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Journal of Parasitology

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https://www.readbyqxmd.com/read/28644743/sarcocystis-jamaicensis-n-sp-from-red-tailed-hawks-buteo-jamaicensis-definitive-host-and-ifn-%C3%AE-gene-knockout-mice-as-experimental-intermediate-host
#1
Shiv Verma, Alexa Rosypal Von Dohlen, J Mowery, D Scott, B Rosenthal, J P Dubey, David Lindsay
Here, we report a new species of Sarcocystis with red-tailed hawk (RTH) as the natural definitive host and IFN-γ gene knockout (KO) mice as an experimental intermediate host in which sarcocysts form in muscle. Two RTHs submitted to the Carolina Raptor Center, Huntersville, North Carolina, were euthanized because they could not be rehabilitated and released. Fully sporulated 12.5 x 9.9 m sized sporocysts were found in intestinal scrapings of both hawks. Sporocysts were orally fed to laboratory-reared outbred Swiss Webster mice (SW) (Mus musculus) and also to KO mice...
June 23, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28644063/morphological-and-molecular-characterization-of-metacercaria-of-tylodelphys-digenea-diplostomidae-from-the-piscine-host-mystus-tengara-from-india
#2
Anshu Chaudhary, Shivi Gupta, Chandni Verma, Richa Tripathi, Hridaya Shanker Singh
The diversity and taxonomy of diplostomids infecting freshwater fishes of the Indian region are predominantly poorly known. Yet compared to other trematodes, identification and discrimination of diplostomid metacercaria are difficult using morphology and site of infection. The present study provides the first molecular study of Tylodelphys sp. from India. Specimens of Tylodelphys were collected from the vitreous humor of the eyes and from the brains of siluriform fish, Mystus tengara (Siluriformes: Bagridae) from Hastinapur, Meerut (U...
June 23, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28639504/spatial-and-temporal-changes-in-the-distribution-of-blood-fluke-infection-in-nicolea-gracilibranchis-polychaeta-terebellidae-the-intermediate-host-for-cardicola-orientalis-digenea-aporocotylidae-at-a-tuna-farming-site-in-japan
#3
Sho Shirakashi, Kazuki Tani, Katsuya Ishimaru, Tomoki Honryo, Sang Phil Shin, Hiro'omi Uchida, Kazuo Ogawa
Fish blood fluke of the genus Cardicola (Digenea: Aporocotylidae) are important pathogens in tuna aquaculture. Recent advances in marine blood fluke research have led to the elucidation of the lifecycles of 3 Cardicola spp. infecting tuna, which all utilize terebellid polychaetes as the intermediate host. In our survey, we obtained large numbers of Nicolea gracilibranchis infected by larval Cardicola orientalis at our tuna farming site. To determine the spatial and temporal changes in the distribution of N...
June 22, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28639473/revision-and-new-species-of-vasotrema-stunkard-1926-digenea-schistosomatoidea-turtle-blood-flukes-of-north-american-softshell-turtles-testudines-trionychidae-apalone-spp
#4
Jackson Roberts, Stephen Ashton Bullard
Gulf Coast spiny softshell turtles, Apalone spinifera aspera (Agassiz, 1857), (Testudines: Trionychidae) from Canoe Lake (33°47'56.16"N, 86°29'25.02"W; Springville, Alabama, USA) and Round Lake (32°41'50.91"N, 87°14'30.39"W; Perry Lakes State Park, Marion, Alabama, USA) were infected by Vasotrema robustum Stunkard, 1928, Vasotrema longitestis Byrd, 1939, and Vasotrema rileyae n. sp. The new species differs from its congeners by having papillate suckers, a short testis, an ovary dextral to the oviduct, and a pre-ovarian genital pore that is lateral to the ventral sucker...
June 22, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28639466/genetic-characterization-of-sarcoptes-scabiei-from-black-bears-ursus-americanus-and-other-hosts-in-eastern-united-states
#5
Sarah Peltier, Justin D Brown, Mark Ternent, Kevin D Niedringhaus, Krysten Schuler, Elizabeth Bunting, Megan Kirchgessner, Michael John Yabsley
Since the early 1990s there has been an increase in the number of cases and geographic expansion of severe mange in the black bear (Ursus americanus) population in Pennsylvania. Although there are 3 species of mites associated with mange in bears, Sarcoptes scabiei has been identified as the etiologic agent in these Pennsylvania cases. Historically S. scabiei-associated mange in bears has been uncommon and sporadic although it is widespread and relatively common in canid populations. To better understand this recent emergence of sarcoptic mange in bears in Pennsylvania and nearby states, we genetically characterized S...
