Acroeimeria lineri (McAllister, Upton, Freed, 1988) Paperna and Landsberg, 1989 in Mediterranean Geckos (Hemidactylus turcicus): Oocyst Morphometrics, Endogenous Developmental Stages, and Molecular Sequencing Support its Placement into Acroeimeria.
Abstract Between June 2016 and June 2019, we surveyed 62 Mediterranean geckos, Hemidactylus turcicus, from Abu Rawash, Giza, Egypt, for the presence of endoparasites. In June 2016, we found 3 individuals to be infected with Eimeria lineri. We studied the morphology and inner structures of its sporulated oocysts, and the locations of its intestinal endogenous stages. We also extracted genomic DNA from these sporulated oocysts and successfully sequenced a 632-bp fragment of the 18S rRNA gene. Phylogenetic analyses using this partial sequence allowed us to support previous studies that assigned E. lineri to the genus...
Source: The Journal of Parasitology - October 1, 2020 Category: Parasitology Authors: Abdel-Baki AS, Abdel-Haleem HM, Duszynski DW, Al-Quraishy S, Mansour L Tags: J Parasitol Source Type: research
Batracholandros salamandrae (Oxyuroidea: Pharyngodonidae) in Endemic Salamanders (Amphibia: Plethodontidae) of the Trans-Mexican Volcanic Belt: Host Range Wide Distribution or Cryptic Species Complex?
te;rez-Ponce de León G Abstract Salamanders of the tribe Bolitoglossini Hallowell are a highly diversified group of amphibians, and their helminth parasite fauna has been scarcely studied. Some species of plethodontid salamanders distributed along the Trans-Mexican Volcanic Belt, in central Mexico, were sampled, and their helminth parasites were recovered for taxonomic identification. Specimens of a pharyngodonid nematode from 2 species of bolitoglossines of the genus Pseudoeurycea Taylor were morphologically identified as Batracholandros salamandrae (Schad, 1960) Petter and Quentin, 1976. These specimens w...
Source: The Journal of Parasitology - October 1, 2020 Category: Parasitology Authors: Solórzano-García B, Falcón-Ordaz J, Parra-Olea G, Pérez-Ponce de León G Tags: J Parasitol Source Type: research
The Life Cycle of Heterophyes yacyretana n. sp. (Digenea, Heterophyidae), Parasitic in the Endemic Snail Aylacostoma chloroticum (Caenogastropoda, Thiaridae) in Argentina.
Laczkó ACM Abstract Here we describe a new heterophyid species, Heterophyes yacyretana n. sp., and resolve its life cycle experimentally. We found the prosobranch snail Aylacostoma chloroticum in Candelaria, Province of Misiones, Argentina (a sector of the High Paraná River affected by the Yacyretá Dam), naturally infected with opisthorchioid cercariae. These cercariae lacked pigmented eyespots as well as body pigment and possessed 7 pairs of penetration glands arranged in 2 lateral bands, together with 18 pairs of flame cells and a V-shaped excretory vesicle. We exposed specimens of 21 fish s...
Source: The Journal of Parasitology - October 1, 2020 Category: Parasitology Authors: de Núñez MO, Quintana MG, Laczkó ACM Tags: J Parasitol Source Type: research
Dracunculus Species in Meso-mammals from Georgia, United States, and Implications for the Guinea Worm Eradication Program in Chad, Africa.
Abstract The prevalence and diversity of parasitic nematodes in wildlife have been well studied for certain species, yet for others considerable gaps in knowledge exist. The parasitic nematode Dracunculus insignis infects North American wildlife, and past research on this species has led to an increased understanding of the potential host diversity and transmission of the closely related human Guinea worm, Dracunculus medinensis (which is currently the focus of a global eradication program). Many definitive hosts have been documented for D. insignis; however, the life cycle has been studied only in laboratories, a...
Source: The Journal of Parasitology - September 30, 2020 Category: Parasitology Authors: Cleveland CA, Eberhard ML, Garrett KB, Thompson AT, Swanepoel L, Miller EA, Stephens OL, Yabsley MJ Tags: J Parasitol Source Type: research
Avian and Emerging Human Oxyspirura Species Compared by Morphology, Pathogenicity, Intermediate Host, and Sequence Homology.
Abstract Based on sequence homology and phylogenetic tree results, the first report of eyeworm Oxyspirura species larvae has been confirmed in a human patient from Vietnam. However, important information related to Oxyspirura larvae was not presented in the case study. This comment provides a more detailed comparison of the Oxyspirura larvae found in the human case study to the avian eyeworm Oxyspirura petrowi. PMID: 33009555 [PubMed - as supplied by publisher] (Source: The Journal of Parasitology)
Source: The Journal of Parasitology - September 30, 2020 Category: Parasitology Authors: Kalyanasundaram A, Bastille MO, Lukashow-Moore SP, Kendall RJ Tags: J Parasitol Source Type: research
Oxyuricassis ekstromi n. sp. (Oxyurida: Pharyngodonidae) from Lasiancistrus saetiger (Siluriform: Loricariidae) from the Eastern Amazon.
Abstract Oxyuricassis ekstromi n. sp. is the third species of the genus described from the intestine of Lasiancistrus saetiger Armbruster in Brazil. This species can be easily differentiated from its congeners by the presence of a tooth-like sclerotized piece that occupies half of the stoma and absence of spine projections on the tail of both males and females. Also, males of the new species lack caudal alae present in Oxyuricassis coronatus and Oxyuricassis hexaspinatus. Additionally, we observed a different number and pattern of the distribution of cloacal papilla; males of O. coronatus and O. hexaspinatus have ...
