| 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 |
| spatiotemporal trends in fish mercury from a mine-dominated ecosystem: clear lake, california. | clear lake, california, usa, receives acid mine drainage and mercury (hg) from the sulphur bank mercury mine, a u.s. environmental protection agency (u.s. epa) superfund site that was active intermittently from 1873 to 1957 and partially remediated in 1992. mercury concentrations were analyzed primarily in four species of clear lake fishes: inland silversides (menidia beryllina, planktivore), common carp (cyprinus carpio, benthic scavenger/omnivore), channel catfish (ictalurus punctatus, benthic ... | 2008 | 19475924 |
| mercury in sport fish from the sacramento-san joaquin delta region, california, usa. | total mercury (hg) concentrations were determined in fillet tissue of sport fish captured in the sacramento-san joaquin river delta and surrounding tributaries, a region particularly impacted by historic gold and mercury mining activity. in 1999 and 2000, mercury concentrations were measured in 767 samples from ten fish species. largemouth bass (micropterus salmoides), the primary target species, exhibited a median hg concentration of 0.53 mug g(-1) (n=406). only 23 largemouth bass (6%) were bel ... | 2008 | 18063015 |
| essential and toxic metals in nine fish species for human consumption from two coastal lagoons in the eastern gulf of california. | with the aim of knowing concentrations of cd, cu, fe, mn, pb and zn; percentage of daily mineral intake (pmi) for essential elements and percentage of weekly intake (pwi) of toxic metals in commercial fish from 2 coastal lagoons in the eastern gulf of california, analyses were carried out in 9 species. highest values of cd were detected in the liver of the sharks sphyrna lewini and carcharhinus leucas, pb was mostly detected in the liver of s. lewini; cu and mn in the liver and gills of the mull ... | 2007 | 17680479 |
| rotenone formulation fate in lake davis following the 2007 treatment. | in september 2007, lake davis (near portola, california) was treated by the california department of fish and game with cft legumine, a rotenone formulation, to eradicate the invasive northern pike (esox lucius). the objective of this report is to describe the fate of the five major formulation constituents-rotenone, rotenolone, methyl pyrrolidone (mp), diethylene glycol monethyl ether (degee), and fennedefo 99-in water, sediment, and brown bullhead catfish (ameiurus nebulosus; a rotenone-resist ... | 2012 | 22407799 |