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Veterinary Parasitology

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https://www.readbyqxmd.com/read/28215876/in-vitro-lectin-binding-to-the-outer-surface-of-spirocerca-lupi-at-different-life-stages
#1
I Aroch, I Arogeti, A Marcovics, Y Spiegel, E Lavy
Spirocerca lupi is the esophageal nematode of dogs. Early, transient eosinophilia occurs in experimentally infected dogs, but is absent in advanced cases, suggesting that the nematode evades the dog's immune system. Lectins are proteins or glycoproteins of plant or animal origin, binding different saccharides, with varying specificities and avidities, used to characterize surface haptens in plant and animal parasitic helminths. This study investigated the in vitro binding of six lectins (Concanavalin A [ConA], wheat germ agglutinin [WGA], peanut agglutinin [PNA], soybean agglutinin [SBA], Dolichus biflorus agglutinin [DBA] and Ulex earopaeus agglutinin I [UEA]) to the surface of S...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215875/occurrence-and-molecular-genotyping-of-giardia-duodenalis-and-cryptosporidium-spp-in-wild-mesocarnivores-in-spain
#2
Marta Mateo, Marta Hernández de Mingo, Aida de Lucio, Lucía Morales, Ana Balseiro, Alberto Espí, Marta Barral, José Francisco Lima Barbero, Miguel Ángel Habela, José L Fernández-García, Rafael Calero Bernal, Pamela C Köster, Guillermo A Cardona, David Carmena
There is a surprisingly scarce amount of epidemiological and molecular data on the prevalence, frequency, and diversity of the intestinal protozoan parasites Giardia duodenalis and Cryptosporidium spp. in wildlife in general and mesocarnivore species in particular. Consequently, the extent of the cyst/oocyst environmental contamination attributable to these wild host species and their potential implications for public veterinary health remain largely unknown. In this molecular epidemiological survey a total of 193 individual faecal samples from badgers (Meles meles, n=70), ferrets (Mustela putorius furo, n=2), genets (Genetta genetta, n=6), Iberian lynxes (Lynx pardinus, n=6), beech martens (Martes foina, n=8), mongooses (Herpestes ichneumon, n=2), otters (Lutra lutra, n=2), polecats (Mustela putorius, n=2), red foxes (Vulpes vulpes, n=87), wildcats (Felis silvestris, n=2), and wolves (Canis lupus, n=6) were obtained from road-killed, hunted, and accidentally found carcasses, and from camera-trap surveys or animals entering rescue shelters, during the period December 2003-April 2016...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215874/first-paleoparasitological-record-of-digenean-eggs-from-a-native-deer-from-patagonia-argentina-cueva-parque-diana-archaeological-site
#3
Beltrame María Ornela, Tietze Eleonor, Pérez Alberto Enrique, Sardella Norma Haydeé
Eggs representative of a digenean species were found in coprolites belonged to an endemic deer from Patagonia. Samples were collected from the archaeological site named "Cueva Parque Diana". This site is a cave located at the Lanín National Park, Neuquén Province, Argentina. The coprolites were dated from 2370±70 to 580±60 years B.P. The eggs were ellipsoidal, operculated, yellowish and thin-shelled. Measurements (n=65) ranged from 120.0 to 142.5 (133.2±6.53) μm long and 62.5 to 87.5 (72.6±6.15) μm wide...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215873/can-the-amount-of-digestible-undegraded-protein-offered-to-ewes-in-late-pregnancy-affect-the-periparturient-change-in-resistance-to-gastrointestinal-nematodes
#4
Rocco S Sebastiano, Torres Sweeney, Timothy W J Keady, James P Hanrahan, Barbara Good
Ewes experience a temporary decline in resistance to gastrointestinal nematodes (GIN) during the periparturient period, characterised by a rise in faecal egg count (FEC) that represents a major source of pasture contamination for naïve progeny. The aim of this study was to assess the effect of level of supplementation with digestible undegraded protein (DUP) during the last 6 weeks of pregnancy on periparturient FEC and the performance of ewes with a naturally acquired parasite infection. Eighty-five Belclare and Belclare x Scottish Blackface twin/triplet-bearing ewes were allocated to 1 of 4 dietary groups representing the combination of 2 concentrates (DUP concentration 29 and 94g/kg dry matter) with 2 levels of concentrate during the final 6 weeks of gestation (18 and 30kg in total for ewes with twins; 24 and 35kg for ewes with triplets)...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215872/detection-of-specific-antibodies-in-cats-infected-with-the-lung-nematode-aelurostrongylus-abstrusus
