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Journal of Parasitology

Stephen S Curran, Eric E Pulis, Michael J Andres, Robin M Oversteet
Two cryptic species of haploporid digeneans belonging in Saccocoelioides are described from Costa Rica; one from a poeciliid fish Poecilia gillii and the other from a characid fish, Astyanx aeneus. Traditional morphological features are examined and found to be largely inefficient for differentiate among new species and 20 New World congeners. Comparison of ribosomal DNA sequences among the 2 new species, 2 North American, 4 Middle American, and 3 South American species of Saccocoelioides, including the type-species Saccocoelioides nanii from Argentina and Saccocoelioides sogandaresi from Texas, is effective for differentiating among these species...
March 16, 2018: Journal of Parasitology
Colleen Edith Archer, M Corrie Schoeman, Christopher Charles Appleton, Samson Mukaratirwa, Karen J Hope, Glenda Beverly Matthews
This study investigated associations between Trypanosoma lewisi; Xenopsylla cheopis, a common cyclical vector of T. lewisi; Polyplax spinulosa, a reported mechanical vector; and Laelaps ecidnina and L. lamborni, two rodent mites of Rattus norvegicus in Durban. Three hundred and seventy nine R. norvegicus were live-trapped at 48 sites in 4 locality types of Durban during a one year period. Rats were euthanized, cardiac blood was taken to check for hemoparasites and ectoparasites were removed for identification...
March 13, 2018: Journal of Parasitology
Michael Tessler, David Marancik, Donald Champagne, Alistair Dove, Alvin Camus, Mark E Siddall, Sebastian Kvist
Leeches (Annelida: Hirudinea) possess powerful salivary anticoagulants and, accordingly, are frequently employed in modern, authoritative medicine. Members of the almost exclusively marine family Piscicolidae account for 20% of leech species diversity, and feed on host groups (e.g., sharks) not encountered by their freshwater and terrestrial counterparts. Moreover, some species of Ozobranchidae feed on endangered marine turtles and have been implicated as potential vectors for the tumor-associated turtle herpesvirus...
March 5, 2018: Journal of Parasitology
John E Ubelaker, Gilbert A Castro
No abstract text is available yet for this article.
March 1, 2018: Journal of Parasitology
Muhammad Rashid, Akbar Haroon, Muhmmad Imran Rashid, Saeed Khalid, Ahmad Liaquat, Abdullah Saghir, Shehzad Wasim, Islam Saher, Farooqi Shahid
The dairy industry in Pakistan is booming and investors are anxious to fund dairy farms that are using high milk producing (exotic) cattle breeds such as Holsteins that are not native to the country. Unfortunately, the benefits of increased milk production do not provide resistance to pathogens present in regions where the exotic breeds are introduced. Therefore, the current study was conducted to evaluate the economic impact of Theileria annulata on a commercial Holstein dairy farm in the District of Ranjanpur, in the Province of Punjab, Pakistan...
February 27, 2018: Journal of Parasitology
Hung Manh Nguyen, Yulia V Tatonova, Henry Madsen
Domestic cats are a final host for some hepatic trematodes and cat meat is used for human consumption in several parts of Northern Vietnam. Since there is no tradition for commercial cat rearing in the area, cats are purchased alive from other areas as well, i.e. Southern Vietnam and neighboring countries and brought to slaughter houses. This uncontrolled trade in live cats could pose a risk for spread of various parasites including hepatic trematodes. Hence in this study, we investigated the infections by hepatic trematodes in cats from the slaughter houses...
February 21, 2018: Journal of Parasitology
Songtao Ding, Wei Huang, Qizhong Qin, Jun Tang, Handeng Liu
Among approximately 14 human-pathogenic microsporidian species, Enterocytozoon bieneusi is the most common. It can inhabit the small intestines, causing chronic diarrhea and wasting syndrome. Until now, determining prevalence and the corresponding genotypes of E. bieneusi in humans have been performed only in a few provinces of China. Herein, 93 fecal specimens were collected from diarrheic children in Chongqing. By PCR and sequencing of the internal transcribed spacer (ITS) region of the E. bieneusi rDNA sequence, we found 11 (11...
