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Thomas G Rosser, Neely R Alberson, Ethan T Woodyard, Fred L Cunningham, Linda M Pote, Matt J Griffin
Members of the genus Clinostomum Leidy, 1856, colloquially known as yellow grubs, are cosmopolitan parasites of piscivorous birds, freshwater snails, fish and amphibians. In the southeastern United States, piscivorous birds present a continuous challenge for producers of farm-raised catfish. Ciconiiform birds are common hosts of Clinostomum spp. in North America and are endemic on most commercial catfish operations. The great egret Ardea alba L. is an avian predator often found foraging on commercial catfish operations, but to date the trematode fauna of great egrets preying on catfish ponds remains mostly understudied...
January 2017: Systematic Parasitology
Lindsey McCrickard, Mariel Marlow, Julie L Self, Louise Francois Watkins, Kevin Chatham-Stephens, Jannifer Anderson, Sheryl Hand, Kathryn Taylor, Jennifer Hanson, Keiundria Patrick, Carolina Luquez, Janet Dykes, Suzanne R Kalb, Kaitlin Hoyt, John R Barr, Todd Crawford, Anthony Chambers, Brian Douthit, Robert Cox, Matt Craig, John Spurzem, Joseph Doherty, Michael Allswede, Paul Byers, Thomas Dobbs
No abstract text is available yet for this article.
January 6, 2017: MMWR. Morbidity and Mortality Weekly Report
Jun Wang, James T Lamer, Sarah Gaughan, Michael Wachholtz, Chenghui Wang, Guoqing Lu
Bighead carp (Hypophthalmichthys nobilis) and silver carp (Hypophthalmichthys molitrix), collectively called bigheaded carps, are invasive species in the Mississippi River Basin (MRB). Interspecific hybridization between bigheaded carps has been considered rare within their native rivers in China; however, it is prevalent in the MRB. We conducted de novo transcriptome analysis of pure and hybrid bigheaded carps and obtained 40,759 to 51,706 transcripts for pure, F1 hybrid, and backcross bigheaded carps. The search against protein databases resulted in 20,336-28,133 annotated transcripts (over 50% of the transcriptome) with over 13,000 transcripts mapped to 23 Gene Ontology biological processes and 127 KEGG metabolic pathways...
December 2016: Ecology and Evolution
William G Meikle, John J Adamczyk, Milagra Weiss, Ales Gregorc, Don R Johnson, Scott D Stewart, Jon Zawislak, Mark J Carroll, Gus M Lorenz
Imidacloprid is a neonicotinoid pesticide heavily used by the agricultural industry and shown to have negative impacts on honey bees above certain concentrations. We evaluated the effects of different imidacloprid concentrations in sugar syrup using cage and field studies, and across different environments. Honey bee colonies fed sublethal concentrations of imidicloprid (0, 5, 20 and 100 ppb) over 6 weeks in field trials at a desert site (Arizona), a site near intensive agriculture (Arkansas) and a site with little nearby agriculture but abundant natural forage (Mississippi) were monitored with respect to colony metrics, such as adult bee and brood population sizes, as well as pesticide residues...
2016: PloS One
Jessica A Hartshorn, Kevin D Chase, Larry D Galligan, John J Riggins, Fred M Stephen
Sirex nigricornis F. (Hymenoptera: Siricidae) is an innocuous pine-inhabiting woodwasp native to eastern North America, utilizing dead or dying pine trees as hosts. Although S. nigricornis F. does not cause economic damage, a closely related species, Sirex noctilio, was discovered in New York in 2004 and has continually spread throughout the northeastern United States and southern Canada, threatening the multi-billion-dollar pine timber industry of the southeastern United States and raising interest about potential interactions with native woodwasps and associated mortality agents...
December 2016: Environmental Entomology
Catherine E Raptis, Justin M Boucher, Stephan Pfister
Freshwater heat emissions from power plants with once-through cooling systems constitute one of many environmental pressures related to the thermoelectric power industry. The objective of this work was to obtain high resolution, operational characterization factors (CF) for the impact of heat emissions on ecosystem quality, and carry out a comprehensive, spatially, temporally and technologically differentiated damage-based environmental assessment of global freshwater thermal pollution. The aggregation of CFs on a watershed level results in 12...
December 23, 2016: Science of the Total Environment
Xue Feng, Xi Tan, Ebtihag O Alenzi, Pragya Rai, Jongwha Chang
Cancer screening tests are important tools to combat cancer-related morbidity and mortality. There is limited up-to-date research on spatial and temporal variations of colorectal and breast cancer screening in the United States.County-level data of cancer screening adherence rates were generated from 2008 to 2012 Behavioral Risk Factor Surveillance System. We performed the univariate local indicators for spatial analyses (LISA) for the geographic differences of screening adherence rate and the differential LISA for the change of screening adherence rate from 2008 to 2012...
