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Author Gates, S.
Title A Study of home ranges of free ranging Exmoore ponies Type Journal Article
Year 1979 Publication Mammal Revision Abbreviated Journal Mamm. Rev.
Volume (up) 9 Issue Pages :3-18
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Notes Approved no
Call Number refbase @ user @ Serial 765
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Author Czerlinski, G.H.; Erickson, J.O.; Theorell, H.
Title Chemical relaxation studies on the horse liver alcohol dehydrogenase system Type Journal Article
Year 1979 Publication Physiological Chemistry and Physics Abbreviated Journal Physiol Chem Phys
Volume (up) 11 Issue 6 Pages 537-569
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
Abstract 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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ISSN 0031-9325 ISBN Medium
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Notes PMID:44918 Approved no
Call Number Equine Behaviour @ team @ Serial 3813
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Author Wilson, M.T.; Silvestrini, M.C.; Morpurgo, L.; Brunori, M.
Title Electron transfer kinetics between Rhus vernicifera stellacyanin and cytochrome c (horse heart cytochrome c and Pseudomonas cytochrome c551) Type Journal Article
Year 1979 Publication Journal of Inorganic Biochemistry Abbreviated Journal J Inorg Biochem
Volume (up) 11 Issue 2 Pages 95-100
Keywords Animals; Copper; Cytochrome c Group/*metabolism; Electron Transport; Kinetics; Metalloproteins/*metabolism; Plant Proteins/*metabolism; *Plants, Toxic; Pseudomonas aeruginosa/*metabolism; Toxicodendron/*metabolism
Abstract 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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ISSN 0162-0134 ISBN Medium
Area Expedition Conference
Notes PMID:228006 Approved no
Call Number refbase @ user @ Serial 3879
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Author Eisenmann V,
Title Les métapodes d`Equus sensu lato. Type Journal Article
Year 1979 Publication Abbreviated Journal Géobios
Volume (up) 12 Issue Pages 863-886
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1050
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Author Graham, M.; Letz, R.
Title Within-species variation in the development of ultrasonic signaling of preweanling rats Type Journal Article
Year 1979 Publication Developmental Psychobiology Abbreviated Journal Dev Psychobiol
Volume (up) 12 Issue 2 Pages 129-136
Keywords Animals; *Animals, Newborn; Animals, Suckling; Body Weight; Cold/adverse effects; Environment; Genotype; Individuality; Object Attachment; Rats; Stress/*physiopathology; Ultrasonics; *Vocalization, Animal
Abstract The development of litter and individual differences in the rate of ultrasonic signaling of neonatal rats was studied. Systematic variations among litters and individuals emerged, without differential treatment. These differences were not correlated with variations in general development as indexed by body weight. Two experiments using a cross-fostering design showed that litter differences developed independently of variations in postnatal environment. These results indicate that the variations among litters in ultrasound rate have a prenatal, possibly genetic, etiology and may represent reliable indicants of response to environmental stress.
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ISSN 0012-1630 ISBN Medium
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Notes PMID:456751 Approved no
Call Number Equine Behaviour @ team @ Serial 4172
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Author Asa, C.S.; Goldfoot, D.A.; Ginther, O.J.
Title Sociosexual behavior and the ovulatory cycle of ponies (Equus caballus) observed in harem groups Type Journal Article
Year 1979 Publication Hormones and Behavior Abbreviated Journal Horm Behav
Volume (up) 13 Issue 1 Pages 49-65
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Abstract 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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ISSN 0018-506x ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5363
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Author Mori, U.
Title Ecological and sociological studies of gelada baboons. Individual relationships within a unit Type Journal Article
Year 1979 Publication Contributions to Primatology Abbreviated Journal Contrib Primatol
Volume (up) 16 Issue Pages 93-124
Keywords Animals; Female; Grooming; *Haplorhini; *Leadership; Male; Paternal Behavior; *Social Behavior; *Theropithecus
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ISSN 0301-4231 ISBN Medium
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Notes PMID:101345 Approved no
Call Number Serial 2046
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Author Mori, U.
Title Ecological and sociological studies of gelada baboons. Inter-unit relationships Type Journal Article
Year 1979 Publication Contributions to Primatology Abbreviated Journal Contrib Primatol
Volume (up) 16 Issue Pages 83-92
Keywords Animals; Female; *Haplorhini; Leadership; Sex Factors; *Social Behavior; Social Distance; *Theropithecus
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ISSN 0301-4231 ISBN Medium
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Notes PMID:101344 Approved no
Call Number Serial 2047
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Author Mori, U.
Title Ecological and sociological studies of gelada baboons. Unit formation and the emergence of a new leader Type Journal Article
Year 1979 Publication Contributions to Primatology Abbreviated Journal Contrib Primatol
Volume (up) 16 Issue Pages 155-181
Keywords Animals; Female; Grooming; *Haplorhini; Leadership; Male; *Social Behavior; Social Distance; *Theropithecus
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ISSN 0301-4231 ISBN Medium
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Notes PMID:101335 Approved no
Call Number Serial 2048
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Author Penzhorn Bl,
Title Social organisation of the Cape Moutain Zebra Equus Z. Zebra in the Moutain Zebra National Park Type Journal Article
Year 1979 Publication Abbreviated Journal Koedoe
Volume (up) 22 Issue Pages 115-156
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1450
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