June 22, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28617656/sarcocystis-pantherophis-n-sp-from-eastern-rat-snakes-pantherophis-alleghaniensis-definitive-hosts-and-interferon-gamma-gene-knockout-mice-as-experimental-intermediate-hosts
#6
Shiv Verma, David Lindsay, Joseph Mowery, Benjamin Rosenthal, J P Dubey
Here we report a new species, Sarcocystis pantherophisi n. sp. with the Eastern rat snake (Pantherophis alleghaniensis) as natural definitive host and the interferon gamma gene knockout (KO) mouse as the experimental intermediate host. Sporocysts (n = 15) from intestinal contents of the snake were 17.3 x 10.9 µm. Sporocysts were orally infective to interferon gamma KO mice but not to laboratory raised albino outbred house mice (Mus musculus). The interferon gamma KO mice developed schizont-associated neurological signs and schizonts were cultivated in vitro from the brain...
June 15, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28604263/redescription-of-austrodiplostomum-compactum-trematoda-diplostomidae-from-its-type-host-and-locality-in-venezuela-and-of-a-mordax-from-argentina
#7
Margarita Ostrowski de Núñez
Austrodiplostomum compactum from Nannopterum brasilianus, and its metacercaria from Geophagus sp. and Oreochromis mossambicus captured (1979) at its type locality Valencia Lake, Venezuela, by the author, is redescribed. The adult is characterized by its large body size, and an oral sucker smaller than the pharynx. The metacercaria has a similar body size as the adult, and the small genital primordia occupy 4.1-7.3% of body length. Experimental infections in chickens with metacercariae of Diplostomulum mordax from brains of Odonthestes bonariensis, captured (2015) at Dique Paso de las Piedras, near Bahia Blanca City, Buenos Aires Province, resulted in 10 adults 5 days post exposure...
June 10, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28594283/a-common-eurasian-fish-tapeworm-caryophyllaeides-fennica-cestoda-in-western-north-america-further-evidence-of-amphi-pacific-vicariance-in-freshwater-fish-parasites
#8
Mikuláš Oros, Anindo Choudhury, Tomáš Scholz
The freshwater fish fauna of the Palaearctic and Nearctic regions shows similarities but also notable differences, resulting in diverse distributions of their parasites. Relatively few parasite species occur in both regions and fewer still have been examined using molecular data. We report a rare example of 'amphi-Pacific' distribution, involving the common Palaearctic parasite, the caryophyllidean cestode Caryophyllaeides fennica (Schneider, 1902), in the chiselmouth Acrocheilus alutaceus Agassiz and Pickering, 1855, an endemic cyprinid in northwestern Nearctic, Oregon, USA...
June 8, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28590168/experimental-life-cycle-of-varestrongylus-eleguneniensis-nematoda-protostrongylidae-in-a-captive-reindeer-rangifer-tarandus-tarandus-and-a-muskox-ovibos-moschatus-moschatus
#9
Pratap Kafle, Josh Sullivan, Guilherme G Verocai, Susan J Kutz
The life-cycle of a recently described protostrongylid lungworm, Varestrongylus eleguneniensis, which infects caribou, muskoxen, and moose from Arctic and boreal regions of North America, was completed experimentally for the first time. A pilot study produced no patent infections when the muskox and reindeer were exposed to 51 and 30 infective third-stave larvae (L3) respectively, derived from a non-native intermediate host, Deroceras reticulatum. In the present study, a native North American native slug species, Deroceras leave was infected with the first-stage larvae (L1), isolated from the feces of wild muskoxen, to generate L3 which were administered to a captive reindeer calf ( 250 L3) and an adult captive muskox (380 L3)...
June 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28590167/effects-of-in-vivo-and-in-vitro-treatment-of-ascaris-suum-eggs-with-anthelmintic-agents-on-embryonation-and-infectivity-for-mice
#10
Jianguo Zhao, Qian Han, Chenghong Liao, Jinhua Wang, Lili Wu, Qun Liu, David S Lindsay
Ascaris suum is an important intestinal nematode causing economic losses in the swine production industry. Anthelminthic treatment is used to control A. suum infections and is part of normal production practices. Treatment with anthelminthic agents results in expulsion of adult worms from the intestinal tract and ends further contamination of the environment with eggs. The present study was conducted to determine the effects of drug treatment on the embryonation of A. suum eggs collected from worms obtained from pigs treated with 4 different commercially available anthelmintics...