#5
Eva-Maria Zottler, Christina Strube, Manuela Schnyder
Feline aelurostrongylosis, caused by the metastrongylid nematode Aelurostrongylus abstrusus, is an underestimated respiratory parasitosis. Its diagnosis currently mainly relies on the isolation of first stage larvae from fresh faecal samples. The aim of our study was to develop a serological test for the detection of specific antibodies against A. abstrusus by ELISA. We used recombinant major sperm protein (MSP) of the bovine lungworm Dictyocaulus viviparus as detection antigen and evaluated two different ELISA plates (Maxisorp and Immobilizer™ Amino-plate, Nunc Roskilde, Denmark) with two different enzyme systems [alkaline phosphatase (AP) and horseradish peroxidase (HRP)]...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215871/disease-behaviours-of-sows-naturally-infected-with-taenia-solium-in-tanzania
#6
Chiara Trevisan, Maria Vang Johansen, Ernatus Martin Mkupasi, Helena Aminel Ngowi, Björn Forkman
Neurocysticercosis (NCC) is a disease caused by the zoonotic parasite Taenia solium lodging in the central nervous system. Both humans and pigs can get NCC. The impact of the disease in pigs has so far been little explored. The aim of this study was to describe the effect of NCC on social and feeding behaviours as well as the pattern of activity as indicators of reduced welfare in naturally infected sows. In total 13 T. solium naturally infected and 15 non-infected control sows were videotaped for 2 consecutive weeks using close circuit television cameras at research facilities at Sokoine University of Agriculture, Morogoro, Tanzania...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215870/acute-fatal-sarcocystosis-hepatitis-in-an-indo-pacific-bottlenose-dolphin-tursiops-aduncus-in-hong-kong
#7
R Calero-Bernal, N F Mauroo, S W Hui, T Kuiken, M W G van de Bildt, A W de Jong, A D M E Osterhaus, L Sims, A Gendron-Fitzpatrick, D Carmena, C K Cerqueira-Cézar, B M Rosenthal, J P Dubey
Unlike most species in the genus Sarcocystis, Sarcocystis canis has a broad intermediate host range. Its life cycle is incompletely known and most reports are from the USA. Here we report fatal hepatitis in a 4year old male Indo-Pacific bottlenose dolphin (Tursiops aduncus) from Hong Kong associated with a S. canis-like infection. Diagnosis was made based on clinical presentation, histopathology, transmission electron microscopy (TEM), and molecular characterization. Microscopically, S. canis-like like infection was confined to the liver...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215869/a-novel-assembly-pheromone-trap-for-tick-control-in-dog-kennels
#8
R K Anish, Bhaskaran Ravi Latha, Giriprasath Ramanathan, Uma Tirichurapalli Sivagnanam, C Sreekumar, V Leela
A novel ecofriendly sticky tick trap device for the control of dog tick Rhipicephalus sanguineus using gold nanoparticle assembly pheromone complex as a bait was developed. Assembly pheromones comprising of guanine, xanthine and adenine in the ratio of 25:1:1 was encapsulated in gold nanoparticle. The response of the different stages of unfed R. sanguineus ticks was evaluated using petridish bioassay. Statistical analysis was done using chi-square test. Petridish bioassay with unfed stages of R. sanguineus revealed that 100% of the larvae, nymph and adults were attracted to assembly pheromone nanogold complex within 24h...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215868/libyostrongylus-douglassii-strongylida-trichostrongylidae-in-ostrich-struthio-camelus-farms-from-colombia
#9
Guillermo A Mariño-González, Alejandro Ramírez-Hernández, Jesús A Cortés-Vecino
Ostrich farming is an important livestock industry in different world regions with a diverse offer of products and services. In Colombia, as in other countries, this market led the importation of animals from countries like Canada, United States of America and South Africa for breeding objectives. With the animals, specific pathogens for these ratites could be introduced. Libyostrongylus spp. is a strongylid nematode with worldwide distribution, which can induce a severe disease and mortality in infected animals...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215867/seroepidemiology-and-risk-assessment-of-toxoplasma-gondii-infection-in-captive-wild-birds-and-mammals-in-two-zoos-in-the-north-of-portugal
#10
Ana Tidy, Sara Fangueiro, Jitender P Dubey, Luís Cardoso, Ana Patrícia Lopes
