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Roberts, J.; Kacelnik, A.; Hunter, M.L. |
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Title |
A model of sound interference in relation to acoustic communication |
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Year |
1979 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
Issue  |
Part 4 |
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1271-1273 |
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2124 |
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Author |
Duncan, P.; Vigne, N. |
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Title |
The effect of group size in horses on the rate of attacks by blood-sucking flies |
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Journal Article |
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Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
27 |
Issue |
Part 2 |
Pages |
623-625 |
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refbase @ user @ |
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763 |
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Author |
Clutton-Brock, T.H.; Albon, S.D.; Gibson, R.M.; Guinness, F.E. |
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Title |
The logical stag: Adaptive aspects of fighting in red deer (Cervus elaphus L.) |
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Journal Article |
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Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
27 |
Issue |
Part 1 |
Pages |
211-225 |
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Abstract |
For red deer stags, fighting both has appreciable costs and yields considerable benefits. Up to 6% of rutting stags are permanently injured each year, while fighting success and reproductive success are closely related, within age groups as well as across them. Fighting behaviour is sensitive to changes in the potential benefits of fighting: stags fight most frequently and most intensely where potential benefits are high and tend to avoid fighting with individuals they are unlikely to beat. The relevance of these findings to theoretical models of fighting behaviour is discussed. |
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refbase @ user @ |
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860 |
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Author |
Kacelnik, A. |
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Title |
The foraging efficiency of great tits (Parus major L.) in relation to light intensity |
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Journal Article |
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Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
27 |
Issue |
Part 1 |
Pages |
237-241 |
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I report an experiment aimed at testing whether foraging efficiency of great tits is limited by light intensity at the time of the dawn chorus. Captive great tits hunting for prey under different luminance conditions were less successful in finding prey when foraging, hunted for a lower proportion of their time, and handled individual prey items for longer when luminance was under approximately 7 cd/m2. This luminance is not reached in the field until after the time of the dawn chorus, suggesting that in the early morning foraging is limited by light intensity. I suggest that a satisfactory functional explanation of the dawn chorus must take into account the comparatively low foraging opportunity early in the morning, as well as the factors affecting the opportunity for singing and other territorial activities. |
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2125 |
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Author |
Powell, R.A. |
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Title |
The dog: Its domestication and behavior : By . New York: Garland STPM Press (1978). 296 pp. $24.50 |
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Journal Article |
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Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
27 |
Issue |
Part 1 |
Pages |
318-1211 |
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2146 |
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Author |
Krzeminska, W. |
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Title |
[The child learns about the world] |
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Journal Article |
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Year |
1979 |
Publication |
Pielegniarka i polozna |
Abbreviated Journal |
Pieleg Polozna |
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Issue |
7 |
Pages |
24-25 |
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Keywords |
Child; *Child Development; Child, Preschool; Humans; *Learning |
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Polish |
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Original Title |
Dziecko poznaje swiat |
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ISSN |
0048-4148 |
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Notes |
PMID:260249 |
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no |
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Call Number |
refbase @ user @ |
Serial |
43 |
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Author |
Czerlinski, G.H.; Erickson, J.O.; Theorell, H. |
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Title |
Chemical relaxation studies on the horse liver alcohol dehydrogenase system |
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Journal Article |
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Year |
1979 |
Publication |
Physiological Chemistry and Physics |
Abbreviated Journal |
Physiol Chem Phys |
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Volume |
11 |
Issue |
6 |
Pages |
537-569 |
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Keywords |
Alcohol Oxidoreductases/*metabolism; Animals; Buffers; Electron Transport; Ethanol/metabolism; Horses; Hydrogen-Ion Concentration; Liver/*enzymology; Mathematics; NAD/metabolism; Oscillometry; Osmolar Concentration; Temperature; Time Factors |
