33,376 results match your criteria Trematode Infection


A case report on the gallbladder fluke, (Trematoda: Dicrocoeliidae), in stray cats () in Beni-Suef, Egypt.

J Parasit Dis 2018 Dec 13;42(4):646-650. Epub 2018 Oct 13.

1Department of Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, 62511 Egypt.

Scarce literature studying parasites, particularly helminths, of gallbladder of cats in Egypt are available. Stray cats () are widespread in Beni-Suef, Egypt. Therefore, a total of 62 stray cats were necropsied and parasitologically examined. Read More

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December 2018

Morphological and molecular characterization of invasive Biomphalaria straminea in southern China.

Infect Dis Poverty 2018 Dec 8;7(1):120. Epub 2018 Dec 8.

National Institute of Parasitic Diseases, Chinese Center for Diseases Control and Prevention; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, 200025, China.

Background: Schistosomiasis is a common parasitic disease designated as a neglected tropical disease by the World Health Organization. Schistosomiasis mansoni is a form of the disease that is caused by the digenean trematode Schistosoma mansoni, transmitted through Biomphalaria spp. as an intermediate host. Read More

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December 2018

Whole-genome sequence of the oriental lung fluke Paragonimus westermani.

Gigascience 2018 Dec 6. Epub 2018 Dec 6.

The University of Queensland Diamantina Institute, Brisbane, QLD, Australia.

Background: Foodborne infections caused by lung flukes of the genus Paragonimus are a significant and widespread public health problem in tropical areas. Around 50 Paragonimus species have been reported to infect animals and humans, but Paragonimus westermani is responsible for the bulk of human disease. Despite their medical and economic importance, no genome sequence for any Paragonimus species is available. Read More

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December 2018
5 Reads

Oxfendazole: a promising agent for the treatment and control of helminth infections in humans.

Expert Rev Anti Infect Ther 2018 Dec 1. Epub 2018 Dec 1.

e Johns Hopkins Bloomberg School of Public Health , 615 N. Wolfe Street, Baltimore , MD 21205 , USA.

Introduction: Oxfendazole (methyl [5-(phenylsulphinyl)-1H benzimidazole- 2-yl] carbamate) has a particularly long metabolic half-life in ruminants, and its metabolite fenbendazole also has anthelminthic action. A very limited number of drugs are available for the treatment of some zoonotic helminth infections, such as neurocysticercosis and echinococcosis. More recent work has expanded oxfendazole's non-clinical safety profile and demonstrated its safety and bioavailability in healthy human volunteers, thus advancing the possibility of a new and greatly needed option for antiparasitic treatment of geohelminths and tissue parasites. Read More

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December 2018
1 Read

Spatio-temporal population genetic structure, relative to demographic and ecological characteristics, in the freshwater snail Biomphalaria pfeifferi in Man, western Côte d'Ivoire.

Genetica 2018 Nov 29. Epub 2018 Nov 29.

Centre d'Ecologie Fonctionnelle et Evolutive, UMR 5175, CNRS, IRD, Université de Montpellier, Université Paul Valéry Montpellier, EPHE, 1919 route de Mende, 34293, Montpellier Cedex 5, France.

Combining the analysis of spatial and temporal variation when investigating population structure enhances our capacity for unravelling the biotic and abiotic factors responsible for microevolutionary change. This work aimed at measuring the spatial and temporal genetic structure of populations of the freshwater snail Biomphalaria pfeifferi (the intermediate host of the trematode Schistosoma mansoni) in relation to the mating system (self-fertilization), demography, parasite prevalence and some ecological parameters. Snail populations were sampled four times in seven human-water contact sites in the Man region, western Côte d'Ivoire, and their variability was measured at five microsatellite loci. Read More

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November 2018
1 Read

Trematode Parasite Infection Affects Temperature Selection in Aquatic Host Snails.

Physiol Biochem Zool 2019 Jan/Feb;92(1):71-79

Animals infected by parasites or pathogens can exhibit altered behaviors that may reduce the costs of infection to the host or represent manipulations that benefit the parasite. Given that temperature affects many critical physiological processes, changes in thermoregulatory behaviors are an important consideration for infected hosts, especially ectotherms. Here we examined the temperature choices of freshwater snails (Helisoma trivolvis) that were or were not infected by a trematode (flatworm) parasite (Echinostoma trivolvis). Read More

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November 2018
1 Read

Endoparasites of Jungle Cats () and Their Pathologic Lesions.