Source: The Journal of Parasitology - September 30, 2020 Category: Parasitology Authors: Rodrigues ARO, Wilkens Y, Melo FTV, Gardner SL, Santos JN Tags: J Parasitol Source Type: research
Development of a Droplet Digital PCR for Detection of Trichuriasis in Sheep.
Abstract Trichuriasis is a serious threat to the economic development of animal husbandry. This research aimed to establish a droplet digital PCR (ddPCR) method to detect Trichuris spp. for the early diagnosis and prevention of trichuriasis in sheep. The real-time quantitative PCR (qPCR) and ddPCR methods were used for the detection of nematodes by targeted amplification of the ITS gene. Each means was evaluated to optimize the limit of detection and reproducibility. For a recombinant plasmid, the qPCR results showed that the detection limit was 31.7 copies per reaction. In contrast to qPCR, ddPCR was able to dete...
Source: The Journal of Parasitology - September 30, 2020 Category: Parasitology Authors: Yu Z, Zhao Z, Chen L, Li J, Ju X Tags: J Parasitol Source Type: research
Native and Introduced Trypanosome Parasites in Endemic and Introduced Murine Rodents of Sulawesi.
Abstract The Indonesian island of Sulawesi is a globally significant biodiversity hotspot with substantial undescribed biota, particularly blood-borne parasites of endemic wildlife. Documenting the blood parasites of Sulawesi's murine rodents is the first fundamental step towards the discovery of pathogens likely to be of concern for the health and conservation of Sulawesi's endemic murines. We screened liver samples from 441 specimens belonging to 20 different species of murine rodents from 2 mountain ranges on Sulawesi, using polymerase chin reaction (PCR) primers targeting the conserved 18S rDNA region across t...
Source: The Journal of Parasitology - September 17, 2020 Category: Parasitology Authors: Winterhoff ML, Achmadi AS, Roycroft EJ, Handika H, Putra RTJ, Rowe KMC, Perkins SL, Rowe KC Tags: J Parasitol Source Type: research
Ex Uno Plures? Morphotype and Lineage Diversity of Bothriocephalus (Cestoda: Bothriocephalidea) in North American Freshwater Fishes.
Abstract Morphological and molecular evaluation of tapeworms of the genus Bothriocephalus Rudolphi, 1808 (Cestoda: Bothriocephalidea), based on newly collected and uniformly fixed worms from freshwater fishes in Canada and the United States has revealed unexpected diversity. With a combination of selected morphological features and 4 molecular markers (18S rDNA V8 region, ITS1, ITS2, and COI gene sequences), the following morphotypes and lineages of the Bothriocephalus cuspidatus Cooper, 1917 complex were identified, several of which are specific to their respective fish definitive hosts and may represent separate...
Source: The Journal of Parasitology - September 17, 2020 Category: Parasitology Authors: Choudhury A, Scholz T Tags: J Parasitol Source Type: research
Regulation of Proinflammatory Enzymes by Peroxisome Proliferator-Activated Receptor Gamma in Astroglia Infected with Toxoplasma gondii.
This study aims to investigate the correlation between PPARγ and proinflammatory enzyme expression in astroglia infected with Toxoplasma gondii tachyzoite in vitro. Our results showed that matrix metalloprotease (MMP)-2, MMP-9, cyclooxygenase-2 (COX-2), prostaglandin (PGE)-2, inducible nitric-oxide synthase (iNOS), and nitric oxide (NO) were significantly increased in T. gondii-infected astroglia. Furthermore, the expression levels of MMP-2, MMP-9, COX-2, PGE-2, iNOS, and NO were significantly decreased by rosiglitazone-a PPARγ agonist. By contrast, the treatment with GW9662, a PPARγ antagonist, efficient...
Source: The Journal of Parasitology - September 13, 2020 Category: Parasitology Authors: Shyu LY, Chen KM, Lu CY, Lai SC Tags: J Parasitol Source Type: research
Molecular and Morphological Elucidation of the Life Cycle of the Frog Trematode Langeronia macrocirra (Digenea: Pleurogenidae) in Los Tuxtlas, Veracruz, Mexico.
oacute;n GP Abstract The genus LangeroniaCaballero and Bravo-Hollis, 1949, currently contains 6 species of amphibian trematodes distributed in North and Middle America. The type species of the genus, Langeronia macrocirraCaballero and Bravo-Hollis, 1949, occurs in Mexico and is relatively commonly found as a parasite of leopard frogs. However, information regarding its life cycle is lacking. In this paper, we study the life cycle of L. macrocirra in Laguna Escondida, Los Tuxtlas, Veracruz. Definitive hosts (Rana spp.) as well as potential intermediate hosts (gastropods, bivalves, crustaceans, tadpoles, hemipterans...
Source: The Journal of Parasitology - September 13, 2020 Category: Parasitology Authors: Velázquez-Urrieta Y, de León GP Tags: J Parasitol Source Type: research
First report of Newly Identified Ornithodoros Species in the Republic of Korea.
In this study, samples from the nests of seabirds and surrounding soil were collected to investigate Ornithodoros spp. from 9 uninhabited islands in the western, eastern, and southern parts of Korea from April 2017 to October 2018. The islands are known as the breeding places of migratory and resident birds. Ticks were collected from soil and nest material of seabirds using a Tullgren funnel and identified using 16S rRNA and the cytochrome c oxidase 1 gene (COI), and host animals of soft ticks were identified using the mitochondrial DNA cytochrome b gene by a polymerase chain reaction. In the sequence identity of the 16S r...
