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Journal of Parasitology

Nagah Arafat, Ibrahim Abbas
A systematic study was taken to identify the species, characterize the pathogenicity, and assess the immunization of Eimeria bateri in Japanese quails (Coturnix coturnix japonica). In total, 107 Japanese quail farms were examined. The samples were processed and oocysts shape indices of sporulated oocysts were determined. Out of 107 examined farms 34 (31.78%) farms were positive. Four Eimeria spp. were morphologically identified. For characterization of the pathogenicity, Japanese quails were orally inoculated with various doses of sporulated oocysts of Eimeria bateri...
November 16, 2017: Journal of Parasitology
Helrik Costa Cordeiro, Francisco Tiago de Vasconcelos Melo, Elane Guerreiro Giese, Jeannie Nascimento Dos Santos
Specimens of the genus Gongylonema were collected from the gastric mucosa of rodents of the Rattus rattus Linnaeus, 1758 and Rattus norvegicus Berkenhout, 1769 collected in urban areas in Belém, Pará, in the eastern Brazilian Amazon. The helminths were processed for analysis using light microscopy and scanning electron microscopy (SEM) techniques, and presented taxonomic characteristics of the species Gongylonema neoplasticum. The SEM analyses revealed the presence of 2 developed buccal plates (1 dorsal, 1 ventral), also called interlabia, with a proeminent and bifurcated ventral plaque...
November 14, 2017: Journal of Parasitology
Tara Elizabeth Stewart, Mark Torchin, Carla Cáceres
The top-down effects of consumers, like predators, are known to affect abundances, size structure, and species composition in aquatic ecosystems. Parasites are also important in shaping the ecology of free-living species, however, their effects are often overlooked because parasites can be difficult to detect. Parasites can be particularly challenging to observe in zooplankton hosts because of their small size and ephemeral infection periods. To overcome these challenges, we used a quarantine approach combined with high magnification microscopy to increase detection of parasites of the tropical Cladoceran, Ceriodaphnia cornuta, in Lake Gatun, Panamá...
November 14, 2017: Journal of Parasitology
Jemima Amery-Gale, Joanne Maree Devlin, Liliana Tatarczuch, David Augustine Taggart, David J Schultz, Jenny A Charles, Ian Beveridge
A novel coccidian species was discovered in the prostate of an Antechinus flavipes (yellow-footed antechinus) in South Australia, during the period of post-mating male antechinus immunosuppression and mortality. This novel coccidian is unusual because it develops extra-intestinally and sporulates endogenously within the prostate gland of its mammalian host. Histological examination of prostatic tissue revealed dense aggregations of spherical and thin-walled tetrasporocystic, dizoic sporulated coccidian oocysts within tubular lumina, with unsporulated oocysts and gamogonic stages within the cytoplasm of glandular epithelial cells...
November 10, 2017: Journal of Parasitology
Joice Faria, Caroline Couto, Sheron Wierzynski, Nathieli Bottari, Matheus Baldissera, Wanderson Pereira, Aleksandro Da Silva
Toxoplasma gondii is a cosmopolitan protozoan that causes disease in several species, including humans. In cats, these infections are usually asymptomatic, but in other species it can lead to high levels of inflammatory and cell damage markers, which may cause cellular damage. Therefore, the aim of this study was to measure levels of tumor necrosis factor (TNF-α), reactive oxygen species (ROS), and nitric oxide (nitrite/nitrate - NOx) in the serum of cats seropositive for T. gondii. Initially, we investigated the presence of antibodies against T...
November 10, 2017: Journal of Parasitology
Wei Tao, Yijing Li, Hang Yang, Mingxin Song, Yixin Lu, Wei Li
Bovine cryptosporidiosis constitutes a threat to the livestock industry and public health worldwide. In the present study we investigated dairy cattle of all ages in northeast China for the prevalence and genetic traits of Cryptosporidium. Nested PCR of the small subunit rRNA gene was used to identify Cryptosporidium species or genotype. The parasite was detected in 130 of 537 (24.2%) animals sampled from the cities of Harbin (35.2%, 69/196) and Qiqihar (32.1%, 61/190). Cryptosporidium parvum (87/130) was identified as the dominant species by sequence analysis, followed by Cryptosporidium bovis (28/130), Cryptosporidium ryanae (5/130), Cryptosporidium andersoni (2/130), Cryptosporidium suis-like genotype (2/130), and mixed C...