Iran J Parasitol 2018 Jul-Sep;13(3):480-485

Dept. of Pathology, Babol Branch, Islamic Azad University, Babol, Iran.

Background: The jungle cats () are native to Asia, and found in Iran. Although north of Iran has a wide distribution of jungle cats, there is not any data about prevalence of parasitic infections in the population of these cats.

Methods: From 2012 to 2015, seven specimens of the wild jungle cat () from north of Iran, Mazandaran Province, northern Iran were collected and examined for their endoparasites and pathological lesions which were caused by the parasites. Read More

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November 2018
1 Read

Parasitic Helminths in Wild Boars () in Mazandaran Province, Northern Iran.

Iran J Parasitol 2018 Jul-Sep;13(3):416-422

Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran.

Background: Wild boars () are distributed worldwide and found in many parts of Iran. Although is reservoirs for many parasites, there is little data on helminthic prevalence in them. We aimed to survey the status of helminthic infections in in the Mazandaran Province of northern Iran. Read More

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November 2018
1 Read

A Preliminary Study of a Lettuce-Based Edible Vaccine Expressing the Cysteine Proteinase of for Fasciolosis Control in Livestock.

Front Immunol 2018 13;9:2592. Epub 2018 Nov 13.

Department of Bioengineering, Institute of Biotechnology and Antibiotics, Warsaw, Poland.

Oral vaccination with edible vaccines is one of the most promising approaches in modern vaccinology. Edible vaccines are an alternative to conventional vaccines, which are typically delivered by injection. Here, freeze-dried transgenic lettuce expressing the cysteine proteinase of the trematode (CPFhW) was used to orally vaccinate cattle and sheep against fasciolosis, which is the most important trematode disease due to the parasite's global distribution, wide spectrum of host species and significant economic losses of farmers. Read More

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November 2018
3 Reads

In silico modeling and structural analysis of asparaginyl endopeptidase of schistosoma mansoni (Sm32): Immunological and drug target implications.

Comput Biol Chem 2018 Nov 19;78:18-27. Epub 2018 Nov 19.

Unidad de Química Medicinal, Facultad de Farmacia, Universidad Central de Venezuela, Caracas 1051, Venezuela. Electronic address:

Asparaginyl endopeptidase (AE) of Schistosoma mansoni (Sm32), also known as legumain, is a cysteine protease indirectly involved in the digestion of hemoglobin of Schistosoma sp. in the gastrodermis, being a vaccine candidate against this trematode and a potential drug target. This study presents a model for the three-dimensional structure of Sm32 determined by means of homology modeling and a molecular dynamics simulation with explicit solvent refinement. Read More

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November 2018
2 Reads

Schistosomiasis in a Scottish school group after freshwater swimming in Uganda: the need to raise awareness.

JMM Case Rep 2018 Oct 25;5(10):e005166. Epub 2018 Sep 25.

Scottish Parasite Diagnostic and Reference Laboratory (SPDRL), NHS Greater Glasgow and Clyde, UK.

Introduction: Schistosomiasis, a travel-related trematode infection, can cause a range of symptoms with potentially life-threatening complications. In this report, we describe an outbreak of schistosomiasis in a Scottish school group that had travelled to Uganda. We discuss the requirement for robust and accurate pre-travel advice, and the importance of raising awareness in travellers, particularly due to the asymptomatic nature of the disease. Read More

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October 2018
1 Read

100 Questions in Livestock Helminthology Research.

Trends Parasitol 2018 Nov 23. Epub 2018 Nov 23.

Laboratory for Parasitology, Faculty of Veterinary Medicine, Ghent University, B9820 Merelbeke, Belgium.

An elicitation exercise was conducted to collect and identify pressing questions concerning the study of helminths in livestock, to help guide research priorities. Questions were invited from the research community in an inclusive way. Of 385 questions submitted, 100 were chosen by online vote, with priority given to open questions in important areas that are specific enough to permit investigation within a focused project or programme of research. Read More

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November 2018
3 Reads

Morphological and molecular data for species of Lecithaster Lühe, 1901 and Hysterolecithoides Yamaguti, 1934 (Digenea: Lecithasteridae) from fish of East Asia and phylogenetic relationships within the Hemiuroidea Looss, 1899.

J Helminthol 2018 Nov 26:1-13. Epub 2018 Nov 26.

Department of Parasitology,Asahikawa Medical University,Midorigaoka-Higashi 2-1,Hokkaido 078-8510,Japan.

