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14:12 EST 13th December 2018 | BioPortfolio

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Showing PubMed Articles 1–25 of 193 from The Journal of parasitology

ACHATINA FULICA (MOLLUSCA: ACHATINIDAE) NATURALLY INFECTED WITH CAENORHABDITIS BRIGGSAE (Dougherty & Nigon, 1949) (NEMATODA: RHABDITIDAE)).

Exemplars of the African snail Achatina fulica, collected in Bucaramanga, Colombia were examined for parasites. In the digestive tract, numerous specimens of Caenorhabditis briggsae were collected and identified by molecular and morphological methods. A redescription of the species is done.

HISPIDORHYNCHUS STYRACURAE N. SP. (TRYPANORHYNCHA: EUTETRARHYNCHIDAE) FROM THE CHUPARE STINGRAY, STYRACURA SCHMARDAE (WERNER), FROM THE CARIBBEAN SEA, INCLUDING NEW RECORDS OF ONCOMEGAS WAGENERI (LINTON, 1890).

Species of the eutetrarhynchid genus Hispidorhynchus Schaeffner and Beveridge, 2012 possess an uncinate macrohook on the bothrial surface of the basal swelling of each tentacle. This unique feature of the oncotaxy is only shared with the closely-related genus Oncomegas Dollfus, 1929. A new species of Hispidorhynchus is described from specimens infecting Styracura schmardae (Werner, 1904) (Potamotrygonidae) from the western Caribbean Sea off the coast of Belize and Panama. Hispidorhynchus styracurae n. sp. d...

Further Characterization of Molecular Markers in Canine Dirofilaria immitis Infection.

Dirofilaria immitis is a common filarial parasite found in dogs and cats in the Americas, with the pathophysiological consequences of the infection differing somewhat between these two host species. Recent research efforts have been focused on determining if the microRNAs (miRNAs) released from adult Dirofilariae have a role as markers for distinguishing the intensity of adult worm infection, as well as determining the presence of new infections. This study expands previous work on two nematode miRNAs, miR-...

Intestinal parasites in Galapagos sea lions (Zalophus wollebaeki) Sivertsen, 1953 on San Cristóbal Island, Galápagos, Ecuador.

Knowledge regarding endoparasites of Galapagos sea lions, Zalophus wollebaeki Sivertsen, 1953, is limited to 1 report. Herein, we examined feces extracted from the lower gastro-intestinal tract of 15 Galapagos sea lions (GSL) plus 14 fecal mounds nearby GSL at 4 locations on San Cristobal Island, Galapagos beginning in May continuing through June 2016. Using standard fecal flotation and sedimentation techniques, lungworm larvae, suggestive of Parafilaroides and Otostrongylus sp., eggs of pseudophyllidea ces...

WIDESPREAD DISTRIBUTION OF CERATONOVA SHASTA (CNIDARIA:MYXOSPOREA) GENOTYPES INDICATES BOTH EVOLUTIONARY ADAPTATION TO ITS SALMONID FISH HOSTS.

The distribution of the freshwater, myxozoan parasite Ceratonova shasta, in the Pacific Northwest of North America is limited to overlap in the ranges of its 2 hosts: the polychaete Manyunkia sp., and Pacific salmonids. Studies in the Klamath River (Oregon/California) and Deschutes River (Oregon), showed that the parasite population is comprised of multiple, sympatric genotypes, some of which correlate with particular salmonid host species and with differences in clinical disease in those hosts. The 3 prima...

Preliminary comparison of an in-house real-time PCR with the automated BD Max Enteric Parasite Panel for the detection of Giardia intestinalis.

Giardia intestinalis is a parasite that commonly causes diarrheal disease throughout the world. An accurate and rapid diagnosis is essential to reduce the infection. Classically, diagnosis of giardiasis is performed by microscopic examination of stool samples, but in the recent years many DNA-based methods have been developed. In this preliminary observational study we compared the results of the commercial BD Max Enteric Parasite Panel (EPP) with an in-house real-time PCR for Giardia intestinalis. The stud...

PRESENTATION OF THE ASHTON CUCKLER NEW INVESTIGATOR AWARD TO DR. KYLE GUSTAFSON.

I am submitting my introduction of Dr. Kyle Gustafson for the American Society of Parasitologists Ashton Cuckler New Investigator Award I presented at the ASP annual meeting in Cancun Mexico a few months ago.

DISTRIBUTION, PREVALENCE, AND MAXIMUM INTENSITY OF THE ECTOPARASITIC COPEPOD SALMINCOLA CF. EDWARDSII IN BROOK TROUT IN WISCONSIN STREAMS.