June 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28589837/description-of-a-new-quadrigyrid-acanthocephalan-from-kashmir-with-notes-on-metal-analysis-and-histopathology-and-a-key-to-species-of-the-subgenus-acanthosentis-from-the-indian-subcontinent
#11
Omar M Amin, Richard A Heckmann, Ummer Rashid Zargar
Acanthogyrus (Acanthosentis) kashmirensis n. sp. is described from recently collected acanthocephalan specimens in the Jhelum River in northern Kashmir that are conspecific with Neoechinorhynchus kashmirensis Fotedar & Dhar, 1977 originally described in an unpublished Ph.D. thesis in 1972 from 4 species of cyprinid fishes, Tor tor Hamilton, Bangana diplostoma (Heckel) [syn. Labeo diplostoma Heckel] , Labeo rohita Hamilton and Ptychobarbus sp. Steindachner. The poor unpublished diagnosis was followed by one uninformative abstract in a scientific meeting in 1977...
June 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28589784/resurrection-of-mycteronastes-monogenoidea-monocotylidae-with-description-of-mycteronastes-caalusi-n-sp-from-olfactory-sacs-of-the-smalltooth-sawfish-pristis-pectinata-pristiformes-pristidae-in-the-gulf-of-mexico-off-florida
#12
Delane C Kritsky, Stephen Bullard, Micah Bakenhaster, Rachel Scharer, Gregg Poulakis
Mycteronastes Kearn and Beverley-Burton, 1990 (Monogenoidea: Monocotylidae: Merizocotylinae) was resurrected from subjective synonymy with Merizocotyle Cerfontaine, 1894, and its diagnosis emended to include monocotylids with a haptor lacking a central loculus and having 5 peripheral (2 bilateral pairs and an unpaired anteromedial loculus), 1 interhamular, and 17 marginal loculi. The 3 species of Mycteronastes accepted herein are parasitic within the olfactory sacs of rays and sawfishes: Mycteronastes icopae (Beverley-Burton and Williams, 1989) Kearn and Beverley-Burton, 1990 (type species) from the giant shovelnose ray Glaucostegus typus (Anonymous [Bennett]) (Glaucostegidae) in the southwestern Pacific Ocean; Mycteronastes undulatae Kearn and Beverley-Burton, 1990 from the undulate ray Raja undulata Lacepède (Rajidae) in the northeastern Atlantic Ocean; and Mycteronastes caalusi n...
June 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28604284/thermal-performance-curves-and-the-metabolic-theory-of-ecology-a-practical-guide-to-models-and-experiments-for-parasitologists
#13
Péter K Molnár, Jason P Sckrabulis, Karie A Altman, Thomas R Raffel
Climate change will affect host-parasite dynamics in complex ways. The development of forecast models is necessary for proactive disease management, but past studies frequently reported thermal performance data in idiosyncratic ways that have limited use for parameterizing thermal host-parasite models. Developing improved forecast models will require strong collaborations between experimental parasitologists and disease modelers. The purpose of this article is to facilitate such collaborations by reviewing practical considerations for describing thermal performance curves of parasite and host performance traits, and using them to predict climate change impacts on host-parasite systems...
June 6, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28585897/interrelationships-of-dictyocaulus-spp-in-wild-ruminants-with-morphological-description-of-dictyocaulus-cervi-n-sp-nematoda-trichostrongyloidea-from-red-deer-cervus-elaphus
#14
Anna Maria Pyziel, Zdzisław Laskowski, Aleksander W Demiaszkiewicz, Johan Höglund
Lungworms from the genus Dictyocaulus cause parasitic bronchitis (dictyocaulosis) characterized by coughing and severe lung pathology in both domestic and wild ruminants. In this study we investigated the interrelationships of Dictyocaulus spp. from European bison (Bison bonasus L.), roe deer (Capreolus capreolus) and red deer (Cervus elaphus) by nucleotide sequence analysis spanning the 18S RNA gene (SSU) and internal transcribed spacer 2 (ITS2) regions of the ribosomal gene array as well as the mitochondrial cytochrome c oxidase subunit 1 (cox1)...
June 6, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28581897/mutations-to-cysteine-residues-in-the-trypanosoma-cruzi-b-cell-superantigen-tc24-diminish-susceptibility-to-igm-mediated-hydrolysis
#15
Eric Luis Brown, Sarah Gunter, Kathryn M Jones, Christopher Seid, Heather T Essigmann, Maria Elena Bottazzi, Peter J Hotez, Bin Zhan, Ulrich Strych
B-cell superantigens (BC-SAgs) are immunoevasins that have evolved in response to innate catalytic IgM antibodies; germ-line encoded immunoglobulins present in the preimmune repertoire independent of prior antigen exposure. Catalysis is the result of a 2-step process that involves the formation of a non-covalent bond between the BC-SAg and the immunoglobulin first followed by covalent bond formation at the catalytic site resulting in target hydrolysis. Tc24 is a recently described Trypanosoma cruzi BC-SAg hypothesized to play a role in evading the humoral response early in the infection period...