Four representatives of the genus Lecithaster and one representative of the genus Hysterolecithoides were found during investigation of the trematode fauna of fish species in Vietnamese, Japanese and eastern coastal waters of the Russian Far East. Based on morphometric data, adult trematodes from Vietnamese Strongylura strongylura and Russian Acanthogobius flavimanus were identified as Lecithaster confusus, trematodes from Vietnamese Hemirhamphus marginatus as L. sayori and from osmerid fishes as L. Read More

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November 2018
1 Read

Amphistome infections in domestic and wild ruminants in East and Southern Africa: A review.

Onderstepoort J Vet Res 2018 Oct 18;85(1):e1-e13. Epub 2018 Oct 18.

Faculty of Veterinary Science, University of Zimbabwe, Zimbabwe; and, School of Life Sciences, University of KwaZulu-Natal, South Africa.

In this article, the main amphistome species infecting domestic and wild ruminants in East and Southern Africa, their snail intermediate hosts and epidemiological features are reviewed and discussed. Twenty-six amphistome species belonging to nine genera from three families occur in domestic and wild ruminants in the region under review and over 70% of them belong to the genera Calicophoron, Carmyerius and Cotylophoron. Of the amphistome species, 76. Read More

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October 2018
2 Reads

Endocrine and immune responses of larval amphibians to trematode exposure.

Parasitol Res 2018 Nov 19. Epub 2018 Nov 19.

Department of Ecology and Evolutionary Biology, University of Colorado Boulder, Boulder, CO, USA.

In nature, multiple waves of exposure to the same parasite are likely, making it important to understand how initial exposure or infection affects subsequent host infections, including the underlying physiological pathways involved. We tested whether experimental exposure to trematodes (Echinostoma trivolvis or Ribeiroia ondatrae) affected the stress hormone corticosterone (known to influence immunocompetence) in larvae representing five anuran species. We also examined the leukocyte profiles of seven host species after single exposure to R. Read More

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November 2018
3 Reads

Schistosomiasis in Malaysia: A review.

Acta Trop 2018 Nov 16;190:137-143. Epub 2018 Nov 16.

Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia.

Schistosomiasis, a neglected tropical parasitic disease caused by the trematode flatworms of the genus Schistosoma, affects approximately 207 million people worldwide. Among the five main species infecting humans, Schistosoma mansoni and S. japonicum are responsible for the majority of hepatointestinal schistosomiasis. Read More

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November 2018
1 Read

Anthelmintics - From Discovery to Resistance III (Indian Rocks Beach, FL, 2018).

Int J Parasitol Drugs Drug Resist 2018 Dec 5;8(3):494-495. Epub 2018 Nov 5.

Department of Biomedical Sciences, Iowa State University, Ames, IA, 50011, USA. Electronic address:

The third scientific meeting in the series "Anthelmintics: From Discovery to Resistance" was held in Indian Rocks Beach, Florida, at the end of January 2018. The meeting focused on a variety of topics related to the title, including the identification of novel targets and new leads, the mechanism of action of existing drugs and the genetic basis of resistance against them. Throughout there was an emphasis on the exploitation of new technologies and methods to further these aims. Read More

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December 2018
1 Read

Parasitic infections in relation to practices and knowledge in a rural village in Northern Thailand with emphasis on fish-borne trematode infection.

Epidemiol Infect 2018 Nov 15:1-12. Epub 2018 Nov 15.

Section of Parasitology, Faculty of Pharmacy and Food Sciences, Department of Biology, Healthcare and the Environment,University of Barcelona,Barcelona,Spain.

The present study integrates several aspects of a parasitological survey in a rural community village combining community knowledge of parasites, their potential transmission routes and health risk factors. A rural community located in Northern Thailand was surveyed for intestinal parasites, and an overall prevalence of 45.2% for helminths and 4. Read More

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November 2018
6 Reads

Infections with Digenean Trematode Metacercariae in Two Invasive Alien Fish, Micropterus salmoides and Lepomis macrochirus, in Two Rivers in Chungcheongbuk-do, Republic of Korea.

Korean J Parasitol 2018 Oct 31;56(5):509-513. Epub 2018 Oct 31.

Department of Parasitology, Medical Research Institute and Parasite Resource Bank, School of Medicine, Chungbuk National University, Cheongju 28644, Korea.