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Chemical relaxation studies on the system horse liver alcohol dehydrogenase, nicotinamide adenine dinucleotide, and ethanol were conducted observing fluorescence changes between 400 and 500 nm. Temperature-jump experiments were performed at pH 6.5, 7.0, 8.0, and 9.0; concentration-jump experiments at pH 9.0. The reciprocal of the slowest relaxation time was found to be linearly dependent upon the enzyme concentration for relatively low enzyme concentrations, as predicted earlier. Use of the wide pH-range necessitated expression of the four apparent dissociation constants of the catalytic reaction cycle in terms of pH-independent constants. The system was described in terms of only one (or two) catalysis-linked protons not associated with the electron transfer. Protonic steps in a buffered system are in rapid equilibrium, too fast to be measured with the equipment available. Assuming only two of the four bimolecular reaction steps in the four-step cycle are fast compared to the remaining two, six cases may be considered with six expressions for the reciprocal of the slowest relaxation time. Comparison with the experimental data revealed that the bimolecular reaction steps governing the slowest relaxation time change with pH. Above the effective time resolution of the temperature-lump instrument with fluorescence detection (0.1 msec) only one other relaxation time was detectable and only at pH 9. This relaxation time, found to be independent of the concentration of all reactants within experimental error (r = 10 +/- 5 msec), is most likely due to an interconversion among ternary complexes. |
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English |
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0031-9325 |
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PMID:44918 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3813 |
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Author |
Nallan, G.B.; Pace, G.M.; McCoy, D.F.; Zentall, T.R. |
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Title |
Temporal parameters of the feature positive effect |
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Journal Article |
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Year |
1979 |
Publication |
The American journal of psychology |
Abbreviated Journal |
Am J Psychol |
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Volume |
92 |
Issue |
4 |
Pages |
703-710 |
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Keywords |
Animals; Columbidae; Conditioning, Operant; *Discrimination Learning; Form Perception; Male; *Time Perception |
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Abstract |
Trial duration and intertrial interval duration were parametrically varied between groups of pigeons exposed to a discrimination involving the presence vs. the absence of a dot. Half the groups received the dot as the positive stimulus (feature positive groups) and half the groups received the dot as the negative stimulus (feature negative groups). Faster learning by the feature positive birds (feature positive effect) was found when the trial duration was short (5 sec) regardless of whether the intertrial interval was short (5 sec) or long (30 sec). No evidence for a feature positive effect was found when the trial duration was long (30 sec) regardless of the length of the intertrial interval (30 sec or 180 sec). The results suggest that short trial duration is a necessary condition for the occurrence of the feature positive effect, and neither intertrial interval nor trial duration/intertrial interval ratio are important for its occurrence. The suggestion that mechanisms underlying the feature positive effect and autoshaping might be similar was not supported by the present experiment since the trial duration/intertrial interval ration parameter appears to play an important role in autoshaping but not the feature positive effect. |
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0002-9556 |
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PMID:532834 |
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Call Number |
refbase @ user @ |
Serial |
269 |
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Author |
Ribeiro, H.S.; Larangeira, N.L.; Paiva, F. |
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Title |
[Prevalence of Dictyocaulus arnfieldi (Cobbald, 1884) Railiet & Henry 1907, in Pantaneira breed horses of the region of Pocone, MT] |
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Journal Article |
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Year |
1979 |
Publication |
Arquivos do Instituto Biologico |
Abbreviated Journal |
Arq Inst Biol (Sao Paulo) |
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46 |
Issue |
3-4 |
Pages |
107-110 |
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Animals; Brazil; Dictyocaulus/*isolation & purification; Ecology; Female; Horses/*parasitology; Male; Metastrongyloidea/*isolation & purification; Seasons |
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The authors sacrificed fifty-five horses originated from the “Pantanal”, lowlands in the State of Mato Grosso in two different periods, droughty period and flooded and they described for the first time the Dictyocaulus arnfieldi in Mato Grosso. Relationship between droughty and flooded periods proved not to occur. |
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Portuguese |
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Prevalencia de Dictyocaulus arnfieldi (Cobbald, 1884) Railiet & Henry 1907, em cavalos de raca pantaneira da regiao de Pocone, MT |
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0020-3653 |
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PMID:554599 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2693 |
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Author |
Wilson, M.T.; Silvestrini, M.C.; Morpurgo, L.; Brunori, M. |
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Title |
Electron transfer kinetics between Rhus vernicifera stellacyanin and cytochrome c (horse heart cytochrome c and Pseudomonas cytochrome c551) |
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Journal Article |
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Year |
1979 |
Publication |
Journal of Inorganic Biochemistry |
Abbreviated Journal |
J Inorg Biochem |
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11 |
Issue |
2 |
Pages |
95-100 |
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Animals; Copper; Cytochrome c Group/*metabolism; Electron Transport; Kinetics; Metalloproteins/*metabolism; Plant Proteins/*metabolism; *Plants, Toxic; Pseudomonas aeruginosa/*metabolism; Toxicodendron/*metabolism |
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The electron transfer reactions between Rhus vernicifera stellacyanin and either horse heart cytochrome c or Pseudomonas aeruginosa cytochrome c551 were investigated by rapid reaction techniques. The time course of electron transfer is monophasic under all conditions, and thus consistent with a simple formulation of the reaction. Both stopped-flow and temperature-jump experiments yield equilibrium constants in reasonable agreement with values calculated from the redox potentials. The differences in reaction rate between the two cytochromes and stellacyanin are discussed in terms of the Marcus theory. |
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0162-0134 |
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PMID:228006 |
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Call Number |
refbase @ user @ |
Serial |
3879 |
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