| mercury in sediment and fish from north mississippi lakes. | sediments and/or fish were collected from sardis, enid and grenada lakes, which are located in three different watersheds in north mississippi, in order to assess mercury contamination. the mean total mercury concentration in sediments from enid lake in 1997 was 0.154 mg hg/kg, while 1998 sediment concentrations in sardis, enid and grenada lakes were 0.112, 0.088 and 0.133 mg hg/kg, respectively. sediment mercury concentrations in 1999 were similar in all three lakes but, generally lower than 19 ... | 2001 | 11272915 |
| fish tissue quality in the lower mississippi river and health risks from fish consumption. | between 1990 and 1994, samples of three shellfish species (i.e. blue crab, callinectes sapidus;crayfish, procambarus acutis; and river shrimp, macrobrachium ohionii) and 16 fish species and were collected at six sites along the lower mississippi river by the louisiana department of environmental quality, office of water resources in coordination with the us environmental protection agency. the fish species included: bigmouth buffalo (ictiobus cyanellus); blue catfish (ictalurus furcatus); carp ( ... | 2003 | 12526903 |
| an asian origin of virulent aeromonas hydrophila responsible for disease epidemics in united states-farmed catfish. | since 2009, catfish farming in the southeastern united states has been severely impacted by a highly virulent and clonal population of aeromonas hydrophila causing motile aeromonas septicemia (mas) in catfish. the possible origin of this newly emerged highly virulent a. hydrophila strain is unknown. in this study, we show using whole-genome sequencing and comparative genomics that a. hydrophila isolates from diseased grass carp in china and catfish in the united states have highly similar genome ... | 2014 | 24895303 |
| spring viremia of carp virus in minnehaha creek, minnesota. | spring viremia of carp virus (svcv) causes a highly contagious and serious disease of freshwater cyprinid fishes, generating significant economic and ecological impacts throughout the world. the svcv is therefore listed as a notifiable pathogen by the international organization for animal health. in june 2011, a significant mortality event of wild common carp cyprinus carpio occurred in minnehaha creek near its confluence with mississippi river pool 2 in minneapolis, minnesota. clinical signs of ... | 2012 | 23072656 |
| contaminant concentrations in asian carps, invasive species in the mississippi and illinois rivers. | populations of invasive fishes quickly reach extremely high biomass. before control methods can be applied, however, an understanding of the contaminant loads of these invaders carry is needed. we investigated differences in concentrations of selected elements in two invasive carp species as a function of sampling site, fish species, length and trophic differences using stable isotopes (delta (15)n, delta (13)c). fish were collected from three different sites, the illinois river near havana, ill ... | 2009 | 18850294 |
| validation of edna surveillance sensitivity for detection of asian carps in controlled and field experiments. | in many north american rivers, populations of multiple species of non-native cyprinid fishes are present, including black carp (mylpharyngodon piceus), grass carp (ctenopharyngodon idella), bighead carp (hypophthalmichthys nobilis), silver carp (hypophthalmichthys molitrix), common carp (cyprinus carpio), and goldfish (carassius auratus). all six of these species are found in the mississippi river basin and tracking their invasion has proven difficult, particularly where abundance is low. knowle ... | 2013 | 23472178 |
| aquatic nuisance species in the great lakes and mississippi river basin-a risk assessment in support of glmris. | the u.s. army corps of engineers is conducting the great lakes and mississippi river interbasin study to identify the highest risk aquatic nuisance species currently established in either the mississippi river basin or the great lakes basin and prevent their movement into a new basin. the great lakes and mississippi river interbasin study focuses specifically on aquatic nuisance species movement through the chicago area waterway system, a multi-use waterway connecting the two basins. in support ... | 2017 | 27734087 |
| lactococcosis in silver carp. | an adult silver carp hypophthalmichthys molitrix with a focally extensive skin lesion near the caudal peduncle and mild iridial hemorrhage was submitted to the aquatic research and diagnostic laboratory (ardl) in stoneville, mississippi, as part of a fish kill investigation. touch impressions of this musculoskeletal lesion revealed small cocci (∼1 μm) in pairs or chains within an inflammatory milieu. a pure gram-positive cocci isolate was obtained from the brain, while cultures of the kidney and ... | 2014 | 24689953 |
