171 research outputs found

    Book Reviews

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    Monitoring cryptic amphibians and reptiles in a Florida state park

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    We monitored cryptic herpetofauna at Savannas Preserve State Park, Florida, by combining artificial cover counts with a quantitative paradigm for constructing and calculating population indices. Weekly indices were calculated from two consecutive days of data collection each week for 7 months from mid-winter to mid-summer in three habitats. Seventeen species were observed at least once, and time trends using index values were followed for six species. Among these, abundance and seasonal pattern information were obtained for an exotic species (greenhouse frog) and a species identified by the Florida Committee on Rare and Endangered Plants and Animals as threatened (Florida scrub lizard). We identified winter as the optimal time in this area to monitor populations for conducting annual assessments. This combined observation and indexing approach could provide managers or researchers with an economical means to quantitatively index population trends for multiple cryptic herpetofauna species simultaneously. Using artificial cover to sample within a population indexing design can be generalized beyond monitoring herpetofauna. Other forms of artificial cover that can be used as observation stations include aquatic artificial substrates, artificial tree cavities, artificial reefs, and other artificial aquatic structures and artificial sea grass units, among many others, and a wide range of taxa are suitable for population monitoring using artificial cover as observation stations in the approach we present, including insects, soil invertebrates, micro and macro aquatic invertebrates, fish, crustaceans, and small mammals

    Case Report: Signal Drop on MRA Imaging of the Internal Carotid Artery after Neuroform Stent Placement

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    Magnetic resonance angiography (MRA) is an important tool in evaluating the patency of vessels which have previously been stented. Neuroform stents (Boston Scientific, Natick, MA, U.S.A.) are utilized to provide a scaffold across the neck of an aneurysm. These stents are synthesized from Nitinol (nickel and titanium) and thus cause minimal distortion upon imaging with MRA. Patients who have undergone Neuroform stent assisted coiling of aneurysms are routinely followed with MRA to delineate stenosis of the stented segment of vessel as well as recurrence of the aneurysms. While numerous reports show that Neuroform stents do not lead to MRA imaging artifact, we report of a case where the utilization of the Neuroform stent led to a signal drop out at the site of the stent upon evaluation with MRA and thus led to further invasive radiological procedures

    Genome-Based Microsatellite Development in the Culex pipiens Complex and Comparative Microsatellite Frequency with Aedes aegypti and Anopheles gambiae

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    Mosquitoes in the Culex pipiens complex are among the most medically important vectors for human disease worldwide and include major vectors for lymphatic filariasis and West Nile virus transmission. However, detailed genetic studies in the complex are limited by the number of genetic markers available. Here, we describe methods for the rapid and efficient identification and development of single locus, highly polymorphic microsatellite markers for Cx. pipiens complex mosquitoes via in silico screening of the Cx. quinquefasciatus genome sequence.Six lab colonies representing four Cx. pipiens and two Cx. quinquefasciatus populations were utilized for preliminary assessment of 38 putative loci identified within 16 Cx. quinquefasciatus supercontig assemblies (CpipJ1) containing previously mapped genetic marker sequences. We identified and validated 12 new microsatellite markers distributed across all three linkage groups that amplify consistently among strains representing the complex. We also developed four groups of 3-5 microsatellite loci each for multiplex-ready PCR. Field collections from three cities in Indiana were used to assess the multiplex groups for their application to natural populations. All were highly polymorphic (Mean  = 13.0 alleles) per locus and reflected high polymorphism information content (PIC) (Mean  = 0.701). Pairwise F(ST) indicated population structuring between Terre Haute and Fort Wayne and between Terre Haute and Indianapolis, but not between Fort Wayne and Indianapolis. In addition, we performed whole genome comparisons of microsatellite motifs and abundance between Cx. quinquefasciatus and the primary vectors for dengue virus and malaria parasites, Aedes aegypti and Anopheles gambiae, respectively.We demonstrate a systematic approach for isolation and validation of microsatellites for the Cx. pipiens complex by direct screen of the Cx. quinquefasciatus genome supercontig assemblies. The genome density of microsatellites is greater in Cx. quinquefasciatus (0.26%) than in Ae. aegypti (0.14%), but considerably lower than in An. gambiae (0.77%)

    Natural Resources Research Institute Technical Report

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    The eight data files (seven spreadsheets and one zipped folder) mentioned in the report (Appendices B, C, E, and F) are attached to this record along with the PDF file of the report. The zipped folder contains hundreds of .jpg, .las, .pdf, .tfd, and .xls files, totaling 3.24GB of data

    VectorBase: a home for invertebrate vectors of human pathogens

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    VectorBase () is a web-accessible data repository for information about invertebrate vectors of human pathogens. VectorBase annotates and maintains vector genomes providing an integrated resource for the research community. Currently, VectorBase contains genome information for two organisms: Anopheles gambiae, a vector for the Plasmodium protozoan agent causing malaria, and Aedes aegypti, a vector for the flaviviral agents causing Yellow fever and Dengue fever
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