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Diel food utilization by woundfin, Plagopterus argentissimus, in Virgin River, Arizona

Citation

Greger, Paul D, and Deacon, James E, Diel food utilization by woundfin, Plagopterus argentissimus, in Virgin River, Arizona: .

Summary

Woundfin, Plagopterus argentissimus, fed predominantly on simuliid larvae during the day, and shifted to the larger Hydropsyche spp. at night. Ephemeropteran larvae were eaten nearly uniformly throughout the 24 hour period. Mean weight of food consumed varied from 20?40 mg per individual (0.7?2.5% body weight) throughout the 24 h period. Our estimated daily ration of about 8% body weight, at temperatures that varied between 15?25�C, is based upon our measure of mean gut contents over a 24h period, combined with intestinal evacuation rates suggested for other cyprinids in the literature. The relatively continuous feeding pattern suggests a foraging strategy that would minimize competition with other species for food during June, a period [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:12:57 MDT 2012

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Title Citation Diel food utilization by woundfin, Plagopterus argentissimus, in Virgin River, Arizona

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