Source: The Journal of Parasitology - September 13, 2020 Category: Parasitology Authors: Han SW, Chae JB, Jo YS, Cho YK, Kang JG, Shin NS, Youn HJ, Youn HY, Nam HM, Kim HJ, Kang HE, Chae JS Tags: J Parasitol Source Type: research
Proteomic Profiling Reveals New Insights into the Allergomes of Anisakis simplex, Pseudoterranova decipiens, and Contracaecum osculatum.
cek T Abstract Anisakis simplex, Pseudoterranova decipiens, and Contracaecum osculatum third-stage larvae (L3) are fish-borne nematodes that can cause human anisakidosis. Although A. simplex is a known source of allergens, knowledge about the allergic potential of P. decipiens and C. osculatum is limited. Therefore, we performed comparative proteomic profiling of A. simplex, P. decipiens, and C. osculatum L3 larvae using liquid chromatography-tandem mass spectrometry. In total, 645, 397, and 261 proteins were detected in A. simplex, P. decipiens, and C. osculatum L3 larvae, respectively. Western blot analysis conf...
Source: The Journal of Parasitology - September 10, 2020 Category: Parasitology Authors: Kochanowski M, Dąbrowska J, Różycki M, Karamon J, Sroka J, Cencek T Tags: J Parasitol Source Type: research
Epitope Analysis and Efficacy Evaluation of Phosphatase 2C (PP2C) DNA Vaccine Against Toxoplasma gondii Infection.
In this study, bioinformatics analysis of PP2C revealed some useful information in the context of anti-toxoplasmosis treatments and vaccine research. In addition, the PP2C gene was amplified, and a eukaryotic expression vector (pEGFP-PP2C) was successfully constructed to express PP2C. Finally, the constructed pEGFP-PP2C was injected into mice to evaluate whether it could induce immunoprotection. Compared with the control groups, we found that immunizations with the pEGFP-PP2C plasmid could elicit specific IgG antibodies and cytokines against T. gondii infection. The survival of mice immunized with the pEGFP-PP2C plasmid wa...
Source: The Journal of Parasitology - July 31, 2020 Category: Parasitology Authors: Song PX, Yao SH, Yao Y, Zhou J, Li QF, Cao YH, He SY Tags: J Parasitol Source Type: research
Cryptobia iubilans Infections in Discus Fish in Trinidad and Tobago.
Abstract Discus (Symphysodon spp.) are costly and prized specimens in the international ornamental fish trade. The majority of discus submitted to the Aquatic Animal Health Unit at the University of the West Indies School of Veterinary Medicine for necropsy between September 2010 and September 2015 had lesions consistent with Cryptobia iubilans infection, thus prompting this study. To determine the prevalence of the flagellated gastrointestinal protozoan C. iubilans in discus fish, 32 discus were sourced from 10 suppliers, including breeders, importers, and hobbyists across Trinidad. Fish were euthanized, and the ...
Source: The Journal of Parasitology - July 31, 2020 Category: Parasitology Authors: Phillips Savage ACN, Suepaul R, Smith SA, Ali A, Ramcharan N, Ramnarine S, Sookdeo R Tags: J Parasitol Source Type: research
RNA-seq: The early response of the snail Physella acuta to the digenetic trematode Echinostoma paraensei.
Abstract To analyze the response of the snail Physella acuta to Echinostoma paraensei, a compatible digenetic trematode, Illumina RNA-seq data were collected from snails with early infection (5 snails at 2 days post-exposure [DPE]) and established infection (4 snails, 8 DPE), and 7 control (unexposed) snails. A reference transcriptome (325,563 transcripts, including 98% of eukaryotic universal single-copy orthologs; BUSCO) and a draft P. acuta genome (employing available genomic Illumina reads; 799,945 scaffolds, includes 88% BUSCO genes) were assembled to guide RNA-seq analyses. Parasite exposure of P. acuta led ...
Source: The Journal of Parasitology - July 31, 2020 Category: Parasitology Authors: Schultz JH, Bu L, Kamel B, Adema CM Tags: J Parasitol Source Type: research
A New Species of Gordionus (Nematomorpha: Gordiida) from the Rocky Mountains of New Mexico.
Abstract The 19 genera within the phylum Nematomorpha contain approximately 350 species. The cosmopolitan genus Gordionus Müller, 1926 contains about 58 species, 6 of which occur in the contiguous United States of America. Recently, 2 new Gordionus species were described from high-altitude streams within the southern Rocky Mountains, near Santa Fe, New Mexico. Here we describe another new Gordionus species, from a high-altitude stream in the southern Rocky Mountains, from near Taos, New Mexico. The sites consisted of temporary puddles and a small human-made stream at 3,175-3,250-m altitude in aspen/pine woodl...
Source: The Journal of Parasitology - July 18, 2020 Category: Parasitology Authors: Swanteson-Franz RJ, Schmidt-Rhaesa A, Bolek MG, Hanelt B Tags: J Parasitol Source Type: research
Two New Species of Sucking Lice (Phthiraptera: Anoplura: Hoplopleuridae and Polyplacidae) from Grant's Rock Mouse, Micaelamys granti, in South Africa.
Abstract Two new species of sucking lice (Phthiraptera: Anoplura), Hoplopleura granti n. sp. (Hoplopleuridae) and Polyplax megacephalus n. sp. (Polyplacidae), are described from Grant's rock mouse, Micaelamys granti (Wroughton), from Northern Cape Province, South Africa. Adults of both sexes are illustrated via line drawings and differential interference contrast microscopy images, and are compared with previously described related species that parasitize related hosts: Hoplopleura patersoni Johnson from Aethomys chrysophilus (de Winton) (red veld rat), Aethomys kaiseri (Noack) (Kaiser's aethomys), and Micaelamys ...