November 10, 2017: Journal of Parasitology
Alihan Katlav, Hamidreza Hajiqanbar
Male and larval female of the parasitic mite Eutarsopolipus abdominis Regenfuss, 1968 (Acari: Prostigmata: Podapolipidae) belonging to the myzus species group, are described and illustrated for the first time based on the materials recovered from under elytra of Agonum sp. (Coleoptera: Carabidae) from Mazandaran Province, Northern Iran. A redescription of the adult female is also provided. It is the first record of this species from Asia and fourth representative of parasitic mites of myzus group found from Iran...
November 10, 2017: Journal of Parasitology
Jessica E Light, Sheree Harper, Kevin Johnson, James Demastes, Theresa Spradling
Next-generation sequencing methodologies open the door for evolutionary studies of wildlife parasites. We used 2 next-generation sequencing approaches to discover microsatellite loci in the pocket gopher chewing louse Geomydoecus aurei for use in population genetic studies. In one approach, we sequenced a library enriched for microsatellite loci; in the other approach, we mined microsatellites from genomic sequences. Following microsatellite discovery, promising loci were tested for amplification and polymorphism in 390 louse individuals from 13 pocket gopher hosts...
November 8, 2017: Journal of Parasitology
Georgios Meletis, Efstathios Oustas, Christina Kemanetzi, Christina Botziori
Not applicable.
November 8, 2017: Journal of Parasitology
Muhammad Saqib Ali, Khalid Saeed, Muhmmad Imran Rashid, Muhammad Ijaz, Haroon Akbar, Muhammad Rashid, Kamran Ashraf
Gastrointestinal nematodes are responsible for economic losses in bovines and are characterized by reduced milk production, decreased working efficiency and even death. In our study, the effect of different anthelmintic treatments on nematode control in different parity cattle (Friesian Crossbreds) at calving and their effect on milk yield was evaluated. Economic of anthelmintic and farm benefit in term of increase milk production after deworming was also calculated. We screened cattle of first and second parity for nematodes...
November 8, 2017: Journal of Parasitology
Will K Reeves
A molecular surveillance of haemosporidian parasites from 19,521 Culex pipiens (L.) (Diptera: Culicidae) from Kuwait detected 2 pools with a unique Haemoproteus (Haemoproteus) sp. (Haemospororida: Haemoproteidae) most likely parasitizing columbiform birds and probably represented contaminated blood meals or aborted infections in mosquitoes. Haemoproteus spp. have been previously reported in Kuwait based on microscopic examination of avian blood smears. I report on molecular detection and subgenus level identification of a novel Haemoproteus (Haemoproteus) sp...
November 8, 2017: Journal of Parasitology
Jang Ock Cha, Jing Zhao, Myeon Sik Yang, Won Il Kim, Ho Seong Cho, Chae Woong Lim, Bumseok Kim
Various species of Eimeria have different prepatent times and predilection sites, but their life cycles in infected poultry are similar. Practically speaking, chickens can be continuously exposed to various Eimeria species through environmental contamination. Furthermore, storage condition of the oocysts influences subsequent challenge infectivity, since coccidian oocysts contain a polysaccharide energy source known as amylopectin that is required for sporulation of oocysts and survival of the sporozoites. Here, analysis of the oocyst shedding patterns of 3 Eimeria species (Eimeria acervulina, Eimeria maxima and Eimeria tenella) and the effects of different oocyst storage time (64, 143, 225 and 332-day-old oocysts) on subsequent propagation patterns were evaluated...
November 8, 2017: Journal of Parasitology
Raquel Tostes, Roberto Júnio Pedroso Dias, Luísa de Oliveira, Marcus Vinicius Xavier Senra, Carlos Luiz Massard, Marta D'Agosto
Plasmodium spp. are haemosporidian protozoans that alternate their live cycles between bloodsucking Culicidae dipterans and vertebrate hosts (mammals, reptiles and birds). In birds, these parasites are the causative agents of the so called avian malaria, a disease associated with considerable declines and extinctions in the avifauna in different geographical regions. In this work, we applied a multidisciplinary approach, light microscopy and cytochrome oxidase b (cyt b) gene sequence analysis for characterization of Plasmodium found in association with wild birds of the genus Turdus, collected in Atlantic forest fragments of southeastern Brazil...
