Parasitism and phenotypic change in colonial hosts.

abstract：:Resistance to diclazuril was induced by 10 passages of the Houghton strains of Eimeria acervulina and E. tenella in chickens given progressively greater concentrations of the drug. This resistance was, however, not complete since the drug retained some efficacy against the drug-passaged lines. Attempts to passage the ...

journal_title：Parasitology

authors： Chapman HD

更新日期：1989-10-01 00:00:00

abstract：:Parasite-host interactions mediated by cell surface proteins have been implicated as a critical step in infections caused by the microsporidian Nosema bombycis. Such cell surface proteins are considered as promising diagnostic markers and targets for drug development. However, little research has specifically addresse...

journal_title：Parasitology

authors： Zhao W,Hao Y,Wang L,Zhou Z,Li Z

更新日期：2015-06-01 00:00:00

abstract：:The group of haemosporidian parasites is of general interest to basic and applied science, since several species infect mammals, leading to malaria and associated disease symptoms. Although the great majority of haemosporidian parasites appear in bird hosts, as in the case of Leucocytozoon buteonis, there is little ge...

journal_title：Parasitology

authors： Chakarov N,Greiner JF,Hauser S,Schuetzmann D,Krüger O,Boerner M,Wıdera D

更新日期：2012-10-01 00:00:00

abstract：:Many zoonotic disease agents are transmitted between hosts by arthropod vectors, including fleas, but few empirical studies of host-vector-microparasite dynamics have investigated the relative importance of hosts and vectors. This study investigates the dynamics of 4 closely related Bartonella species and their flea v...

journal_title：Parasitology

authors： Telfer S,Begon M,Bennett M,Bown KJ,Burthe S,Lambin X,Telford G,Birtles R

更新日期：2007-03-01 00:00:00

abstract：:In recent years, a malaria infection of humans in South East Asia, originally diagnosed as a known human-infecting species, Plasmodium malariae, has been identified as a simian parasite, Plasmodium knowlesi. This species had been subject to considerable investigation in monkeys since the 1930s. With the development of...

journal_title：Parasitology

authors： Butcher GA,Mitchell GH

更新日期：2018-01-01 00:00:00

abstract：:Oesophagostomum dentatum stages were investigated for glutathione S-transferase (GST) expression at the protein and mRNA levels. GST activity was detected in all stages (infectious and parasitic stages including third- and fourth-stage larvae of different ages as well as males and females) and could be dose-dependentl...

journal_title：Parasitology

authors： Joachim A,Ruttkowski B

更新日期：2008-09-01 00:00:00

abstract：:Lactating and nulliparous outbred Swiss (CF-1 strain) mice were infected at 12-16 weeks of age with Nippostrongylus brasiliensis or Trichinella spiralis. Lysophospholipase B levels in the intestinal tissue and faecal pellets were greatly in infected lactating mice in contrast to infected nulliparous mice. Correlated w...

journal_title：Parasitology

authors： Ngwenya BZ

更新日期：1980-08-01 00:00:00

abstract：:Engorged Ixodes ricinus nymphs collected from sheep resident in an upland UK field site were significantly lighter than nymphs that engorged on previously tick-naïve sheep, indicating that site-resident sheep continually exposed to ticks acquired anti-tick resistance. The weights of engorged nymphs that fed on natural...

journal_title：Parasitology

authors： Ogden NH,Casey AN,French NP,Adams JD,Woldehiwet Z

更新日期：2002-02-01 00:00:00

abstract：:Monoclonal antibodies reacting with pellicular antigens of Toxoplasma gondii tachyzoites have been selected among hybridomas produced against this organism by immunofluorescence assay. These antigens have been further characterized by immunofluorescence on living zoites, Western immunoblotting and immunoprecipitation ...

journal_title：Parasitology

authors： Couvreur G,Sadak A,Fortier B,Dubremetz JF

更新日期：1988-08-01 00:00:00

abstract：:The relationships between populations of the Deer Mouse (Peromyscus maniculatus) and the White-footed Mouse (P. leucopus) and their respective Cuterebra parasites were examined. Population genetic structure of hosts and parasites was inferred using cytochrome oxidase mitochondrial sequences of specimens from 7 populat...

journal_title：Parasitology

authors： Noel S,Angers B,Lapointe FJ

更新日期：2005-08-01 00:00:00

abstract：:Nematophagous fungi are used in the biological control of the parasitic helminths of animals and plants. The association of ovicidal and predator nematophagous fungi may present a complementary and increased action on the biological control of helminths. Joint growth compatibility and predation tests were carried out ...