Present study was performed to survey infection status of digenetic trematode metacercariae in 2 alien fish species, Micropterus salmoides (largemouth bass) and Lepomis macrochirus (bluegill), in 2 rivers draining Chungcheongbuk-do, Republic of Korea. A total of 107 largemouth bass and 244 bluegills were caught in Daecheong-ho (ho=lake) and Musim-cheon (a branch of Geum-gang), in Chungcheongbuk-do April-July 2015. Additionally, 68 native fish of 5 species, i. Read More

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October 2018
11 Reads
0.960 Impact Factor

Morphological Characteristics and Fish Hosts of Isoparorchis sp. (Digenea: Isoparorchiidae) in Korea.

Korean J Parasitol 2018 Oct 31;56(5):501-507. Epub 2018 Oct 31.

Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea.

We described here the morphological characteristics for the species identification and fish hosts of Isoparorchis sp. (Digenea: Isoparorchiidae) in the Republic of Korea (Korea). Total 1,371 freshwater fishes collected in Yangcheon (Stream) in Sancheong-gun, Gyeongsangnam-do were examined by the artificial digestion methods to survey the infection status of digenetic trematode metacercariae for 4 years (2013-2016). Read More

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October 2018
4 Reads

Morphological Studies of Developmental Stages of Oculotrema hippopotami (Monogenea: Polystomatidae) Infecting the Eye of Hippopotamus amphibius (Mammalia: Hippopotamidae) Using SEM and EDXA with Notes on Histopathology.

Korean J Parasitol 2018 Oct 31;56(5):463-475. Epub 2018 Oct 31.

Mpumalanga Tourism and Parks Agency, Lydenburg, Mpumalanga Province, 1120, South Africa.

The present study was performed to observe histopathological effects of Oculotrema hippopotami Stunkard, 1924 infection in the eye of Hippopotamus amphibius, as well as to reveal new details of morphology and structural features of this monogenean and its comparison between 2 age stages of the parasite. This was done using both light and scanning electron microscopy, energy dispersive X-ray analysis (EDXA) and histopathology. The presence of a mixture of different generations (adult and sub-adult) in one host individual is common for Oculotrema Stunkard, 1924 in contrast to Polystoma Zeder, 1800. Read More

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October 2018
3 Reads

Distribution Status of Hybrid Types in Large Liver Flukes, Fasciola Species (Digenea: Fasciolidae), from Ruminants and Humans in Vietnam.

Korean J Parasitol 2018 Oct 31;56(5):453-461. Epub 2018 Oct 31.

Institute of Biotechnology (IBT), Vietnam Academy of Science and Technology (VAST) 18. Hoang Quoc Viet Rd, Cau Giay, Hanoi, Vietnam.

The aim of this study is to delineate 'admixed hybrid' and 'introgressive' Fasciola genotypes present in the Fasciola population in Vietnam. Adult liver flukes collected from ruminants in 18 Provinces were morphologically sorted out by naked eyes for small (S), medium (M) and large (L) body shapes; and human samples (n=14) from patients. Nuclear ribosomal (rDNA) ITS1 and ITS2, and mitochondrial (mtDNA) nad1 markers were used for determination of their genetic status. Read More

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October 2018

Sludge nematodes, cestodes, and trematodes eggs variation from lagooning, activated sludge and infiltration-percolation wastewater treatment system under semi-arid climate.

Environ Sci Pollut Res Int 2018 Nov 8. Epub 2018 Nov 8.

Laboratoire Ecologie et Environnement (Unité associée au CNRST, URAC 32), Faculté des Sciences Semlalia, Université Cadi Ayyad Marrakech, Marrakech, Morocco.

The prevalence and the identification of the helminth eggs load of raw sewage sludge was assessed of three different wastewater treatment systems. The results showed a variety of parasite species with following average concentrations; five taxa belonging to three classes nematodes, cestodes and trematodes were inventoried. The class of nematodes is the most diverse with 5 taxa. Read More

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November 2018
2 Reads

Risk factors for the presence of Fasciola hepatica antibodies in bulk-milk samples and their association with milk production decreases, in Cuban dairy cattle.

BMC Vet Res 2018 Nov 8;14(1):336. Epub 2018 Nov 8.

Kreavet, Hendrik Mertensstraat 17, 9150, Kruibeke, Belgium.

Background: Worldwide, Fasciola hepatica infection causes high production losses in the livestock industry. Recently, studies have analyzed the association between measurements of F. hepatica infection intensity and herd management practices. Read More

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November 2018
7 Reads

Biological and histological changes in reproductive patterns of Biomphalaria glabrata experimentally co-infected by Echinostoma paraensei and Angiostrongylus cantonensis.

Exp Parasitol 2018 Dec 25;195:66-70. Epub 2018 Oct 25.

Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fiocruz, Av. Brazil 4365, CEP 21040-30, Rio de Janeiro, Brazil.

Investigation of co-infection by different helminths in snails can provide essential information about the biology of parasites co-existence under natural conditions. This study aimed to investigate the reproductive and histological changes of Biomphalaria glabrata experimentally co-infected with Echinostoma paraensei and Angiostrongylus cantonensis. Five groups of snails i. Read More

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December 2018
2 Reads

Interactions between two parasites of brown trout (): Consequences of preinfection.

Ecol Evol 2018 Oct 29;8(20):9986-9997. Epub 2018 Sep 29.

Department of Biological and Environmental Science University of Jyväskylä Jyvaskyla Finland.

Preinfection by one parasitic species may facilitate or by contrast hamper the subsequent penetration and/or establishment of other parasites in a host. The biology of interacting species, timing of preinfection, and dosage of subsequent parasite exposure are likely important variables in this multiparasite dynamic infection process. The increased vulnerability to subsequent infection can be an important and often overlooked factor influencing parasite virulence. Read More

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October 2018
6 Reads

Phylogenetic analysis of the superfamily Hemiuroidea (Platyhelminthes, Neodermata: Trematoda) based on partial 28S rDNA sequences.

Parasitology 2018 Nov 5:1-8. Epub 2018 Nov 5.

Russian Federal Research Institute of Fisheries and Oceanography,Moscow, V. Krasnoselskaya Str., 17, 107140,Russia.

In the present paper, the phylogenetic relationships between genera, subfamilies and families of the Hemiuroidea are explored. Twelve new sequences of 28 rDNA and data taken from GenBank (NSBI) on 43 species affiliated to 34 genera were included in the analysis. Most of the hemiuroidean trematodes form two highly supported clades (A and B), which are sister groups to each other. Read More

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November 2018
5 Reads

Seroprevalence of bovine intestinal schistosomosis in different agro- ecological zones of south India using excretory-secretory antigen based ELISA.

Vet Parasitol 2018 Oct 27;262:51-55. Epub 2018 Sep 27.

Department of Veterinary Microbiology, Mannuthy, Thrissur Kerala-680651, India.

Intestinal schistosmosis caused by Schistosoma spindale and S. indicum is an important snail borne trematode infection that adversely affects the production and productivity of bovines in India. The present communication reports the high seroprevalence of infection among dairy cattle and buffaloes, under field conditions, utilizing a sensitive and specific excretory-secretory antigen based ELISA. Read More

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October 2018
3 Reads

Management of presumed trematode induced granulomatous uveitis in pediatric patients.

Jpn J Ophthalmol 2018 Nov 2. Epub 2018 Nov 2.

Pathology Department, Faculty of Medicine, Sohag University, Sohâg, Egypt.

Purpose: To outline the management of newly identified trematode induced uveitis in pediatric patients STUDY DESIGN: Prospective interventional case series METHODS: Patients with distinctive uveitis were recruited to either receive steroid monotherapy or undergo surgical excision of the inflammatory lesions based on a scoring system. Outcome measures included best corrected visual acuity (BCVA), intraocular inflammatory activity, and incidence of ophthalmic complications RESULTS: 170 patients (174 eyes) were recruited. Mean age was 11. Read More

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November 2018
5 Reads
1.800 Impact Factor

The Mechanism of Action of Praziquantel: Six Hypotheses.

Curr Top Med Chem 2018 ;18(18):1575-1584

School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton, BN2 4GJ, United Kingdom.

Despite being one of the most commonly used drugs, the molecular mechanism of action of the anthelmintic praziquantel remains unknown. There are some unusual features of this drug. Critically, widespread resistance to praziquantel has not developed despite decades of use. Read More

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January 2018
12 Reads

First evidence of polychaete intermediate hosts for Neospirorchis spp. marine turtle blood flukes (Trematoda: Spirorchiidae).

Int J Parasitol 2018 Dec 25;48(14):1097-1106. Epub 2018 Oct 25.

