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Immunology and Infectious Disease Commons™
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- Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications (13)
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- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (3)
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Articles 31 - 59 of 59
Full-Text Articles in Immunology and Infectious Disease
The Minor Envelope Glycoproteins Gp2a And Gp4 Of Porcine Reproductive And Respiratory Syndrome Virus Interact With The Receptor Cd163, Phani B. Das, Phat X. Dinh, Israrul H. Ansari, Marcelo De Lima, Fernando A. Osorio, Asit K. Pattnaik
The Minor Envelope Glycoproteins Gp2a And Gp4 Of Porcine Reproductive And Respiratory Syndrome Virus Interact With The Receptor Cd163, Phani B. Das, Phat X. Dinh, Israrul H. Ansari, Marcelo De Lima, Fernando A. Osorio, Asit K. Pattnaik
School of Veterinary and Biomedical Sciences: Faculty Publications
Porcine reproductive and respiratory syndrome virus (PRRSV) contains the major glycoprotein, GP5, as well as three other minor glycoproteins, namely, GP2a, GP3, and GP4, on the virion envelope, all of which are required for generation of infectious virions. To study their interactions with each other and with the cellular receptor for PRRSV, we have cloned each of the viral glycoproteins and CD163 receptor in expression vectors and examined their expression and interaction with each other in transfected cells by coimmunoprecipitation (co-IP) assay using monospecific antibodies. Our results show that a strong interaction exists between the GP4 and GP5 proteins, although …
A New Species Of Trichostrongyloid In African Buffalo (Syncerus Caffer) (Artiodactyla: Bovinae) From Uganda, Eric P. Hoberg, Arthur Abrams, Patricia A. Pilitt
A New Species Of Trichostrongyloid In African Buffalo (Syncerus Caffer) (Artiodactyla: Bovinae) From Uganda, Eric P. Hoberg, Arthur Abrams, Patricia A. Pilitt
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Africanastrongylus giganticus n. sp. is described based on large ostertagiine nematodes occurring in the abomasum of African buffalo, Syncerus caffer, from Uganda; this represents the second species recognized in the genus. Specimens of A. giganticus are characterized by large size (15-19 mm in total length), a strongly tapering synlophe in the cervical region, and a great number of ridges at all levels of the body (maximum 72 attained in the third quarter); numbers of ridges exceed that reported among any known genera and species of the Ostertagiinae. We refer A. giganticus to this genus based on a strongly tapering …
Interconversion Of The Specificities Of Human Lysosomal Enzymes, Ivan B. Tomasic
Interconversion Of The Specificities Of Human Lysosomal Enzymes, Ivan B. Tomasic
Masters Theses 1911 - February 2014
Fabry disease (FD) is an X-linked recessive lysosomal storage disorder (LSD) known to affect approximately 1 in every 40,000 males, and a smaller number of females. FD results from a deficiency of functional α-galactosidase (α-GAL), which leads to the accumulation of terminally α-galactosylated substrates in the lysosome. The predominant treatment is Enzyme Replacement Therapy (ERT), requiring the regular infusion of recombinant human α-GAL. More than half of individuals receiving ERT experience a range of adverse infusion reactions, and it has been reported that as many as 88% of patients receiving ERT develop neutralizing IgG antibodies against the drug.
In aim …
An Epitope From Acanthamoeba Castellanii That Cross-React With Proteolipid Protein 139-151-Reactive T Cells Induces Autoimmune Encephalomyelitis In Sjl Mice, Chandirasegaran Massilamany, David Steffan, Jay Reddy
An Epitope From Acanthamoeba Castellanii That Cross-React With Proteolipid Protein 139-151-Reactive T Cells Induces Autoimmune Encephalomyelitis In Sjl Mice, Chandirasegaran Massilamany, David Steffan, Jay Reddy
Jay Reddy Publications
We report here that an epitope (aa, 83-95) derived from Acanthamoeba castellanii (ACA) induces clinical signs of experimental autoimmune encephalomyelitis (EAE) in SJL/J mice reminiscent of the disease induced with myelin proteolipid protein (PLP) 139-151. By using IAs/tetramers, we demonstrate that both ACA 83-95 and PLP 139-151 generate antigen-specific cross-reactive CD4 T cells and the T cells secrete identical patterns of cytokines and induce EAE with a similar severity. These results may provide insights into the pathogenesis of multiple sclerosis and ACA-induced granulomatous encephalitis.