February 19, 2018: Journal of Parasitology
Agustin Fernández-Salas, Miguel Angel Alonso Díaz, Rogelio Alejandro Alonso Morales, Roberto Lezama-Gutierrez, José Antonio Cervantes-Chávez
The objectives of the present study were to isolate Beauveria bassiana strains from cattle farms soils, to analyze the phylogenetic relationships among the isolated fungi strains, and to determine the acaricidal effect of B. bassiana isolates on Rhipicephalus microplus engorged ticks, resistant or susceptible to chemical acaricides. Six strains of Beauveria bassiana were obtained and isolated from cattle farms soils by Galleria bait method in Mexican tropics and the acaricidal effect was assessed against 2 populations of R...
February 19, 2018: Journal of Parasitology
Renn Tumlison, Allison Surf
Adult female Guinea worms (Dracunculus spp.) usually are reported to occur singly in the extremities of their hosts, from which they deliver their larvae through fistulae in the host's skin into the water. We visually examined for presence of worms in the fascia of the limbs of skinned carcasses of 184 river otters (Lontra canadensis) harvested in Arkansas, and report observations of cysts on wrists and ankles found on 12 otters. Cysts averaged 15.6 X 24.6 mm in size, were round to oval, and contained masses of up to 19 adult female Dracunculus sp...
February 19, 2018: Journal of Parasitology
Rosario Briosio-Aguilar, Hudson Alves Pinto, Maria Amparo Rodríguez-Santiago, Karina López-García, Martin Garcia-Varela, Gerardo Perez-Ponce de Leon
The phylogenetic position of Clinostomum heluans Braun, 1899 within the genus Clinostomum Leidy, 1856 is reported in this study based on sequences of the barcoding region of the mitochondrial cytochrome c oxidase subunit 1 gene (COX1). Additionally, molecular data are used to link the adult and the metacercariae of the species. The metacercariae of C. heluans were found encysted infecting the cichlid fish Australoheros sp. in Minas Gerais, Brazil, whereas the adults were obtained from the mouth cavity of the Great White egret Ardea alba, in Campeche, Mexico...
February 16, 2018: Journal of Parasitology
Terrence Miller, Samantha Barnett, Jamie Seymour, Timothy Jenkins, Marissa McNamara, Robert Douglas Adlard
Two new species of myxosporeans are described from the gall bladders of Estuarine Stonefish, Synanceia horrida, and Reef Stonefish, Synanceia verrucosa, from localities off Cairns, in tropical north Queensland (QLD) and in Moreton Bay in southern QLD, Australia. Sphaeromyxa horrida n. sp. can be distinguished from congeners in the morphologically distinct "balbianii" species group within Sphaeromyxa based on morphometric differences in length and width of mature spores, length and width of polar capsules and unique SSU rDNA sequence composition relative to other taxa...
February 16, 2018: Journal of Parasitology
Ralph Vanstreels, Chris H Gardiner, Michael J Yabsley, Liandrie Swanepoel, Cristiane K M Kolesnikovas, Rodolfo P Silva-Filho, Ana C Ewbank, José L Catão-Dias
The Magellanic Penguin (Spheniscus magellanicus) is native to Argentina, Chile and the Falkland/Malvinas islands and is a regular winter migrant in Uruguayan and Brazilian coastal waters. The species is known to be susceptible to a variety of gastrointestinal nematodes, cestodes, trematodes and acanthocephalans, as well as renal trematodes and pulmonary nematodes. Schistosomes (Platyhelminthes, Trematoda, Schistosomatidae) and microfilariae (Nematoda, Secernentea, Onchocercidae) were histologically identified in Magellanic Penguins (Spheniscus magellanicus) that died while under care at rehabilitation centers in southern Brazil...
February 9, 2018: Journal of Parasitology
Perla Tedesco, Andrea Gustinelli, Monica Caffara, Pierpaolo Patarnello, Antonio Terlizzi, Maria L Fioravanti
Raphidascarididae are among the most abundant and widespread parasitic nematodes in the marine environment. Knowledge about the life-cycle of most raphidascaridid species is still poorly known and information about their distribution and host range is lacking in many geographical areas, as well as the taxonomy of several species. A study of larval and adult stages of Hysterothylacium fabri (Rudolphi, 1819) Deardorff & Overstreet, 1980 (Nematoda: Raphidascarididae) infecting the striped goatfish Mullus surmuletus Linnaeus, 1758 (Mullidae) and the Mediterranean stargazer Uranoscopus scaber Linnaeus, 1759 (Uranoscopidae) from Ionian Sea (central Mediterranean) has been carried out by combining light and scanning electron microscopy observations and molecular analyses through PCR-RFLP and sequencing of the ITS rDNA gene...
