Records |
Author |
Mouritsen, K.N. |
Title |
Hitch-hiking parasite: a dark horse may be the real rider |
Type |
Journal Article |
Year |
2001 |
Publication |
International Journal for Parasitology |
Abbreviated Journal |
Int J Parasitol |
Volume |
31 |
Issue |
13 |
Pages |
1417-1420 |
Keywords |
Animals; *Behavior, Animal; Ecology; Host-Parasite Relations; Snails/*parasitology; Trematoda/growth & development/*physiology; Trematode Infections/transmission |
Abstract |
Many parasites engaged in complex life cycles manipulate their hosts in a way that facilitates transmission between hosts. Recently, a new category of parasites (hitch-hikers) has been identified that seem to exploit the manipulating effort of other parasites with similar life cycle by preferentially infecting hosts already manipulated. Thomas et al. (Evolution 51 (1997) 1316) showed that the digenean trematodes Microphallus papillorobustus (the manipulator) and Maritrema subdolum (the hitch-hiker) were positively associated in field samples of gammarid amphipods (the intermediate host), and that the behaviour of Maritrema subdolum rendered it more likely to infect manipulated amphipods than those uninfected by M. papillorobustus. Here I provide experimental evidence demonstrating that M. subdolum is unlikely to be a hitch-hiker in the mentioned system, whereas the lucky candidate rather is the closely related but little known species, Microphallidae sp. no. 15 (Parassitologia 22 (1980) 1). As opposed to the latter species, Maritrema subdolum does not express the appropriate cercarial behaviour for hitch-hiking. |
Address |
Department of Marine Ecology, Institute of Biological Sciences, University of Aarhus, Finlandsgade 14, DK-8200 Aarhus N, Denmark. kim.mouritsen@stonebow.otago.ac.nz |
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0020-7519 |
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PMID:11595227 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2645 |
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Author |
No authors listed |
Title |
Workshop on the geographic spread of Aedes albopictus in Europe and the concern among public health authorities. Proceedings of a workshop held at the Istituto Superiore di Sanita, Rome, Italy, 19-20 December 1994 |
Type |
Conference Article |
Year |
1995 |
Publication |
Parassitologia |
Abbreviated Journal |
Parassitologia |
Volume |
37 |
Issue |
2-3 |
Pages |
87-90 |
Keywords |
*Aedes/growth & development/parasitology/virology; African horse sickness virus; Animals; Commerce; Dengue Virus; Dirofilaria; Disease Reservoirs; Ecology; Europe; Humans; *Insect Vectors/growth & development/parasitology/virology; Italy; *Mosquito Control/methods/organization & administration; Public Health; Rift Valley fever virus |
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ISSN |
0048-2951 |
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Notes |
PMID:8778669 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2659 |
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Author |
Eisgruber, H.; Stolle, F.A. |
Title |
[Clostridia in carcasses and fresh meat--a literature review] |
Type |
Journal Article |
Year |
1992 |
Publication |
Zentralblatt fur Veterinarmedizin. Reihe B. Journal of Veterinary Medicine. Series B |
Abbreviated Journal |
Zentralbl Veterinarmed B |
Volume |
39 |
Issue |
10 |
Pages |
746-754 |
Keywords |
Abattoirs; Animals; Cattle; Clostridium/*growth & development; *Food Microbiology; Horses; Meat/*microbiology; Muscles/*microbiology; Sheep; Swine |
Abstract |
Clostridia are of large clinical importance as well as in the field of food hygiene, where they are responsible for spoilage but they also have a certain significance as food poisoning organisms. Information on the ecology of Clostridia in samples of deep muscle tissue of slaughtered animals is insufficient. This article is intended to increase the knowledge on the occurrence of different Clostridia species in slaughtered animals. The main emphasis is put on the significance of clostridia in meat hygiene. The theoretical basis of the so called original content of microorganisms (intrinsic bacteria), the factors and pathways of Clostridia spreading in muscles and organs are demonstrated. |
Address |
Institut fur Hygiene und Technologie, Ludwig-Maximilians-Universitat Munchen |
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German |
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Original Title |
Clostridien in Schlachttierkorpern und frischem Fleisch--Eine Literaturubersicht |
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ISSN |
0514-7166 |
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Notes |
PMID:1492516 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2668 |
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Author |
Hutchinson, G.W.; Abba, S.A.; Mfitilodze, M.W. |
Title |
Seasonal translation of equine strongyle infective larvae to herbage in tropical Australia |
Type |
Journal Article |
Year |
1989 |
Publication |
Veterinary Parasitology |
Abbreviated Journal |
Vet Parasitol |
Volume |
33 |
Issue |
3-4 |
Pages |
251-263 |
Keywords |
