| environmental contaminants and biomarker responses in fish from the rio grande and its u.s. tributaries: spatial and temporal trends. | we collected, examined, and analyzed 368 fish of seven species from 10 sites on rivers of the rio grande basin (rgb) during late 1997 and early 1998 to document temporal and geographic trends in the concentrations of accumulative contaminants and to assess contaminant effects on the fish. sites were located on the mainstem of the rio grande and on the arroyo colorado and pecos river in texas (tx), new mexico (nm), and colorado. common carp (cyprinus carpio) and largemouth bass (micropterus salmo ... | 2005 | 16227080 |
| chemical contaminants, health indicators, and reproductive biomarker responses in fish from the colorado river and its tributaries. | common carp (cyprinus carpio), black bass (micropterus spp.), and channel catfish (ictalurus punctatus) were collected from 14 sites in the colorado river basin (crb) to document spatial trends in accumulative contaminants, health indicators, and reproductive biomarkers. organochlorine residues, 2,3,7,8-tetrachlorodibenzo-p-dioxin-like activity (tcdd-eq), and elemental contaminants were measured in composite samples of whole fish, grouped by species and gender, from each site. selenium (se) and ... | 2007 | 17418376 |
| prey capture behavior of native vs. nonnative fishes: a case study from the colorado river drainage basin (usa). | the colorado river drainage basin is home to a diverse but imperiled fish fauna; one putative challenge facing natives is competition with nonnatives. we examined fishes from colorado river tributaries to address the following questions: do natives and nonnatives from the same trophic guild consume the same prey items? will a given species alter its behavior when presented with different prey types? do different species procure the same prey types via similar feeding behaviors? roundtail chub (g ... | 2012 | 22514041 |
| polybrominated diphenyl ether metabolism in field collected fish from the gila river, arizona, usa--levels, possible sources, and patterns. | polybrominated diphenyl ethers (pbdes) were determined in fish collected from the gila river, arizona, a tributary of the colorado river in the lower part of the colorado river basin. fish samples were collected at sites on the gila river downstream from hayden, phoenix, and arlington, arizona in late summer 2003. the gila river is ephemeral upstream of the phoenix urban area due to dams and irrigation projects and has limited perennial flow downstream of phoenix due to wastewater and irrigation ... | 2013 | 22939514 |