Abstract:
:Experimental infections of Galba truncatula with Fasciola gigantica or F. hepatica were carried out under laboratory conditions (20 degrees C) to determine the characteristics of rediae of both species via their morphometry and to find reliable measurements that might be efficiently used to discriminate between the rediae of both species of Fasciola. These results were compared to those of another snail: Radix natalensis, infected with either F. gigantica or F. hepatica under the same protocol. At day 28 post-exposure, abortive infections with F. hepatica were found in a group of R. natalensis. By contrast, live rediae were observed in the other three groups. The group of infected snails and the redial category significantly influenced the mean values of the seven measurements studied and those of three indices. Using the PSLD Fisher test, it was found that the index, distance from the anterior end of the body to the collar/length of the body, was an efficient means of distinguishing the rediae of F. hepatica from those of F. gigantica [second-appearing mother rediae (R1b) of the first generation, 0.14 instead of 0.22; daughter rediae (R2a) produced by the first mother rediae, 0.19 instead of 0.24]. Another index, distance from the anterior end of the body to the collar/diameter of the collar, could also be used to discriminate between rediae (R1b, 0.80 for F. hepatica instead of 1.09 for F. gigantica; R2a, 0.90 instead of 1.26, respectively). Compared to measurements recorded for the rediae of F. hepatica, rediae of F. gigantica can be characterized by the following measurements: the diameter of the pharyngeal lumen and the distance from the anterior end of the body to the collar for larvae developed in R. natalensis, and the length of the body and the distance from the posterior end of the body to lateral projections for those found in G. truncatula. The species of snail host and, consequently, its growth, as well as the species of Fasciola, had a significant influence on the morphometric characters of the redial stage.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Dar Y,Vignoles P,Dreyfuss G,Rondelaud Ddoi
10.1007/s00436-003-0966-7subject
Has Abstractpub_date
2003-11-01 00:00:00pages
369-73issue
5eissn
0932-0113issn
1432-1955journal_volume
91pub_type
杂志文章abstract::Investigations by scanning and transmission electron microscopy and freeze-etching revealed that eyes of adult Rhipicephalus evertsi mimeticus consist of a lens and photoreceptor cells, which are separated by an acellular layer and the hypodermis. The lens contains numerous pore channels, which open beneath the epicut...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00933552
更新日期:1990-01-01 00:00:00
abstract::Angiostrongylus costaricensis can infect several mollusks, and its migration route in intermediate hosts has been studied only in Sarasinula marginata. To verify the susceptibility of Omalonyx sp. as an intermediate host of A. costaricensis and to analyze the nematode migration route, individuals were infected with st...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-008-1138-6
更新日期:2008-11-01 00:00:00
abstract::An epidemiological and molecular survey was conducted to investigate the role of cattle in the transmission chain of cystic echinococcosis (CE) in the Campania region of southern Italy. Out of a total of 434 cattle examined for CE, 45 (10.4%) were found infected. A total of 363 cysts were collected from the infected a...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-008-0948-x
更新日期:2008-06-01 00:00:00
abstract::A multicomponent DNA vaccine, encoding Toxoplasma gondii GRA1 and SAG1, was constructed and tested for its ability to confer protection. BALB/c mice were challenged with tachyzoites of the virulent T. gondii RH strain at 4 weeks following the last immunization, and immune responses and survival times were observed. Th...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-012-3047-y
更新日期:2012-11-01 00:00:00
abstract::Disseminated visceral coccidiosis (DVC) is a widely distributed intestinal and extraintestinal disease of cranes caused by eimeriid coccidia and has lethal pathogenicity to several crane species. Here, feces of 164 black-necked cranes collected in Dashanbao Black-necked Crane National Nature Reserve, China, were exami...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-018-5765-2
更新日期:2018-03-01 00:00:00
abstract::Sheep infected with the triclabendazole-susceptible Cullompton isolate of Fasciola hepatica were dosed with 15 mg/kg of compound alpha at 12 weeks post-infection. Adult flukes were recovered from the bile ducts at 24, 48, and 72 h post-treatment (p.t.). Changes to the spermatogenic cells in the testis were examined by...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-009-1649-9
更新日期:2010-01-01 00:00:00