Source: The Journal of Parasitology - July 18, 2020 Category: Parasitology Authors: Durden LA, Matthee S, Bothma JC, Greiman SE, Matthee CA Tags: J Parasitol Source Type: research
Zoonotic Transmission of Cryptosporidium and Microsporidia in Individuals of the Kurdistan Province, West of Iran.
This study aimed to evaluate the distribution and zoonotic transmission routes of Cryptosporidium species and microsporidia to humans referred to medical laboratories of Kurdistan Province, Iran. A total of 1,383 stool samples were collected and investigated. Cryptosporidium spp. and microsporidia were detected using microscopic methods (i.e., formol-ether concentration, Ziehl-Neelsen staining, and modified trichrome staining methods). DNA was extracted from positive samples, and specific fragments of the Cryptosporidium GP60 gene and microsporidia SSU rRNA gene were amplified. Furthermore, positive samples were sequenced ...
Source: The Journal of Parasitology - July 10, 2020 Category: Parasitology Authors: Bahrami F, Haghighi A, Zamini G, Khademerfan M Tags: J Parasitol Source Type: research
Protozoan and Helminth Infections of Aviary-Reared Alectoris rufa (Galliformes: Phasianidae) before Releasing for Hunting in the Czech Republic: Infection Dynamics and Potential Risks.
acute;sek I Abstract Age-related dynamics of protozoan and helminth infections in the red-legged partridge, Alectoris rufa, were studied in an intensive breeding aviary in the Czech Republic before releasing birds for hunting purposes. Pooled fecal samples (n = 900) were examined over 3 rearing seasons (2012-2014). A total of 4 protozoan species, Cryptosporidium baileyi, Cryptosporidium meleagridis, Eimeria kofoidi, and Eimeria legionensis, and 4 helminths, Capillaria phasianina, Eucoleus perforans, Heterakis gallinarum, and Syngamus trachea, was found. The most common parasite was S. trachea (prevalence 20-26%) i...
Source: The Journal of Parasitology - July 4, 2020 Category: Parasitology Authors: Máca O, Pavlásek I Tags: J Parasitol Source Type: research
The Molecular Profile of Rhadinorhynchus dorsoventrospinosus Amin, Heckmann, and Ha 2011 (Acanthocephala: Rhadinorhynchidae) from Vietnam.
Abstract Of the 46 known species of Rhadinorhynchus Lühe, 1911, only 6 species, including Rhadinorhynchus dorsoventrospinosus Amin, Heckmann, and Ha, 2011, have dorsal and ventral, as well as lateral, trunk spines in the posterior field of trunk spines. The other 5 species are Rhadinorhynchus erumei Gupta and Fatima, 1981, Rhadinorhynchus adenati (Golvan and Houin, 1964) Golvan, 1969, Rhadinorhynchus lintoni Cable and Linderoth, 1963, Rhadinorhynchus pacificus Amin, Rubtsova, and Ha, 2019, and Rhadinorhynchus multispinosus Amin, Rubtsova, and Ha, 2019. These 5 species are distinguished from R. dorsoventrospin...
Source: The Journal of Parasitology - June 28, 2020 Category: Parasitology Authors: Chaudhary A, Amin OM, Heckmann R, Singh HS Tags: J Parasitol Source Type: research
Coccidian Parasites of Flying Squirrels, Glaucomys spp. (Rodentia: Sciuridae), from Alaska and Arkansas, with a Description of a New Species of Eimeria (Apicomplexa: Eimeriidae).
Abstract New World flying squirrels, Glaucomys spp., are nocturnal arboreal sciurid rodents that have been previously surveyed for coccidial parasites. To date, 4 species of Eimeria have been reported from 2 species of Glaucomys. Here we report 2 species of eimerians from southern flying squirrels (Glaucomys volans) and the endemic Prince of Wales flying squirrel (Glaucomys sabrinus griseifrons). Oocysts of Eimeria dorneyi Levine and Ivens were found to be passing in the feces of 4 G. s. griseifrons from Alaska and a new species of Eimeria was present in feces from 6 G. volans from Arkansas. Oocysts of Eimeria hni...
Source: The Journal of Parasitology - May 31, 2020 Category: Parasitology Authors: McAllister CT, Motriuk-Smith D, McCurdy H, Seville RS, Flaherty EA Tags: J Parasitol Source Type: research
Seroprevalence of Toxoplasma gondii Infection and Associated Factors in Sheep from Jalisco, Mexico.
The objective of the study was to identify the seroprevalence of anti-Toxoplasma gondii antibodies in sheep herds from 3 municipalities from Jalisco, Mexico, as well as estimate the association between seroprevalence and certain factors presents in the farms. In total, 12 sheep farms that maintain only hair breeds were included in the work. From these farms, 336 blood samples were collected, corresponding 324 to ewes and 12 rams. Serum samples were subjected to ELISA test, and the association between the frequency of antibodies and some potential risk factors was estimated. The overall seroprevalence to anti-T. gondii anti...
Source: The Journal of Parasitology - May 31, 2020 Category: Parasitology Authors: Cruz-Vázquez C, De Velasco-Reyes I, Vitela-Mendoza I Tags: J Parasitol Source Type: research
Prevalence and Genotyping of Toxoplasma gondii in Cats, Rats, and Chickens in Border Areas of Yunnan Province, China.
