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Journal of Parasitology

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https://www.readbyqxmd.com/read/28783468/evaluation-of-experimental-infection-with-l-l-amazonensis-in-x-linked-immunodeficient-mice
#1
Patricia Xander, Wagner Francisco Kennerly Marcondes Gonzaga, Mariana Marques Geraldo, Bruno Camolese Vivanco, Ana Flavia Popi, Mario Mariano, Wagner Luiz Batista
B-1 cells are a subtype of B cells with peculiar characteristics. These cells are distinct from B-2 lymphocytes in their morphology, ontogeny, tissue distribution and phenotypic functional features. B-1 cells can participate in the immune response in several ways, for example, by being recruited to inflammatory foci, producing large amounts of IL-10 cytokine, and differentiating into IgM-secreting cells or phagocytes. Nevertheless, the role of B-1 cells in the pathogenesis of experimental leishmaniasis has not been fully elucidated...
August 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28783438/sarcocystis-strixi-n-sp-from-a-barred-owl-strix-varia-definitive-host-and-interferon-gamma-gene-knockout-mice-as-experimental-intermediate-host
#2
Shiv Verma, Alexa Rosypal, Jospeph Mowery, David Scott, Camila Cezar, Benjamin M Rosenthal, J P Dubey, David Lindsay
Here we report a new species of Sarcocystis with Barred owls as the natural definitive host and interferon gamma gene knockout (KO) mice as an experimental intermediate host. A Barred owl submitted to the Carolina Raptor Center, Huntersville, North Carolina, was euthanized because of paralysis. Fully sporulated 12.5 x 9.9 m sporocysts were found in intestinal scrapings from the owl. Sporocysts from the Barred owl were orally fed to 4 laboratories reared outbred Swiss Webster (SW) (Mus musculus) and 8 KO mice...
August 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28783428/apex-predators-rockshelters-and-zoonoses-in-the-patagonian-holocene
#3
Martin Fugassa, Romina Petrigh
Carnivorous mammals are a trophic guild with an important role in the dissemination of parasite infective stages (larvae, eggs, cysts, and oocysts). In the present study, new samples of coprolites attributed to carnivorous mammals, obtained from two archaeological caves, were analyzed for the presence of parasites, with the aim to increase the knowledge about parasites in rockshelters that could have spread to humans and other mammals. To this purpose, fragments of 3 coprolites from Cerro Casa de Piedra, cave 5 (CCP5) and cave 7 (CCP7) were examined...
August 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28783421/a-new-rictulariid-nematoda-spirurida-in-xenarthrans-from-argentina-and-new-morphological-data-of-pterygodermatites-paucipectines-chaetophracti
#4
María Cecilia Ezquiaga, Tatiana Agustina Rios, Agustín Manuel Abba, Graciela Teresa Navone
Pterygodermatites is a cosmopolitan genus of nematodes from mammals and it is frequently encountered in the parasite fauna of armadillos (Mammalia, Xenarthra, Cingulata). In this work, a new species, Pterygodermatites (Paucipectines) argentinensis, is described and new morphometric data, new host records and the geographical distribution of Pterygodermatites (Paucipectines) chaetophracti are provided. We examined 109 hosts belonging to Chaetophractus vellerosus, Chaetophractus villosus, Cabassous chacoensis, Dasypus hybridus, Tolypeutes matacus, and Zaedyus pichiy, from several regions of Argentina...
August 7, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28766991/mosquito-vectors-of-avian-malaria-in-mississippi-a-first-look
#5
Diana Cumings Outlaw, David Larson, Jerome Goddard
The vectors of avian malaria (Haemosporida) are an understudied component of wildlife disease ecology. Most studies of avian malaria have focused on the intermediate bird hosts. This bias leaves a significant gap in our knowledge and understanding of the insect hosts. This study investigates the diversity of malaria parasites carried by mosquitoes (Diptera, Culicidae) in the state of Mississippi. Using molecular techniques, haemosporidian infection rates were determined and parasites were identified. A total of 27,157 female mosquitoes representing 15 species were captured...
