Abstract:
:A field trial was conducted to evaluate the potential of the nematode-destroying fungus Duddingtonia flagrans to control free-living stages of horse strongyles. In late Spring 2 groups of horses (yearlings) with mixed infections of strongyles were allowed to contaminate 2 equal-sized pastures. One of the groups (F) received a daily dose of D. flagrans mixed in a feed supplement, while the other (C) received a similar amount of supplement without fungus. During a 3-month contamination period strongyle egg counts in faeces and number of infective strongyle larvae harvested from faecal cultures were determined. Grass samples were collected fortnightly. After the contamination period the yearlings were removed and 2 groups of young tracer foals (TF and TC) grazed the fungus and control pastures respectively for 4 weeks, housed for another 15 weeks and then killed to determine their worm burdens. The number of larvae in cultures from group TF was significantly lower than that in TC and herbage infectivity was reduced to a very low level on the pasture grazed by horses fed fungi. The number of Strongylus vulgaris and Strongylus edentatus larvae was also significantly lowered in group TF. Cyathostome larvae recovered from the mucosa of the ventral and dorsal colon and from the caecum were significantly lowered in group TF foals. Also, the number of strongyles found in the gut contents of group TF foals were significantly reduced in the dorsal colon, but numbers of worms in the ventral colon and in the caecum were similar to those of the controls.
journal_name
Parasitologyjournal_title
Parasitologyauthors
Larsen M,Nansen P,Grøndahl C,Thamsborg SM,Grønvold J,Wolstrup J,Henriksen SA,Monrad Jdoi
10.1017/s003118200006621xsubject
Has Abstractpub_date
1996-07-01 00:00:00pages
1-6eissn
0031-1820issn
1469-8161journal_volume
113 ( Pt 1)pub_type
杂志文章相关文献
PARASITOLOGY文献大全abstract::Nematodes are amongst the most successful and abundant organisms on the planet with approximately 30 000 species described, although the actual number of species is estimated to be one million or more. Despite sharing a relatively simple and invariant body plan, there is considerable diversity within the phylum. Nemat...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/S0031182014000304
更新日期:2014-08-01 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
pub_type: 杂志文章
doi:10.1017/S0031182005007973
更新日期:2005-10-01 00:00:00
abstract::The in vivo activity of two cyclosporins, cyclosporin A (CsA) and a non-immunosuppressive derivative of dihydrocylosporin A (DHCsA-d) against three tapeworms, Hymenolepis microstoma, H. diminuta and Mesocestoides corti, has been assessed. CsA reversibly reduced the dry weight of H. microstoma in the mouse, briefly del...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000062211
更新日期:1989-04-01 00:00:00
abstract::We investigated spatial variation in the phylogenetic structure of host spectra in fleas parasitic on small mammals. Measures of phylogenetic host specificity ((phylogenetic species clustering (PSC) and phylogenetic species variability (PSV)) varied significantly more between than within flea species, but the proporti...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182013001376
更新日期:2014-02-01 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
pub_type: 杂志文章
doi:10.1017/S0031182011001156
更新日期:2011-09-01 00:00:00
abstract::SUMMARY The necessity to easily establish Histomonas meleagridis cultures has been underlined extensively by many researchers in order to gain more insights in the biology of H. meleagridis. In addition the occurrence of different protozoa in the caeca of birds impedes, however, the isolation and propagation of H. mel...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182013000723
更新日期:2013-09-01 00:00:00
abstract::Chagas infection is a major endemic disease affecting Latin American countries. The persistence of Trypanosoma cruzi generates a chronic inflammatory reactivity that induces an immune response directed to the host's tissues. The effectiveness of the treatment in the chronic phase is still unsatisfactory due, amongst o...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182013000103
更新日期:2013-06-01 00:00:00
abstract::This study assessed the role of historical processes on the geographic isolation, molecular evolution, and morphological diversification of host-parasite populations from the southern Brazilian coast. Adult specimens of Scleromystax barbatus and Scleromystax macropterus were collected from the sub-basin of the Nhundia...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182019000556
更新日期:2019-09-01 00:00:00
abstract::Several approaches were adopted for the disruption and removal of the tegumental surface from protoscoleces of the horse strain of the hydatid organism, Echinococcus granulosus. The effectiveness of each method and the purity of subsequent microthrix-enriched fractions obtained by differential centrifugation were eval...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000049064
更新日期:1985-02-01 00:00:00
abstract::Multiple parasitic infections have become increasingly recognized as a result of improvements in laboratory diagnosis and a growing population of immunocompromised individuals. This review examines the principles of chemotherapy in groupings of multiple infections which are of particular clinical significance. ...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182000017674
更新日期:2001-01-01 00:00:00
abstract::The effects of the phenothiazine, Stelazine, on Hymenolepis diminuta were investigated. The cestode was incubated for 10 min at 37 degrees C with 1 mM trifluoperazine, in the presence and absence of Ca2+. Assay of brush border enzymes showed that drug treatment lowered the activities of alkaline phosphatase, Ca2+-ATP'...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200005352x
更新日期:1987-02-01 00:00:00
abstract::Dr David Livingstone died on May 1st 1873. He was 60 years old and had spent much of the previous 30 years walking across large stretches of Southern Africa, exploring the terrain he hoped could provide new environments in which Europeans and Africans could cohabit on equal terms and bring prosperity to a part of the ...