The objective of the present study was to determine the characterization of Toxoplasma gondii in cats, rats, and chickens in the border areas of Yunnan Province. A total of 259 samples was collected from 10 border areas in Yunnan Province including 94 cats, 58 rats, and 107 chickens. Samples were screened by a nested polymerase chain reaction (PCR) assay and the positive products were analyzed by multilocus PCR-restriction fragment length polymorphism (RFLP) to determine the genotypes. Toxoplasma gondii deoxyribonucleic acid (DNA) was detected from 15.96% of 94 cats, 15.52% of 58 rats, and 6.54% of 107 chickens, respective...
Source: The Journal of Parasitology - May 31, 2020 Category: Parasitology Authors: Song HY, Liu Y, Chen K, Chang JY, Zou Y, Yang JF, Dai FY, Zou FC Tags: J Parasitol Source Type: research
Host Population Expansion and the Genetic Architecture of the Pinniped Hookworm Uncinaria lucasi.
Abstract The long-term fidelity of pinniped hosts to their natal rookery site suggests the genetic architecture of their Uncinaria spp. hookworms should be strongly structured by host breeding biology. However, historical events affecting host populations may also shape parasite genetic structure. Sequences of the mitochondrial cytochrome c oxidase 1 (COI) gene of 86 Uncinaria lucasi individuals were obtained to assess genetic variation and structure of nematodes from 2 host species (68 hookworms from northern fur seals; 18 hookworms from Steller sea lions) and rookeries from 3 widely separated geographic regions:...
Source: The Journal of Parasitology - May 31, 2020 Category: Parasitology Authors: Davies K, Pagan C, Nadler SA Tags: J Parasitol Source Type: research
ERRATUM. J Parasitol. 2020 Jun 01;106(3):382 Authors: PMID: 32437535 [PubMed - in process] (Source: The Journal of Parasitology)
Source: The Journal of Parasitology - May 23, 2020 Category: Parasitology Tags: J Parasitol Source Type: research
Intraspecific Variation in Growth and Reproduction of the Marine Leech, Heptacyclus buthi.
Abstract Heptacyclus buthi was harvested from fish hosts in rocky intertidal zones of Sonoma and Marin Counties, California, in October 2008 (n = 162) and October 2010 (n = 51). The size of the leeches was quantified using a method that approximated the sagittal cross-section of each specimen. Size-frequency curves were modeled to estimate the number of size-class cohorts in each year. If H. buthi is an annual species like many of its relatives, the single cohort modeled for in 2010 and the comparable "older" cohort in 2008, both with a broad range of sizes, may represent 1 component of its reproductive ...
Source: The Journal of Parasitology - May 22, 2020 Category: Parasitology Authors: Kim BY, Buth DG Tags: J Parasitol Source Type: research
Benznidazole/Poloxamer 407 Solid Dispersion as a New Strategy to Improve the Treatment of Experimental Trypanosoma cruzi Infection.
da LA Abstract Benznidazole and nifurtimox are the only drugs specifically approved for the treatment of Chagas disease. Both compounds are given orally in tablets, but occasionally are ineffective and cause adverse effects. Benznidazole, the first-line treatment in many countries, is a compound with low solubility in water that is administered at high doses for long periods of time. To improve its solubility, we developed a new liquid formulation on the basis of solid dispersions (SD) using the amphiphilic polymer poloxamer 407. Herein we present data on its trypanocidal performance in mouse models of acute and c...
Source: The Journal of Parasitology - May 6, 2020 Category: Parasitology Authors: Davies C, Simonazzi A, Micheloud JF, Ragone PG, Cid AG, Negrette OS, Bermúdez JM, Parada LA Tags: J Parasitol Source Type: research
Helminth Parasites of Three Anuran Species during Reproduction and Drought in the Brazilian Semiarid Caatinga Region.
This study also presents new helminth fauna records for R. jimi and P. diplolister, and the first helminth fauna record of R. granulosa from the Caatingas in semiarid Brazil. PMID: 32369595 [PubMed - as supplied by publisher] (Source: The Journal of Parasitology)
Source: The Journal of Parasitology - May 6, 2020 Category: Parasitology Authors: Madelaire CB, Franceschini L, Morais DH, Gomes FR, da Silva RJ Tags: J Parasitol Source Type: research
Survey of toxoplasma gondii exposure in muskrats in a relatively pristine ecosystem.
This study establishes a baseline to compare T. gondii waterborne transmission risks in other human-modified watersheds. PMID: 32294183 [PubMed - as supplied by publisher] (Source: The Journal of Parasitology)
Source: The Journal of Parasitology - April 6, 2020 Category: Parasitology Authors: Ahlers A, Wolf TM, Aarrestad O, Windels SK, Olson BT, Matykiewicz BR, Dubey JP Tags: J Parasitol Source Type: research
Stemmatostoma cribbi n. sp. (digenea: cryptogonimidae) from freshwater fishes in the wet tropics bioregion of queensland, australia.
STEMMATOSTOMA CRIBBI N. SP. (DIGENEA: CRYPTOGONIMIDAE) FROM FRESHWATER FISHES IN THE WET TROPICS BIOREGION OF QUEENSLAND, AUSTRALIA. J Parasitol. 2020 Apr 07;: Authors: Miller T, Adlard RD Abstract A survey of the parasite fauna of freshwater fishes from Wet Tropics Bioregion in Queensland, Australia, revealed the presence of a new species of Stemmatostoma Cribb, 1986 (Digenea: Cryptogonimidae). Stemmatostoma cribbi n. sp. is described from the intestine and pyloric caeca of 2 species of grunter (Terapontidae), Hephaestus fuliginosus (Macleay) and Hephaestus tulliensis (De Vis) and the Jungle perch (K...
