sticklebacks were fed successively changing proportions of contrasted prey, either Gammarus and Artemia or Chaoborus Artemia, in a series experiments designed to identify factors contributing frequency-dependent predation (switching). In all experiments, fish showed the sigmoid response relative abundances typical switching. The time-lag order 30 min (length single trial) but, apart from this lag, responses independent whether previous frequency particular prey item which had been exposed was higher lower than current

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