Center for Tropical & Emerging Global Diseases, University of Georgia, Coverdell Room 370B, 500 D.W. Brooks Drive, Athens, GA 30602, USA; Center for Global Health Infectious Diseases Research, University of South Florida, 3270 Spectrum Blvd, Tampa, FL 33612, USA. Electronic address:

Life cycles of spirorchiids that infect the vascular system of turtles are poorly understood. Few life cycles of these blood flukes have been elucidated and all intermediate hosts reported are gastropods (Mollusca), regardless of whether the definitive host is a freshwater or a marine turtle. During a recent survey of blood fluke larvae in polychaetes on the coast of South Carolina, USA, spirorchiid-like cercariae were found to infect the polychaetes Amphitrite ornata (Terebellidae) and Enoplobranchus sanguineus (Polycirridae). Read More

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December 2018
5 Reads

Intermediate host switches drive diversification among the largest trematode family: evidence from the Polypipapiliotrematinae n. subf. (Opecoelidae), parasites transmitted to butterflyfishes via predation of coral polyps.

Int J Parasitol 2018 Dec 24;48(14):1107-1126. Epub 2018 Oct 24.

School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia.

Podocotyloides stenometra Pritchard, 1966 (Digenea: Opecoelidae) is the only trematode known to infect anthozoan corals. It causes disease in coral polyps of the genus Porites Link (Scleractinia: Poritidae) and its life-cycle depends on ingestion of these polyps by butterflyfishes (Perciformes: Chaetodontidae). This species has been reported throughout the Indo-Pacific, from the Seychelles to the Galápagos, but no study has investigated whether multiple species are involved. Read More

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December 2018
6 Reads

Come rain or come shine: environmental effects on the infective stages of Sparicotyle chrysophrii, a key pathogen in Mediterranean aquaculture.

Parasit Vectors 2018 Oct 25;11(1):558. Epub 2018 Oct 25.

Cavanilles Institute of Biodiversity and Evolutionary Biology, Science Park, University of Valencia, Paterna, Valencia, Spain.

Background: Evidence concerning the environmental influence on monogenean transmission and infection processes is widely accepted, although only the effects of a limited number of abiotic factors on particular monogenean species have been explored. The current context of climate change calls for further research both on this subject, and also that concerning monogenean hosts, especially in aquaculture.

Methods: In this study, four experiments were used to assess the response of the infective stages of Sparicotyle chrysophrii, a pathogenic monogenean from gilthead sea bream (Sparus aurata) cultures in the Mediterranean, to variations of temperature (from 10 °C to 30 °C), pH (7. Read More

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October 2018
1 Read

Fasciola hepatica-Pseudosuccinea columella interaction: effect of increasing parasite doses, successive exposures and geographical origin on the infection outcome of susceptible and naturally-resistant snails from Cuba.

Parasit Vectors 2018 Oct 25;11(1):559. Epub 2018 Oct 25.

University of Perpignan Via Domitia, Interactions Hosts Pathogens Environments UMR 5244, CNRS, IFREMER, Univ. Montpellier, F-66860, Perpignan, France.

Background: Pseudosuccinea columella is one of the most widespread vectors of Fasciola hepatica, a globally distributed trematode that affects humans, livestock and wildlife. The exclusive occurrence in Cuba of susceptible and naturally-resistant populations to F. hepatica within this snail species, offers a fascinating model for evolutionary biology, health sciences and vector control strategies. Read More

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October 2018
4 Reads

A molecular phylogenetic study of the caecal fluke of poultry, Postharmostomum commutatum (= P. gallinum) (Trematoda: Brachylaimidae).

Parasitol Res 2018 Dec 23;117(12):3927-3934. Epub 2018 Oct 23.

Laboratório de Biologia de Trematoda, Departament of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, 486, Belo Horizonte, Minas Gerais, 30123-970, Brazil.

Postharmostomum commutatum (Dietz, 1858), a parasite of the caeca of poultry, has been reported from many different parts of the world. Despite its importance, there are no molecular sequences available and its phylogenetic position is unknown in relation to other members of Brachylaimoidea, a group in which taxonomic confusion reigns. Here, morphological and molecular techniques were used to study digeneans from the caeca of free-range chickens found naturally infected in the municipality of Viçosa, state of Minas Gerais, Brazil, between August 2017 and May 2018. Read More

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December 2018
4 Reads

Review of five species of cyclocoelids (Digenea: Cyclocoelidae) from aquatic birds in Mexico with notes on their interspecific variation.

Syst Parasitol 2018 11 22;95(8-9):921-942. Epub 2018 Oct 22.

Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos Almirante Storni (CIMAS - CCT CONICET - CENPAT), Güemes 1030, 8520, San Antonio Oeste, Río Negro, Argentina.