Source: The Journal of Parasitology - April 6, 2020 Category: Parasitology Authors: Miller T, Adlard RD Tags: J Parasitol Source Type: research
Causes of fatal cyathostomiasis in brown booby (sula leucogaster) from brazil: identification of pathogen and implications for management.
CAUSES OF FATAL CYATHOSTOMIASIS IN BROWN BOOBY (SULA LEUCOGASTER) FROM BRAZIL: IDENTIFICATION OF PATHOGEN AND IMPLICATIONS FOR MANAGEMENT. J Parasitol. 2020 Apr 07;: Authors: Cardoso RNR, Baldassin P, Jerdy H, Carvalho EC, Kanarek G, Zaleśny G, Werneck MR Abstract Fatal infection by Cyathostoma ( Cyathostoma ) phenisci Baudet, 1937 (Nematoda: Syngamidae) was identified in two out 52 brown boobies ( Sula lecucogaster Boddaert, 1783) collected on beaches in the state of Rio de Janeiro, Brazil, and admitted to the veterinary clinic for rehabilitation. Both infected birds were in poor physical condition,...
Source: The Journal of Parasitology - April 6, 2020 Category: Parasitology Authors: Cardoso RNR, Baldassin P, Jerdy H, Carvalho EC, Kanarek G, Zaleśny G, Werneck MR Tags: J Parasitol Source Type: research
Tapeworms (Cestoda) of ictalurid catfishes (Siluriformes) in North America: redescription of type species of two genera and proposal of Essexiellinae n. subfam.
Abstract Ictalurid catfishes (Siluriformes) in North America harbor proteocephalid tapeworms of the subfamily Corallobothriinae. Type species of 2 of 3 genera of these tapeworms from ictalurids are redescribed, based on museum and newly collected material. Essexiella fimbriata (Essex, 1928) is typified mainly by a wide, umbrella-shape scolex with a metascolex formed by numerous folds of tissue, anteriorly directed suckers without sphincters, vitellarium bent inwards posteriorly, 'flower-shaped' uterus (with anterior, lateral and posterior diverticula), and a conspicuously pre-equatorial genital atrium. Verified re...
Source: The Journal of Parasitology - April 6, 2020 Category: Parasitology Authors: Scholz T, Barcak D, Waeschenbach A, McAllister CT, Choudhury A Tags: J Parasitol Source Type: research
Morphological and Molecular Evidence for a New Rhabdochonid Species (Nematoda: Rhabdochonidae) Parasitizing Profundulus oaxacae (Profundulidae) in the State of Oaxaca, Mexico.
Abstract The genus Rhabdochona Railliet, 1916 is one of the most speciose group of nematodes, parasites of freshwater fishes, with approximately 103 species described worldwide. Twenty-two species have been recorded in the Americas, 14 of them in Mexico. In this paper we describe a new species of Rhabdochona on the basis of light and scanning electron microscopy and molecular tools. Rhabdochona adentata n. sp. was recovered from the gallbladder of the freshwater Oaxaca killifish, Profundulus oaxacae (Meek, 1902) (Profundulidae) captured in the Río Grande, State of Oaxaca, Mexico. Rhabdochona adentata n. sp....
Source: The Journal of Parasitology - March 31, 2020 Category: Parasitology Authors: Caspeta-Mandujano JM, Salinas-Ocampo JC, Calixto-Rojas M, Rubio-Godoy M, Pinacho-Pinacho CD Tags: J Parasitol Source Type: research
Parasitism in Gambusia affinis: Fitness Effects in an Incipient Matrotroph.
Abstract Gambusia affinis (western mosquitofish) serves as a host for a variety of larval and adult parasites. Gambusia affinis is also an incipient matrotroph, exhibiting adjustments in post-fertilization provisioning to some offspring within a brood using recently acquired resources. Nutrient transfer to embryos is expected to limit the loss of embryo mass during development resulting in larger offspring. Since larger offspring are more likely to survive, maternal contributions are expected to increase fitness. The presence of parasites, particularly intestinal helminths, potentially reduces body condition and r...
Source: The Journal of Parasitology - March 31, 2020 Category: Parasitology Authors: Carpenter N, Herrmann KK Tags: J Parasitol Source Type: research
D-mannose-specific Immunoglobulin M in Grass Puffer (Takifugu niphobles), a Nonhost Fish of a Monogenean Ectoparasite Heterobothrium okamotoi, Can Act as a Trigger for its Parasitism.
Abstract Heterobothrium okamotoi, a monogenean gill parasite, exhibits high host specificity for the tiger puffer, Takifugu rubripes, and it has been experimentally verified that the parasite cannot colonize either closely related species such as the grass puffer Takifugu niphobles or distantly related fish such as the red seabream Pagrus major. Previously, we demonstrated in T. rubripes that immunoglobulin M (IgM) with d-mannose affinity induced deciliation of the oncomiracidia, the first step of parasitism, indicating that the parasite utilizes the molecule as a receptor for infection. In the present study, we p...
Source: The Journal of Parasitology - March 31, 2020 Category: Parasitology Authors: Matsui S, Goto T, Tsubouchi Y, Hirakawa S, Suetake H, Miyadai T, Nakamura O, Tasumi S, Tsutsui S Tags: J Parasitol Source Type: research
Variation in Helminth Parasite Component Communities of Gambusia affinis.
Abstract In north-central Texas streams, seasonal changes in ambient temperature and rainfall result in dynamic variation in microhabitat structure, affecting the distribution and abundance of hosts. Since the complex life cycles of parasites require the presence and interaction of multiple hosts, the seasonal variations in microhabitats could influence parasite component communities within these ecosystems. Gambusia affinis (western mosquitofish) serves as a host for a variety of larval and adult parasites. Factors that affect helminth component communities in populations of mosquitofish from the Paluxy River wer...
