Introduced Flathead Catfish Consumptive Demand on Native Fishes of the Upper Gila River, New Mexico
作者： Skyler C. Hedden , Keith B. Gido , James E. Whitney
DOI: 10.1080/02755947.2015.1111280
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摘要: AbstractPredation by nonnative fish is often cited as a leading cause of declining native populations, but quantifying these negative interactions difficult. Bioenergetics modeling provides tool to estimate consumptive demand species and identify those that pose the greatest threats biota. We used bioenergetics Flathead Catfish Pylodictis olivaris on fishes in upper Gila River, New Mexico, across an elevational gradient. Model results were coupled with measured densities size structure well water temperatures, predict its predatory threat. Potential consumption was highest at lower elevation sites because higher actual mid-elevation prevalence larger individuals there. annual our nine sampling ranged from 0.0 3.1...
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