Method For Identification Of Virulence Determinants, Raul G. Barletta, Beth Harris
Method For Identification Of Virulence Determinants, Raul G. Barletta, Beth Harris
School of Veterinary and Biomedical Sciences: Faculty Publications
Disclosed are methods for the determination of virulence determinants in bacteria and in particular bacteria of the genus Mycobacterium. Also disclosed are compositions and methods for stimulating an immune response in an animal using bacteria and virulence determinants identified by the methods of the present invention.
Memory Cd8+ T Cell Differentiation, Joshua J. Obar, Leo Lefrancois
Memory Cd8+ T Cell Differentiation, Joshua J. Obar, Leo Lefrancois
UCHC Articles - Research
In response to infection or effective vaccination, naive antigen-specific CD8+ T cells undergo a dramatic highly orchestrated activation process. Initial encounter with an appropriately activated antigen-presenting cell leads to blastogenesis and an exponential increase in antigen-specific CD8+ T cell numbers. Simultaneously, a dynamic differentiation process occurs, resulting in formation of both primary effector and long-lived memory cells. Current findings have emphasized the heterogeneity of effector and memory cell populations with the description of multiple cellular subsets based on phenotype, function, and anatomic location. Yet, only recently have we begun to dissect the underlying factors mediating the temporal control of the …
An Intervention To Prevent Symptoms Associated With Hepatitis C: A Pilot Study, Donna M. Zucker
An Intervention To Prevent Symptoms Associated With Hepatitis C: A Pilot Study, Donna M. Zucker
Elaine Marieb College of Nursing Faculty Publication Series
The objectives of this study were to (a) pilot test instruments measuring fatigue and quality of life (QOL); (b) pilot test an exercise intervention; and (c) estimate the effect size of this intervention relative to completion of combination therapy, fatigue, QOL, and walking distance in 20 patients with chronic hepatitis C about to begin interferon alpha and ribavirin treatment. Alpha reliabilities for both the Schwartz Cancer Fatigue Scale and Hepatitis Quality of Life Questionnaire were moderately high. Power analyses of all outcome measures indicated a small effect size and sample size estimate of 30–40 per group to achieve power of …
Examination Of Homalometron Elongatum Manter, 1947 And Description Of A New Congener From Eucinostomus Currani Zahuranec, 1980 In The Pacific Ocean Off Costa Rica, Jessica H. Parker, Stephen S. Curran, Robin M. Overstreet, Vasyl V. Tkach
Examination Of Homalometron Elongatum Manter, 1947 And Description Of A New Congener From Eucinostomus Currani Zahuranec, 1980 In The Pacific Ocean Off Costa Rica, Jessica H. Parker, Stephen S. Curran, Robin M. Overstreet, Vasyl V. Tkach
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Homalometron elongatum is reexamined using heat-killed material that was not subjected to pressure during fixation from Gerres cinereus collected from San Juan Harbor, Puerto Rico, U.S.A. The new material is compared with some paratype specimens and differs by having a much less variable forebody length, and a median rather than submedian genital pore. Tegumental spines reportedly cover the anterior end of the body but we observed tegumental spines covering the entire body surface in both the paratype and new material. Homalometron lesliorum n. sp. is described from Eucinostomus currani from the Pacific coasts of Costa Rica and Nicaragua. The new …
Robustness Of The Healthcare Utilization Results From The Rotavirus Efficacy And Safety Trial (Rest) Evaluating The Human-Bovine (Wc3) Reassortant Pentavalent Rotavirus Vaccine (Rv5), Robbin Itzler, Gary Koch, David O. Matson, Leif Gothefors, Pierre Van Damme, Mark J. Dinubile, Penny M. Heaton
Robustness Of The Healthcare Utilization Results From The Rotavirus Efficacy And Safety Trial (Rest) Evaluating The Human-Bovine (Wc3) Reassortant Pentavalent Rotavirus Vaccine (Rv5), Robbin Itzler, Gary Koch, David O. Matson, Leif Gothefors, Pierre Van Damme, Mark J. Dinubile, Penny M. Heaton