Source: The Journal of Parasitology - March 26, 2020 Category: Parasitology Authors: Carpenter N, Herrmann KK Tags: J Parasitol Source Type: research
The lungworm, Halocercus brasiliensis (Nematoda: Pseudaliidae), from Guiana Dolphins Sotalia guianensis from Brazil with Pathological Findings.
Abstract The Guiana dolphin, Sotalia guianensis, is a small cetacean species found on the Atlantic coast of Central and South America from Honduras to Santa Catarina State, Brazil. The nematode Halocercus brasiliensis infects this cetacean, resulting in lung pathologies and death. The present study aimed to conduct a morphological and morphometric study of specimens of H. brasiliensis collected from S. guianensis from the coast of the state of Espírito Santo, Brazil. For this study, 7 dolphins were collected and examined for the presence of lung parasites. Nematodes were collected and processed for light mi...
Source: The Journal of Parasitology - March 26, 2020 Category: Parasitology Authors: de Oliveira Carvalho Demarque I, de Oliveira FCR, da Silveira LS, Barbosa LA, Ederli NB Tags: J Parasitol Source Type: research
Gaharitrema droneni n. gen., n. sp. (Digenea: Zoogonidae) from the Pudgy Cuskeel, Spectrunculus grandis (Ophidiiformes: Ophidiidae), from Deep Waters Off Oregon, with Updated Keys to Zoogonid Subfamilies and Genera.
This study documents the third family of digeneans (Zoogonidae) known to parasitize S. grandis, and it is a new host record (i.e., the first zoogonid reported from this host species). We discuss the relatively impressive presence of the Zoogonidae and their hosts within the deep sea. Specifically, of the 35 genera we recognize within this digenean family, 14 (40%) have deep-sea representatives. At least 37 species within 27 genera and 19 families within 11 orders of deep-sea fish are known to harbor zoogonids. Furthermore, of the 37 known deep-sea fish species parasitized by zoogonids, only 5 (13.5%) harbor 2 or more zoogo...
Source: The Journal of Parasitology - March 26, 2020 Category: Parasitology Authors: Blend CK, Racz GR, Gardner SL Tags: J Parasitol Source Type: research
Leon F. Duobinis-Gray.
PMID: 32203979 [PubMed - as supplied by publisher] (Source: The Journal of Parasitology)
Source: The Journal of Parasitology - March 24, 2020 Category: Parasitology Authors: Faulkner CT Tags: J Parasitol Source Type: research
Haemosporidian Parasites of Chilean Ducks: The Importance of Biogeography and Nonpasserine Hosts.
D, Tkach VV Abstract Biogeography is known to have shaped the diversity and evolutionary history of avian haemosporidian parasites across the Neotropics. However, a paucity of information exists for the temperate Neotropics and especially from nonpasserine hosts. To understand the effect of biogeography in the temperate Neotropics on haemosporidians of nonpasserine hosts we screened ducks (Anseriformes) from central Chile for the presence of these parasites. Forty-two individuals of 4 duck species (Anas flavirostris, Anas georgica, Mareca sibilatrix, Spatula cyanoptera cyanoptera) were collected and assessed for h...
Source: The Journal of Parasitology - March 13, 2020 Category: Parasitology Authors: Bell JA, González-Acuña D, Tkach VV Tags: J Parasitol Source Type: research
A New Species of Cryptocotyle (Digenea: Heterophyidae) Infecting Kelp Gull and a Galaxiid Fish in Patagonian Freshwater Environments: Morphological and Molecular Analyses.
Abstract Adults of a species of Cryptocotyle were found infecting the intestine of the kelp gull, Larus dominicanus Lichtenstein, 1823, and metacercariae were found in the fins and muscle of the galaxiid fish, Galaxias platei Steindachner, 1898 (local name "puyen grande"), in Nahuel Huapi National Park (Patagonia). Morphometrics and genetic markers of mitochondrial cytochrome oxidase (COI) and ribosomal internal transcribed spacer 1 (ITS1) confirmed that adults and metacercariae were conspecific and represent a new species, Cryptocotyle dominicana n. sp. The only congener known from South America (Crypto...
Source: The Journal of Parasitology - March 13, 2020 Category: Parasitology Authors: Casalins LM, Arbetman MP, Viozzi GP, Flores VR Tags: J Parasitol Source Type: research
A New Species of Sucking Louse from the Mandrill from Gabon with a Review of Host Associations and Geographical Distributions, and Identification Keys to Members of the Genus pedicinus (Phthiraptera: Anoplura: Pedicinidae).
Abstract Members of the sucking louse genus Pedicinus are ectoparasites of cercopithecid primates in Africa, Asia, and Gibraltar. Pedicinus gabonensis n. sp. is described on the basis of adult male and female specimens collected from the mandrill (Mandrillus sphinx) in Gabon. The new species is compared morphologically with other members of the genus Pedicinus, and a nuclear elongation factor 1 alpha gene sequence is provided. Host associations and geographical distributions of the 18 previously recognized species of the genus and of P. gabonensis n. sp. are reviewed. Updated identification keys are provided for m...
Source: The Journal of Parasitology - March 13, 2020 Category: Parasitology Authors: Durden LA, Kessler SE, Boundenga L, Ngoubangoye B, Tsoumbou TA, Moussadji-Kinga CI, Halbwax M, Setchell JM, Nichols J, Greiman SE Tags: J Parasitol Source Type: research
In Memoriam: Dr. Gerald Wisler Esch.
