| an introduced and a native vertebrate hybridize to form a genetic bridge to a second native species. | the genetic impacts of hybridization between native and introduced species are of considerable conservation concern, while the possibility of reticulate evolution affects our basic understanding of how species arise and shapes how we use genetic data to understand evolutionary diversification. by using mitochondrial nadh dehydrogenase subunit 2 (nd2) sequences and 467 amplified fragment-length polymorphism nuclear dna markers, we show that the introduced white sucker (catostomus commersoni) has ... | 2008 | 18658235 |
| infection by a black spot-causing species of uvulifer and associated opercular alterations in fishes from a high-desert stream in wyoming. | black spot is a common disease syndrome of freshwater fishes. this study provides information on the rank of density of the black spot agent and opercular bone alterations associated with at least one digenean, uvulifer sp., infecting native and non-native catostomids and cyprinids of the upper colorado river basin. we evaluated the density rank of pigmented metacercariae and associated alterations in the operculum of the bluehead sucker catostomus discobolus, flannelmouth sucker c. latipinnis, ... | 2007 | 18286809 |
| an occupancy-based quantification of the highly imperiled status of desert fishes of the southwestern united states. | desert fishes are some of the most imperiled vertebrates worldwide due to their low economic worth and because they compete with humans for water. an ecological complex of fishes, 2 suckers (catostomus latipinnis, catostomus discobolus) and a chub (gila robusta) (collectively managed as the so-called three species) are endemic to the u.s. colorado river basin, are affected by multiple stressors, and have allegedly declined dramatically. we built a series of occupancy models to determine relation ... | 2015 | 25900520 |