abstract::A monoclonal antibody raised against membrane proteins of Toxoplasma gondii with molecular weights of 35 and 21 kDa also reacts strongly and "specifically" with surface antigens of Pneumocystis carinii with molecular weights of 394.2 and 69 kDa when used in a direct immunofluorescence antibody test, on the one hand, a...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00930914
更新日期:1991-01-01 00:00:00
abstract::The study was performed on a male European bison (Bison bonasus bonasus L.) foetus spontaneously aborted at the fourth or fifth month of pregnancy in the Białowieża Forest. Serum samples from the foetus and mother revealed the presence of antibodies against T. gondii (S/P% = 88% and 75%, respectively). Mobile extracel...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-017-5549-0
更新日期:2017-09-01 00:00:00
abstract::Two species of Babesia were isolated from naturally infected sheep in the eastern part of Gansu province. One of the species was identified as B. ovis, while the another one seems as yet to be an unidentified Babesia species. The latter could be transmitted transovarially by Haemaphysalis longicornis. It was shown tha...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-001-0563-6
更新日期:2002-05-01 00:00:00
abstract::Blastocystis sp. is a common intestinal parasite. To date, there have been sporadic and scanty studies on Blastocystis sp. carried out in rural communities in Nepal. We surveyed the prevalence of Blastocystis sp. and its possible associated risk factors, and reported the predominant Blastocystis sp. subtype in two rur...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-011-2665-0
更新日期:2012-04-01 00:00:00
abstract::In life cycle of Angiostrongylus costaricensis, veronicellidae mollusks participate as the invertebrate host while rodents as the main vertebrate host. The current work shows a sequential larval development of A. costaricensis in Sarasinula marginata, individually killed and digested from day 1 to 43, post infection. ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-007-0834-y
更新日期:2008-04-01 00:00:00
abstract::Intestinal coccidiosis of rabbits induced by E. coecicola causes enormous economic losses in rabbit farms. Here, we investigate the effect of E. coecicola on the liver of the rabbit Oryctolagus cuniculus. On day 7 p.i., fecal expulsion of E. coecicola oocysts is maximal and rabbits have lost approximately 25% of their...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-011-2574-2
更新日期:2012-02-01 00:00:00
abstract::Sheared flagella from Giardia lamblia were freed from cytoskeleton fragments and other cell contaminants by centrifuging in a density gradient. The purified organelles contain many polypeptides, including a set of low-molecular-weight antigens [apparent molecular weights (MWs) = 31, 32, 34, 35 and 37 kD] in the same s...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00535140
更新日期:1988-01-01 00:00:00
abstract::The present study evaluated the distribution and viability of Toxoplasma gondii tissue cysts in the organs and Brazilian commercial cuts of experimentally infected pigs. The pigs were infected with 3 × 103 oocysts of the T. gondii isolate TgCkBr57 (Type BrII). Mouse bioassays were performed on the brain, retina, tongu...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-019-06229-6
更新日期:2019-04-01 00:00:00
abstract::In this paper, we cloned a novel full-length cDNA that encodes a Trichinella spiralis cathepsin B-like protease gene (TsCPB) using 3'-RACE PCR. The recombinant mature TsCPB protein (rTsCPB) was then expressed in an Escherichia coli expression system and purified with Ni-affinity chromatography. Real-time quantitative ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-013-3497-x
更新日期:2013-09-01 00:00:00
abstract::The essential oil of Cananga odorata flowers was evaluated for oviposition-deterrent, ovicidal, insecticidal, and repellent activities toward three mosquito species: Aedes aegypti, Anopheles dirus, and Culex quinquefasciatus. Oviposition deterrence of the oil was evaluated on gravid females using oviposition deterrenc...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4699-1
更新日期:2015-12-01 00:00:00
abstract::The hypothesis of a positive correlation between host specificity and taxonomic diversification was tested in a family of fish ectoparasites, the Diplectanidae Bychowsky 1957 (Monogenea). A comparative analysis of correlation of species richness with host specificity was performed using an adapted independent contrast...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s004360000325
更新日期:2001-03-01 00:00:00
abstract::The third larval stage (L3) of Anisakis simplex (Anisakidae) is one of the zoonotic parasitic nematodes in the musculature and visceral organs of marine fishes belonging to family Moronidae. The consumption of these high-commercial-value fish is widespread in many countries around the Mediterranean Sea including Egypt...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4500-5
更新日期:2015-08-01 00:00:00