Authors: PMID: 32109189 [PubMed - as supplied by publisher] (Source: The Journal of Parasitology)
Source: The Journal of Parasitology - January 31, 2020 Category: Parasitology Tags: J Parasitol Source Type: research
High Prevalence of the Copepod Salmincola californiensis in Steelhead Trout in Lake Ontario Following its Recent Invasion.
Abstract Salmincola californiensis (Dana, 1853) (Subclass Copepoda: Family Lernaeopodidae) is known to parasitize salmonids of the genus Oncorhynchus including Oncorhynchus mykiss (rainbow trout), Oncorhynchus tshawytscha (chinook salmon), and Oncorhynchus kisutch (coho salmon). These 3 salmonids have been introduced to the Great Lakes intermittently since the mid-1800s. As we demonstrate here, the introduction of these salmonids to the Great Lakes was followed, at some point, by the introduction of their parasitic gill copepod, S. californiensis. Given anecdotal accounts of S. californiensis in introduced salmoni...
Source: The Journal of Parasitology - January 31, 2020 Category: Parasitology Authors: Mullin BR, Reyda FB Tags: J Parasitol Source Type: research
Regional Distribution of a Brain-Encysting Parasite Provides Insight on Parasite-Induced Host Behavioral Manipulation.
In this study, we developed a method for repeated experimental infections. In addition, we measured brain-region specific density using a novel methodology to locate and quantify parasite infection. We show that E. californiensis cysts are non-randomly distributed on the fish brain, aggregating on the diencephalon/mesencephalon region (a brain area involved in controlling reproduction and stress coping) and the rhombencephalon (an area involved in controlling locomotion and basal physiology). Determining causal mechanisms behind this pattern of localization will guide future research examining the neurological mechanisms o...
Source: The Journal of Parasitology - January 31, 2020 Category: Parasitology Authors: Helland-Riise SH, Nadler LE, Vindas MA, Bengston E, Turner AV, Johansen IB, Weinersmith KL, Hechinger RF, Øverli Ø Tags: J Parasitol Source Type: research
Ancient Echinostome Eggs Discovered in Archaeological Strata Specimens from a Baekje Capital Ruins of South Korea.
Abstract Echinostomiasis is prevalent in southeastern as well as northeastern Asian countries. This endemicity notwithstanding, no echinostome egg has as yet been reported by paleoparasitological studies conducted in Asian countries. Recently we analyzed geological-strata specimens retrieved from the ancient capital city of the Baekje Kingdom to uncover clues to the possible prevalence of echinostomiasis among contemporaneous populations of Korea. By means of archaeoparasitological technique, we found ancient Isthmiophora hortensis eggs in the specimens, thus revealing for the first time that ancient Korean people...
Source: The Journal of Parasitology - January 31, 2020 Category: Parasitology Authors: Seo M, Shim SY, Lee HY, Kim Y, Hong JH, Kim JE, Chai JY, Shin DH Tags: J Parasitol Source Type: research
Atrophic Proventriculitis Associated with Gravid Females of Tetrameres sp. (Nematoda: Tetrameridae) in the Magellanic Penguin (Spheniscus magellanicus) on the Coast of Brazil.
This study broadens knowledge on parasites associated with these hosts and the real impact of this association. PMID: 32083984 [PubMed - as supplied by publisher] (Source: The Journal of Parasitology)
Source: The Journal of Parasitology - January 31, 2020 Category: Parasitology Authors: Werneck MR, Jerdy H, Ribeiro RB, Bianchi M, Maciel LLF, de Aquino Almeida JC, Baldassin P, Gallo H, Carvalho ECQ Tags: J Parasitol Source Type: research
A New Species of Triumphalisnema (Nematoda: Coronostomatoidea) Parasite of Proculejus hirtus (Coleoptera: Passalidae) from Mexico, and the Position of the Family in the Oxyuridomorpha.
de;as SA, Mata-López R Abstract A new species of the nematode Triumphalisnema Kloss, 1962 (Oxyuridomorpha), is described from the wood beetle Proculejus hirtus Truqui from the mountain mesophilic forest in Hidalgo State, Mexico. Triumphalisnema zuuei n. sp. is distinguished from the other 4 congeners species by the presence of an expanded cervical ring, well-developed lateral alae, an obtuse cauda with a short and bifurcated caudal appendage, series of cuticular folds at ventral and dorsal body surface from excretory pore level to anal region, and ellipsoidal eggs ornamented with numerous small mushroom-lik...
Source: The Journal of Parasitology - January 31, 2020 Category: Parasitology Authors: Garduño-Montes de Oca EU, Vega-Badillo V, López-Caballero J, Ramírez-Cañas SA, Mata-López R Tags: J Parasitol Source Type: research
Is Allopreening a Stimulus-Driven Defense Against Ectoparasites?
Abstract Allopreening occurs when 1 bird preens another bird. The behavior is normally directed at the head and neck of the recipient, i.e., regions that the bird cannot self-preen. Studies of penguins, pigeons, and other groups of birds suggest that allopreening plays a role in the control of ectoparasites, such as ticks and feather lice. However, it is not known whether allopreening increases in response to increases in parasite load, or whether it is a programmed response that occurs independently of parasite load. We conducted a laboratory experiment using wild-caught rock pigeons (Columba livia) to test the r...
Source: The Journal of Parasitology - January 31, 2020 Category: Parasitology Authors: Goodman GB, Conner SA, Bush SE, Clayton DH Tags: J Parasitol Source Type: research