Epidemiology and optimal foraging: modelling the ideal free distribution of insect vectors.

abstract：:In the present study, a recombinant aminopeptidase P (rTgAPP) from Toxoplasma gondii was expressed in Escherichia coli to evaluate its enzyme parameters. The rTgAPP showed strong activity against a synthetic substrate for aminopeptidase P at pH 8·0 with a K m value of 0·255 µ m and a k cat value of 35·6 s-1. The overa...

journal_title：Parasitology

authors： Yang M,Zheng J,Jia H,Song M

更新日期：2016-09-01 00:00:00

abstract：:Laboratory experiments indicated that the active life-span of the cercariae of Cryptocotyle lingua was temperature-dependent. An increase in water temperature and population age both correlated with a tendency for the organisms to become decaudate. The larvae were strongly photoresponsive to lateral light but with tim...

journal_title：Parasitology

authors： Rea JG,Irwin SW

更新日期：1992-08-01 00:00:00

abstract：:The effects of a parasitic infection with the nematode Nippostrongylus brasiliensis on the degradation rates of cytoplasmic tRNA, rRNA and mRNA in rats have been investigated by measuring the renal excretion rates of the modified RNA catabolites N6-threoninocarbonyladenosine, pseudouridine and 7-methylguanine. Between...

journal_title：Parasitology

authors： Topp H,Duden R,Stephan U,Schöch G

更新日期：1998-02-01 00:00:00

abstract：:Fourth-stage larvae of Ascaris suum, recovered from piglets at 11-22 days post-infection (p.i.), were examined by light microscopy for changes in the somatic musculature. During this time the estimated total number of muscle cells in the body increases from approximately 600 to 21 000 cells. This non-eutelic developme...

journal_title：Parasitology

authors： O'Grady RT

更新日期：1984-02-01 00:00:00

abstract：:In recent years, through a national programme for schistosomiasis control, this infection has been eliminated from Iran. The aim of this study was to report the process of significant decrease of urogenital schistosomiasis in southwestern Iran. During national programme surveillance for urogenital schistosomiasis cont...

journal_title：Parasitology

authors： Khademvatan S,Salmanzadeh S,Foroutan-Rad M,Ghomeshi M

更新日期：2016-09-01 00:00:00

abstract：:A guinea-pig immunoglobulin-G linked agarose column was used to detect the immunoglobulin-G binding proteins (IGBP) in the ixodid ticks, Rhipicephalus appendiculatus, Amblyomma variegatum and Ixodes hexagonus. IGBPs were found in salivary gland extract (SGE) of the unfed ticks of all 3 species. The sizes of the IGBPs,...

journal_title：Parasitology

authors： Wang H,Nuttall PA

更新日期：1995-08-01 00:00:00

abstract：:Invasive parasites can spill over to new hosts in invaded ecosystems with often unpredictable trophic relationships in the newly arising parasite-host interactions. In European seas, the intestinal copepod Mytilicola orientalis was co-introduced with Pacific oysters (Magallana gigas) and spilled over to native blue mu...

journal_title：Parasitology

authors： Goedknegt MA,Shoesmith D,Jung AS,Luttikhuizen PC,van der Meer J,Philippart CJM,van der Veer HW,Thieltges DW

更新日期：2018-05-01 00:00:00

abstract：:Toxoplasma gondii is an obligate intracellular protozoan parasite. The objective of the present study was to examine the behaviour of Toxoplasma gondii RH Ankara strain tachyzoites in a cell culture environment. The study represents the first step in determining whether T. gondii RH Ankara strain tachyzoites, grown in...

journal_title：Parasitology

authors： Döskaya M,Degirmenci A,Ciçek C,Ak M,Korkmaz M,Gürüz Y,Uner A

更新日期：2006-03-01 00:00:00

abstract：:Plants containing condensed tannins (CT) may have potential to control gastrointestinal nematodes (GIN) of cattle. The aim was to investigate the anthelmintic activities of four flavan-3-ols, two galloyl derivatives and 14 purified CT fractions, and to define which structural features of CT determine the anti-parasiti...