August 2, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28737483/tissue-lesions-due-to-spirorchiid-eggs-in-a-loggerhead-turtle-caretta-caretta-linnaeus-1758-from-brazil-the-first-report-outside-of-the-usa
#6
Rachel Bittencourt Ribeiro, Hassan Jerdy, Raphael Mansur Medina, Mariah Bianchi, Max Werneck, Eulógio Carvalho
Spirorchiids (family Spirorchiidae Stunkard 1921) are a group of flukes that inhabit the circulatory system of turtles. Infection by members of the family Spirorchiidae involves egg deposition in the host blood stream, accumulation in tissues, which cause inflammatory reactions and embolisms, leading or contributing to the death of the host. Reports of Spirorchiids eggs lesions on loggerhead turtle (Caretta caretta Linnaeus, 1758) were observed only in the USA hosts. In the present report a female loggerhead sea turtle was found dead on the beach in north State of Rio de Janeiro, Brazil...
July 24, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28737475/ascaris-ancient-dna-sequences-of-cytochrome-b-cytochrome-c-oxidase-subunit-1-nadh-dehydrogenase-subunit-1-and-internal-transcribed-spacer-1-genes-from-joseon-mummy-feces-of-korea
#7
Jong Ha Hong, Chang Seok Oh, Min Seo, Jong Yil Chai, Dong Hoon Shin
We analyzed Ascaris ancient DNA (aDNA) of cytochrome b (cyt b), cytochrome c oxidase subunit 1 (COX1), NADH dehydrogenase subunit 1 (NAD1) and internal transcribed spacer 1 (ITS1) genes extracted from the feces or precipitates of 15th to 18th century Korean mummies. After multiple Ascaris genes in ancient samples were successfully amplified by PCR, consensus sequences could be determined by the alignment of the sequences of cloned PCR products. The obtained sequences of each gene were highly similar to those of Ascaris spp...
July 24, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28732456/introduced-rats-and-an-endemic-roundworm-does-rattus-rattus-contribute-to-baylisascaris-procyonis-transmission-in-california
#8
Sara B Weinstein
The introduced black rat, Rattus rattus, occurs throughout the native range of the raccoon roundworm, Baylisascaris procyonis, and might incorporate into its life cycle if rats consume parasite eggs, acquire viable infections, and are eaten by raccoons. Although rats forage at raccoon latrines, their role in B. procyonis transmission remains unknown. Here I tested the potential for rats to amplify B. procyonis transmission in California by surveying wild rodents for B. procyonis and conducting scavenger trials using motion activated cameras...
July 21, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28732178/reproductive-plasticity-in-the-nematode-gyrinicola-batrachiensis-does-an-intermediate-reproductive-strategy-exist-in-sexually-reproducing-didelphic-pinworms
#9
Jasmine N Childress, Sean C Rogers, Matthew G Bolek, Gabriel J Langford
Phenotypic plasticity is a process in which multiple phenotypes arise from one genotype due to environmental selection pressures. Gyrinicola batrachiensis has a heterogeneous reproductive strategy such that females reproduce either via parthogenesis with thick-shelled eggs in a single uterus or sexual reproduction with thick and thin-shelled eggs in separate uterine horns. No evidence exists that strains of G. batrachiensis are able to switch between parthenogenetic and sexual reproduction. Thin-shelled eggs are autoinfective while thick-shelled eggs act as transmission agents once shed into the aquatic environment...
July 21, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28731834/the-essential-oil-of-hyptis-mutabilis-in-ichthyophthirius-multifiliis-infection-and-its-effect-on-hematological-biochemical-and-immunological-parameters-in-silver-catfish-rhamdia-quelen
#10
Jessyka Arruda da Cunha, Fernando Jonas Sutili, Anita Motta Oliveira, Leticia Gressler, Cecilia de Ávila Scheeren, Lenise Lima Silva, Rodrigo Vaucher, Bernardo Baldisserotto, Berta Heinzmann
This study evaluated the activity of leaf essential oil (EO) from Hyptis mutabilis as well as its major constituent, (-)-globulol, in infections by the parasite Ichthyophthirius multifiliis (ich). Effects on hematological, biochemical and immunological parameters of silver catfish, Rhamdia quelen, exposed to same samples also were evaluated. In the first experiment, naturally infected fish were treated with EO (0, 10 and 20 mgL-1) and ethanol, using several methods of exposure. Fish mortality and the number of trophonts per fish were assessed after 48 and 96 hr...