Community & Environmental Health Faculty Publications
Background: The Rotavirus Efficacy and Safety Trial was a placebo-controlled Phase III study that evaluated the safety and efficacy of a three-dose pentavalent rotavirus vaccine (RV5) including its effect on healthcare utilization for rotavirus gastroenteritis (RVGE). The per-protocol (PP) analyses, which counted events occurring 14 days after dose 3 among infants without protocol violations, have already been published. This paper evaluates the consistency of the healthcare utilization results based on the modified intention to treat (MITT) analyses with the PP analyses. The MITT analyses include all infants receiving at least one dose of vaccine or placebo and follow-up begins after …
How Specialists Can Be Generalists: Resolving The "Parasite Paradox" And Implications For Emerging Infectious Disease, Salvatore J. Agosta, Niklas Janz, Daniel R. Brooks
How Specialists Can Be Generalists: Resolving The "Parasite Paradox" And Implications For Emerging Infectious Disease, Salvatore J. Agosta, Niklas Janz, Daniel R. Brooks
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The parasite paradox arises from the dual observations that parasites (broadly construed, including phytophagous insects) are resource specialists with restricted host ranges, and yet shifts onto relatively unrelated hosts are common in the phylogenetic diversification of parasite lineages and directly observable in ecological time. We synthesize the emerging solution to this paradox: phenotypic flexibility and phylogenetic conservatism in traits related to resource use, grouped under the term ecological fitting, provide substantial opportunities for rapid host switching in changing environments, in the absence of the evolution of novel host-utilization capabilities. We discuss mechanisms behind ecological fitting, its implications for defining specialists …
Muellerius Capillaris Dominates The Lungworm Community Of Bighorn Sheep At The National Bison Range, Montana, Vanessa O. Ezenwa, Alicia M. Hines, Elizabeth A. Archie, Eric P. Hoberg, Ingrid M. Asmundsson, John T. Hogg
Muellerius Capillaris Dominates The Lungworm Community Of Bighorn Sheep At The National Bison Range, Montana, Vanessa O. Ezenwa, Alicia M. Hines, Elizabeth A. Archie, Eric P. Hoberg, Ingrid M. Asmundsson, John T. Hogg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Lungworm infections are common among bighorn sheep (Ovis canadensis) in North America, and the predominant species reported are Protostrongylus stilesi and P. rushi. The only records of another lungworm species, Muellerius capillaris, infecting bighorns come from South Dakota, USA. At the National Bison Range (NBR), Montana, USA we found that across six sampling periods, 100% of wild bighorn sheep surveyed were passing first-stage dorsal-spined larvae (DSL) which appeared to be consistent with M. capillaris. By contrast, only 39%or fewer sheep were passing Protostrongylus larvae. Using molecular techniques, we positively identified the DSL from the NBR …
Balancing Consumer Protection And Scientific Integrity In The Face Of Uncertainty: The Example Of Gluten-Free Foods, Margaret Sova Mccabe
Balancing Consumer Protection And Scientific Integrity In The Face Of Uncertainty: The Example Of Gluten-Free Foods, Margaret Sova Mccabe
Law Faculty Scholarship
In 2009, gluten-free foods were not only "hot" in the marketplace, several countries, including the United States, continued efforts to define gluten-free and appropriate labeling parameters. The regulatory process illuminates how difficult regulations based on safe scientific thresholds can be for regulators, manufacturers and consumers. This article analyzes the gluten-free regulatory landscape, challenges to defining a safe gluten threshold, and how consumers might need more label information beyond the term "gluten-free." The article includes an overview of international gluten-free regulations, the Food and Drug Administration (FDA) rulemaking process, and issues for consumers.