December 2016: Medicine (Baltimore)
Rachel A Miller, Martin Wiedmann
: Select nontyphoidal Salmonella enterica (NTS) serotypes were recently found to encode the Salmonella cytolethal distending toxin (S-CDT), an important virulence factor for serotype Typhi, the causative agent of typhoid fever. Using a PCR-based assay, we determined that among 21 NTS serotypes causing the majority of food-borne salmonellosis cases in the United States, genes encoding S-CDT are conserved in isolates representing serotypes Javiana, Montevideo, and Oranienburg but that among serotype Mississippi isolates, the presence of S-CDT-encoding genes is clade associated...
December 20, 2016: MBio
Irena Stepanikova, Elizabeth H Baker, Zachary R Simoni, Aowen Zhu, Sarah B Rutland, Mario Sims, Larrell L Wilkinson
INTRODUCTION: African Americans, especially those in the South, suffer a disproportionate burden of obesity and are at high risk for perceived discrimination (PD). This study investigates the association between PD and weight status among African Americans and clarifies the role of perceived stress and health behaviors in this relationship. METHODS: Data came from the Jackson Heart Study, Examination 1 (2000-2004; analyses conducted in 2016 using Stata, version 14)...
January 2017: American Journal of Preventive Medicine
Alexis V Starr, Sibel Bargu, Kanchan Maiti, Ronald D DeLaune
Pesticides may enter water bodies in areas with a high proportion of agricultural land use through surface runoff, groundwater discharge, and erosion and thus negatively impact nontarget aquatic organisms. The herbicide atrazine is used extensively throughout the Midwest and enters the Mississippi River through surface runoff and groundwater discharge. The purpose of this study was to determine the extent of atrazine contamination in Louisiana's estuaries from Mississippi River water under different flow and nutrient regimes (spring and summer) and its effect on the biomass and oxygen production of the local phytoplankton community...
December 16, 2016: Archives of Environmental Contamination and Toxicology
Zinan Wang, Lori Moshman, Emily C Kraus, Blake E Wilson, Namoona Acharya, Rodrigo Diaz
The tawny crazy ant, Nylanderia fulva (Mayr) (Hymenoptera: Formicidae), has invaded states of the U.S. including Texas, Louisiana, Mississippi, Alabama, Florida, and Georgia. Native to South America, N. fulva is considered a pest in the U.S. capable of annoying homeowners and farmers, as well as displacing native ant species. As it continues to expand its range, there is a growing need to develop novel management techniques to control the pest and prevent further spread. Current management efforts rely heavily on chemical control, but these methods have not been successful...
December 15, 2016: Insects
Q E Phelps, R N Hupfeld, G W Whitledge
This study inferred that the majority of shovelnose sturgeon Scaphirhynchus platorynchus captured in the upper Mississippi River probably originated from locations outside the upper Mississippi River (Missouri River, middle Mississippi River); whereas, lake sturgeon Acipenser fulvescens exhibit infrequent movement outside of the upper Mississippi River, but may move throughout these interconnected large rivers at various life stages. By using pectoral fin-ray microchemistry (a non-lethal alternative to using otoliths), it is suggest that interjurisdictional cooperation will probably be needed to ensure sustainability of the S...
December 15, 2016: Journal of Fish Biology
Brandon Stamper, Waseem Gul, Murrell Godfrey, Shahbaz W Gul, Mahmoud A ElSohly
Continuing our studies for the analyses of drugs of abuse in municipal wastewater, a method was developed for the analysis of benzodiazepines in wastewater samples using liquid chromatography coupled with tandem mass spectrometry (LC-MS-MS). Ten benzodiazepines and metabolites were analyzed (structures were found), including alprazolam, α-OH-alprazolam (the primary urinary metabolite of alprazolam), chlordiazepoxide, flurazepam, 2-OH-ethylflurazepam (the primary urinary metabolite of flurazepam), 7-NH2-flunitrazepam, nordiazepam, oxazepam, temazepam and α-OH-triazolam (the primary urinary metabolite of triazolam) (representative chromatograms were found)...
December 15, 2016: Journal of Analytical Toxicology
R Keller Kopf, Casey Shaw, Paul Humphries
Small body size is generally correlated with r-selected life-history traits, including early maturation, short generation times, and rapid growth rates, that result in high population turnover and a reduced risk of extinction. Unlike other classes of vertebrates, however, small freshwater fishes appear to have an equal or greater risk of extinction than large fishes. We explored whether particular traits explain the International Union for Conservation of Nature (IUCN) Red List conservation status of small-bodied freshwater fishes from 4 temperate river basins: Murray-Darling, Australia; Danube, Europe; Mississippi-Missouri, North America; and the Rio Grande, North America...
