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标题：Water Mites in the Diet of Largemouth Bass
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作者：James R. Hodgson ; Carol J. Hodgson ; Jay Y. S. Hodgson 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2008
卷号：23
期号：2
页码：327-331
DOI：10.1080/02705060.2008.9664205
出版社：Taylor & Francis
摘要：Water mites (Hydracarina) are not consumed by some fish because of their distastefulness or toxicity. We obtained evidence that some individual largemouth bass (Micropterus salrnoides) specifically targeted mites as prey in a small unproductive and unexploited lake in Michigan's Upper Peninsula, USA. Bass stomachs that contained water mites tended to have high numbers of mites, with up to 780 mites in individual stomachs. Stronger evidence for foraging specialization was provided by repeated examination of stomach contents from recaptured bass; many bass contained water mites more often than would be expected by chance (one-sample t-test [H 0 =0], t = 3.54, P <0.0001). Also, there was no correlation between bass density and the percentage of bass consuming mites (r = 0.0183) further suggesting that foraging on mites was an individual response rather than a population strategy.