Based on a morphological approach, five species of cyclocoelids (Digenea: Cyclocoelidae) are revised based on material from birds in Mexico. The species studied are: Cyclocoelum cf. leidyi Harrah, 1922 from the black-necked stilt Himantopus mexicanus Müller (Recurvirostridae); Cyclocoelum mutabile (Zeder, 1800) from the northern jacana Jacana spinosa L. Read More

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November 2018

Opistholobetines (Digenea: Opecoelidae) in Australian tetraodontiform fishes.

Syst Parasitol 2018 11 22;95(8-9):743-781. Epub 2018 Oct 22.

School of Biological Sciences, The University of Queensland, Brisbane, QLD, 4072, Australia.

Opistholebetine opecoelids are reported following examination of 1,041 individual tetraodontiform fishes, comprising 60 species and seven families, collected in Australian waters between 1986 and 2018. Nine species consistent with Opistholebes Nicoll, 1915, Heterolebes Ozaki, 1935 or Maculifer Nicoll, 1915 were recovered. However, phylogenetic analysis of sequence data, generated for some of these species, suggested that five genera, not three, are required to adequately accommodate these taxa. Read More

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November 2018
1 Read

Non-host organisms impact transmission at two different life stages in a marine parasite.

Parasitol Res 2018 Oct 21. Epub 2018 Oct 21.

Department of Zoology, University of Otago, PO Box 56, Dunedin, New Zealand.

The potential for local biodiversity to 'dilute' infection risk has been shown to be particularly important in aquatic trematodes, where non-host organisms can feed on free-living infective stages (cercariae) and reduce transmission rates to target hosts. Non-host organisms could also impact transmission during other stages of the trematode life cycle. In Philophthalmus spp. Read More

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October 2018
4 Reads

Morphological identification and molecular characterization of 18S rDNA of two hemiurid trematodes (Lecithocladium cristatum Rudolphi, 1819 and Lecithocladium parviovum Yamaguti, 1953) infecting the greater lizardfish Saurida tumbil (Pisces: Synodontidae) inhabiting the Red Sea.

Gene 2019 Jan 17;683:243-252. Epub 2018 Oct 17.

Department of Zoology, Faculty of Women for Arts, Science and Education, Ain Shams University, Heliopolis, Egypt.

A total of 100 specimens of the greater lizardfish Saurida tumbil were collected during the current investigation from the coasts of Hurghada City at the Gulf of Suez, Red Sea, Egypt; and necropsied to study their metazoan parasites. Of the total specimens collected, 32.0% were found to be naturally infected with hemiurid trematodes. Read More

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January 2019
1 Read

De novo genome and transcriptome analyses provide insights into the biology of the trematode human parasite Fasciolopsis buski.

PLoS One 2018 16;13(10):e0205570. Epub 2018 Oct 16.

Department of Zoology, North-Eastern Hill University, Shillong, Meghalaya, India.

Many trematode parasites cause infection in humans and are thought to be a major public health problem. Their ecological diversity in different regions provides challenging questions on evolution of these organisms. In this report, we perform transcriptome analysis of the giant intestinal fluke, Fasciolopsis buski, using next generation sequencing technology. Read More

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October 2018
4 Reads

Lepotrema Ozaki, 1932 (Lepocreadiidae: Digenea) from Indo-Pacific fishes, with the description of eight new species, characterised by morphometric and molecular features.

Syst Parasitol 2018 11 15;95(8-9):693-741. Epub 2018 Oct 15.

School of Biological Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia.

We review species of the genus Lepotrema Ozaki, 1932 from marine fishes in the Indo-West Pacific. Prior to the present study six species were recognised. Here we propose eight new species on the basis of combined morphological and molecular analysis: Lepotrema acanthochromidis n. Read More

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November 2018
1 Read

Consumer and host body size effects on the removal of trematode cercariae by ambient communities.

Parasitology 2018 Oct 15:1-6. Epub 2018 Oct 15.

Department of Coastal Systems,NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University,P.O. Box 59, 1790 AB den Burg, Texel,the Netherlands.

Parasite transmission can be altered via the removal of parasites by the ambient communities in which parasite-host interactions take place. However, the mechanisms driving parasite removal remain poorly understood. Using marine trematode cercariae as a model system, we investigated the effects of consumer and host body size on parasite removal rates. Read More

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October 2018
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Morphological and genetic characterization of green-banded broodsacs of Leucochloridium (Leucochloridiidae: Trematoda) sporocysts detected in Succinea lauta in Hokkaido, Japan.

Parasitol Int 2019 Feb 10;68(1):53-56. Epub 2018 Oct 10.

