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Author |
Saayman, G.S. |
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Title |
Behaviour of the adult males in a troop of free-ranging Chacma baboons (Papio ursinus) |
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Journal Article |
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Year |
1971 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
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Volume |
15 |
Issue |
1 |
Pages |
36-57 |
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Keywords |
Aggression; Animals; *Behavior, Animal; Female; Grooming; *Haplorhini; Homing Behavior; Humans; Leadership; Male; Papio; Pregnancy; Sex Factors; *Sexual Behavior, Animal; Social Dominance |
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English |
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0015-5713 |
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PMID:5003339 |
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no |
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2053 |
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Author |
Bell, R.H.V. |
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Title |
A grazing ecosystem in the Serengeti |
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Journal Article |
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Year |
1971 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
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Volume |
225 |
Issue |
1 |
Pages |
86-93 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2224 |
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Author |
Briand Petersen, J.C.; Casebeer,R.L. |
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Title |
A bibliography relating to the ecology and energetics of East African large mammals |
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Journal Article |
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Year |
1971 |
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Abbreviated Journal |
E. Afr. Wildl. J. |
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Volume |
9 |
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Pages |
1-23 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2249 |
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Author |
Feist, J.D. |
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Title |
Behavior of feral horses in the Pryor Mountain Wild Horse Range |
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Manuscript |
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Year |
1971 |
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Master's thesis |
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University of Michigan |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2291 |
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Author |
Maloiy, G.M.; Boarer, C.D. |
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Title |
Response of the Somali donkey to dehydration: hematological changes |
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Journal Article |
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Year |
1971 |
Publication |
Am J Physio |
Abbreviated Journal |
Am J Physiol |
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Volume |
221 |
Issue |
1 |
Pages |
37-41 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2344 |
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Author |
Trivers, R. L. |
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Title |
The evolution of reciprocal altruism |
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Journal Article |
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Year |
1971 |
Publication |
The Quarterly Review of Biology |
Abbreviated Journal |
Quart Rev Biol |
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Volume |
46 |
Issue |
1 |
Pages |
35-57 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5408 |
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Author |
Vaerman, J.P.; Querinjean, P.; Heremans, J.F. |
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Title |
Studies on the IgA System of the Horse |
Type |
Journal Article |
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Year |
1971 |
Publication |
Immunology |
Abbreviated Journal |
Immunol. |
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Volume |
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Issue |
21 |
Pages |
443 |
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Abstract |
Equine serum and secretions were found to contain a protein which
cross-reacted with an antiserum against human IgA, but not with antisera against
any other human immunoglobulin. The physicochemical properties of equint
IgA resembled those of human IgA. IgA was found to be the immunoglobulin
having the highest secretion vs serum concentration ratio in equine lacteal and salivary
secretions, and to be the protein produced by the majority of immunoglobulin-
containing cells in the lamina propria of the equine intestine. |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
6003 |
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Author |
Gardner, E.L.; Engel, D.R. |
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Title |
Imitational and social facilitatory aspects of observational learning in the laboratory rat |
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Journal Article |
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Year |
1971 |
Publication |
Psychonomic Science |
Abbreviated Journal |
Psychon. Sci. |
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Volume |
25 |
Issue |
1 |
Pages |
5-6 |
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Abstract |
Rats acquired a food-motivated leverpressing response by “observational learning” or by trial-and-error learning under conditions of social facilitation or isolation. Both the observational learning and social facilitation Ss learned faster than did the isolated trial-and-error Ss. There was no difference in speed of learning between the observational learning and social facilitation groups. It is suggested that some previous studies purporting to demonstrate observational learning may have demonstrated socially facilitated trial-and-error learning instead. |
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ISSN |
0033-3131 |
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Call Number |
Equine Behaviour @ team @ Gardner1971 |
Serial |
6421 |
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Author |
Hamilton, W.D. |
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Title |
Geometry for the selfish herd |
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Journal Article |
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Year |
1971 |
Publication |
Journal of theoretical biology |
Abbreviated Journal |
J. Theor. Biol. |
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Volume |
31 |
Issue |
2 |
Pages |
295-311 |
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Keywords |
Animals; Anura; *Behavior, Animal; Breeding; Communication; Evolution; Fear; Metallurgy; *Models, Biological; Probability; Snakes; *Spatial Behavior |
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Abstract |
This paper presents an antithesis to the view that gregarious behaviour is evolved through benefits to the population or species. Following Galton (1871) and Williams (1964) gregarious behaviour is considered as a form of cover-seeking in which each animal tries to reduce its chance of being caught by a predator.
It is easy to see how pruning of marginal individuals can maintain centripetal instincts in already gregarious species; some evidence that marginal pruning actually occurs is summarized. Besides this, simply defined models are used to show that even in non-gregarious species selection is likely to favour individuals who stay close to others.
Although not universal or unipotent, cover-seeking is a widespread and important element in animal aggregation, as the literature shows. Neglect of the idea has probably followed from a general disbelief that evolution can be dysgenic for a species. Nevertheless, selection theory provides no support for such disbelief in the case of species with outbreeding or unsubdivided populations.
The model for two dimensions involves a complex problem in geometrical probability which has relevance also in metallurgy and communication science. Some empirical data on this, gathered from random number plots, is presented as of possible heuristic value. |
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English |
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ISSN |
0022-5193 |
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Notes |
PMID:5104951 |
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Call Number |
refbase @ user @ |
Serial |
771 |
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