Abstract:
:Host-parasite interactions are shaped by the co-evolutionary arms race of parasite virulence, transmission success as well as host resistance and recovery. The virulence and fitness of parasites may depend on host condition, which is mediated, for instance, by host energy constraints. Here, we investigated to what extent stress imposed by predation threat and environmental pollutants influences host-parasite interactions. We challenged the crustacean host Daphnia magna with the sterilizing bacterial endoparasite Pasteuria ramosa and simultaneously exposed the host to fish kairomones, the pesticide carbaryl or both stressors. While parasite virulence, measured as impact on host mortality and sterilization, increased markedly after short-term pesticide exposure, it was not influenced by predation threat. Parasite fitness, measured in terms of produced transmission stages, decreased both in fish and pesticide treatments. This effect was much stronger under predation threat than carbaryl exposure, and was attributable to reduced somatic growth of the host, presumably resulting in fewer resources for parasite development. While the indirect impact of both stressors on spore loads provides evidence for host condition-dependent parasite fitness, the finding of increased virulence only under carbaryl exposure indicates a stronger physiological impact of the neurotoxic chemical compared with the effect of a non-toxic fish kairomone.
journal_name
Parasitologyjournal_title
Parasitologyauthors
Coors A,De Meester Ldoi
10.1017/S0031182010000995subject
Has Abstractpub_date
2011-01-01 00:00:00pages
122-31issue
1eissn
0031-1820issn
1469-8161pii
S0031182010000995journal_volume
138pub_type
杂志文章相关文献
PARASITOLOGY文献大全abstract::Bloodstream forms of Trypanosoma congolense (2 clones: ILNat3.1 and IL3000, and 4 stocks: IL2079, IL2466, IL3266 and CP-81) were continuously cultivated in vitro at 34-36 degrees C in the absence of feeder cell layers, using HMI-93 medium which was modified from Iscove's modified Dulbecco's MEM (Flow Laboratories, Irv...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000062533
更新日期:1991-04-01 00:00:00
abstract::Understanding the origin of invasive parasites and ecological transmission barriers on the distribution of mosquito-borne pathogens is enriched by molecular phylogenetic approaches now that large databases are becoming available. Here we assess the biogeographical relationships among haemosporidian blood parasites and...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182011001491
更新日期:2011-12-01 00:00:00
abstract::Embryonic stages of various Onchocerca species have been used to stimulate resistance in CBA mice to challenge injections with the microfilariae of Onchocerca lienalis. Comparable levels of resistance to challenge (29-37% reductions) were conferred by living, freeze-killed, or sonicated organisms administered with Fre...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000055839
更新日期:1987-06-01 00:00:00
abstract::Early in the history of schistosomiasis research, children under 5 years of age were known to be infected. Although this problem was recognized over 100 years ago, insufficient action has been taken to address this issue. Under current policy, such infected children only receive their first antiparasitic treatment (pr...