July 21, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28727503/first-freshwater-bothriocephalidean-cestoda-from-tropical-south-america-closely-related-to-african-taxa
#11
Tomáš Scholz, Ricardo Massato Takemoto, Roman Kuchta
Regobothrium microhamulinum n. gen. and n. sp. (Bothriocephalidea: Bothriocephalidae) is proposed to accommodate a new cestode from flatfish Catathyridium jenynsii (Chabanaud, 1922) (Pleuronectiformes: Acharidae; type host) and another 3 freshwater fishes of the orders Characiformes, Cyprinodontiformes and Siluriformes in the Neotropical Region. The new genus is placed in the Bothriocephalidae because it possesses medioventral uterine and mediodorsal genital pores, and a follicular vitellarium. Regobothrium n...
July 20, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28708450/a-comparison-of-kenyan-biomphalaria-pfeifferi-and-b-sudanica-as-vectors-for-schistosoma-mansoni-including-a-discussion-of-the-need-to-better-understand-the-effects-of-snail-breeding-systems-on-transmission
#12
Martin Mutuku, Lijun Lu, Fredrick Otiato, Ibrahim Ndungu Mwangi, Joseph Mutonga Kinuthia, Geoffrey Murai Maina, Martina Rose Laidemitt, Eric Agola Lelo, Horace Ochanda, Eric Samuel Loker, Gerald Mwandori Mkoji
In Kenya, schistosomes infect an estimated 6 million people with >30 million people at risk of infection. We compared compatibility with, and ability to support and perpetuate, Schistosoma mansoni of Biomphalaria pfeifferi and Biomphalaria sudanica, 2 prominent freshwater snail species involved in schistosomiasis transmission in Kenya. Field-derived B. pfeifferi (from a stream in Mwea, central Kenya) and B. sudanica (from Nawa, Lake Victoria, in western Kenya) were exposed to S. mansoni miracidia isolated from fecal samples of naturally infected humans from Mwea or Nawa...
July 14, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28665258/morphology-molecular-characteristics-and-demonstration-of-a-definitive-host-for-sarcocystis-rommeli-from-cattle-bos-taurus-in-china
#13
Jun-Jie Hu, S Huang, T Wen, G W Esch, H L Li
Sarcocysts of Sarcocystis rommeli were found for the first time in 6 of 34 (17.6%) cattle (Bos taurus) in China. With light microscopy, sarcocysts of S. rommeli were up to 1,130 μm long, with a striated, 4-8 μm thick cyst wall. Using transmission electron microscopy, the villar protrusions (vp) were 4.7-5.2 × 0.2-0.3 μm, and 0.3-0.5 μm apart from each other. The vp contained microtubules extending from the top of the vp to the middle of the ground substance layer (gsl). A BLAST search of the near full-length 18S rRNA and partial mitochondrial cox1 of S...
June 30, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28665257/morphological-and-molecular-assessment-of-pentastomes-from-gulls-in-portugal
#14
Ivan Literak, María Casero, Božena Koubková, Miroslav Těšínský, Petr Heneberg
During 2016, 153 gulls, including 64 Larus fuscus and 89 Larus michahellis, were found crippled in south Portugal, died in Wildlife Rehabilitation and Investigation Center-RIAS, and were necropsied. Reighardia sternae infected 2 (3%, n = 64) L. fuscus and 4 (4%, n = 89) L. michahellis. Molecular analysis confirmed the morphological identification based on total body length, maximum body width, length of anterior and posterior hooks, total length of oral aparatus, and other features of oral aparatus of R. sternae...
June 30, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28650216/brachylaimiasis-brachylaima-spp-digenea-brachylaimidae-metacercariae-parasitizing-the-edible-snail-cornu-aspersum-helicidae-in-spanish-public-marketplaces-and-health-associated-risk-factors
#15
Mercedes Gracenea, Laia Gállego
The edible land snail Cornu aspersum (Pulmonata: Stylommatophora) acts as a second intermediate host in the terrestrial life-cycle of the trematodes Brachylaima spp., harboring unencysted metacercariae in its kidney. The ingestion of undercooked infected snails by humans may allow metacercariae to potentially develop to adult stage in the intestine causing brachylaimiasis, as already seen in the case of a given Brachylaima species in Australia. Prevalence and dynamics of C. aspersum parasitization by Brachylaima spp...
June 26, 2017: Journal of Parasitology
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
#16
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
#17
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
#18
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
#19
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
#20
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
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