Toxoplasmosis, caused by the protozoan Toxoplasma gondii, is one of the most widespread zoonoses in the world. It can affect most warm-blooded animals but only felids are its definitive hosts. We determined seroprevalence and associated risk factors in birds and mammals kept in two zoological parks in northern Portugal. Sera from 77 birds and 42 mammals were assayed for the presence of T. gondii antibodies by the modified agglutination test (MAT, cut-off titre 20); 34.5% (41/119) were seropositive. All seropositive animals were apparently healthy except one seropostive mandarin (Aix galericulata) which had chorioretinitis...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215866/morphological-and-molecular-characterization-of-an-uninucleated-cyst-producing-entamoeba-spp-in-captured-rangeland-goats-in-western-australia
#11
Khalid Al-Habsi, Rongchang Yang, Una Ryan, Caroline Jacobson, David W Miller
Uninucleated Entamoeba cysts measuring 7.3×7.7μm were detected in faecal samples collected from wild Rangeland goats (Capra hircus) after arrival at a commercial goat depot near Geraldton, Western Australia at a prevalence of 6.4% (8/125). Sequences were obtained at the 18S rRNA (n=8) and actin (n=5) loci following PCR amplification. At the 18S locus, phylogenetic analysis grouped the isolates closest with an E. bovis isolate (FN666250) from a sheep from Sweden with 99% similarity. At the actin locus, no E...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215865/triple-trouble-invasive-poeciliid-fishes-carry-the-introduced-tilapia-pathogen-gyrodactylus-cichlidarum-in-the-mexican-highlands
#12
Adriana García-Vásquez, Ulises Razo-Mendivil, Miguel Rubio-Godoy
As part of ongoing surveys of the gyrodactylid parasite fauna of freshwater fishes in Mexico, we recorded the infection of three species of poeciliids (Poecilia mexicana, Poeciliopsis gracilis, and Pseudoxiphophorus bimaculatus [syn.=Heterandria bimaculata]) with Gyrodactylus cichlidarum, a monogenean parasite of cichlid fishes, which has been co-introduced globally with its translocated, African "tilapia" hosts. This tilapia pathogen was found on poeciliid fishes both within their native distribution range in the Gulf of Mexico slope, as well as on invasive species artificially introduced to the Mexican highlands, to rivers draining into the Pacific Ocean...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215864/regulatory-effects-of-echinococcus-multilocularis-extracellular-vesicles-on-raw264-7-macrophages
#13
Yadong Zheng, Xiaola Guo, Meng Su, Aijiang Guo, Juntao Ding, Jing Yang, Haitao Xiang, Xiaoan Cao, Shaohua Zhang, Mazhar Ayaz, Xuenong Luo
Extracellular vesicles (EVs) play a role in intercellular communications via exchanging biological molecules, being involved in host-parasite interplay. Little is to date known about E. multilocularis EVs and their biological activities. Here spherical EVs secreted by E. multilocularis metacestodes were shown to range predominately from 34nm to 95nm in diameter. A total of 433 proteins were identified in the EVs, and the proteins involved in binding (42%) and catalytic activity (41%) were most frequently represented...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215863/zero-inflated-hierarchical-models-for-faecal-egg-counts-to-assess-anthelmintic-efficacy
#14
Craig Wang, Paul R Torgerson, Johan Höglund, Reinhard Furrer
The prevalence of anthelmintic resistance has increased in recent years, as a result of the extensive use of anthelmintic drugs to reduce the infection of parasitic worms in livestock. In order to detect the resistance, the number of parasite eggs in animal faeces is counted. Typically a subsample of the diluted faeces is examined, and the mean egg counts from both untreated and treated animals are compared. However, the conventional method ignores the variabilities introduced by the counting process and by different infection levels across animals...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215862/natural-infection-of-the-feline-lungworm-aelurostrongylus-abstrusus-in-the-invasive-snail-achatina-fulica-from-argentina
#15
Romina Valente, Julia Ines Diaz, Oscar Daniel Salomón, Graciela Teresa Navone
The giant African snail Achatina fulica is an invasive mollusk native to Africa, the first record in Argentina was in Puerto Iguazú, in northeastern Argentina in 2010. Recently it was reported in Corrientes Province. This snail can act as an intermediate host of Metastrongyloidea nematodes of importance in public health as: Angiostrongylus cantonensis, Angiostrongylus costaricensis and Angiostrongylus vasorum. Taking into account the presence of A. fulica in Argentina, the objectives of this study is to assess the presence of Metastrongyloidea nematodes in this mollusk species in Puerto Iguazú, Misiones, close to the international border with Brazil and Paraguay...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215861/effects-of-anthelmintic-treatment-and-feed-supplementation-on-parasite-infections-and-morbidity-parameters-in-cambodian-cattle
