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Author |
Ödberg, F.O. |
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Title |
A Study of the Hearing Ability of Horses |
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Journal Article |
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Year |
1978 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
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Volume  |
10 |
Issue |
2 |
Pages |
82-84 |
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Abstract |
SUMMARY The ability of 10 horses to hear frequencies between 14 and 25 Kc/s was tested. The horses appeared to perceive ultrasounds by showing either fright reactions or Pryer reflexes to all of the 12 frequencies. The highest frequencies were heard less by older animals, and elicited more reactions in geldings than in mares. RÉSUMÉ Le pouvoir auditif de 10 chevaux à entendre des fréquences comprises entre 14 et 25 kilocycles a étééprouvée. Les chevaux semblent percevoir des ultrasons en réagissant par des attitudes de frayeur ou par des réflexes de PRYER à toutes les fréquences étudiées. Les fréquences les plus élevées sont perues moins facilement par les chevaux agés et provoquèrent des réactions plus vives chez les hongres que chez les juments. ZUSAMMENFASSUNG Bei 10 Pferden wurde die Fähigkeit untersucht, Frequenzen zwischen 14 und 25 Kc/sec zu hören. Die Pferde schienen Ultraschall hören zu können: sie manifestierten Angst oder Pryer-Reflexe bei allen 12 Frequenzen. Die höchsten Frequenzen konnten von älteren Tieren weniger gut wahrgenommen werden; sie riefen auch bei Wallachen stärkere Reaktionen hervor als bei Stuten. |
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Blackwell Publishing Ltd |
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2042-3306 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5230 |
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Author |
Zentall, S.S.; Zentall, T.R.; Barack, R.C. |
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Title |
Distraction as a function of within-task stimulation for hyperactive and normal children |
Type |
Journal Article |
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Year |
1978 |
Publication |
Journal of learning disabilities |
Abbreviated Journal |
J Learn Disabil |
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Volume |
11 |
Issue |
9 |
Pages |
540-548 |
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Keywords |
*Attention; Child; Child, Preschool; Color Perception; Female; Humans; Hyperkinesis/*psychology; Male; Motor Skills; *Task Performance and Analysis; Visual Perception |
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0022-2194 |
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PMID:731119 |
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Call Number |
refbase @ user @ |
Serial |
270 |
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Author |
Klingel H, |
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Title |
Den Wildeseln wird die Wüste zu eng |
Type |
Journal Article |
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Year |
1978 |
Publication |
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Abbreviated Journal |
Sielmanns Tierwelt |
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Volume |
11 |
Issue |
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Pages |
46-51 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1312 |
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Author |
Coblentz, B.E. |
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Title |
The effects of feral goats (Capra hircus) on island ecosystems |
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Journal Article |
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Year |
1978 |
Publication |
Biol Conserv |
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Volume |
13 |
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Call Number |
Equine Behaviour @ team @ Coblentz1978 |
Serial |
6250 |
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Author |
Bertenthal BI; Fischer KW |
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Title |
Development of self-recognition in the infant |
Type |
Journal Article |
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Year |
1978 |
Publication |
Dev. Psychol. |
Abbreviated Journal |
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Volume |
14 |
Issue |
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Pages |
44 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2980 |
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Author |
KOWNACKI M et al, |
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Title |
Observations of the twenty |
Type |
Journal Article |
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Year |
1978 |
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Abbreviated Journal |
Genetica Polonica |
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Volume |
19 |
Issue |
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Pages |
61-77 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Call Number |
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Serial |
1328 |
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Author |
RYDER OA et al, |
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Title |
Chromosome banding studies of the equidae |
Type |
Journal Article |
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Year |
1978 |
Publication |
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Abbreviated Journal |
Cytogent Cell Genet |
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Volume |
20 |
Issue |
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Pages |
323-350 |
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Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Call Number |
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Serial |
1538 |
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Author |
Iwuala, M.O.; Okpala, I. |
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Title |
Studies on the ectoparasitic fauna of Nigerian livestock II: Seasonal infestation rates |
Type |
Journal Article |
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Year |
1978 |
Publication |
Bulletin of Animal Health and Production in Africa. Bulletin des Sante et Production Animales en Afrique |
Abbreviated Journal |
Bull Anim Health Prod Afr |
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Volume |
26 |
Issue |
4 |
Pages |
351-359 |
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Keywords |
Animal Diseases/*epidemiology; Animals; Cattle; Dogs; Ecology; Ectoparasitic Infestations/epidemiology/*veterinary; Goats; Horses; Nigeria; Seasons; Sheep; Swine |
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ISSN |
0378-9721 |
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Notes |
PMID:756759 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2695 |
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Author |
Iwuala, M.O.; Okpala, I. |
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Title |
Studies on the ectoparasitic fauna of Nigerian livestock I: Types and distribution patterns on hosts' |
Type |
Journal Article |
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Year |
1978 |
Publication |
Bulletin of Animal Health and Production in Africa. Bulletin des Sante et Production Animales en Afrique |
Abbreviated Journal |
Bull Anim Health Prod Afr |
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Volume |
26 |
Issue |
4 |
Pages |
339-350 |
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Keywords |
Animal Diseases/*epidemiology; Animals; Cattle; Dogs; Ecology; Ectoparasitic Infestations/epidemiology/*veterinary; Goats; Horses; Nigeria; Sheep; Swine |
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ISSN |
0378-9721 |
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Notes |
PMID:756758 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2696 |
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Author |
Parker, G.A.; MacNair, M.R. |
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Title |
Models of parent-offspring conflict. I. Monogamy |
Type |
Journal Article |
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Year |
1978 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
26 |
Issue |
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Pages |
97-110 |
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Abstract |
Theoretical models for Trivers (1974) concept of parent-offspring conflict are examined for species in which the effects of the conflict are felt by full sibs. A rare conflictor gene will spread if Image , whereÆ’(m) is the fitness gained by a conflictor relative to a non-conflictor offspring (Æ’(m) >1), and m is the amount of parental investment taken by a conflictor relative to m = 1 for a non-conflictor. The range of m alleles which can spread against the parent optimum decreases as the cost to the parent increases until a point is reached where there is no conflict of evolutionary interests. There would be no polymorphism for conflictor: non-conflictor alleles unless special conditions prevail. The conflictor allele which spreads most rapidly as a rare mutant against the parental optimum is not an evolutionarily stable strategy (ESS). The ESS for parent-offspring conflict in monogamous species has m0 = Æ’(m0)/2[dÆ’(m0)/dm0]. The analytical solutions are confirmed throughout by simulations. |
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Notes |
10.1016/0003-3472(78)90009-X |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4901 |
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