Induction Of Interferon And Interferon Signaling Pathways By Replication Of Defective Interfering Particle Rna In Cells Constitutively Expressing Vesicular Stomatitis Virus Replication Proteins, Debasis Panda, Phat X. Dinh, Lalit Beura, Asit K. Pattnaik
Induction Of Interferon And Interferon Signaling Pathways By Replication Of Defective Interfering Particle Rna In Cells Constitutively Expressing Vesicular Stomatitis Virus Replication Proteins, Debasis Panda, Phat X. Dinh, Lalit Beura, Asit K. Pattnaik
School of Veterinary and Biomedical Sciences: Faculty Publications
We show here that replication of defective interfering (DI) particle RNA in HEK293 cells stably expressing vesicular stomatitis virus (VSV) replication proteins potently activates interferon (IFN) and IFN signaling pathways through upregulation of IFN- promoter, IFN-stimulated response element (ISRE) promoter, and NF-κB promoter activities. Replication of DI particle RNA, not mere expression of the viral replication proteins, was found to be critical for induction of IFN and IFN signaling. The stable cells supporting replication of DI RNA described in this report will be useful in further examining the innate immune signaling pathways and the host cell functions in viral genome …
Chloroquine Susceptibility And Reversibility In A Plasmodium Falciparum Genetic Cross, Jigar J. Patel, Drew Thacker, John C. Tan, Perri Pleeter, Lisa Checkley, Joseph M. Gonzales, Bingbing Deng, Paul D. Roepe, Roland A. Cooper, Michael T. Ferdig
Chloroquine Susceptibility And Reversibility In A Plasmodium Falciparum Genetic Cross, Jigar J. Patel, Drew Thacker, John C. Tan, Perri Pleeter, Lisa Checkley, Joseph M. Gonzales, Bingbing Deng, Paul D. Roepe, Roland A. Cooper, Michael T. Ferdig
Biological Sciences Faculty Publications
Mutations in the Plasmodium falciparum chloroquine (CQ) resistance transporter (PfCRT) are major determinants of verapamil (VP)-reversible CQ resistance (CQR). In the presence of mutant PfCRT, additional genes contribute to the wide range of CQ susceptibilities observed. It is not known if these genes influence mechanisms of chemosensitization by CQR reversal agents. Using quantitative trait locus (QTL) mapping of progeny clones from the HB3 x Dd2 cross, we show that the P. falciparum multidrug resistance gene 1 (pfmdr1) interacts with the South-East Asia-derived mutant pfcrt haplotype to modulate CQR levels. A novel chromosome 7 locus is predicted to contribute …
Towards An Understanding Of The Herpes Simplex Virus Type 1 Latency-Reactivation Cycle, Guey-Chuen Perng, Clinton Jones
Towards An Understanding Of The Herpes Simplex Virus Type 1 Latency-Reactivation Cycle, Guey-Chuen Perng, Clinton Jones
School of Veterinary and Biomedical Sciences: Faculty Publications
Infection by herpes simplex virus type 1 (HSV-1) can cause clinical symptoms in the peripheral and central nervous system. Recurrent ocular shedding can lead to corneal scarring and vision loss making HSV-1 a leading cause of corneal blindness due to an infectious agent. The primary site of HSV-1 latency is sensory neurons within trigeminal ganglia. Periodically, reactivation from latency occurs resulting in virus transmission and recurrent disease. During latency, the latency-associated transcript (LAT) is abundantly expressed. LAT expression is important for the latency-reactivation cycle in animal models, in part, because it inhibits apoptosis, viral gene expression, and productive infection. A …
Genbank, Dennis A. Benson, Ilene Karasch-Mizrachi, David J. Lipman, James Ostell, Eric W. Sayers
Genbank, Dennis A. Benson, Ilene Karasch-Mizrachi, David J. Lipman, James Ostell, Eric W. Sayers
Harold W. Manter Laboratory: Library Materials
GenBank(R) is a comprehensive database that contains publicly available nucleotide sequences for more than 380,000 organisms named at the genus level or lower, obtained primarily through submissions from individual laboratories and batch submissions from large-scale sequencing projects, including whole genome shotgun (WGS) and environmental sampling projects. Most submissions are made using the web-based BankIt or standalone Sequin programs, and accession numbers are assigned by GenBank staff upon receipt. Daily data exchange with the European Nucleotide Archive (ENA) and the DNA Data Bank of Japan (DDBJ) ensures worldwide coverage. GenBank is accessible through the NCBI Entrez retrieval system that integrates data …
Phylogenetic Position Of The Acariform Mites: Sensitivity To Homology Assessment Under Total Evidence, Almir R. Pepato, Carlos E. F. Da Rocha, Jason A. Dunlop
Phylogenetic Position Of The Acariform Mites: Sensitivity To Homology Assessment Under Total Evidence, Almir R. Pepato, Carlos E. F. Da Rocha, Jason A. Dunlop
Harold W. Manter Laboratory: Library Materials
Background: Mites (Acari) have traditionally been treated as monophyletic, albeit composed of two major lineages: Acariformes and Parasitiformes. Yet recent studies based on morphology, molecular data, or combinations thereof, have increasingly drawn their monophyly into question. Furthermore, the usually basal (molecular) position of one or both mite lineages among the chelicerates is in conflict to their morphology, and to the widely accepted view that mites are close relatives of Ricinulei.