#16
Veronique Dermauw, Sothy Meas, Bunthon Chea, Thierry Onkelinx, San Sorn, Davun Holl, Johannes Charlier, Jozef Vercruysse, Pierre Dorny
Helminth infections are the cause of morbidity in Cambodian cattle but other factors such as nutritional deficiencies and concurrent diseases may enhance the effects of parasites. The present study aimed to investigate the impact of anthelmintic treatment, feed supplementation, or both on gastrointestinal strongyle (GIS) and trematode infections as well as on morbidity parameters in Cambodian village cattle. At the beginning of the dry season, cattle populations in six villages were randomly assigned to a group: (A) receiving anthelmintic treatment (ivermectin+clorsulon) at week 0; (P) feed pellet supplementation during week 0-13 or both (AP)...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215860/the-use-of-infrared-images-to-detect-ticks-in-cattle-and-proposal-of-an-algorithm-for-quantifying-the-infestation
#17
Jayme Garcia Arnal Barbedo, Claudia Cristina Gulias Gomes, Fernando Flores Cardoso, Robert Domingues, Jeferson Vidart Ramos, Concepta Margaret McManus
This paper presents a study on the use of low resolution infrared images to detect ticks in cattle. Emphasis is given to the main factors that influence the quality of the captured images, as well as to the actions that can increase the amount of information conveyed by these images. In addition, a new automatic method for analyzing the images and counting the ticks is introduced. The proposed algorithm relies only on color transformations and simple mathematical morphology operations, thus being easy to implement and computationally light...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215859/evaluation-of-molecular-methods-for-the-field-study-of-the-natural-history-of-dicrocoelium-dendriticum
#18
Gillian Mitchell, Grace Cuthill, Alex Haine, Ruth Zadoks, Umer Chaudhry, Philip Skuce, Neil Sargison
There is a need for improved methods for the study of the impacts of climatic and livestock management change on the epidemiology of production-limiting helminth parasitic diseases. In this study we report the application of molecular methods to describe the natural history of the small lancet fluke, Dicrocoelium dendriticum on Machair pastures on the Inner Hebridean Isle of Coll. Our results build upon those of the only previous historic field study of D. dendriticum in the British Isles that had been undertaken on the same study site...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215858/molecular-survey-of-dirofilaria-immitis-and-dirofilaria-repens-by-new-real-time-taqman-%C3%A2-pcr-assay-in-dogs-and-mosquitoes-diptera-culicidae-in-corsica-france
#19
Djamel Tahir, Fadi Bittar, Hélène Barré-Cardi, Doudou Sow, Mustapha Dahmani, Oleg Mediannikov, Didier Raoult, Bernard Davoust, Philippe Parola
Dirofilaria immitis and D. repens are filarioid nematodes of animals and humans, transmitted by the bite of infected mosquitoes. Domestic and wild canids are a major natural host and reservoir for these parasites. In this study, we designed a duplex real-time PCR protocol targeting the mitochondrial cytochrome c oxidase subunit I (COI) gene, detecting both D. immitis and D. repens using two primer pairs and two Dirofilaria-specific hydrolysable probes. The sensitivity and specificity of the primers and probes were tested in both experimental and naturally infected samples...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28115182/antiparasitic-activity-histopathology-and-physiology-of-colossoma-macropomum-tambaqui-exposed-to-the-essential-oil-of-lippia-sidoides-verbenaceae
#20
Bruna Viana Soares, Lígia Rigôr Neves, Drielly Oliveira Ferreira, Marcos Sidney Brito Oliveira, Francisco Célio Maia Chaves, Edsandra Campos Chagas, Raissa Alves Gonçalves, Marcos Tavares-Dias
In vivo and in vitro antiparasitic activity of the essential oil of Lippia sidoides and blood and histological alterations were assessed in Colossoma macropomum (tambaqui). Essential oil concentrations of 10, 20, 40, 80, 160 and 320mg/L were assayed in vitro against monogenoideans Anacanthorus spathulatus, Notozothecium janauachensis and Mymarothecium boegeri from fish gills. Lippia sidoides essential oil concentrations of 320 and 160mg/L were 100% effective against monogenoideans in 10min and 1h of exposure, respectively...
January 30, 2017: Veterinary Parasitology
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