abstract::Several polymorphic markers, including serine-rich protein genes, have been used for the genotyping of isolates from the morphologically indistinguishable protozoan parasites Entamoeba histolytica, Entamoeba dispar, and Entamoeba nuttalli. Genotypes of tRNA-linked short tandem repeats (STRs) are highly polymorphic, bu...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-013-3664-0
更新日期:2014-01-01 00:00:00
abstract::Ascaris lumbricoides is responsible for a highly disseminated helminth parasitic disease, ascariosis, a relevant parasitosis that responds for great financial burden on the public health system of developing countries. In this work, metabolic fingerprinting using high-resolution mass spectrometry (HRMS) was employed t...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-016-5183-2
更新日期:2016-11-01 00:00:00
abstract::A study was made to determine the prevalence of camel trypanosomosis (surra) and its associated risk factors in Borena zone, southern Ethiopia during 2013-2014. A total of 2400 blood samples were collected and examined by the buffy coat and thin blood film laboratory methods, and data were analyzed using the SPSS stat...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4845-9
更新日期:2016-03-01 00:00:00
abstract::Spermiogenesis of the pseudophyllidean tapeworm Eubothrium crassum has been described by the aid of transmission electron microscopy for the first time. Initially, early spermatids form a distal cytoplasmic protrusion, a differentiation zone containing a small electron-dense, apically oriented region. Out of this regi...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s004360100392
更新日期:2001-08-01 00:00:00
abstract::The DNA content of the developmental stages within the life cycle of Babesia divergens was measured by means of fluorescence microscopy using the DNA-specific bisbenzimide Hoechst 33258. By comparing the mean relative fluorescence intensities, the assumption of sexual reproduction in the gut of the tick vector (Ixodes...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00930815
更新日期:1990-01-01 00:00:00
abstract::Culex pipiens pallens is the mosquito vector of a number of human pathogens such as Wuchereria bancrofti, Brugia malayi, and epidemic encephalitis B virus. Female C. pipiens pallens play an important role in transmitting pathogens by sucking blood, which is essential for reproduction. In the present study, a subtracti...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-007-0506-y
更新日期:2007-08-01 00:00:00
abstract::Multiple schistosome and soil-transmitted nematode infections are frequently reported in human populations living in tropical areas of developing countries. In addition to exposure factors, the host immune response plays an important role in helminth control and morbidity in hosts with multiple infections; however, th...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4706-6
更新日期:2015-12-01 00:00:00
abstract::The hypersaline lagoons located in evaporation basins or salars (salt flats) in the Atacama Desert are extreme environments harbouring a specialised biota able to survive harsh conditions for life. The knowledge of the parasitic biodiversity of these extreme habitats is still scarce despite their functional importance...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-020-06768-3
更新日期:2020-10-01 00:00:00
abstract::The existing armament of drugs for the treatment and prevention of malaria is inadequate due to development of resistance. In addition to this due to lack of economic enticement the rate of new drug development and new drug discovery in the segment of parasitic diseases is very low as compared to the other segments. T...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-010-1789-y
更新日期:2010-05-01 00:00:00
abstract::Entamoeba histolytica infection in humans is still one of the leading causes of parasitic diseases among the developing countries, including India. It therefore becomes extremely important to characterize this parasite with the aim of preventing and controlling the amoebiasis which it causes. The present study describ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s004360000363
更新日期:2002-02-01 00:00:00
abstract::A total of 70 proven cases of neurocysticercosis from la Réunion (Indian Ocean) were studied with enzyme-linked immunoassay (ELISA) and immunoelectrotransfer blot (EITB) to detect specific antibodies in serum and cerebrospinal fluid (CSF). Absorbance levels of antibody to crude Taenia solium cyst extract as an antigen...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00931618
更新日期:1995-01-01 00:00:00
abstract::Pharmacokinetics and anthelmintic activity of topical eprinomectin in goats prevented from physical contact to others and self-grooming were studied. Sixteen approximately 7 months old male castrated German White Noble goats harbouring induced infections of gastrointestinal nematode parasites were included in the stud...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-014-4072-9
更新日期:2014-11-01 00:00:00