Results: The phylogenetic position of the acariform mites is examined through employing SSU, partial LSU sequences, and morphology from 91 chelicerate extant terminals (forty Acariformes). In a static homology framework, …
Epsvr And Epmeta: Prediction Of Antigenic Epitopes Using Support Vector Regression And Multiple Server Results, Shide Liang, Dandan Zheng, Daron M. Standley, Bo Yao, Martin Zacharias, Chi Zhang
Epsvr And Epmeta: Prediction Of Antigenic Epitopes Using Support Vector Regression And Multiple Server Results, Shide Liang, Dandan Zheng, Daron M. Standley, Bo Yao, Martin Zacharias, Chi Zhang
School of Biological Sciences: Faculty Publications
Background: Accurate prediction of antigenic epitopes is important for immunologic research and medical applications, but it is still an open problem in bioinformatics. The case for discontinuous epitopes is even worse - currently there are only a few discontinuous epitope prediction servers available, though discontinuous peptides constitute the majority of all B-cell antigenic epitopes. The small number of structures for antigen-antibody complexes limits the development of reliable discontinuous epitope prediction methods and an unbiased benchmark to evaluate developed methods.
Results: In this work, we present two novel server applications for discontinuous epitope prediction: EPSVR and EPMeta, where EPMeta …
Ectoparasites Of Bats In Mongolia (Ischnopsyllidae, Nycteribiidae, Cimicidae And Spinturnicidae), Ingo Sceffler, Dietrich Dolch, Jargalsaikhan Ariunbold, Nyamsuren Batsajchan, Andreas Abraham, Klaus Thiele
Ectoparasites Of Bats In Mongolia (Ischnopsyllidae, Nycteribiidae, Cimicidae And Spinturnicidae), Ingo Sceffler, Dietrich Dolch, Jargalsaikhan Ariunbold, Nyamsuren Batsajchan, Andreas Abraham, Klaus Thiele
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
For large parts of the world, the knowledge of bat ectoparasites is still scanty. Regarding Mongolia, only few studies exist to date. This paper analyzes results from extensive captures between 2005-2008, carried out in different sites of Mongolia. Discussed ectoparasites include bat fleas, (Ischnopsyllidae), bat flies (Nycteribiidae), and bat bugs (Cimicidae) and spinturnicid mites (Spinturnicidae). A number of species found in this study were new records for Mongolia, and for many species additional sites were reported. For some bat species, the spectrum and frequency of larger ectoparasites could be determined for the first time.
Current State Of Ixodidae Research In Mongolia, Daniel Kiefer, K. Pfister, D. Tserennorov, G. Bolormaa, D. Otgonbaatar, Ravčigijn Samjaa, E. G. Burmeister, Mathias S. Kiefer
Current State Of Ixodidae Research In Mongolia, Daniel Kiefer, K. Pfister, D. Tserennorov, G. Bolormaa, D. Otgonbaatar, Ravčigijn Samjaa, E. G. Burmeister, Mathias S. Kiefer
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Our research presents the Ixodidae-fauna in Mongolia. The current taxonomic state in Mongolia shows 19 Ixodidae taxa extracted in 308 locations from 115 bird and mammal species. In 1980, the species Ixodes persulcatus SCHULZE, 1930 and Ixodes berlesei Birula, 1895 were detected in Inget Tolgoi and Ixodes laguri OLENEV, 1929 on Meriones unguiculatus 10 km southeast of Ulaanbaatar for the first time. In 2000 the species Haemaphysalis concinna Koch, 1844 was detected in the Selenge-river area and Argas (Argas) vulgaris FILIPPOVA, 1961 was detected in the Gobi area. From the collection of M. and A. STUBBE 1 N …
Distribution Of Fleas (Siphonaptera) In Bird-Nests, Bird Siphonaptera On Mammalia And The Medical Importance Of Interspecific Flea Transmission In Mongolia, Daniel Kiefer, K. Pfister, D. Tserennorov, D. Otgonbaatar, Ravčigijn Samjaa, D. Sumjaa, E. G. Burmeister, Mathias S. Kiefer
Distribution Of Fleas (Siphonaptera) In Bird-Nests, Bird Siphonaptera On Mammalia And The Medical Importance Of Interspecific Flea Transmission In Mongolia, Daniel Kiefer, K. Pfister, D. Tserennorov, D. Otgonbaatar, Ravčigijn Samjaa, D. Sumjaa, E. G. Burmeister, Mathias S. Kiefer
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Starting in the 1960s of the last century a huge amount of material from mammals and birds was collected in Mongolia. The according results were published in Erforschung biologischer Ressourcen der Mongolei, Volume 1-10, and represented on conferences in Halle, Moscow, Irkutsk, Ulaanbaatar, Bratislava and the Entomological Review St. Petersburg.
