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Journal of Parasitology

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https://www.readbyqxmd.com/read/30240329/achatina-fulica-mollusca-achatinidae-naturally-infected-with-caenorhabditis-briggsae-dougherty-nigon-1949-nematoda-rhabditidae
#1
Nelson Uribe, Nelson Uribe, Bladimiro Rincón-Orozco
Exemplars of the African snail Achatina fulica, collected in Bucaramanga, Colombia were examined for parasites. In the digestive tract, numerous specimens of Caenorhabditis briggsae were collected and identified by molecular and morphological methods. A redescription of the species is done.
September 21, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30208286/hispidorhynchus-styracurae-n-sp-trypanorhyncha-eutetrarhynchidae-from-the-chupare-stingray-styracura-schmardae-werner-from-the-caribbean-sea-including-new-records-of-oncomegas-wageneri-linton-1890
#2
Bjoern C Schaeffner
Species of the eutetrarhynchid genus Hispidorhynchus Schaeffner and Beveridge, 2012 possess an uncinate macrohook on the bothrial surface of the basal swelling of each tentacle. This unique feature of the oncotaxy is only shared with the closely-related genus Oncomegas Dollfus, 1929. A new species of Hispidorhynchus is described from specimens infecting Styracura schmardae (Werner, 1904) (Potamotrygonidae) from the western Caribbean Sea off the coast of Belize and Panama. Hispidorhynchus styracurae n. sp. differs from its 3 congeners in the possession of smaller and narrower bulbs, fewer principle hooks in the metabasal armature, size of the macrohook and different scolex proportions...
September 12, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30207199/genotypic-characterization-of-cryptosporidium-species-in-humans-and-peri-domestic-animals-in-ekiti-and-oyo-state-nigeria
#3
Adekunle Ayinmode, Bruno Cm Oliveira, O O Obebe, Hannah Dada-Adegbola, Adejumoke Ayede, Giovanni Widmer
Cryptosporidiosis is one of the leading causes of diarrhea in humans and several vertebrates species. Because surveys of Cryptosporidium genotypes from animals and humans living in the same region are rare, our understanding of the importance of zoonotic transmission in the epidemiology of cryptosporidiosis remains superficial. PCR was used to amplify a portion of the Cryptosporidium 18S small subunit ribosomal RNA gene from fecal DNA from humans and livestock living in Ekiti and Oyo state, Nigeria. PCR-positive samples were further analyzed using PCR targeting the heat-shock protein HSP-70, the actin and the sporozoite glycoprotein gene gp60...
September 12, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30188243/introduction-of-asp-president-2017-2018-dr-susan-perkins
#4
Anna J Phillips
No abstract text is available yet for this article.
September 6, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30183505/litomosoides-microfilaria-in-seven-neotropical-bat-species
#5
Anna-Valeska Bettina Vogeler, Marco Tschapka, Elisabeth Kalko, Veronika Cottontail
Litomosoides spp. (Nematoda: Filarioidea: Onchocercidae) are of great interest for understanding dynamics of zoonoses because of their similarity to human-infecting filariae (e.g., Onchocerca volvulus). We encountered Litomosoides microfilaria in blood samples from 7 Panamanian bat species. Species were identified through morphological analysis. We assessed individual traits and immune response of the host individuals as well as host species ecology. We found 8 host-specific species/morphotypes of Litomosoides microfilariae in 5 bat species, with 5 individuals showing multiple infections...
September 5, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30169120/functional-genomic-study-in-strongyloides-and-related-parasitic-nematodes-by-transgenesis-and-crispr-cas9-mutagenesis
#6
James B Lok
No abstract text is available yet for this article.