Since the late 19th century the ectoparasitic copepod Salmincola cf. edwardsii have been observed infecting brook trout Salvelinus fontinalis in Wisconsin streams. A perceived increase in the incidence of S. cf. edwardsii infection across the state and the observation of an S. edwardsii epizootic leading to declines in brook trout recruitment in Ash Creek, Wisconsin, have raised concerns about the extent to which S. edwardsii threaten other populations of brook trout in Wisconsin streams. In 2013-2017, broo...

Molecularly Confirmed Acute, Fatal Sarcocystis falcatula Infection in the Rainbow Lorikeets (Trichoglossus moluccanus) at the Philadelphia Zoo.

The protozoan parasite Sarcocystis falcatula is an important cause of clinical disease in several avian intermediate hosts. The host range of S. falcatula is wide and numerous outbreaks of acute sarcocystosis have been reported in passerine and psittacine birds in captivity in the Americas. Previous diagnosis was performed by serologic methods, light and/or electron microscopic examinations with limited molecular confirmation. Here, we report histological and molecular diagnosis of acute, fatal S. falcatula...

Prolonged Storage Increases Virulence of Steinernema Entomopathogenic Nematodes towards Drosophila larvae.

Entomopathogenic nematodes are excellent organisms for dissecting the molecular basis of parasitism and probing the insect innate immune system. The nematode parasite Steinernema carpocapsae is a potent pathogen of insects that has emerged recently as model for parasitic infection and anti-nematode immune signaling and response. The nematodes are mutualistically associated with the bacteria Xenorhabdus nematophila, which are also pathogenic to insects. Separation of nematodes from their associated bacteria ...

DEMONSTRATION OF THE ANTHELMINTIC POTENCY OF MARIMASTAT IN THE HELIGMOSOMOIDES POLYGYRUS RODENT MODEL.

In the course of a structure based drug discovery program the known anticancer candidate marimastat was uncovered as a potent inhibitor of an enzyme in nematode cuticle biogenesis. It was shown to kill Caenorhabditis elegans, and the sheep parasites Haemonchus contortus and Teladorsagia circumcinta via an entirely novel nematode-specific pathway, specifically by inhibiting cuticle-remodelling enzymes that the parasites require for the developmentally essential moulting process. This discovery prompted an in...

INTRODUCTION OF JAMES "SPARKY" LOK, RECIPIENT OF THE BUEDING AND VON BRAND LECTURESHIP AWARD.

PARASITOLOGY: DIVERSITY AND INCLUSION FOR THE FUTURE.

DETECTION AND EVALUATION OF ANTIBODY RESPONSE TO A BAYLISASCARIS-SPECIFIC ANTIGEN IN RODENT HOSTS USING WESTERN BLOTTING AND ELISA.

Diagnosis of parasitic diseases that involve tissue stage larvae is challenging, and serology remains the most effective antemortem test for detecting these infections. Baylisascaris procyonis, the raccoon roundworm, is a zoonotic ascarid. Raccoons are the usual definitive host, and humans may be infected as accidental hosts. More than 150 species of birds and mammals may act as paratenic hosts and rodents play an important role in the transmission and maintenance of this parasite in nature. Migratory larva...

LIFE CYCLE OF THE PARASITE PROFILICOLLIS CHASMAGNATHI (ACANTHOCEPHALA) ON THE PATAGONIAN COAST OF ARGENTINA BASED ON MORPHOLOGICAL AND MOLECULAR DATA.

This study verifies the identity of adult specimens of the parasite Profilicollis chasmagnathi (Achantocephala, Polymorphidae) recovered from kelp gulls Larus dominicanus (Aves, Laridae), and cystacanths found in crabs Cyrtograpsus altimanus (Crustacea, Decapoda) from the southwestern Atlantic coast. The life cycle of this parasite is elucidated in the intertidal zone of Patagonia, Argentina, based on morphological and molecular data. Preferences by size and sex of the intermediate host and seasonal variati...

INTRODUCTION OF THE 2018 RECIPIENT OF THE AMERICAN SOCIETY OF PARASITOLOGISTS' CLARK P. READ MENTOR AWARD, DR. JANINE N. CAIRA.

There is no abstract.

EVALUATION OF THE EFFICACY OF TEA TREE OIL ON THE DENSITY OF DEMODEX MITES (ACARI: DEMODICIDAE) AND OCULAR SYMPTOMS IN PATIENTS WITH DEMODECTIC BLEPHARITIS.