February 9, 2018: Journal of Parasitology
Igor V Babkin, Artem Y Tikunov, Irina Golovljova, Tikunova V Nina
In southern regions of Western Siberia, I. persulcatus ticks co-exist with I. pavlovskyi. Both tick species have similar morphology; natural hybridization of I. persulcatus and I. pavlovskyi ticks has been observed. To investigate a role of I. pavlovskyi ticks and I. persulcatus/I. pavlovskyi hybrids as vector, correct identification of tick species is necessary. The nuclear crt gene might be useful in distinguishing I. persulcatus from I. pavlovskyi ticks. Genetic variability in this gene has been previously studied by Xu et al...
February 8, 2018: Journal of Parasitology
Grace Patricia Servat, Roxana Cruz, Joyce Vitorino, Jessica Deichmann
We document chigger mite (Acari: Trombiculidae) ectoparasitic infestation (prevalence and intensity) on a population of Catharus ustulatus (Turdidae) wintering at a site in southeastern Peru undergoing development for natural gas exploration (PAD A). We compare prevalence (i.e., the proportion of individuals infested by chigger mites) and intensity (i.e., the average number of larvae and larvae clusters in infested individuals) at forest edge (< 100 m) and interior (> 100 m) from PAD A, as variation in biotic (e...
February 8, 2018: Journal of Parasitology
Goudarz Molaei, Theodore G Andreadis, John F Anderson, Kirby C Stafford
We report the importation into Connecticut, U.S.A. of an exotic tick, Hyalomma truncatum (Koch) (Acari: Ixodidae) on a human with recent travel history to Africa. The tick was identified using key morphological characters and through DNA sequencing. This case report highlights continuing risk associated with the importation of exotic tick vectors of medical and veterinary significance on international travelers returning to the United States from abroad.
February 7, 2018: Journal of Parasitology
Chris T McAllister, Vasyl V Tkach, David Bruce Conn
Free pre-tetrathyridia of Mesocestoides sp. are described, for the first time, from samples obtained from the coelomic cavity of a ground skink, Scincella lateralis from Oklahoma, USA. Closer examination of these early stage tapeworms revealed they were transitional metamorphosis stages between a post-hexacanth procercoid form to the full metacestode of Mesocestoides. A series of transitional stages from before the suckers and apical organ are developed, through full development of both structures were found...
February 5, 2018: Journal of Parasitology
Max Rondon Werneck, Adriana Mastrangelli, Renato Velloso, Hassan Jerdy, Eulógio C Q Carvalho
This paper reports the first discovery of Plesiochorus cymbiformis (Digenea: Gorgoderidae) from a loggerhead turtle [Caretta caretta (Testudines, Cheloniidae)] in Brazil and describes the histological findings of related injuries to the urinary bladder.
February 2, 2018: Journal of Parasitology
Kelly Lynne Weinersmith, Caroline E Brown, Kira B Clingen, Marie C Jacobsen, Leah B Topper, Ryan F Hechinger
Parasites often use external cues to identify and move toward environments where they are likely to encounter suitable hosts. The trematode parasite Euhaplorchis californiensis produces cercariae that emerge from California horn snails (Cerithideopsis californica (=Cerithidea californica)) to infect California killifish (Fundulus parvipinnis) as second intermediate hosts. Based on work on a congeneric Euhaplorchis species from Florida, and based on the ecology of its killifish host, we hypothesized that E. californiensis cercariae in southern California estuaries are positively phototactic and negatively geotactic, using both sunlight and gravity to guide their movement to the upper water column...
January 30, 2018: Journal of Parasitology
Muneaki Hashimoto, Masahiko Numata, Shouki Yatsushiro, Yusuke Ido, Masato Tanaka, Kazuaki Kajimoto, Masatoshi Kataoka
The cell microarray chip is a polystyrene plate with 20,944 microchambers and is used to detect red blood cells (RBCs) infected with the causative agent of malaria, Plasmodium. Plasmodium-infected red blood cells (iRBCs) stained with a nuclear staining dye (SYTO 21) form a monolayer on the bottom of the microchambers, and about 130 RBCs were accommodated in each such microchamber of the chip. The iRBCs in the RBC monolayer (containing 2.7 million RBCs) can be identified using a fluorescence detector, and the infection rate can be calculated by counting the number of fluorescent positive RBCs...
January 29, 2018: Journal of Parasitology
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