Records |
Author |
Santos, L.R.; Miller, C.T.; Hauser, M.D. |
Title |
Representing tools: how two non-human primate species distinguish between the functionally relevant and irrelevant features of a tool |
Type |
Journal Article |
Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
6 |
Issue |
4 |
Pages |
269-281 |
Keywords |
Animals; *Discrimination Learning; Female; Form Perception/*physiology; Habituation, Psychophysiologic/*physiology; Imitative Behavior; Macaca mulatta/*growth & development/*psychology; Male; Motor Skills; Practice (Psychology); Saguinus/*growth & development/*psychology; Species Specificity |
Abstract |
Few studies have examined whether non-human tool-users understand the properties that are relevant for a tool's function. We tested cotton-top tamarins (Saguinus oedipus) and rhesus macaques (Macaca mulatta) on an expectancy violation procedure designed to assess whether these species make distinctions between the functionally relevant and irrelevant features of a tool. Subjects watched an experimenter use a tool to push a grape down a ramp, and then were presented with different displays in which the features of the original tool (shape, color, orientation) were selectively varied. Results indicated that both species looked longer when a newly shaped stick acted on the grape than when a newly colored stick performed the same action, suggesting that both species perceive shape as a more salient transformation than color. In contrast, tamarins, but not rhesus, attended to changes in the tool's orientation. We propose that some non-human primates begin with a predisposition to attend to a tool's shape and, with sufficient experience, develop a more sophisticated understanding of the features that are functionally relevant to tools. |
Address |
Department of Psychology, Harvard University, Cambridge, MA 02138, USA. laurie.santos@yale.edu |
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English |
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ISSN |
1435-9448 |
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Notes |
PMID:12736800 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2570 |
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Author |
Dauphin, G.; Zientara, S.; Zeller, H.; Murgue, B. |
Title |
West Nile: worldwide current situation in animals and humans |
Type |
Journal Article |
Year |
2004 |
Publication |
Comparative Immunology, Microbiology and Infectious Diseases |
Abbreviated Journal |
Comp Immunol Microbiol Infect Dis |
Volume |
27 |
Issue |
5 |
Pages |
343-355 |
Keywords |
Americas/epidemiology; Animals; Birds/virology; Culex/*virology; *Disease Outbreaks; Disease Reservoirs; Europe/epidemiology; Horses/virology; Humans; Insect Vectors/*virology; Middle East/epidemiology; West Nile Fever/*epidemiology/*veterinary/virology; West Nile virus/*growth & development |
Abstract |
West Nile (WN) virus is a mosquito-borne flavivirus that is native to Africa, Europe, and Western Asia. It mainly circulates among birds, but can infect many species of mammals, as well as amphibians and reptiles. Epidemics can occur in rural as well as urban areas. Transmission of WN virus, sometimes involving significant mortality in humans and horses, has been documented at erratic intervals in many countries, but never in the New World until it appeared in New York City in 1999. During the next four summers it spread with incredible speed to large portions of 46 US states, and to Canada, Mexico, Central America and the Caribbean. In many respects, WN virus is an outstanding example of a zoonotic pathogen that has leaped geographical barriers and can cause severe disease in human and equine. In Europe, in the past two decades there have been a number of significant outbreaks in several countries. However, very little is known of the ecology and natural history of WN virus transmission in Europe and most WN outbreaks in humans and animals remain unpredictable and difficult to control. |
Address |
AFSSA Alfort, UMR1161 (INRA-AFSSA-ENVA), 22 rue Pierre Curie, BP 63, 94703 Maisons-Alfort Cedex, France |
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English |
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ISSN |
0147-9571 |
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Notes |
PMID:15225984 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2635 |
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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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English |
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ISSN |
0020-7519 |
ISBN |
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Conference |
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Notes |
PMID:11595227 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2645 |
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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 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2672 |
Permanent link to this record |
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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 |
ISBN |
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Notes |
PMID:3672866 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2678 |
Permanent link to this record |
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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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ISSN |
0378-1135 |
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Notes |
PMID:3750818 |
Approved |
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 |
ISBN |
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Notes |
PMID:6719819 |
Approved |
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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English |
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ISSN |
0022-2585 |
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Notes |
PMID:7154018 |
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no |
Call Number |
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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English |
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ISSN |
0020-7519 |
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Notes |
PMID:748218 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2697 |
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Author |
Polyanskaya, A.I.; Ovchinnikov, V.V. |
Title |
Rate of growth and size of the brain of the horse mackerel |
Type |
Journal Article |
Year |
1974 |
Publication |
The Soviet Journal of Ecology |
Abbreviated Journal |
Sov J Ecol |
Volume |
4 |
Issue |
3 |
Pages |
256-257 |
Keywords |
Animals; Body Weight; *Brain; Ecology; Fishes/*growth & development; Genetics, Population; Organ Size |
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ISSN |
0096-7807 |
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Notes |
PMID:4825911 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2708 |
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