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Parasitology Research

Krajana Tainchum, Sharif Shukri, Gérard Duvallet, Lucas Etienne, Philippe Jacquiet
Stomoxys calcitrans (Diptera: Muscidae), is an important vector of lumpy skin disease and bovine besnoitiosis in Europe. Control of this biting fly could represent a keystone in the containment of this emerging disease. Reports of insecticide resistance in S. calcitrans are scarce in Europe. Therefore, the purpose of this study was to evaluate the phenotypic susceptibility to deltamethrin, cypermethrin and phoxim of five wild S. calcitrans populations from southwestern France, where transmission of bovine besnoitiosis is very prevalent...
October 15, 2018: Parasitology Research
Jean-Marc Chavatte, Grégory Karadjian, Irène Landau
Here, we report new insights on the erythrocytic murine parasite Anthemosoma garnhami, which was first described from Ethiopia in 1969. Its classification has been debated for years, as this parasite presents some intermediate characters between the Haemosporidia and the Piroplasmida. Based on electron-microscopy, immunological, biochemical and drug sensitivity studies, it was finally assigned to the piroplasms, in the family Anthemosomatidae. In 1985, Anthemosoma sp. was reported from Namibia, and since then, no investigation has involved this parasite...
October 15, 2018: Parasitology Research
Anna Szczepańska, Dorota Kiewra, Katarzyna Guz-Regner
Bacillus thuringiensis is a highly specific entomopathogenic microorganism. Although defined as having properties which work against insects, its role in the control of tick populations is still insufficiently known. In our bioassay, four environmental strains of B. thuringiensis, along with one commercially available product (Vectobac), have been used against ticks. Vectobac turned out to be ineffective in the biocontrol of ticks; however, two of environmental B. thuringiensis strains proved to be efficient against both Ixodes ricinus and Dermacentor reticulatus...
October 15, 2018: Parasitology Research
Barbara Paoletti, Leonardo Della Salda, Angela Di Cesare, Raffaella Iorio, Alberto Vergara, Camilla Fava, Alberto Olivastri, Giorgia Dessì, Antonio Scala, Antonio Varcasia
Despite the wide distribution of wild boar populations in Italy and the increase of its diffusion in urbanized areas, only one case report has described the occurrence of Echinococcus granulosus s.l. in a wild boar from Marche (Central Italy). The present study investigated the presence of E. granulosus sensu lato with an epidemiological survey on wild boars from central Italy that had been killed during hunting season. Seven hundred sixty-five (765) adult wild boars were examined during the 2016-2017 hunting season...
October 12, 2018: Parasitology Research
Nutnicha Suphakhonchuwong, Wanna Chaijaroenkul, Kanchana Rungsihirunrat, Kesara Na-Bangchang, Jiraporn Kuesap
Malaria is a significant public health problem in several tropical countries including Thailand. The prevalence of Plasmodium vivax infection has been increasing in the past decades. Plasmodium vivax merozoite surface protein (PvMSP) gene encodes a malaria vaccine candidate antigen. Its polymorphic nature leads to antigenic variation, the barrier for vaccine development, drug resistance, and potential for multiple-clone infections within the malaria patients. The objective of this study was to investigate the genetic diversity of PvMSP1 and PvMSP3 gene in P...
October 10, 2018: Parasitology Research
Tomáš Macháček, Libuše Turjanicová, Jana Bulantová, Jiří Hrdý, Petr Horák, Libor Mikeš
Cercarial dermatitis (CD) is an allergic skin disease that rises in consequence of infection by invasive stages (cercariae) of trematodes of the family Schistosomatidae. CD has been considered a re-emerging disease, human cases have been reported from all continents, and tourism-threatening outbreaks occur even in frequented recreational areas. Although the symptoms of CD are generally known, the data on immune response in human patients are sporadic and incomprehensive. In the present study, we attempted to correlate the symptoms, personal history, and time course of CD in human patients with differential cell counts, dynamics of selected cytokines, and dynamics and quality of antibody response...
October 9, 2018: Parasitology Research
Fernanda Ramos, Camila Balconi Marques, Caroline Zamperete Reginato, Fernando de Souza Rodrigues, Luis Antônio Sangioni, Fernanda Silveira Flôres Vogel, Luciana Pötter
The aim of the present study was to evaluate the effects of treatment with different anthelmintic compounds on the productivity of naturally infected calves and the economic viability of these treatments within extensive breeding systems employing different nutritional strategies after weaning. For this purpose, 4 farms with 42-60 calves naturally infected with gastrointestinal nematodes were selected. The calves were distributed into 6 groups (7-10 animals each) per farm and treated with ivermectin 1%, ivermectin 3...