Animals; Feces/*parasitology; Horses; Queensland; Seasons; Strongyle Infections, Equine/*parasitology; Strongyloidea/growth & development/*physiology; Strongylus/growth & development/*physiology; Tropical Climate |
Abstract |
Longevity in faeces, migration to and survival on herbage of mixed strongyle infective larvae (approximately 70% cyathostomes: 30% large strongyles) from experimentally deposited horse faeces was studied in the dry tropical region of North Queensland for up to 2 years. Larvae were recovered from faeces deposited during hot dry weather for a maximum of 12 weeks, up to 32 weeks in cool conditions, but less than 8 weeks in hot wet summer. Translation to herbage was mainly limited to the hot wet season (December-March), except when unseasonal winter rainfall of 40-50 mm per month in July and August allowed some additional migration. Survival on pasture was estimated at 2-4 weeks in the summer wet season and 8-12 weeks in the autumn-winter dry season (April-August). Hot dry spring weather (pre-wet season) was the most unfavourable for larval development, migration and survival. Peak counts of up to 60,000 larvae kg-1 dry herbage were recorded. The seasonal nature of pasture contamination allowed the development of rational anthelmintic control programs based on larval ecology. |
Address |
Graduate School of Tropical Veterinary Science, James Cook University of North Queensland, Townsville, Australia |
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English |
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ISSN |
0304-4017 |
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Notes |
PMID:2815535 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2672 |
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Author |
Hughes, K.L.; Sulaiman, I. |
Title |
The ecology of Rhodococcus equi and physicochemical influences on growth |
Type |
Journal Article |
Year |
1987 |
Publication |
Veterinary Microbiology |
Abbreviated Journal |
Vet Microbiol |
Volume |
14 |
Issue |
3 |
Pages |
241-250 |
Keywords |
Animals; Feces/microbiology; Horses; Hydrogen-Ion Concentration; Rhodococcus/*growth & development; *Soil Microbiology; Temperature |
Abstract |
Growth of Rhodococcus equi was studied in vitro. Optimal growth occurred under aerobic conditions between pH 7.0 and 8.5, at 30 degrees C. R. equi survived better in a neutral soil (pH 7.3) than it did in two acid soils (pH less than 5.5). It grew substantially better in soils enriched with faeces than in soils alone. Simple organic acids in horse dung, especially acetate and propionate, appear to be important in supporting growth of R. equi in the environment. The ecology of R. equi can be best explained by an environmental cycle allowing its proliferation in dung, influenced by management, grazing behaviour and prevailing climatic conditions. Preventive measures should be aimed at reducing or avoiding focal areas of faecal contamination in the environment. |
Address |
School of Veterinary Science, University of Melbourne, Parkville, Vic., Australia |
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English |
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ISSN |
0378-1135 |
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Notes |
PMID:3672866 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2678 |
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Author |
Takai, S.; Narita, K.; Ando, K.; Tsubaki, S. |
Title |
Ecology of Rhodococcus (Corynebacterium) equi in soil on a horse-breeding farm |
Type |
Journal Article |
Year |
1986 |
Publication |
Veterinary Microbiology |
Abbreviated Journal |
Vet Microbiol |
Volume |
12 |
Issue |
2 |
Pages |
169-177 |
Keywords |
Actinomycetales/classification/*growth & development; Animals; Corynebacterium/classification/*growth & development; Feces/microbiology; Female; Horses; Serotyping; *Soil Microbiology |
Abstract |
The ecology of Rhodococcus (Corynebacterium) equi in soil was studied on a horse-breeding farm. R. equi was cultured from soil at a depth of 0, 10, and 20 cm on the six sites of the farm at monthly intervals for 10 months from March to December of 1983. The highest numbers of R. equi were found in the surface soil. The mean number of bacteria in soil samples at every depth increased remarkably from 0 or 10(2) to 10(4) colony-forming units (CFU) g-1 of soil in the middle of April, and later decreased gradually. R. equi inoculated into six soil exudate broths prepared from surface soils at separate sites yielded suspensions with different optical densities, indicating differences in growth. The distribution of serotypes in the soil was similar to that in the horses on the farm. These findings indicated that R. equi could multiply in the soil and flourish in the cycle existing between horses and their soil environment. |
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0378-1135 |
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Notes |
PMID:3750818 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2683 |
Permanent link to this record |
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Author |
Barton, M.D.; Hughes, K.L. |
Title |
Ecology of Rhodococcus equi |
Type |
Journal Article |
Year |
1984 |
Publication |
Veterinary Microbiology |
Abbreviated Journal |
Vet Microbiol |