November 8, 2017: Journal of Parasitology
Mikulas Oros, Dalibor Uhrovic, Tomáš Scholz
A taxonomic study of monozoic cestodes of the genus Glaridacris Cooper, 1920 (Cestoda: Caryophyllidea), parasites of catostomid fishes in North America, confirmed artificial character of the genus which is split to 2 different, morphologically distinct and not closely related genera. Glaridacris is newly circumscribed to include only 3 species, Glaridacris. catostomi Cooper, 1920 (type species), Glaridacris. terebrans (Linton, 1893) and Glaridacris. vogei Mackiewicz, 1976, which are characterized by an elongate body, a cuneiloculate or wedge-shaped scolex with six 6 shallow loculi, male and female gonopores at a distance from each other, follicular ovary and circum-medullary vitelline follicles (lateral and median)...
November 8, 2017: Journal of Parasitology
Omar M Amin, Richard A Heckmann, Atheer H Ali
The acanthocephalan Paratrajectura longcementglandatus n. gen., n. sp. (Transvenidae) is described from specimens of 2 perciform fish species, Nemipterus japonicus Bloch (Nemipteridae) and Otolithes ruber Bloch and Schneider collected in the marine territorial waters of Iraq and Iran in the Arabian Gulf. Metal analysis of hook tip, middle and base is also described using X-ray microanalysis EDAX. The new genus is distinguished from the closely related genus Trajectura Pichelin and Cribb, 2001 described from wrasses (Labridae) (Perciformes) in the Pacific off Australia and Japan by having a proboscis with apical epidermal cone, long rhadinorhynchid-like tubular cement glands, relatively short and lobulated lemnisci, all proboscis hooks with prominent roots, females with subterminal gonopore and a rounded projection on the antero-dorsal end of the trunk, and males with elongate pre-equatorial testes reaching proboscis receptacle...
November 8, 2017: Journal of Parasitology
Anna Paziewska-Harris, Gerard Schoone, Henk D F H Schallig
The long-term storage of Cryptosporidium life-cycle stages is a prerequisite for in vitro culture of the parasite. Cryptosporidium parvum oocysts, sporozoites and intracellular forms inside infected host cells were stored for 6 to 12 mo in liquid nitrogen utilizing different cryoprotectants (dimethyl sulfoxide [DMSO], glycerol and fetal calf serum [FCS]), then cultured in vitro. Performance in vitro was quantified by estimating the total Cryptosporidium copy number using qPCR in 3- and 7-day-old cultures. While only few parasites were recovered either from stored oocysts or from infected host cells, sporozoites stored in liquid nitrogen recovered from freezing successfully...
November 2, 2017: Journal of Parasitology
Vasyl V Tkach
No abstract text is available yet for this article.
October 2, 2017: Journal of Parasitology
Dan She, Xin Zhang, Ze Xun Mo, Gui Lan Yang, Jyh-Wei Shin, Xiao Guang Chen, Li Wang Cui, Hua Li
Angiostrongylus cantonensis infection can lead to severe neuropathological damages caused by their development in the central nervous system (CNS) after penetrating the blood-brain barrier (BBB). They commonly cause eosinophilic meningitis or meningoencephalitis (EM) in non-permissive hosts (e.g., mice). It has been shown that differences exist in the brains of permissive and non-permissive hosts during the larval development of A. cantonensis, however, the mechanism underlying the difference is not completely understood...
September 27, 2017: Journal of Parasitology
Bo-Bo Wang, Kui-Zheng Cai, Qiang Xu, Jun-Lin Liu, Yu-Jia Xue, Kang-Ying Wang, Rui Ren, Wen-Xiu Fang, Fan Wang, Xin Cao
It is necessary to screen more potential candidates from the local isolates of nematophagous fungi and to investigate interaction between the fungal strains and the nematodes for the biological control of parasitic nematodes in livestocks. In the present study, The present study was divided into two phases. In the first phase, it was to bewe assessed that the in vitro predatory activity and the viability of isolates of Arthrobotrys thaumasia (Monacrosporium thaumasium) after passing through the gastrointestinal tract of sheep...
September 27, 2017: Journal of Parasitology
Sherman S Hendrix
No abstract.
September 13, 2017: Journal of Parasitology
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