journal_title:Parasitology
pub_type: 传,历史文章,杂志文章
doi:10.1017/S003118201600202X
更新日期:2017-10-01 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
pub_type: 杂志文章
doi:10.1017/S003118201900060X
更新日期:2019-09-01 00:00:00
abstract::Schizont-infected red blood cells (SI-RBC) from Plasmodium berghei-infected mice contain between 2 and 10 times as much sialic acid as uninfected RBC from the same blood (99-550 micrograms/10(10) RBC versus 33-65 micrograms/10(10) RBC). Total RBC samples from infected animals containing up to 63% ring- and trophozoite...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000065434
更新日期:1986-06-01 00:00:00
abstract::Following cloning of Leishmania (L.) amazonensis kinetoplast DNA two recombinant clones were identified: one specific for L. (L.) amazonensis and the other specific for L. (L.) amazonensis and closely related isolates. DNA sequences from these clones were compared with those of other kinetoplastids and oligonucleotide...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000080677
更新日期:1994-11-01 00:00:00
abstract::Vesiculated protoscoleces (VP) were produced by culturing freshly collected protoscoleces from Echinococcus granulosus horse liver hydatids in RPMI 1640 monophasic medium at 37 degrees C for 18 days. Half of the VP were used as such, the other half used after killing them by freeze-thawing. Nine-day-old chicken heart ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000078756
更新日期:1990-06-01 00:00:00
abstract::The biodiversity of Trypanosoma cruzi is one of the main factors complicating the understanding of its molecular epidemiology. As an alternative to classical genetic methods, investigators have used DNA-mediated transformation techniques to study this diversity. Recently, transient expression data were shown to correl...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182099005053
更新日期:1999-12-01 00:00:00
abstract::We examine the evolution of microparasites in response to the immune system of vertebrate hosts. We first describe a simple model for an acute infection. This model suggests that the within-host dynamics of the microparasite will be a 'race' between parasite multiplication and a clonally expanding response by the host...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s003118209700200x
更新日期:1997-01-01 00:00:00
abstract::Diagnostic PCR primers for Trichinella were constructed. Twelve pairs of primers were designed based on the sequences of random amplified polymorphic DNA, and 4 pairs of primers were designed based on the reported sequences of complementary DNA encoding excretory-secretory glycoproteins. With these primers, 31 samples...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182098002881
更新日期:1998-08-01 00:00:00
abstract::Neospora caninum is a cyst-forming parasite that causes abortion in cattle. Despite this parasite's ubiquitous distribution and wide host range, the number of N. caninum isolates obtained to date is limited. In vitro isolation of the parasite is arduous and often unsuccessful. In addition, most isolates have been obta...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S003118200800509X
更新日期:2008-12-01 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::The impact of immunization with gentamicin-attenuated Leishmania infantum (H-line) on the immunophenotypic profile of popliteal lymph node (PLN) and peripheral blood mononuclear cells (PBMCs) of dogs was assessed by flow cytometry and immunohistochemistry. Compared with the dogs infected with L. infantum wild-type (Gr...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182012001187
更新日期:2012-11-01 00:00:00
abstract::Most, if not all, organisms face attack by natural enemies and will be selected to evolve some form of defence. Resistance may have costs as well as its obvious benefits. These costs may be associated with actual defence or with the maintenance of the defensive machinery irrespective of whether a challenge occurs. In ...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182002001750
更新日期:2002-01-01 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
pub_type: 杂志文章
doi:10.1017/S0031182015000621
更新日期:2015-09-01 00:00:00
abstract::This study evaluated the effectiveness of low doses of benznidazole (BNZ) on continuous administration (BNZc), combined with allopurinol (ALO), in C57BL/6J and C3H/HeN mice infected with Trypanosoma cruzi Nicaragua strain and T. cruzi Sylvio-X10/4 clone. TcN-C57BL/6J was also treated with intermittent doses of BNZ (BN...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182018001567
更新日期:2019-03-01 00:00:00
abstract::The magnetic resonance imaging (MRI) appearance of the brain and spinal cord in humans with neuroangiostrongyliasis (NA) due to Angiostrongylus cantonensis infection has been well reported. Equivalent studies in animals are lacking. This case series describes clinical and MRI findings in 11 dogs with presumptively or ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182020001742
更新日期:2020-09-21 00:00:00
abstract::Leishmania produce several types of mucin-like glycoproteins called proteophosphoglycans (PPGs) some of which are secreted while others are found on the surface of promastigotes and amastigotes. These proteins are thought to be important in the transmission, invasion and subsequent intracellular survival of parasites....
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/S0031182007002569
更新日期:2007-08-01 00:00:00
abstract::Stability of trichostrogylid populations indicates that some form of density-dependent regulation occurs which could act through fecundity. We present evidence for intraspecific density-dependent effects in 1 of 2, dominant, abomasal nematodes species (Ostertagia gruehneri) of Svalbard reindeer (Rangifer tarandus plat...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182001007818
更新日期:2001-06-01 00:00:00
abstract::Many marine fisheries in South American Atlantic coasts (SAAC) are threatened by overfishing and under serious risk of collapsing. The SAAC comprises a diversity of environments, possesses a complex oceanography and harbours a vast biodiversity that provide an enormous potential for using parasites as biological tags ...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/S0031182013002138
更新日期:2015-01-01 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
pub_type: 杂志文章
doi:10.1017/S0031182005009509
更新日期:2006-04-01 00:00:00