journal_title：Parasitology

authors： Desrues O,Fryganas C,Ropiak HM,Mueller-Harvey I,Enemark HL,Thamsborg SM

更新日期：2016-04-01 00:00:00

abstract：:The behaviour and development of Elasmosoma sp., near pergandei Ashm. (Neoneurinae: Braconidae: Hymenoptera), a parasite of the ant, Formica obscuriventris clivia Creighton, was studied in a coastal sand dune habitat in central Oregon over a 2-year period. Female wasps oviposited into the abdomen of major worker ants ...

journal_title：Parasitology

authors： Poinar G Jr

更新日期：2004-05-01 00:00:00

abstract：:Eimerian oocysts were found in 98% of 422 faeces samples from goats in SE England. It was found that 74% of the samples contained thousands or tens of thousands of oocysts/g. Kids less than 1 year old had higher oocyst counts than yearling or adult goats. Nine species of Eimeria were identified, and 65% of the samples...

journal_title：Parasitology

authors： Norton CC

更新日期：1986-04-01 00:00:00

abstract：:A one-year study of gastro-intestinal parasitism in a free-ranging population of maras at Whipsnade Wild Animal Park, UK, revealed a strong relationship between membership of social units and both intensity and prevalence of infection. The mara, a hystricomorph rodent from southern Argentina, has a social organization...

journal_title：Parasitology

authors： Porteous IS,Pankhurst SJ

更新日期：1998-03-01 00:00:00

abstract：:Here, the validity of the assumption of concerted evolution of ribosomal regions in larval and adult Cooperia oncophora was assessed. In each of 4 individuals of this parasitic nematode, at least 78% of the sequences comprised different ITS variants. This implies that concerted evolution is not acting, which is corrob...

journal_title：Parasitology

authors： Mes TH,Cornelissen AW

更新日期：2004-08-01 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

authors： Schmatz DM

更新日期：1997-01-01 00:00:00

abstract：:Ultrastructural investigations (SEM, TEM) combined with lectin-binding analysis, have revealed concurrent modifications in tegumentary structure and surface glycoconjugates during the establishment and differentiation of Echinococcus multilocularis metacestodes in jirds. The laminated layer, which is amorphous and ric...

journal_title：Parasitology

authors： Leducq R,Gabrion C

更新日期：1992-02-01 00:00:00

abstract：:The sex ratio of adult worms has been observed biased towards males in Schistosoma mansoni under natural conditions. The origin of this bias is unknown. This paper determines whether males are more infective than females under controlled experimental bisexual conditions, and hence if the sex ratio is male-biased as a ...

journal_title：Parasitology

authors： Boissier J,Moné H

更新日期：2000-10-01 00:00:00

abstract：:Heparin-binding proteins (HBPs) play a key role in Trypanosoma cruzi-host cell interactions. HBPs recognize heparan sulfate (HS) at the host cell surface and are able to induce the cytoadherence and invasion of this parasite. Herein, we analysed the biochemical properties of the HBPs and also evaluated the expression ...

journal_title：Parasitology

authors： Oliveira FO Jr,Alves CR,Silva FS,Côrtes LM,Toma L,Bouças RI,Aguilar T,Nader HB,Pereira MC

更新日期：2013-02-01 00:00:00

abstract：:Entomopathogenic nematode infective juveniles are likely to encounter both uninfected and infected insects and host quality depends on the stage of the infection. We hypothesized that nematode response to infected hosts will change over the course of an infection. Here, we tested this hypothesis by focusing on the inf...

journal_title：Parasitology

authors： Ramos-Rodríguez O,Campbell JF,Christen JM,Shapiro-Ilan DI,Lewis EE,Ramaswamy SB

更新日期：2007-05-01 00:00:00

abstract：:The genomes of more than 20 helminths have now been sequenced. Here we perform a meta-analysis of all sequenced genomes of nematodes and Platyhelminthes, and attempt to address the question of what are the defining characteristics of helminth genomes. We find that parasitic worms lack systems for surface antigenic var...

journal_title：Parasitology

authors： Zarowiecki M,Berriman M

更新日期：2015-02-01 00:00:00

abstract：:A method has been devised to show that malaria parasites can be detected serologically in infected blood with a high degree of sensitivity. Using a murine malaria model, parasites were demonstrated in a solid-phase radio-immunoassay which measured antibody-binding inhibition. Lysed red blood cells (r.b.c.) were incuba...