journal_title：Parasitology

authors： Vieira ÍS,Oliveira IC,Campos AK,Araújo JV

更新日期：2019-09-01 00:00:00

abstract：:Cercariae of the bird schistosome Trichobilharzia regenti and of the human schistosome Schistosoma mansoni employ proteases to invade the skin of their definitive hosts. To investigate whether a similar proteolytic mechanism is used by both species, cercarial extracts of T. regenti and S. mansoni were biochemically ch...

journal_title：Parasitology

authors： Kasný M,Mikes L,Dalton JP,Mountford AP,Horák P

更新日期：2007-10-01 00:00:00

abstract：:The global seroprevalence of latent toxoplasmosis is estimated to be higher than 30%. The presence of slowly dividing parasites in tissue cysts located mainly in immunoprivileged organs was long considered asymptomatic. Recently, many studies have shown that latent Toxoplasma infections could have serious impacts on h...

journal_title：Parasitology

authors： Flegr J,Escudero DQ

更新日期：2016-12-01 00:00:00

abstract：:Schistosoma mansoni depends for its survival on glycolysis. Two glycolytic enzymes, glyceraldehyde-3P-dehydrogenase and triose-phosphate dehydrogenase, found in both the adult and schistosomular tegument, have been reported to confer partial protection against cercarial infection. This paper describes the immunogenic ...

journal_title：Parasitology

authors： Mansour JM,McCrossan MV,Bickle QD,Mansour TE

更新日期：2000-05-01 00:00:00

abstract：:Part of Robert T. Leiper's (1881-1969) lasting legacy in medical helminthology is grounded on his pioneering work on schistosomiasis (Bilharzia). Having undertaken many expeditions to the tropics, his fascination with parasite life cycles typically allowed him to devise simple preventive measures that curtailed transm...

journal_title：Parasitology

authors： Stothard JR,Kabatereine NB,Archer J,Al-Shehri H,Tchuem-Tchuenté LA,Gyapong M,Bustinduy AL

更新日期：2017-10-01 00:00:00

abstract：:Cryptosporidia are important protozoan parasites of vertebrates, and a number of species and genotypes, with different host ranges, have been described. In this study a protocol was established for the detection and the genetic characterization of Cryptosporidium spp. isolated from various types of surface waters (riv...

journal_title：Parasitology

authors： Ward PI,Deplazes P,Regli W,Rinder H,Mathis A

更新日期：2002-04-01 00:00:00

abstract：:As more facts emerge regarding the ways in which E. multilocularis-derived molecules trigger the host immune response and modulate the host-parasite interplay, it becomes possible to envisage how the parasite can survive and proliferate in its intermediate host, while in other hosts it dies out. Through effects on cel...

journal_title：Parasitology

authors： Mejri N,Hemphill A,Gottstein B

更新日期：2010-03-01 00:00:00

abstract：:Amoebiasis, infection by the protozoan parasite Entamoeba histolytica, remains a global health problem, despite the availability of effective treatment. While improved sanitation could lead to the eradication of this disease, it is unlikely that this will occur worldwide in the foreseeable future; thus alternative mea...

journal_title：Parasitology

authors： Stanley SL Jr

更新日期：2006-01-01 00:00:00

abstract：:Epidemiological rate parameters of host generalist parasites are difficult to estimate, especially in cases where variation in parasite performance can be attributed to host species. Such cases are likely common for generalist parasites of sympatric grazing mammals. In this study, we combined data from experimental ex...

journal_title：Parasitology

authors： Beck MA,Goater CP,Colwell DD

更新日期：2015-09-01 00:00:00

abstract：:IgA and IgE activity against Teladorsagia circumcincta was investigated in a flock of Texel lambs following natural, mixed nematode infection among lambs. The distribution of IgA activity was similar to a gamma distribution whereas IgE activity was different. Box-Cox analysis demonstrated that X0.25 was a suitable tra...

journal_title：Parasitology

authors： Murphy L,Eckersall PD,Bishop SC,Pettit JJ,Huntley JF,Burchmore R,Stear MJ

更新日期：2010-07-01 00:00:00

abstract：:Recent studies of Echinococcus granulosus molecular strain typing have enabled a better understanding of the transmission cycle of cystic echinococcosis. There have been many publications in this area but there is a need for the evaluation of these tools. We have attempted to respond to this need in our study, which a...