journal_title:Parasitology
pub_type: 历史文章,杂志文章,评审
doi:10.1017/S0031182017000014
更新日期:2017-10-01 00:00:00
abstract::Protective immunity against larval Taenia crassiceps has been shown to rely on T cells; however, the roles of the specific subsets of T cells during infection are not known. To investigate a possible role for gamma delta T cells, this study investigated larval infection in delta-chain knock-out C57BL/6 (deltaKO) and w...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182099004771
更新日期:1999-10-01 00:00:00
abstract::A molecular approach was used to genetically characterize 5 species (Aoruroides queenslandensis, Blattophila sphaerolaima, Cordonicola gibsoni, Desmicola ornata and Leidynemella fusiformis) belonging to the superfamily Thelastomatoidea (Nematoda: Oxyurida), a group of pinworms that parasitizes terrestrial arthropods. ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182006009978
更新日期:2006-07-01 00:00:00
abstract::To assess the prevalence of Taenia solium cysticercosis in patients with neurological disorders in Slovenia, serum/cerebrospinal fluid (CSF) samples from 348 suspected patients were collected between the beginning of January 2001 and the end of December 2012 and analysed serologically for the presence of anti-T. soliu...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182013001947
更新日期:2014-04-01 00:00:00
abstract::Infections with Haemonchus contortus are a major constraint on ruminant health world-wide. Young lambs are very sensitive to Haemonchus infection. Older lambs and sheep acquire immunity after a continuous or seasonal exposure to the parasite. The mechanisms underlying immunity are still not completely understood. Anti...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s003118209900579x
更新日期:2000-01-01 00:00:00
abstract::Hymenolepis microstoma from secondary infections in mice were found to grow initially more slowly than H. microstoma from primary infections. Eventually a similar rate of growth was attained by both kinds of worm. After transplantation, young worms (less than or equal to 4 days old) grew more slowly in previously infe...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000062387
更新日期:1977-10-01 00:00:00
abstract::Cryptosporidium parvum is composed of multiple subtypes, which appear to be zoonotic or anthroponotic. Therefore, in order to understand the molecular epidemiology of this species and to control the zoonotic transmission, it is essential to identify the isolates at the subtype level. In the present study, 60.2% of 103...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182006001508
更新日期:2007-03-01 00:00:00
abstract::A statistical method that analyses correlation structures in families to delineate the contribution of genetic, household and environmental factors on clustering of infection, has been applied to data collected in an area endemic for brugian filariasis in South Sulawesi, Indonesia. Infection was assessed both by micro...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003004487
更新日期:2004-03-01 00:00:00
abstract::A metabolic pathway known as the mannitol cycle has been identified in Eimerian parasites. The pathway is a shunt off of the glycolytic pathway at fructose-6-phosphate (F6P). Two enzymes convert F6P to mannitol and two other enzymes are responsible for converting mannitol back to F6P when it is utilized. Although the ...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:
更新日期:1997-01-01 00:00:00
abstract::Human strongyloidiasis is a serious disease mostly attributable to Strongyloides stercoralis and to a lesser extent Strongyloides fuelleborni, a parasite mainly of non-human primates. The role of animals as reservoirs of human-infecting Strongyloides is ill-defined, and whether dogs are a source of human infection is ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182020000979
更新日期:2020-09-01 00:00:00
abstract::Blastocystis spp. is the most frequent infectious unicellular, luminal parasite in all species of animals and humans. It has been linked to diarrhoea and irritable bowel syndrome. Saccharomyces boulardii (Sb) is a widely used probiotic that previously showed efficacy against several intestinal pathogens. The aim of th...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182019000696
更新日期:2019-10-01 00:00:00
abstract::The in vitro effects of 4 arylimidamides (DB811, DB786, DB750 and DB766) against the proliferative tachyzoite stage of the apicomplexan parasite Besnoitia besnoiti were investigated. These four compounds had been shown earlier to exhibit in vitro activities in the nanomolar range against the related apicomplexans Neos...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182011000114
更新日期:2011-04-01 00:00:00
abstract::We assessed the distribution of Trypanosoma cruzi Discrete Typing Units (DTUs) in domestic and peridomestic Triatoma infestans and Triatoma sordida specimens collected in a well-defined rural area in Pampa del Indio, northeastern Argentina. Microscopically-positive bugs were randomly selected with a multi-level sampli...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182012000856
更新日期:2012-10-01 00:00:00
abstract::We have cloned a cDNA encoding a novel antigen from a Sarcoptes scabiei (Acari) cDNA library by immunoscreening with sera from S. scabiei-infected dogs. The antigen is encoded by a 2,157 bp mRNA with a predicted open reading frame of 719 amino acids (molecular weight 79 kDa). Our sequence analysis identified the prese...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182005008747