June 5, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28530845/temporal-variation-in-the-abundance-and-timing-of-daily-activity-of-chagas-disease-vector-triatoma-gerstaeckeri-st%C3%A3-l-1859-in-a-natural-habitat-in-the-lower-rio-grande-valley-south-texas
#16
Alfredo Flores, Christopher Vitek, Teresa Feria Arroyo, Brian Lund Fredensborg
Chagas disease caused by Trypanosoma cruzi is a burden to millions of people in South and Central America. A sylvatic life cycle of the parasite exists in the Southern United States, but recent studies indicate an active peri-domestic life cycle of T. cruzi in Texas. The USA-Mexico border region in Texas displays areas of high poverty and sub-standard housing conditions which are important risk factors for a potential spill-over transmission to a domestic life cycle including humans. The objectives of the study were to examine short- and longterm temporal variation in vector activity, and to evaluate the effect of different combinations of attractants on the capture of potential triatomine vectors...
May 22, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28528556/proventriculitis-associated-with-cryptosporidium-baileyi-in-a-snowy-owl-bubo-scandiacus-and-its-epidemiological-investigation
#17
Shotaro Nakagun, Noriyuki Horiuchi, Miki Sugimoto, Sohei Tomikawa, Kenichi Watanabe, Yoshiyasu Kobayashi
We describe an unusual case of proventriculitis associated with Cryptosporidium baileyi in a 7-wk-old snowy owl (Bubo scandiacus) chick kept at a zoo. Necropsy of this animal revealed diffuse mucosal thickening of the proventriculus. Subsequent histopathological examinations of the proventriculus showed marked ductal epithelial hyperplasia with intestinal metaplasia and severe inflammatory cell infiltration in the lamina propria and submucosa. These lesions were associated with numerous periodic-acid-Schiff-positive cryptosporidia-like protozoan parasites...
May 20, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28509658/haemosporidian-parasites-of-reptiles-and-birds-from-gabon-central-africa
#18
Larson Boundenga, Susan L Perkins, Benjamin Ollomo, Virginie Rougeron, Eric M Leroy, François Renaud, Franck Prugnolle
Haemosporidian parasites are protozoans that infect many different vertebrates hosts. Re-examination of the diversity of haemosporidian parasites, using molecular tools, has generally led to rearrangements of traditional classifications. In this study, we explored the diversity of haemosporidian parasites infecting two genera of vertebrates living in the forests of Gabon, by analyzing a collection of 128 samples of reptiles and birds. We found that samples from two tortoise species (Pelusios castaneus and Kinixys erosa) and three bird species (Turtur afer, Ceratogymna atrata and Agelastes niger) were infected by Haemocystidium spp...
May 16, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28431211/oxyuricassis-coronatus-n-gen-n-sp-and-o-hexaspinatus-n-sp-oxyurida-pharyngodonidae-parasites-of-lasiancistrus-saetiger-siluriformes-loricariidae-in-freshwater-rivers-of-the-brazilian-amazon
#19
Allan Rodrigo Oliveira Rodrigues, Jeannie Nascimentodos Santos, Adriano Penha Furtado, Francisco Tiago Vasconcelos Melo
A new nematode genus is described from intestines of Lasiancistrus saetiger Ambruster from freshwater rivers in the Brazilian Amazon. Oxyuricassis n. gen. is characterized by, a cephalic hood, buccal cavity small , long oesophagus with a well-developed isthmus and a conical tail with spines. Two new species are described: O. coronatus n. sp. is characterized by the absence of lateral alae, a conical tail with truncated extremity with sclerotized projections spine-like around the tail tip, male of O. coronatus has a caudal alae sucker-like...
April 21, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28431210/exotic-gill-lice-species-copepoda-lernaeopodidae-salmincola-spp-infect-rainbow-trout-oncorhynchus-mykiss-and-brook-trout-salvelinus-fontinalis-in-the-southeastern-united-states
#20
Carlos F Ruiz, Jacob M Rash, Doug A Besler, Jackson R Roberts, Micah B Warren, Cova R Arias, Stephen A Bullard
Salmincola californiensis infected 25 of 31 (prevalence 0.8; intensity 2-35 [mean 6.6 ± standard deviation 7.7; n = 25]) rainbow trout, Oncorhynchus mykiss, from a private trout farm connected to the Watauga River, North Carolina. Salmincola edwardsii infected all of 9 (1.0; 2-43 [9.3 ± 13.0; 9]) brook trout, Salvelinus fontinalis, from Big Norton Prong, a tributary of the Little Tennessee River, North Carolina. Both lernaeopodids are well-known salmonid pathogens but neither is native to, nor has been previously taxonomically confirmed from, the southeastern United States...
April 21, 2017: Journal of Parasitology
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