August 31, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30148419/further-characterization-of-molecular-markers-in-canine-dirofilaria-immitis-infection
#7
Ashley Behan-Braman, Patty Sue Weber, Lucienne Tritten, Timothy Geary, Maureen Therese Long, Sarah Beachboard, Charles Mackenzie
Dirofilaria immitis is a common filarial parasite found in dogs and cats in the Americas, with the pathophysiological consequences of the infection differing somewhat between these two host species. Recent research efforts have been focused on determining if the microRNAs (miRNAs) released from adult Dirofilariae have a role as markers for distinguishing the intensity of adult worm infection, as well as determining the presence of new infections. This study expands previous work on two nematode miRNAs, miR-34 and miR-71, by addressing their ability to discriminate between low and high D...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30142293/widespread-distribution-of-ceratonova-shasta-cnidaria-myxosporea-genotypes-indicates-both-evolutionary-adaptation-to-its-salmonid-fish-hosts
#8
Matthew E T Stinson, Stephen Douglas Atkinson, Jerri L Bartholomew
The distribution of the freshwater, myxozoan parasite Ceratonova shasta, in the Pacific Northwest of North America is limited to overlap in the ranges of its 2 hosts: the polychaete Manyunkia sp., and Pacific salmonids. Studies in the Klamath River (Oregon/California) and Deschutes River (Oregon), showed that the parasite population is comprised of multiple, sympatric genotypes, some of which correlate with particular salmonid host species and with differences in clinical disease in those hosts. The 3 primary genotypes O, I and II, are defined by the number of a specific tri-nucleotide repeat in the ITS-1 region...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30141720/intestinal-parasites-in-galapagos-sea-lions-zalophus-wollebaeki-sivertsen-1953-on-san-crist%C3%A3-bal-island-gal%C3%A3-pagos-ecuador
#9
Heather Walden, Colon Jaime Grijalva, Diego Paez-Rosas, Jorge Hernandez
Knowledge regarding endoparasites of Galapagos sea lions, Zalophus wollebaeki Sivertsen, 1953, is limited to 1 report. Herein, we examined feces extracted from the lower gastro-intestinal tract of 15 Galapagos sea lions (GSL) plus 14 fecal mounds nearby GSL at 4 locations on San Cristobal Island, Galapagos beginning in May continuing through June 2016. Using standard fecal flotation and sedimentation techniques, lungworm larvae, suggestive of Parafilaroides and Otostrongylus sp., eggs of pseudophyllidea cestodes and anisakid nematodes, and coccidian oocysts were collected from study samples...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30138083/distribution-prevalence-and-maximum-intensity-of-the-ectoparasitic-copepod-salmincola-cf-edwardsii-in-brook-trout-in-wisconsin-streams
#10
Matthew G Mitro, Joanna D Griffin
Since the late 19th century the ectoparasitic copepod Salmincola cf. edwardsii have been observed infecting brook trout Salvelinus fontinalis in Wisconsin streams. A perceived increase in the incidence of S. cf. edwardsii infection across the state and the observation of an S. edwardsii epizootic leading to declines in brook trout recruitment in Ash Creek, Wisconsin, have raised concerns about the extent to which S. edwardsii threaten other populations of brook trout in Wisconsin streams. In 2013-2017, brook trout were inspected in 282 streams across the state to determine the distribution, prevalence, and maximum intensity of infection of adult female copepods whose morphology was consistent with S...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30138055/preliminary-comparison-of-an-in-house-real-time-pcr-with-the-automated-bd-max-enteric-parasite-panel-for-the-detection-of-giardia-intestinalis
#11
Fabio Formenti, Chiara Piubelli, Roberta Narra, Dora Buonfrate, Barbara Pajola, Giovanna Lunghi, Zeno Bisoffi, Francesca Perandin
Giardia intestinalis is a parasite that commonly causes diarrheal disease throughout the world. An accurate and rapid diagnosis is essential to reduce the infection. Classically, diagnosis of giardiasis is performed by microscopic examination of stool samples, but in the recent years many DNA-based methods have been developed. In this preliminary observational study we compared the results of the commercial BD Max Enteric Parasite Panel (EPP) with an in-house real-time PCR for Giardia intestinalis. The study population was composed by 73 samples; of these, 27 resulted positive at both techniques and 39 negative...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30117780/molecular-and-morphological-discrimination-of-dicrocoeliid-larvae-trematoda-digenea-from-terrestrial-mollusks-in-japan
#12
Tsukasa Waki, Minoru Nakao, Kei Hayashi, Hiromi Ikezawa, Norio Tsutumi
Trematodes of the family Dicrocoeliidae commonly use terrestrial mollusks as the first intermediate host. Despite the abundant studies on the adult worms in birds and mammals, few reports exist on their larval stage in snail intermediate hosts. A present survey of mollusks in Japan led us to the discovery of dicrocoeliid sporocysts with cercariae in 16 out of 303 individuals, encompassing eight snail species and one slug species. A DNA barcoding based on sequencing of mitochondrial cytochrome c oxidase subunit 1 showed that the larvae consisted of five species...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30106337/molecular-characterization-of-theileria-spp-in-goats-from-shaanxi-province-northwestern-china
#13
Zheng-Qing Yu, Jun-Ke Song, Hui-Jun Zhang, Ting-Li Liu, Xian-Cheng Fan, Guang-Hui Zhao
Theileriosis is an important tick-borne pathogen of livestock globally, causing severe reduction of livestock productivity and economic loss. To systematically investigate the prevalence and species of Theileria spp. in goats from Shaanxi province, a total of 509 blood samples were collected from dairy, cashmere and meat goats from 7 counties, and examined by using the microscopic examination and the nested PCR targeting the SSU rRNA gene. Of them, 268 (52.7%, 268/509) were positive for Theileria infection...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30091944/molecularly-confirmed-acute-fatal-sarcocystis-falcatula-infection-in-the-rainbow-lorikeets-trichoglossus-moluccanus-at-the-philadelphia-zoo