October 9, 2018: Parasitology Research
Gema Alama-Bermejo, Jesús S Hernández-Orts
The Patagonian seabass Acanthistius patachonicus (Jenyns, 1840) (Serranidae) is a marine fish valued for commercial and sport fisheries from Argentina. We report a new myxosporean (Cnidaria: Myxozoa) infecting the urinary system of the Patagonian seabass from San Antonio Bay, San Matías Gulf, on the Atlantic Ocean. The mature myxospores were subspherical, 8.2-11.0 μm × 7.9-11.0 μm and 7.7-9.0 μm in thickness; two subspherical polar capsules, 2.4-3.8 μm × 2.3-3.6 μm, with 3 to 4 turns of the polar tubule; openings on different valves in almost opposite directions...
October 8, 2018: Parasitology Research
Nelly Raquel Gonzalez-Arenas, Guiehdani Villalobos, Gie Bele Vargas-Sanchez, Christian Alberto Avalos-Galarza, Laura Margarita Marquez-Valdelamar, Maria Elena Ramirez-Miranda, Angelica Olivo-Diaz, Mirza Romero-Valdovinos, Fernando Martinez-Hernandez, Pablo Maravilla
The potential role of Blastocystis as a pathogen is controversial because it is found in both symptomatic and asymptomatic carriers. Since Cathepsin B has been identified as a main virulence factor that contributes to the pathogenesis of this parasite, the purpose of this study was to analyze the genetic polymorphisms of cathepsin B from Blastocystis from patients with irritable bowel syndrome and from asymptomatic carriers. DNA from fecal samples of both groups, which were previously genotyped by 18S sequencing, was used to amplify a fragment of the cathepsin B gene...
October 8, 2018: Parasitology Research
Jie Cui, Yangnan Zhao, Yali Sun, Long Yu, Qin Liu, Xueyan Zhan, Muxiao Li, Lan He, Junlong Zhao
Babesia gibsoni is a protozoan parasite responsible for the majority of reported cases of canine babesiosis in China. Currently, microscopic examination of the Giemsa-stained thin blood smears is the main diagnosis method in clinic. Here, we report the recombinase polymerase amplification-lateral flow (LF-RPA) dipstick detection method for targeting B. gibsoni cytochrome c oxidase subunit I (cox I) gene. The reaction takes only 20-30 min under isothermal temperatures between 30 and 45 °C. Specificity was evaluated using DNA from related apicomplexan parasites and their host, while the sensitivity was calculated based on the DNA from the experimental B...
October 6, 2018: Parasitology Research
Kari M Kaunisto, André Morrill, Mark R Forbes
Studies on parasite-mediated selection often focus on single parasite taxa infecting single species of hosts. However, host populations experience infections by multiple parasite taxa simultaneously; coinfection is expected to influence how host- and/or parasite-related factors affect host exposure and susceptibility to various parasites, and the resulting patterns of infection. We sampled adult dragonflies from a population of Leucorrhinia intacta (Hagen) in eastern Ontario, Canada. Dragonflies were exposed to parasitism by both water mites (Arrenuridae) and gregarines (Eugregarinidae)...
October 4, 2018: Parasitology Research
Geraldine Ramallo, Charles Bursey, Stephen Goldberg
The species Hedruris mucronifer Schuurmans Stekhoven, 1952 parasite of Telmatobius schreiteri from Tafí del Valle, Tucumán, Argentina is herein redescribed. The main morphological characters used for its identification are illustrated. The lectotype and paralectotype are designated, respectively. The specific epithet of the host is rectified.
October 3, 2018: Parasitology Research
M A Moustafa, H S Mossalem, R M Sarhan, A A Abdel-Rahman, E M Hassan
Schistosomiasis seriously affects human health in tropical regions. Its prevention is more important than treatment, raising the need for effective control methods. Recently, the role of nanomaterials in medical science has been growing. The present study aimed to evaluate the potential effects of silver (Ag) and gold (Au) nanoparticles (NPs) on Biomphalaria alexandrina snails and Schistosoma mansoni cercariae in vitro and to assess their effects on the infectivity of cercariae in vivo. The in vitro study proved that Ag and Au NPs were effective in killing B...