journal_title：Parasitology

authors： Bart JM,Bardonnet K,Elfegoun MC,Dumon H,Dia L,Vuitton DA,Piarroux R

更新日期：2004-02-01 00:00:00

abstract：:In light of the low success rate of target-based genomics and HTS (High Throughput Screening) approaches in anti-infective drug discovery, in silico structure-based drug design (SBDD) is becoming increasingly prominent at the forefront of drug discovery. In silico SBDD can be used to identify novel enzyme inhibitors r...

journal_title：Parasitology

authors： Cunningham F,McPhillie MJ,Johnson AP,Fishwick CW

更新日期：2014-01-01 00:00:00

abstract：:The blackcap (Sylvia atricapilla) is a common Palearctic migratory warbler, and haemosporidian parasites are common in this species. However, genetic and phenotypic diversity of haemosporidians in warblers has been insufficiently investigated and poorly linked. We addressed this issue by combining molecular and micros...

journal_title：Parasitology

authors： Krizanauskiene A,Pérez-Tris J,Palinauskas V,Hellgren O,Bensch S,Valkiūnas G

更新日期：2010-02-01 00:00:00

abstract：:The Baltic Sea is characterized by organisms that can tolerate brackish water. Because of the Sea's history during glacial times, its flora and fauna (and also their parasites) can be traced to marine, freshwater and genuine brackish elements beside glacial relics. Snails, planktonic copepods, benthic amphipods and is...

journal_title：Parasitology

authors： Zander CD,Reimer LW

更新日期：2002-01-01 00:00:00

abstract：:Digenean parasites infecting four Cominella whelk species (C. glandiformis, C. adspersa, C. maculosa and C. virgata), which inhabit New Zealand's intertidal zone, were analysed using molecular techniques. Mitochondrial 16S and cytochrome oxidase 1 (COI) and nuclear rDNA ITS1 sequences were used to infer phylogenetic r...

journal_title：Parasitology

authors： Donald KM,Spencer HG

更新日期：2016-08-01 00:00:00

abstract：:Ivermectin treatment may induce severe adverse reactions in some individuals heavily infected with Loa loa. This hampers the implementation of mass ivermectin treatment against onchocerciasis in areas where Onchocerca volvulus and L. loa are co-endemic. In order to identify factors, including co-infections, which may ...

journal_title：Parasitology

authors： Pion SD,Clarke P,Filipe JA,Kamgno J,Gardon J,Basáñez MG,Boussinesq M

更新日期：2006-06-01 00:00:00

abstract：:Sex ratio theory posits that the adaptive proportion of male to female gametocytes of a malaria parasite within the vertebrate host depends on the degree of inbreeding within the vector. Gametocyte sex ratio could be phenotypically flexible, being altered based on the infection's clonal diversity, and thus likely inbr...

journal_title：Parasitology

authors： Osgood SM,Schall JJ

更新日期：2004-01-01 00:00:00

abstract：:The anthelmintic properties of tanniferous plants and of their secondary metabolites represent one possible alternative to chemotherapy that is currently being explored as a means of achieving sustainable control of gastrointestinal nematodes in ruminants. Previous in vivo and in vitro results suggest that tanniferous...

journal_title：Parasitology

authors： Bahuaud D,Martinez-Ortiz de Montellano C,Chauveau S,Prevot F,Torres-Acosta F,Fouraste I,Hoste H

更新日期：2006-04-01 00:00:00

abstract：:The phylogenetic relationship of 5 genera, i.e. Diplozoon Nordmann, 1832, Paradiplozoon Achmerov, 1974, Inustiatus Khotenovsky, 1978, Sindiplozoon Khotenovsky, 1981, and Eudiplozoon Khotenovsky, 1985 in the subfamily Diplozoinae Palombi, 1949 (Monogenea, Polyopisthocotylea) was inferred from rDNA ITS-2 region using ne...

journal_title：Parasitology

authors： Gao Q,X Chen M,Yao WJ,Gao Y,Song Y,Wang GT,Wang MX,Nie P

更新日期：2007-05-01 00:00:00

abstract：:The behavioural responses of Onchocerca lienalis microfilariae (mf) to tissue factors of the surrogate black fly host, Simulium vittatum, were studied using a novel in vitro bioassay. Mf accumulated towards thoracic tissues to a density 4 times higher than towards abdominal tissues, despite the larger surface area and...

journal_title：Parasitology

authors： Lehmann T,Cupp SM,Cupp WE

更新日期：1995-04-01 00:00:00