#14
Shiv Verma, John Trupkiewicz, Tim Georoff, J P Dubey
The protozoan parasite Sarcocystis falcatula is an important cause of clinical disease in several avian intermediate hosts. The host range of S. falcatula is wide and numerous outbreaks of acute sarcocystosis have been reported in passerine and psittacine birds in captivity in the Americas. Previous diagnosis was performed by serologic methods, light and/or electron microscopic examinations with limited molecular confirmation. Here, we report histological and molecular diagnosis of acute, fatal S. falcatula infections in rainbow lorikeets (Trichoglossus moluccanus) at the Philadelphia Zoo...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30088785/prolonged-storage-increases-virulence-of-steinernema-entomopathogenic-nematodes-towards-drosophila-larvae
#15
Shruti Yadav, Ioannis Eleftherianos
Entomopathogenic nematodes are excellent organisms for dissecting the molecular basis of parasitism and probing the insect innate immune system. The nematode parasite Steinernema carpocapsae is a potent pathogen of insects that has emerged recently as model for parasitic infection and anti-nematode immune signaling and response. The nematodes are mutualistically associated with the bacteria Xenorhabdus nematophila, which are also pathogenic to insects. Separation of nematodes from their associated bacteria facilitates mechanistic studies focusing on the impact of the parasites without considering the contribution of their bacterial partners...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30085900/demonstration-of-the-anthelmintic-potency-of-marimastat-in-the-heligmosomoides-polygyrus-rodent-model
#16
Elaine Robertson, Yvonne Harcus, Chris J C Johnston, Antony P Page, Malcolm D Walkinshaw, Rick M Maizels, Douglas Houston
In the course of a structure based drug discovery program the known anticancer candidate marimastat was uncovered as a potent inhibitor of an enzyme in nematode cuticle biogenesis. It was shown to kill Caenorhabditis elegans, and the sheep parasites Haemonchus contortus and Teladorsagia circumcinta via an entirely novel nematode-specific pathway, specifically by inhibiting cuticle-remodelling enzymes that the parasites require for the developmentally essential moulting process. This discovery prompted an investigation of the compound's effect on Heligmosomoides polygyrus parasites in a mouse model of helminth infection...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30074878/detection-and-evaluation-of-antibody-response-to-a-baylisascaris-specific-antigen-in-rodent-hosts-using-western-blotting-and-elisa
#17
Sarah G H Sapp, Sukwan Handali, Sara B Weinstein, Michael J Yabsley
Diagnosis of parasitic diseases that involve tissue stage larvae is challenging, and serology remains the most effective antemortem test for detecting these infections. Baylisascaris procyonis, the raccoon roundworm, is a zoonotic ascarid. Raccoons are the usual definitive host, and humans may be infected as accidental hosts. More than 150 species of birds and mammals may act as paratenic hosts and rodents play an important role in the transmission and maintenance of this parasite in nature. Migratory larvae in paratenic hosts tissues can produce ocular disease and severe to fatal neurologic disease but not all infected hosts develop signs...
August 29, 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30021474/five-new-species-of-the-tapeworm-genus-anthocephalum-rhinebothriidea-anthocephaliidae-parasitizing-a-single-species-of-indo-pacific-stingray-and-a-revised-diagnosis-of-the-genus
#18
Kaylee S Herzog, Kirsten Jensen
Five new species of the elasmobranch tapeworm genus Anthocephalum Linton, 1890 (Rhinebothriidea: Anthocephaliidae Ruhnke, Caira and Cox, 2015 ) are described from the mangrove whipray, Urogymnus granulatus (Macleay) from the Solomon Islands and northern Australia. Anthocephalum blairi n. sp., Anthocephalum gravisi n. sp., Anthocephalum haroldsoni n. sp., Anthocephalum mounseyi n. sp., and Anthocephalum ruhnkei n. sp. differ from one another and their congeners based on quantitative and qualitative features of the scolex and proglottid anatomy...
October 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30019985/persistent-taenia-solium-cysticercosis-in-the-state-of-morelos-mexico-human-and-porcine-seroprevalence
#19
Julio Morales, José Juan Martínez, Nelly Villalobos, Marisela Hernández, Rubén Ramírez, Berenice Salgado-Estrada, Herminio Jiménez, Alfredo Figueroa, Luisa María Sánchez, Eduardo Lazcano, Agnes Fleury, Aline Aluja, Edda Sciutto
Serological tests are needed to estimate the prevalence of Taenia solium cysticercosis in endemic rural areas. The predictive value of serum antibody levels to diagnose porcine cysticercosis and human neurocysticercosis (NC) was herein assessed by ELISA using serum samples from 247 backyard pigs (141 without cysticercosis and 106 with cysticercosis) and 183 human subjects (116 non-NC subjects and 67 NC patients) in central Mexico diagnosed by necropsy and computed tomography, respectively. A sensitivity of 77...
October 2018: Journal of Parasitology
https://www.readbyqxmd.com/read/30019983/an-alternative-treatment-against-acanthocephala-prosthenorchis-elegans-in-captive-squirrel-monkeys-saimiri-sciureus-in-mexico
#20
J J José Zárate-Ramos, M A Gómez-Garza, L E Rodríguez-Tovar, J Hernández Escareño, J A Contreras-Lozano
We provide the first report of Acanthocephala ( Prosthenorchis elegans) in Mexican non-human primates. There has been no known treatment against this parasite except for surgical removal, and this has been relatively ineffective because of the small juveniles. We report the presence of P. elegans in a captive breeding colony of squirrel monkeys ( Saimiri sciureus) in Mexico, and we describe a successful treatment protocol. Treatment involved 2 steps: oral administration of the drugs loperamide chlorhydrate (0...
October 2018: Journal of Parasitology
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