October 3, 2018: Parasitology Research
Alfredo M V Rodrigues, Argun Akif Özak, Luis M H Silva, Geoffrey Allan Boxshall
A new species of caligid copepod, Caligus mulli n. sp., is described based on specimens collected from surmullet Mullus surmuletus Linnaeus from Atlantic waters off the Azores, Portugal, and from red mullet Mullus barbatus barbatus (Linnaeus) caught in the Mediterranean Sea, off the south-eastern coast of Turkey. Sixteen specimens (both sexes) were collected from the gill cavity of M. surmuletus, and one female was collected from the gill cavity of M. barbatus barbatus. The new species is described from both fish hosts...
September 29, 2018: Parasitology Research
Letícia Pereira Úngari, André Luiz Quagliatto Santos, Lucia Helena O'Dwyer, Maria Regina Lucas da Silva, Thais Carneiro Rodrigues Santos, Maria Júlia Rodrigues da Cunha, Rogério de Melo Costa Pinto, Márcia Cristina Cury
Species of Hepatozoon are parasites frequently recorded in snakes. The species identification of this genus was based mostly on the gametocyte morphology and morphometric calculations. For more reliable results, molecular characterization, an initial step for the correct identification of Hepatozoon species, has been used. This study aimed to determine the prevalence and identification of Hepatozoon species in captive snakes from Brazil. To that end, morphological, morphometric, and molecular data were obtained...
September 28, 2018: Parasitology Research
M Khaleghi Einakchi, N Sedaghat Sharifi, J Khoshnegah, M Heidarpour
The objective of the present study was to investigate the role of thyroid hormones and lipid profile in development and outcome of canine visceral leishmaniosis (CVL). We therefore studied the relationships between blood serum thyroid hormones [total T4, free T4, total T3, and free T3], lipids, and lipoproteins [total cholesterol, triglyceride, low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C)] and clinical status in dogs naturally infected with Leishmania infantum...
September 27, 2018: Parasitology Research
Jacqueline Abrunhosa, José Ledamir Sindeaux-Neto, Igor Hamoy, Edilson R Matos
Henneguya quelen n. sp. (Myxosporea) is described from the kidney of the silver catfish, Rhamdia quelen (Quoy & Gaimard, 1824), from Marajó Island. In all, 40% of the 57 silver catfish collected from the Paracauari River in the municipality of Salvaterra presented cysts in the kidney. The cysts were whitish, spherical, and 0.45 mm in diameter. The histological analyses revealed tubular renal compression and cellular degeneration in the area adjacent to the xenomas. The spores are ellipsoid, with well-marked valves, caudal projection, and two elongated polar capsules of equal size...
September 25, 2018: Parasitology Research
Darya Krupenko, Andrej A Dobrovolskij
Digenea usually use ventral sucker for sustainable attachment within intestine of their definitive vertebrate host. However, if the ventral sucker is absent or poorly developed, the means of attachment are unclear. We investigated attachment and locomotion in such digeneans: three species of the family Microphallidae (Microphallus piriformes, M. pygmaeus, and Levinseniella brachysoma) and two species of the family Heterophyidae (Cryptocotyle concava and C. lingua). Their tegumental spines and musculature were described with use of fluorescent actin staining, confocal microscopy, and scanning electron microscopy...
September 25, 2018: Parasitology Research
Saskia Dolinská, Dávid Drutovič, Patrik Mlynárčik, Alžbeta Königová, Ladislav Molnár, Michaela Urda Dolinská, Gabriela Štrkolcová, Marián Várady
Serratospiculiasis is a parasitic disease caused by filariid nematodes of the genus Serratospiculum that parasitise the air sacs of various species of falcons, bald eagles and Cooper's hawks around the world. An infection with Serratospiculum was recently confirmed in a nonspecific host, the great tit, in Slovakia. Parasitic material from this host was fixed for molecular analysis. Nematode found in the air sacs from a captive-bred gyrfalcon was also stored. Analysis of small subunit (18S) ribosomal DNA (18S rDNA) gene indicated that sequences from Serratospiculum sp...
September 22, 2018: Parasitology Research
Biao Jiang, Yanwei Li, Anxing Li
Cryptocaryon irritans is a ciliated protozoan parasite infecting the gills and skin of almost all marine teleosts, resulting in severe disease. Notably, C. irritans is unable to cause significant pathogenesis in rabbitfish, Siganus oramin, a well-known less susceptible host. However, little is known about the development of C. irritans in rabbitfish. Thus, in the present study, rabbitfish were artificially infected with C. irritans at a 1/2 maximal tolerance dose (MTD), using the susceptible host, large yellow croaker, Larimichthys crocea, as a control...
September 20, 2018: Parasitology Research
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