journal_title：Parasitology

authors： Mackey L,Perrin L,Leemans E,Lambert PH

更新日期：1980-02-01 00:00:00

abstract：:A mathematical model of the transmission dynamics of Cowdria ruminantium by the ixodid tick Amblyomma hebraeum in the bovine host is developed and used to investigate the epidemiology of heartwater across a range of vector challenge. The processes described are supported by empirical data. The pattern of outcome measu...

journal_title：Parasitology

authors： O'Callaghan CJ,Medley GF,Peter TF,Perry BD

更新日期：1998-07-01 00:00:00

abstract：:Trophically transmitted parasites must trade-off own growth on one hand and energy drain from the intermediate host on the other hand, since killing the host before transmission to the next host is a dead end for both parasites and hosts. This challenge becomes especially intriguing when multiple parasites find themse...

journal_title：Parasitology

authors： Nordeide JT,Matos F

更新日期：2016-09-01 00:00:00

abstract：:Despite the great interest to quantify the structure of host-parasite interaction networks, the real influence of some factors such as taxonomy, host body size and ecological opportunity remains poorly understood. In this paper, we investigate the general patterns of organization and structure of interactions in two a...

journal_title：Parasitology

authors： D'Bastiani E,Campião KM,Boeger WA,Araújo SBL

更新日期：2020-11-01 00:00:00

abstract：:Chemotactic responses of Strongyloides stercoralis infective larvae (L3) to sodium chloride (NaCl) were investigated by recording larval tracks on a saline gradient in agarose. On agarose, larvae migrated randomly, whereas when placed at 0.01 m NaCl larvae moved to approximately 1.1 m NaCl where they turned, headed do...

journal_title：Parasitology

authors： Forbes WM,Ashton FT,Boston R,Schad GA

更新日期：2003-08-01 00:00:00

abstract：:In situations where malaria eradication is not an option in the foreseeable future the emphasis must be on the control of morbidity and mortality due to malaria. Under such circumstances drawing a distinction between malarial parasitization and malarial disease may be important for workers in both field and laboratory...

journal_title：Parasitology

authors： Marsh K

更新日期：1992-01-01 00:00:00

abstract：:West-central China is an important endemic focus of both alveolar and cystic echinococcosis where several species of intermediate host are commonly infected with Echinococcus granulosus and E. multilocularis . Isolates of E. granulosus were collected from humans and other animals from different geographical areas of Q...

journal_title：Parasitology

authors： Yang YR,Rosenzvit MC,Zhang LH,Zhang JZ,McManus DP

更新日期：2005-10-01 00:00:00

abstract：:The worldwide economic impact of Neospora caninum infection has caused the development of effective vaccines to become one of the main goals in the field of neosporosis research. In this study, the protection conferred by antigens from inactivated whole tachyzoites (TZ) and a tachyzoite-bradyzoite mixture (TZ-BZ) of N...

journal_title：Parasitology

authors： Rojo-Montejo S,Collantes-Fernández E,Rodríguez-Marcos S,Pérez-Zaballos F,López-Pérez I,Prenafeta A,Ortega-Mora LM

更新日期：2011-09-01 00:00:00

abstract：:The host recognition and invasion process of Myxobolus cerebralis actinospores (triactinomyxon, TAM) was studied on a genetic level. A small-scale in vitro assay was developed to activate a large number of TAMs simultaneously, and to monitor the host invasion in the absence of live fish. The transcriptomes of non-acti...

journal_title：Parasitology

authors： Eszterbauer E,Kallert DM,Grabner D,El-Matbouli M

更新日期：2009-04-01 00:00:00

abstract：:In an interconnected world, the international pet trade on wild animals is becoming increasingly important. As a consequence, non-native parasite species are introduced, which affect the health of wildlife and contribute to the loss of biodiversity. Because the investigation of parasite diversity within vulnerable hos...

journal_title：Parasitology

authors： Héritier L,Verneau O,Breuil G,Meistertzheim AL

更新日期：2017-04-01 00:00:00

abstract：:Kudoid parasites are significant pathogens of marine fish. In the past, specific identification has been difficult due to a paucity of detailed morphological and biological information provided in the original description of some species. However, the introduction of DNA analysis has dramatically improved diagnosis. F...

journal_title：Parasitology

authors： Burger MA,Adlard RD

更新日期：2010-04-01 00:00:00