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Author |
Sinclair, A.R.E. |
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Title |
Serengeti: Dynamics of an Ecosystem |
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1979 |
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Equine Behaviour @ team @ |
Serial |
2346 |
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Author |
Kordal, R.J.; Parsons, S.M. |
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Title |
Liver alcohol dehydrogenase subunit equivalence studied by rapid sampling of alcohol product formed from sequentially bound [4α-3H]NADH |
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Journal Article |
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Year |
1979 |
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Archives of Biochemistry and Biophysics |
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Volume |
194 |
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2 |
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439-448 |
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Horse liver alcohol dehydrogenase has been claimed to exhibit presteady-state “half-of-the-sites” reactivity with aromatic substrates under some circumstances. To clarify the role of half-of-the-sites reactivity in liver alcohol dehydrogenase the direct sampling of the alcohol product formed immediately after initiation of the reaction was studied using a rapid sampling device and [4α-3H]NADH. Liver alcohol dehydrogenase which contained a very low mole-ratio of [4α-3H]NADH bound to one subunit of the dimer was rapidly mixed with excess 4-(2'-imidazolylazo)benzaldehyde substrate and nonradioactive NADH to initiate the reaction, which was allowed to proceed for a short time before it was quenched. If strong HClO4 quench was used isolation of total free and bound azoalcohol product was possible. If NaOH quench was used isolation only of the azoalcohol product released by the enzyme was possible since most enzyme-bound azoalcohol was reversed back to azoaldehyde by the base. The pH-jump reversal reaction also was characterized spectroscopically by stopped flow technique. Nearly fullsites reactivity was observed for reaction in either direction. Furthermore (4α-3H]NADH bound firstly to one subunit in the dimer reacted essentially identically to NADH bound secondly to the other subunit. Thus, half-of-the-sites reactivity was not observed in these experiments nor did they give any indication of liver alcohol dehydrogenase active site nonequivalence induced by coenzyme binding or reaction. |
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refbase @ user @ |
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3983 |
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Author |
Roberts, S. |
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Title |
Order and Dispute: An Introduction to Legal Anthropology |
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Miscellaneous |
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Year |
1979 |
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Equine Behaviour @ team @ |
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4931 |
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Author |
Harrington, F.H.; Mech, L.D. |
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Title |
Wolf howling and its role in territory maintenance |
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1979 |
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Behaviour |
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68 |
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Equine Behaviour @ team @ Harrington1979 |
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6455 |
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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 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
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Part 2 |
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623-625 |
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refbase @ user @ |
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763 |
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Author |
Gates, S. |
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Title |
A Study of home ranges of free ranging Exmoore ponies |
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Journal Article |
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Year |
1979 |
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Mammal Revision |
Abbreviated Journal |
Mamm. Rev. |
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9 |
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:3-18 |
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refbase @ user @ |
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765 |
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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 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
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Part 1 |
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211-225 |
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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 |
Asa, C.S.; Goldfoot, D.A.; Ginther, O.J. |
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Title |
Sociosexual behavior and the ovulatory cycle of ponies (Equus caballus) observed in harem groups |
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Journal Article |
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Year |
1979 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
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13 |
Issue |
1 |
Pages |
49-65 |
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Observations of sociosexual behavior of adult ponies, made on two harem groups (each comprised of one vasectomized male and three females), were correlated with follicular development and ovulation for a total of 15 cycles (minimum of 2 cycles per female). Mean cycle length (interovulatory interval) was found to be 19.7 days, with behavioral estrus lasting 7-8 days (5.5 days preovulatory; 2.3 days postovulatory). Estrous females typically showed increased frequencies of approaching and following the stallion, urinating, presenting, clitoral winking, and tail raising. Approaching and following the stallion appeared earlier and persisted longer than other estrous responses. Deviations from the modal estrous pattern included cycles with subestrus, continual estrus, behavioral estrus in the absence of ovulation, and displays of female mounting. Dominance tests revealed that a mare's status was unaffected by the phases of the estrous cycle. The presence of more than one estrous female affected the copulatory performance of both stallions, most notably in reduced latencies to first mount, intromission, and ejaculation, in spite of differences between the stallions in sexual vigor. Each stallion usually selected the dominant mare for copulation when there were multiple estrous females present, but mounts were not displayed exclusively to one female per test. The social testing situation made apparent the importance of use of space in sociosexual communication in this species, particularly in avoidance of the stallion by diestrous mares and standing alone or in proximity to him by estrous mares. |
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0018-506x |
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Equine Behaviour @ team @ |
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5363 |
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Author |
Boy, V.; Duncan, P. |
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Title |
Time-budgets of Camargue horses. I. Developmental changes in the time-budgets of foals. |
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Journal Article |
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1979 |
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Behaviour |
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Behaviour |
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71 |
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187-201 |
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1803 |
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Author |
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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