| using structured expert judgment to assess invasive species prevention: asian carp and the mississippi-great lakes hydrologic connection. | recently, authors have theorized that invasive species prevention is more cost-effective than control in protecting ecosystem services. however, quantification of the effectiveness of prevention is rare because experiments at field scales are expensive or infeasible. we therefore used structured expert judgment to quantify the efficacy of 17 proposed strategies to prevent asian carp invasion of the laurentian great lakes via the hydrologic connection between the mississippi and great lakes water ... | 2014 | 24467555 |
| fish gut microbiota analysis differentiates physiology and behavior of invasive asian carp and indigenous american fish. | gut microbiota of invasive asian silver carp (svcp) and indigenous planktivorous gizzard shad (gzsd) in mississippi river basin were compared using 16s rrna gene pyrosequencing. analysis of more than 440 000 quality-filtered sequences obtained from the foregut and hindgut of gzsd and svcp revealed high microbial diversity in these samples. gzsd hindgut (gzsd_h) samples (n=23) with >7000 operational taxonomy units (otus) exhibited the highest alpha-diversity indices followed by svcp foregut (n=15 ... | 2014 | 24132079 |
| perfluorinated compounds in common carp (cyprinus carpio) fillets from the upper mississippi river. | ten different perfluoroalkyl acids (pfaas), including perfluooctane sulfonate (pfos), were measured in 30 common carp (cyprinus carpio) fillets collected from three sites on the upper mississippi river in minnesota in an effort to evaluate the potential impact of pfaa emissions in this area. samples upstream of the city of st. cloud (reference site) had median pfos concentrations of 8.1 ng/g wet weight (ng/g wet wt), but median levels increased significantly downstream in the minneapolis-st. pau ... | 2008 | 18439677 |
| concentrations of arsenic, cadmium, copper, lead, selenium, and zinc in fish from the mississippi river basin, 1995. | fish were collected in late 1995 from 34 national contaminant biomonitoring program (ncbp) stations and 12 national water quality assessment program (nawqa) stations in the mississippi river basin (mrb), and in late 1996 from a reference site in west virginia. the ncbp sites represented key points (dams, tributaries, etc.) in the largest rivers of the mrb. the nawqa sites were typically on smaller rivers and were selected to represent dominant land uses in their watersheds. the west virginia sit ... | 2004 | 15887377 |
| invasive carp in the mississippi river basin. | | 2001 | 11424944 |
| confocal microscopy as a useful approach to describe gill rakers of asian species of carp and native filter-feeding fishes of the upper mississippi river system. | to better understand potential diet overlap among exotic asian species of carp and native species of filter-feeding fishes of the upper mississippi river system, microscopy was used to document morphological differences in the gill rakers. analysing samples first with light microscopy and subsequently with confocal microscopy, the three-dimensional structure of gill rakers in hypophthalmichthys molitrix, hypophthalmichthys nobilis and dorosoma cepedianum was more thoroughly described and illustr ... | 2014 | 25141916 |
| diagnostic snps reveal widespread introgressive hybridization between introduced bighead and silver carp in the mississippi river basin. | hybridization among conspecifics in native and introduced habitats has important implications for biological invasions in new ecosystems. bighead (hypophthalmichthys nobilis) and silver carp (h. molitrix) are genetically isolated and occur in sympatry within their native range. following their introduction to north america, however, introgressant hybrids have been reported throughout their expanded range within the mississippi river basin (mrb). the extent of introgression, both spatially and ge ... | 2015 | 26096550 |
| elements of concern in fillets of bighead and silver carp from the illinois river, illinois. | efforts to control invasive bighead (hypophthalmichthys nobilis) and silver carp (h. molitrix) may include harvest for human consumption. we measured concentrations of arsenic (as), mercury (hg), and selenium (se) in fillets from silver and bighead carp collected from the lower illinois river, illinois, usa, to determine whether concentrations were of health concern and differed by species, size, and location. concentrations of total as were below detection limits in most bighead (92%) and silve ... | 2014 | 24300421 |
| restriction site-associated dna sequencing generates high-quality single nucleotide polymorphisms for assessing hybridization between bighead and silver carp in the united states and china. | bighead carp (hypophthalmichthys nobilis) and silver carp (h. molitrix) are invasive species and listed as us federally injurious species under the lacy act. they have established populations in much of the mississippi river basin (mrb; mississippi, illinois, and missouri rivers) and are capable of producing fertile hybrids and complex introgression. characterizing the composition of this admixture requires a large set of high-quality, evolutionarily conserved, diagnostic genetic markers to aid ... | 2014 | 23957862 |