A big part of the collected material consisted of ectoparasites analyzed by experts from Mongolia, Germany, England, Russia, Poland, Czech Republic, and Slovakia resulting in newly described species along with zoogeographical and ecological profiles.
During the years 1974-2007 material from 321 nests of 38 bird taxa were obtained. 157 …
New Species In The Genus Monoecocesuts (Cestoda: Anoplocephalidae) From Neotropical Rodents (Caviidae And Sigmodontidae), Terry Haverkost, Scott Lyell Gardner
New Species In The Genus Monoecocesuts (Cestoda: Anoplocephalidae) From Neotropical Rodents (Caviidae And Sigmodontidae), Terry Haverkost, Scott Lyell Gardner
Scott L. Gardner Publications
Anoplocephalid cestodes have a worldwide distribution, but relatively few species are known from South American rodents. By examining the collections of the Harold W. Manter Laboratory of Parasitology and the United States National Parasite Collection, 6 new species of Monoecocestus Beddard, 1914, are described, along with a redescription of Monoecocestus mackiewiczi Schmidt and Martin, 1978, based on the type specimens. The discussion includes commentary about uterine development, an important taxonomic character of the family, the vaginal dilation in immature segments (a character of potential taxonomic importance), and the implication of host usage to the evolutionary history and biogeography of species …
First Report Of Viral Pathogens Wssv And Ihhnv In Argentine Crustaceans [Note], Sergio Roberto Martorelli, Robin M. Overstreet, Jean A. Jovanovich Alvillar
First Report Of Viral Pathogens Wssv And Ihhnv In Argentine Crustaceans [Note], Sergio Roberto Martorelli, Robin M. Overstreet, Jean A. Jovanovich Alvillar
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
The pathogenic penaeid shrimp viruses white spot syndrome virus (WSSV) and infectious hypodermal and hematopoietic necrosis virus (IHHNV) are reported for the first time from Argentina. They both occurred in wild crustaceans in Bahia Blanca Estuary, with WSSV detected by polymerase chain reaction (pCR) or real time quantitative pCR (qpCR) methods as infecting samples as high as 56% of the penaeid Artemesia longinaris Bate, 1888, 67% of the grapsoid Cyrtograpsus angulatus dana, 1851, and 40% of the introduced palaemonid Palaemon macrodactylus Rathbun, 1902. The highest detected copy number was 39,600 copies/μg dNA. IHHNV was tested for using pCR in …
Discovery Of New Ohbayashinema Spp. (Nematoda: Heligmosomoidea) In Ochotona Princeps And Ochotona Cansus (Lagomorpha: Ochotonidae) From Western North America And Central Asia, With Considerations Of Historical Biogeography, M.-C. Durrette-Desset, Kurt E. Galbreath, Eric P. Hoberg
Discovery Of New Ohbayashinema Spp. (Nematoda: Heligmosomoidea) In Ochotona Princeps And Ochotona Cansus (Lagomorpha: Ochotonidae) From Western North America And Central Asia, With Considerations Of Historical Biogeography, M.-C. Durrette-Desset, Kurt E. Galbreath, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Three new species of Ohbayashinema (Nematoda, Heligmosomoidea) are described from localities in western North America and central Asia. Two of these species, Ohbayashinema nearctica n. sp. and Ohbayashinema aspeira n. sp., are parasitic in American pika, Ochotona princeps. Ohbayashinema nearctica is differentiated from the 5 known species of the genus parasitic in Ochotonidae from the Old World by very long spicules and an oblique axis of orientation for the ridges composing the synlophe. Ohbayashinema aspeira, described only from females, is similar to Oh. nearctica based on the number of cuticular ridges at the midbody. It is mainly differentiated …
Critical Comment: What We Don’T Recognize Can Hurt Us: A Plea For Awareness About Cryptic Species, Gerardo Pérez-Ponce De León, Steven A. Nadler
Critical Comment: What We Don’T Recognize Can Hurt Us: A Plea For Awareness About Cryptic Species, Gerardo Pérez-Ponce De León, Steven A. Nadler
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
We conducted an extensive literature review on studies that have used DNA sequences to detect cryptic species of parasites during the last decade. Each literature citation that included the term ‘‘cryptic’’ or ‘‘sibling’’ species was analyzed to determine the approach used by the author(s). Reports were carefully filtered to retain only those that recognized the existence of cryptic species centered on the use of DNA sequences. Based on analysis of these papers, we comment on the different ways that parasite cryptic species are discovered in studies focusing on different aspects of the host–parasite relationship, or disciplines, within parasitology. We found …