Laboratory of Veterinary Parasitology, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan; Department of Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan. Electronic address:

Green-banded broodsacs of Leucochloridium sporocysts were obtained from land snails, Succinea lauta, collected in Esashi, Esashi District, Hokkaido, Japan. The broodsacs were similar to those of L. paradoxum, which have never been found on the Japanese archipelago. Read More

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February 2019
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Spermatological characteristics of the family Glypthelminthidae (Digenea, Plagiorchioidea) inferred from the ultrastructural study of Glypthelmins staffordi Tubangui, 1928.

Tissue Cell 2018 Oct 29;54:114-119. Epub 2018 Aug 29.

Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Av. Joan XXIII, sn, 08028, Barcelona, Spain; Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Av. Diagonal, 645, 08028 Barcelona, Spain.

The present study describes the ultrastructural organization of the mature spermatozoon of the digenean Glypthelmins staffordi (Glypthelminthidae) by means of transmission electron microscopy. Live digeneans were collected from the Chinese edible frog (Hoplobatrachus rugulosus) in Udon Thani Province (Thailand). The ultrastructural study reveals that the mature spermatozoon of G. Read More

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October 2018
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Structural Analysis of an Epitope Candidate of Triosephosphate Isomerase in Opisthorchis viverrini.

Sci Rep 2018 Oct 10;8(1):15075. Epub 2018 Oct 10.

Division of Biotechnology, College of Life Sciences & Biotechnology, Korea University, Seoul, 136-701, South Korea.

Opisthorchis viverrini, a parasitic trematode, was recategorized as a group 1 biological carcinogen because it causes opisthorchiasis, which may result in cholangiocarcinoma. A new strategy for controlling opisthorchiasis is needed because of issues such as drug resistance and reinfection. Triosephosphate isomerase (TIM), a key enzyme in energy metabolism, is regarded as a potential drug target and vaccine candidate against various pathogens. Read More

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October 2018
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Interactive effects of contamination and trematode infection in cockles biochemical performance.

Environ Pollut 2018 Dec 22;243(Pt B):1469-1478. Epub 2018 Sep 22.

Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193, Aveiro, Portugal. Electronic address:

Anthropogenic activities, especially those involving substances that pollute the environment can interfere with bivalve populations, as well as parasitism, a fundamental ecological interaction often neglected. In marine environments, organisms are concomitantly exposed to pollutants and parasites, a combination with synergistic, antagonistic or additive effects representing a potential threat to aquatic communities sustainability. In the present study, Cerastoderma edule (the edible cockle)-Himasthla elongata (trematode) was used as host-parasite model. Read More

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December 2018
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Four new species of dactylogyrids (Monogenea: Dactylogyridae) parasitic on gills of labrid and sparid fishes from Southeastern Pacific Ocean off Peru.

Syst Parasitol 2018 11 5;95(8-9):829-840. Epub 2018 Oct 5.

Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Caixa Postal 74.540, Seropédica, RJ, CEP 23851-970, Brazil.

During a research on gill ectoparasites of Peruvian marine fishes, four dactylogyrid (Monogenea) species, parasitising two teleost species, Bodianus diplotaenia (Gill) (Labridae) and Calamus brachysomus (Lockington) (Sparidae), were found. Euryhaliotrema luisae n. sp. Read More

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November 2018

Heterobucephalopsine and prosorhynchine trematodes (Digenea: Bucephalidae) from teleost fishes of Moreton Bay, Queensland, Australia, with the description of two new species.

Syst Parasitol 2018 11 3;95(8-9):783-806. Epub 2018 Oct 3.

School of Biological Sciences, The University of Queensland, Brisbane, QLD, 4072, Australia.

Eight species of the trematode family Bucephalidae Poche, 1907 are reported from teleost fishes in Moreton Bay, Queensland, Australia. Heterobucephalopsis yongi n. sp. Read More

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November 2018
3 Reads

infection in human and nonhuman primates in selected areas of Oromia Regional State, Ethiopia.

J Vector Borne Dis 2018 Apr-Jun;55(2):116-121

Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia.

Background & Objectives: The transmission of schistosomiasis, caused by trematodes of the genus Schistosoma, relies on freshwater snails that act as an intermediate host while human and other mammalian act as the definitive hosts. Many non-human primates (NHPs) such as Chlorocebus aethiops (vervet) and Papio anubis (baboon) are reported to be infected with Schistosoma mansoni in Ethiopia, but the role they play in parasite maintenance and transmission is still not clear. The objective of this study was, therefore, to determine the prevalence of S. Read More

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December 2018
7 Reads