The objective of this study was to examine the efficacy of 7.5% tea tree oil (TTO) eyelash shampoo on the density of Demodex (Acari: Demodicidae) and ocular symptoms in patients with demodectic blepharitis. A total of 135 patients diagnosed with demodectic blepharitis, following clinical inspection and parasitological examinations, were included in the study. Patients were treated with eyelash shampoo, with or without TTO. Full Demodex reduction was attained in 36% of the patients who used eyelash shampoo w...

Introduction of Pieter T. J. Johnson, recipient of the Henry Baldwin Ward Medal for 2018.

Not applicable.

First Report Of Gastrointestinal Parasites From Ansell's Mole-Rat (Fukomys anselli) In Zambia.

The endoparasite fauna of Ansell's mole-rat, Fukomys anselli (Burda, Zima, Scharff, Macholán and Kawalika) (Rodentia, Bathyergidae) was studied for the first time near Lusaka, Zambia. We recovered 7 endoparasite taxa including 5 nematodes (Hexametra sp., Protospirura numidica Seurat, 1914, Protospirura muricola Gedoelst, 1916, Protospirura sp. and Mammalakis zambiensis Junker, Lutermann and Mutafchiev, 2017) and 2 cestodes (Inermicapsifer sp. and Rodentolepis cf. microstoma (Dujardin, 1845)) from 272 indiv...

Presentation of the 2018 ASP Distinguished Service Award to Dennis J. Minchella.

Helminth Infracommunities of the Montezuma's Frog Lithobates montezumae (Anura: Ranidae) in the Nearctic-Neotropical transition zone of Mexico.

Thirty specimens of the Montezuma's frog Lithobates montezumae were collected in San Pedro Tlaltizapán, in the Nearctic-Neotropical transition zone of Mexico, in April, 2013, in order to establish the helminth infracommunity structure harbored by this amphibian host. A total of 5, 493 individual helminths were obtained representing 6 species (3 trematodes and 3 nematodes). The depauperate structure of the helminth infracommunities established for the studied frogs herein (richness= 2.4; mean abundance= 183...

Parasitological and molecular detection of canine trypanosomiasis from Riyadh province, Saudi Arabia.

Trypanosoma evansi is the most widespread of the pathogenic salivarian trypanosomes; it causes a serious disease called surra that affects domestic animals, such as camels, horses and dogs, and often leads to reduced productivity and economic losses. Therefore, the objectives of the present study were to determine the prevalence rates of trypanosomiasis using 3 parasitological tests (wet blood film [WBF], Giemsa's staining, and micro-hematocrit centrifugation technique [MHCT]) and polymerase chain reaction ...

Phylogenetic position of Pseudosellacotyla lutzi (Freitas, 1941) (Digenea: Cryptogonimidae), a parasite of Hoplias malabaricus (Bloch) in South America, through 28S rDNA sequences, and new observations of the ultrastructure of their tegument.

The freshwater fish digenean Pseudosellacotyla lutzi (Freitas, 1941) Yamaguti, 1954 has had an unsettled taxonomic history, and has at various times been classified as a member of Nanophyetidae, Heterophyidae, Microphallidae, Faustulidae, and Cryptogonimidae. Nine individual specimens of the trahira, Hoplias malabaricus (Bloch, 1794), were sampled in the Paraná River basin, Paraná State, Brazil; twenty-two specimens of P. lutzi were collected. One specimen of P. lutzi was used to obtain a sequence of the ...

Role of Rats (Rattus norvegicus) in the Epidemiology of Toxoplasma gondii Infection in Grenada, West Indies.

Rodents are known to be reservoir hosts of Toxoplasma gondii infection for other animals, including cats and pigs. From February to July, 2017, 167 rats (Rattus norvegicus) were trapped in Grenada and serum, heart, skeletal muscle and brain were examined for T. gondii infection by serological examination (Modified agglutination test, MAT, 1:25) for T. gondii antibodies and for viable parasites by bioassay in mice. Samples of heart, skeletal muscle and brain of all rats were bioassayed in Swiss Webster (SW) ...

PREVALENCE, DISTRIBUTION, AND RISK FACTORS ASSOCIATED WITH MACRACANTHORHYNCHUS INGENS INFECTIONS IN RACCOONS FROM ONTARIO, CANADA.

Macracanthorhynchus ingens is an acanthocephalan parasite commonly found in raccoons (Procyon lotor) in the United States. Little is known, however, about the prevalence and distribution of M. ingens in raccoons in Canada. Our objective was to investigate the prevalence, distribution and risk factors associated with M. ingens infection in raccoons in southern Ontario, Canada. Raccoon carcasses submitted to the Ontario/Nunavut region of the Canadian Wildlife Health Cooperative (CWHC) for post-mortem from Jun...


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