Structural Restoration Of Nematodes And Acanthocephalans Fixed In High Percentage Alcohol Using Dess Solution And Rehydration, Soraya Naem, Christopher Pagan, Steven A. Nadler
Structural Restoration Of Nematodes And Acanthocephalans Fixed In High Percentage Alcohol Using Dess Solution And Rehydration, Soraya Naem, Christopher Pagan, Steven A. Nadler
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Ninety-five percent ethanol is the most widely used field and laboratory preservative for nematodes and other helminth specimens intended for use in molecular systematics. Preservation of nematodes in high-concentration alcohols results in structural dehydration artifacts, including shrinkage and body surface distortions sufficient to obscure features required for morphological identification and analysis, thereby compromising precise morphometrics. However, treating dehydrated nematodes using a solution of DMSO, disodium EDTA, and NaCl, followed by rehydration in water produces marked improvements in specimen shape and surface features, resulting from diffusion of water into the tissues and pseudocoelom as the internal salt concentration is reduced. Following …
Soil-Transmitted Helminthiases: Implications Of Climate Change And Human Behavior, Haylee J. Weaver, John M. Hawdon, Eric P. Hoberg
Soil-Transmitted Helminthiases: Implications Of Climate Change And Human Behavior, Haylee J. Weaver, John M. Hawdon, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty and Staff Publications
Soil-transmitted helminthiases (STHs) collectively cause the highest global burden of parasitic disease after malaria and are most prevalent in the poorest communities, especially in sub-Saharan Africa. Climate change is predicted to alter the physical environment through cumulative impacts of warming and extreme fluctuations in temperature and precipitation, with cascading effects on human health and wellbeing, food security and socioeconomic infrastructure. Understanding how the spectrum of climate change effects will influence STHs is therefore of critical importance to the control of the global burden of human parasitic disease. Realistic progress in the global control of STH in a changing climate requires …
How Birds Combat Ectoparasites, Dale H. Clayton, Jennifer A. H. Koop, Christopher W. Harbison, Brett R. Moyer, Sarah E. Bush
How Birds Combat Ectoparasites, Dale H. Clayton, Jennifer A. H. Koop, Christopher W. Harbison, Brett R. Moyer, Sarah E. Bush
Harold W. Manter Laboratory: Library Materials
Birds are plagued by an impressive diversity of ectoparasites, ranging from feather-feeding lice, to feather-degrading bacteria. Many of these ectoparasites have severe negative effects on host fitness. It is therefore not surprising that selection on birds has favored a variety of possible adaptations for dealing with ectoparasites. The functional significance of some of these defenses has been well documented. Others have barely been studied, much less tested rigorously. In this article we review the evidence--or lack thereof--for many of the purported mechanisms birds have for dealing with ectoparasites. We concentrate on features of the plumage and its components, as well …
Evolutionary History Of Mammalian Sucking Lice (Phthiraptera: Anoplura), Jessica E. Light, Vincent S. Smith, Julie M. Allen, Lance A. Durden, David L. Reed
Evolutionary History Of Mammalian Sucking Lice (Phthiraptera: Anoplura), Jessica E. Light, Vincent S. Smith, Julie M. Allen, Lance A. Durden, David L. Reed
Harold W. Manter Laboratory: Library Materials
Background
Sucking lice (Phthiraptera: Anoplura) are obligate, permanent ectoparasites of eutherian mammals, parasitizing members of 12 of the 29 recognized mammalian orders and approximately 20% of all mammalian species. These host specific, blood-sucking insects are morphologically adapted for life on mammals: they are wingless, dorso-ventrally flattened, possess tibio-tarsal claws for clinging to host hair, and have piercing mouthparts for feeding. Although there are more than 540 described species of Anoplura and despite the potential economical and medical implications of sucking louse infestations, this study represents the first attempt to examine higher-level anopluran relationships using molecular data. In this study, we …