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Journal of Parasitology

Janine N Caira, Kirsten Jensen, Carolyn A Fyler
Collections from the dwarf sawfish, Pristis clavata, near Darwin, Australia in 1997 led to the discovery of the new onchoproteocephalidean genus Matticestus n. gen.-a taxon that has been referred to in molecular phylogenetic analyses in which it has been included as "New genus 8." Its type species, Matticestus anneae n. gen., n. sp., and a second species, Matticestus kathleenae n. sp. are described. Placement of this taxon in the Onchoproteocephalidea is supported morphologically in that both species bear a scolex with 4 bothridia each with a pair of bipronged hooks and spinitriches that extend throughout the length of the body...
January 15, 2018: Journal of Parasitology
Cameron P Goater, Jayden Dyck, Heather Proctor, Kevin Floate
Hippoboscid flies (Diptera: Hippoboscidae) include species that are ectoparasites of birds in the Northern Hemisphere, but little is known regarding their taxonomy, parasites, avian host associations, or geographical distribution in North America. In late August of 2013 and 2014, we collected hippoboscid flies from live birds trapped in mist nets as part of a banding study in Cypress Hills Interprovincial Park in southeastern Alberta, Canada. A total of 113 birds comprising 9 species was examined in 2013. Of these, 18 individuals were infested with 1-3 Ornithomya anchineuria Speiser (n = 22 flies; prevalence = 15...
January 11, 2018: Journal of Parasitology
Leonardo Barros Ribeiro, Antônio Ferreira, Diego Silva, Fabiano Vieira, Geraldo Moura
The lizard Nothobachia ablephara is endemic to dune areas and sandy soils adjacent to the São Francisco River in semiarid northeastern Brazil. Forty-nine lizard specimens were collected in 2 Caatinga areas in the municipality of Petrolina, in Pernambuco state. Three gastrointestinal helminth taxa were identified, the nematodes Parapharyngodon alvarengai and Physaloptera sp., and the cestode Oochoristica sp. Nothobachia ablephara showed low parasite richness, however higher levels of infection by P. alvarengai...
January 4, 2018: Journal of Parasitology
Thomas John Fayton, Chris T McAllister, Henry W Robison, Matthew B Connior
Plagioporus ictaluri n. sp. and Plagioporus carolini n. sp. are described from the intestines of the Ouachita Madtom, Noturus lachneri, and the Banded Sculpin, Cottus carolinae, respectively, from adjacent drainages in Arkansas. The new species are morphologically most similar to 1 another and in turn similar to Plagioporus sinitsini, Plagioporus chilitcorum, Plagioporus serratus, and Plagioporus hypentelii, but they can be distinguished from these congeners in possession of an excretory vesicle that extends anteriorly to the level of the anterior testis as opposed to 1 only reaching the posterior testis (P...
December 20, 2017: Journal of Parasitology
Di Barton, Lesley Smales, Jessica Morgan
Adult and cystacanth forms of the acanthocephalan Serrasentis sagittifer from Australian coastal waters are redescribed and verified as the same species using both molecular and morphological data. This study provides the baseline 18S rDNA, 28S rDNA and cox1 sequence data to now genetically barcode S. sagittifer. The validity of the currently recognised species of Serrasentis is discussed, with most previously described species determined as junior synonyms of either Serrasentis nadakali or S. sagittifer; a number of species are also determined as species inquirenda...
December 12, 2017: Journal of Parasitology
Marcelo Bahia Labruna, Francisco Costa, Marcio Port-Carvalho, Alice Oliveira, Silvio Souza, Marcio Castro
The liver fluke Fasciola hepatica (Trematoda: Fasciolidae) causes fascioliasis, which affects mostly domestic ruminants and humans worldwide. This parasite has an Old World origin and was introduced into the New World by European colonizers. Capybara (Hydrochoerus hydrochaeris) is the largest living rodent species, with adults weighing over 60 kg. We report a fascioliasis outbreak caused by F. hepatica, that reduced a capybara group from 21 to 2 animals within a 9-mo period. Animal infection and associated lesions were confirmed by post-mortem examinations, which revealed extensive liver damage associated with the presence of large number of adult and immature forms of F...
November 29, 2017: Journal of Parasitology
Vasyl V Tkach, John Mike Kinsella, Stephen E Greiman
Two new species of Staphylocystoides are described from masked shrews Sorex cinereus: Staphylocystis oligospinosus n. sp. was collected from the vicinity of Missoula, Montana, United States and Staphylocystoides parasphenomorphus n. sp. was collected from the vicinity of Whitehorse, Yukon Territory, Canada. Morphological differentiation from known species is provided. Both species are morphologically closest to Staphylocystoides sphenomorphus and to each other. Among other characters, Staphylocystoides oligospinosus n...
November 28, 2017: 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
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