Volume |
9 |
Issue |
1 |
Pages |
65-76 |
Keywords |
Actinomycetales/growth & development/immunology/*isolation & purification; Animal Husbandry; Animals; Antigens, Bacterial/immunology; Artiodactyla/*microbiology; Australia; Digestive System/microbiology; Ecology; Feces/*microbiology; Horses/*microbiology; Hypersensitivity, Delayed; Rabbits/microbiology; *Soil Microbiology |
Abstract |
A selective broth enrichment technique was used to study the distribution of Rhodococcus equi in soil and grazing animals. Rhodococcus equi was isolated from 54% of soils examined and from the gut contents, rectal faeces and dung of all grazing herbivorous species examined. Rhodococcus equi was not isolated from the faeces or dung of penned animals which did not have access to grazing. The isolation rate from dung was much higher than from other samples and this was found to be due to the ability of R. equi to multiply more readily in dung. Delayed hypersensitivity tests were carried out on horses, sheep and cattle, but only horses reacted significantly. The physiological characteristics of R. equi and the nature of its distribution in the environment suggested that R. equi is a soil organism. |
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0378-1135 |
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Notes |
PMID:6719819 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2688 |
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Author |
Strickman, D. |
Title |
Notes on Tabanidae (Diptera) from Paraguay |
Type |
Journal Article |
Year |
1982 |
Publication |
Journal of Medical Entomology |
Abbreviated Journal |
J Med Entomol |
Volume |
19 |
Issue |
4 |
Pages |
399-402 |
Keywords |
Animals; Cattle; Diptera/*growth & development; Dogs; Ecology; Female; Geography; Horses; Humans; Insect Bites and Stings/epidemiology/veterinary; Male; Paraguay |
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0022-2585 |
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Notes |
PMID:7154018 |
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no |
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Equine Behaviour @ team @ |
Serial |
2690 |
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Author |
Callinan, A.P. |
Title |
The ecology of the free-living stages of Trichostrongylus axei |
Type |
Journal Article |
Year |
1978 |
Publication |
International Journal for Parasitology |
Abbreviated Journal |
Int J Parasitol |
Volume |
8 |
Issue |
6 |
Pages |
453-456 |
Keywords |
Animals; Ecology; Horses; Larva/growth & development; Sheep; Trichostrongyloidea/*growth & development |
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0020-7519 |
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Notes |
PMID:748218 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2697 |
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Author |
Grafner, G.; Zimmermann, H.; Karge, E.; Munch, J.; Ribbeck, R.; Hiepe, T. |
Title |
[Incidence and damages inflicted by simuliid flies in the GDR district of Schwerin] |
Type |
Journal Article |
Year |
1976 |
Publication |
Angewandte Parasitologie |
Abbreviated Journal |
Angew Parasitol |
Volume |
17 |
Issue |
1 |
Pages |
2-6 |
Keywords |
Animals; Cattle; Cattle Diseases/*parasitology; Climate; *Diptera/growth & development; Ecology; Ectoparasitic Infestations/*veterinary; Germany, East; Horse Diseases/*parasitology; Horses; Swine; Swine Diseases/*parasitology |
Abstract |
Systematic faunal studies in the district Schwerin showed at the present time there are 3 more or less damage-biotopes existing in the districts of Perleberg, Ludwigslust and Parchim; 5 river sources can be considered as potential sources, 5 are temporary and 2 are ephemeral whilst in 3 further areas environmental influences such as effluent impairs the flow of the river and the developmental stages of Simuliidae were not observed.--The following species were found: Boophthora erythrocephala, Wilhelmia salopiensis, Wilhelmia equina, Odagmia ornata, Eusimulium aureum and Eusimulium lundstroemi.--The damage statistics covering the period 1966--1971 showed in the district of Schwerin, due to Simuliid attacks, 38 cattle died, 170 were seriously ill; in 1967 5 horses were seriously ill; in 1971, 3 pigs died and 27 were seriously ill.--The symptoms were manifested by pathological petechiae, scabs and oedema, also by insufficiency of the heart and circulatory system, diminished performance and growth disturbance. In severe cases heart and circulation failure occurred, paresis, coma and death followed.--The real economic significance of the Simuliid attacks rest with its strong and prolonged distrubance in young animals, as well as in pronounced irreparable diminished performance in diseased dairy cattle. |
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German |
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Original Title |
Vorkommen und Schadwirkung von Kriebelmucken im DDR-Bezirk Schwerin |
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ISSN |
0003-3162 |
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Notes |
PMID:1267220 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2699 |
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