| Records |
| Author |
Crowell-Davis, S.L.; Houpt, K.A.; Carini, C.M. |
| Title |
Mutual grooming and nearest-neighbor relationships among foals of Equus caballus |
Type  |
Journal Article |
| Year |
1986 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
15 |
Issue |
2 |
Pages |
113-123 |
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| Abstract |
A 3-year study was carried out on the developmental behavior of foals from birth to 24 weeks of age and the behavior of mares living with foals. Mutual-grooming partners of foals were primarily other foals. The peak frequency of mutual grooming occurred during Weeks 9-12, when fillies mutual-groomed 1.6 times h-1 and colts mutual-groomed 0.9 times h-1. Fillies mutual-groomed more frequently than colts (P < 0.025). Fillies mutual-groomed randomly with colts and other fillies (P < 0.05), whereas colts mutual-groomed almost exclusively with fillies (P = 0.03). At all ages studied, if a foal's nearest neighbor was not its mother, it was more likely to be another foal than would be expected if the foal was associating randomly with non-mother ponies. Fillies were more likely than expected to have a filly rather than a colt as their nearest neighbor (P = 0.01). Thus, during their first few months of life, the foals studied exhibited patterns of behavior which were consistent with the development of the usual social milieu of unmanaged adults, in which several mares form a cohesive herd with one or more stallions associating with them. |
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Equine Behaviour @ team @ |
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2276 |
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| Author |
Cunningham, C.; Berger, J. |
| Title |
Wild horses of the Granite Range |
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Journal Article |
| Year |
1986 |
Publication |
Natural History |
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Pages |
32-39 |
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Equine Behaviour @ team @ |
Serial |
2279 |
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| Author |
Kirkpatrick, J.F.; Turner, J.W. Jr |
| Title |
Comparative reproductive biology of North American feral horses |
Type |
Journal Article |
| Year |
1986 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
J. Equine Vet. Sci. |
| Volume |
6 |
Issue |
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Pages |
224-230 |
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Equine Behaviour @ team @ |
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2326 |
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| Author |
Mayes, E.; Duncan, P. |
| Title |
Temporal patterns of feeding behaviour in free-ranging horses |
Type |
Journal Article |
| Year |
1986 |
Publication |
Behavior |
Abbreviated Journal |
Behav. |
| Volume |
96 |
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Pages |
105-129 |
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Equine Behaviour @ team @ |
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2351 |
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| Author |
Polley, L. |
| Title |
Strongylid parasites of horses: experimental ecology of the free-living stages on the Canadian prairie |
Type |
Journal Article |
| Year |
1986 |
Publication |
American Journal of Veterinary Research |
Abbreviated Journal |
Am J Vet Res |
| Volume |
47 |
Issue |
8 |
Pages |
1686-1693 |
| Keywords |
Animals; Canada; Ecology; Feces; Female; Horse Diseases/*epidemiology/parasitology; Horses; Larva; Ovum/cytology; Seasons; Strongyloides/isolation & purification; Strongyloidiasis/epidemiology/*veterinary |
| Abstract |
Each month for a 1-year period (October through September), equine fecal masses containing eggs of strongylid nematodes were placed outdoors on small grass plots in Saskatchewan, Canada. Thereafter, feces and grass from the plots were sampled after intervals of 1 week or longer, and the strongylid eggs and larvae recovered were counted. These observations were made over a 2-year period. Development of eggs to infective larvae occurred in all experiments, except those established in October, December, and January. Infective larvae from experiments set up in April through September survived that winter. During the summer, there was a gradual build up of infective larvae in the fecal masses, which reached a peak in August and September and then decreased into the winter. These results are discussed in the context of the control of strongylid parasites of horses on the Canadian prairie and in other areas of the world with a similar climate and similar horse management practices. |
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0002-9645 |
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PMID:3752676 |
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no |
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Equine Behaviour @ team @ |
Serial |
2682 |
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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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PMID:3750818 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2683 |
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| Author |
Crans, W.J.; McNelly, J.; Schulze, T.L.; Main, A. |
| Title |
Isolation of eastern equine encephalitis virus from Aedes sollicitans during an epizootic in southern New Jersey |
Type |
Journal Article |
| Year |
1986 |
Publication |
Journal of the American Mosquito Control Association |
Abbreviated Journal |
J Am Mosq Control Assoc |
| Volume |
2 |
Issue |
1 |
Pages |
68-72 |
| Keywords |
Aedes/*microbiology; Alphavirus/*isolation & purification; Animals; Disease Outbreaks/veterinary; Ecology; Encephalitis Virus, Eastern Equine/*isolation & purification; Encephalomyelitis, Equine/epidemiology/transmission/veterinary; Horse Diseases/epidemiology/transmission; Horses; Insect Vectors/microbiology; New Jersey |
| Abstract |
Eastern equine encephalitis virus (EEE) was isolated from the salt marsh mosquito, Aedes sollicitans, collected from coastal areas of New Jersey on 3 occasions during the late summer and fall of 1982. The isolations were made at a time when local Culiseta melanura were either undergoing a population increase or exhibiting high levels of EEE virus. Although no human cases were reported during the epizootic period, the data lend support to the hypothesis that Ae. sollicitans is capable of functioning as an epidemic vector in the coastal areas of New Jersey where human cases of EEE have been most common. |
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Mosquito Research and Control, Cook College, Rutgers University, New Brunswick, NJ 08903 |
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English |
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8756-971X |
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PMID:2853203 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2684 |
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| Author |
Cynx, J.; Hulse, S.H.; Polyzois, S. |
| Title |
A psychophysical measure of pitch discrimination loss resulting from a frequency range constraint in European starlings (Sturnus vulgaris) |
Type |
Journal Article |
| Year |
1986 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
12 |
Issue |
4 |
Pages |
394-402 |
| Keywords |
Animals; *Birds; Cognition; Female; *Generalization, Stimulus; Male; *Pitch Discrimination; Psychoacoustics; Transfer (Psychology) |
| Abstract |
Earlier research (Hulse & Cynx, 1985) revealed that a number of species of songbirds acquired a pitch discrimination between rising and falling sequences in an arbitrarily defined training range of frequencies, but then failed to generalize the discrimination to new frequency ranges--a frequency range constraint. The two experiments here provide a psychophysical estimate of how pitch discrimination deteriorated in one species as sequences were stepped out from the training range. The gradient showing loss of discrimination was much sharper than would have been anticipated by stimulus generalization or the training procedures, and appeared unaffected by the removal of rising and falling frequency information. The frequency range constraint and its psychophysical properties have implications both for the analysis of birdsong and the study of animal cognition. |
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0097-7403 |
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PMID:3772303 |
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no |
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Equine Behaviour @ team @ |
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2786 |
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| Author |
Flavell JH |
| Title |
The development of children's knowledge about the appearance-reality distinction |
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Journal Article |
| Year |
1986 |
Publication |
Am. Psychol. |
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41 |
Issue |
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418 |
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Equine Behaviour @ team @ |
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2992 |
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| Author |
Kortlandt A |
| Title |
The use of tools by wild-living chimpanzees and earliest hominids |
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Journal Article |
| Year |
1986 |
Publication |
J. Hum. Evol., |
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15 |
Issue |
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77 |
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Equine Behaviour @ team @ |
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3012 |
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