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Any of several large cyprinid freshwater fishes of the genus Ptychocheilus of western North America.
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Development and intensity dependence of Ornithodiplostomum ptychocheilus metacercariae in fathead minnows (Pimephales promelas).
Colorado pikeminnow Ptychocheilus lucius from the lower Colorado River) in North America are most numerous in the West where reservoir construction, non-native fish introductions and water withdrawals altered habitat and established new predators and competitors for native fishes (Minckley and Douglas, 1991).
Nombre en ingles Nombre cientifico Nombre en espanol Bonytail chub Gila elegans * Cacho cola de hueso Razorback sucker Xyrauchen texanus * Matalote jorobado Colorado pike minnow Ptychocheilus lucius India del Colorado Ladyfish Elops afinis Machete Striped mullet Mugil cephalus Lisa
Changes in minnow, Pimephales promelas Rafinesque, schooling behavior associated with infections of brain-encysted larvae of the fluke, Ornithodiplostomum ptychocheilus.
Predation rate by northern squawfish, Ptychocheilus oregonensis, and non-native predators also increases with temperature (Vigg et al.
Life history of the Colorado squawfish, Ptychocheilus lucius, and the Colorado chub, Gila robusta, in the Green River in Dinosaur National Monument, 1964-1966.
The Colorado pikeminnow Ptychocheilus lucius is a warm-water, potamodromous, picscivore and is the largest cyprinid in North America.
Digestion rates and gastric evacuation times in relation to temperature of the Sacramento squawfish, Ptychocheilus grandis.
Three other endangered species of fish inhabit the Colorado River Basin, the humpback chub Gila cypha, Colorado pikeminnow Ptychocheilus lucius, and razorback sucker Xyrauchen texanus (United States Fish and Wildlife Service, 2002b, 2002c, 2002d).
Although Gila (Vanicek and Kramer, 1969), Notemigonus (Johnston and Page, 1992), and Ptychocheilus (Vanicek and Kramer, 1969) are non-territorial, species of Rhinichthys (Raney, 1940, 1958; Mueller, 1984), Pteronotropis (Albanese, 2000; C.
Bonytails of all sizes would be susceptible to predation by larger-bodied predators including the nonnative northern pike Esox lucius or the native Colorado pikeminnow Ptychocheilus lucius.