December 15, 2016: Conservation Biology: the Journal of the Society for Conservation Biology
Matthew Jankowich, Beth Elston, Samuel K Evans, Wen-Chih Wu, Gaurav Choudhary
PURPOSE: Iron deficiency is prevalent in idiopathic pulmonary arterial hypertension (IPAH), but whether iron deficiency or ferritin levels are associated with pulmonary hypertension (PH) in the general population is unknown. METHODS: We performed a cross-sectional analysis of data on iron deficiency (exposure), and PH (pulmonary artery systolic pressure>40mmHg on echocardiogram) (outcome) on subjects with complete data on exposures and outcomes as well as covariates (n = 2,800) enrolled in the Jackson Heart Study, a longitudinal prospective observational cohort study of heart disease in African-Americans from Jackson, Mississippi...
2016: PloS One
Laura Dwyer-Lindgren, Amelia Bertozzi-Villa, Rebecca W Stubbs, Chloe Morozoff, Michael J Kutz, Chantal Huynh, Ryan M Barber, Katya A Shackelford, Johan P Mackenbach, Frank J van Lenthe, Abraham D Flaxman, Mohsen Naghavi, Ali H Mokdad, Christopher J L Murray
Importance: County-level patterns in mortality rates by cause have not been systematically described but are potentially useful for public health officials, clinicians, and researchers seeking to improve health and reduce geographic disparities. Objectives: To demonstrate the use of a novel method for county-level estimation and to estimate annual mortality rates by US county for 21 mutually exclusive causes of death from 1980 through 2014. Design, Setting, and Participants: Redistribution methods for garbage codes (implausible or insufficiently specific cause of death codes) and small area estimation methods (statistical methods for estimating rates in small subpopulations) were applied to death registration data from the National Vital Statistics System to estimate annual county-level mortality rates for 21 causes of death...
13, 2016: JAMA: the Journal of the American Medical Association
Michael Notaro, Michael Schummer, Yafang Zhong, Stephen Vavrus, Lena Van Den Elsen, John Coluccy, Christopher Hoving
Projected changes in the relative abundance and timing of autumn-winter migration are assessed for seven dabbling duck species across the Mississippi and Atlantic Flyways for the mid- and late 21st century. Species-specific observed relationships are established between cumulative weather severity in autumn-winter and duck population rate of change. Dynamically downscaled projections of weather severity are developed using a high-resolution regional climate model, interactively coupled to a one-dimensional lake model to represent the Great Lakes and associated lake-effect snowfall...
2016: PloS One
Hossam Abdelhamed, Seong Won Nho, Gokul Turaga, Michelle M Banes, Attila Karsi, Mark L Lawrence
Aeromonas hydrophila is a reemerging pathogen of channel catfish (Ictalurus punctatus); recent outbreaks from 2009 to 2014 have caused the loss of more than 12 million pounds of market size catfish in Alabama and Mississippi. Genome sequencing revealed a clonal group of A. hydrophila isolates with unique genetic and phenotypic features that is highly pathogenic in channel catfish. Comparison of the genome sequence of a representative catfish isolate (ML09-119) from this virulent clonal group with lower virulence A...
December 25, 2016: Veterinary Microbiology
Michael J Osland, Richard H Day, Courtney T Hall, Marisa D Brumfield, Jason L Dugas, William R Jones
Within the context of climate change, there is a pressing need to better understand the ecological implications of changes in the frequency and intensity of climate extremes. Along subtropical coasts, less frequent and warmer freeze events are expected to permit freeze-sensitive mangrove forests to expand poleward and displace freeze-tolerant salt marshes. Here, our aim was to better understand the drivers of poleward mangrove migration by quantifying spatiotemporal patterns in mangrove range expansion and contraction across land-ocean temperature gradients...
October 17, 2016: Ecology
Sarah M Elliott, David D VanderMeulen
Anthropogenic chemicals and their potential for adverse biological effects raise concern for aquatic ecosystem health in protected areas. During 2013-15, surface waters of four Midwestern United States national parks were sampled and analyzed for wastewater indicators, pharmaceuticals, personal care products, and pesticides. More chemicals and higher concentrations were detected at the two parks with greater urban influences (Mississippi National River and Recreation Area and Indiana Dunes National Lakeshore) than at the two more remote parks (Apostle Islands National Lakeshore and Isle Royale National Park)...
February 1, 2017: Science of the Total Environment
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