更新日期:2006-01-01 00:00:00
abstract::Monensin (Mon) is an anticoccidial polyether ionophore widely used to control coccidiosis. The extensive use of polyether ionophores on poultry farms resulted in widespread resistance, but the underlying resistance mechanisms are unknown in detail. For analysing the mode of action by which resistance against polyether...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182017001512
更新日期:2018-03-01 00:00:00
abstract::There has been an enormous growth in the development of biotechnological applications, where advances in the techniques of microelectronic fabrication and the technologies of miniaturization and integration in semiconductor industries are being applied to the production of Laboratory-on-a-Chip devices. The aim of this...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182099004126
更新日期:1998-01-01 00:00:00
abstract::Pasteuria penetrans is a Gram-positive endospore-producing bacterium that is a parasite of root-knot nematodes. Attachment of endospores to the cuticle of the nematode is the first stage in the infection process. Western blot analysis with monoclonal and polyclonal antibodies that recognize the 30 kDa heparin-binding ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182001008411
更新日期:2001-09-01 00:00:00
abstract::Diseases caused by viruses are a constant and major problem for livestock production world wide. The diseases range from highly contagious acute forms with high mortality, to chronic disabling diseases with an insidious effect on production. Such diseases cannot be regarded as static in nature due to the highly mutabl...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182099004199
更新日期:1998-01-01 00:00:00
abstract::While purine transport has been widely studied in protozoa, almost nothing is known about their capacity to salvage pyrimidines. Here, we report a Leishmania major transporter with high affinity for uracil (Km=0.32+/-0.07 microM) which we designated LmU1. This transporter displayed a high degree of specificity, as it ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004006626
更新日期:2005-03-01 00:00:00
abstract::Patterns of genetic subdivision in parasite populations can provide important insights into transmission processes and complement information obtained using traditional epidemiological techniques. We describe mitochondrial sequence variation in 265 Ascaris collected from 62 individual hosts (humans and pigs) from 35 h...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200006399x
更新日期:1995-02-01 00:00:00
abstract::The first rigorous proof applicable to the migration pathway of an infective juvenile macroparasite inside its host is presented. Third-stage larvae of a homogonic strain of Strongyloides ratti applied in exact doses of less than 20 to the skin of the flank of young rats were recovered 16-40 h later in the naso-fronta...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000080185
更新日期:1988-06-01 00:00:00
abstract::Myxozoans have been successfully used as tags for fish stock identification around the world. However, few studies using myxozoan tags have been carried out in the Southern Atlantic, a region with complex oceanography that constitutes a potentially suitable scenario for testing the utility of myxozoans as indicators. ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182016000226
更新日期:2016-05-01 00:00:00
abstract::Asparaginyl proteinases (or legumains) are a recently identified, novel class of cysteine proteinase which specifically hydrolyse peptide bonds after asparagine residues. Legumains have been implicated in the activation of cysteine proteases, particularly cathepsin B-like proteinases which are thought to help degrade ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182006000229
更新日期:2006-08-01 00:00:00
abstract::Ticks have numerous natural enemies, but only a few species have been evaluated as tick biocontrol agents (BCAs). Some laboratory results suggest that several bacteria are pathogenic to ticks, but their mode of action and their potential value as biocontrol agents remain to be determined. The most promising entomopath...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182004005219
更新日期:2004-01-01 00:00:00
abstract::Planning of the control of Plasmodium falciparum malaria leads to a need for models of malaria epidemiology that provide realistic quantitative prediction of likely epidemiological outcomes of a wide range of control strategies. Predictions of the effects of control often ignore medium- and long-term dynamics. The com...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182008000371
更新日期:2008-11-01 00:00:00
abstract:SUMMARY:The spermatozoa of ticks are anomalous in many respects: they are very large, cytoplasm-rich cells which lack a flagellum but move with a peculiar gliding motility. Their metamorphosis after deposition in the female has been well documented, but many of the subsequent events in the career of the spermatozoa are...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182009005630
更新日期:2009-04-01 00:00:00
abstract::Seroprevalence data illustrate that human exposure to Toxocara is frequent. Environmental contamination with Toxocara spp. eggs is assumed to be the best indicator of human exposure, but increased risk of exposure has also been associated with many other factors. Reported associations are inconsistent, however, and th...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182013000310
更新日期:2013-07-01 00:00:00