Home << 1 2 3 4 5 6 >>
List View
 | 
Citations
 | 
Details
   web
Records
Author Kamil, A.C.; Roitblat, H.L.
Title The Ecology of Foraging Behavior: Implications for Animal Learning and Memory Type Journal Article
Year 1985 Publication Annual Review of Psychology Abbreviated Journal
Volume 36 Issue (down) 1 Pages 141-169
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number refbase @ user @ Serial 3543
Permanent link to this record
 
 
Author Perusse, D.; Lefebvre, L.
Title Grouped sequential exploitation of food patches in a flock feeder, the feral pigeon Type Journal Article
Year 1985 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 11 Issue (down) 1 Pages 39-52
Keywords
Abstract Feral and laboratory flocks of rock doves ( ) show a pattern of grouped sequential exploitation when simultaneously presented with two dispersed, depleting patches of seed. This behavior contrasts with the ideal free distribution pattern shown when patches are small and concentrated. Grouped sequential exploitation consists of two phases: all pigeons first land together and feed at one patch, then leave one by one for the other patch. Departure times of individuals for the second patch are correlated with feeding rate at patch 1, which is in turn correlated with position in the dominance hierarchy. The decision to switch from patch 1 to patch 2 improves individual feeding rates in all cases, but is done slightly later than it should according to optimal foraging theory.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4227
Permanent link to this record
 
 
Author Bourlière, F.
Title Primate communities: Their structure and role in tropical ecosystems Type Journal Article
Year 1985 Publication International Journal of Primatology Abbreviated Journal Int. J. Primatol.
Volume 6 Issue (down) 1 Pages 1-26
Keywords
Abstract The structure of primate communities living in a number of undisturbed areas is described and compared. Species richness is highest in tropical rain forests of Africa and South America, where up to 14 different species can share the same habitat. The number of sympatric primates in woodlands and savannas is always much lower. Some striking differences in community structure may be observed between communities living in apparently similar habitats. Three major factors may be held responsible for such discrepancies: history and paleoecology, present spatial heterogeneity of the vegetation, and competition with other taxonomic groups. The role of primates in the functioning of forest ecosystems is discussed. Though their trophic impact may be important, the role they play in seed dispersal appears to be more significant; they contribute greatly to homeostasis, as well as to regeneration, of the rain forests. A number of ecological traits are particularly developed among primates and may have contributed to the rapid evolutionary success of the order. Their predominantly vegetarian diet allows them to build up higher population densities than sympatric carnivorous mammals;their arborealism permits them to make use of all edible plant material available in a tridimensional environment; the opportunistic tendencies of some cebids, cercopithecids, and pongids enable them to take advantage of a variety of habitats and situations; and finally, an extended socialization period and a long life-span, allowing them to develop social traditions, give to many of them a further possibility to adapt quickly to novel situations.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4251
Permanent link to this record
 
 
Author Crowell-Davis, S.L.
Title Nursing behaviour and maternal aggression among Welsh ponies (Equus caballus) Type Journal Article
Year 1985 Publication Applied Animal Behaviour Science Abbreviated Journal Appl Anim Behav Sci
Volume 14 Issue (down) 1 Pages 11-25
Keywords
Abstract Nursing behaviour and related aggression of mare-foal pairs was studied from birth (n = 21) to 24 weeks of age (n = 15) of the foal. Foals exhibited a decreasing length and frequency of nursing as they grew older. Mares rarely aggressed against their foals during nursing in the foal's first 4 weeks of life, but did so increasingly through Weeks 13-16, after which the rate of aggression during nursing decreased. Mares terminated nursing primarily by moving away, and were most likely to do so during the foal's first 4 weeks of life. They became gradually less likely to do so as the foal grew older. It was concluded that mares sometimes flex their hind limb on the side opposite the foal during nursing in order to conserve energy in a situation in which they would be remaining still anyway. There was no difference between colts and fillies in the frequency or duration of nursing or in the frequency with which their mothers aggressed against them or terminated nursing.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0168-1591 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6504
Permanent link to this record
 
 
Author Packer, C.; Pusey, A. E.
Title Asymmetric contests in social mammals: respect, manipulation and age-specific aspects Type Book Chapter
Year 1985 Publication Evolution: Essays in Honour of John Maynard Smith Abbreviated Journal
Volume Issue (down) Pages 173-86
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Camebridge University Press Place of Publication Camebridge Editor Greenwood, P.J.; Slatkin, M.;
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number refbase @ user @ Serial 819
Permanent link to this record
 
 
Author CROWELL-DAVIS SL et al
Title Snapping by foals of Equus caballus. Type Journal Article
Year 1985 Publication Zeitschrift für Tierpsychologie Abbreviated Journal Z. Tierpsychol.
Volume 69 Issue (down) Pages 42-54
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 997
Permanent link to this record
 
 
Author EISENMANN, V.
Title Le couagga: un zebre aux origines. Type Journal Article
Year 1985 Publication Abbreviated Journal La Recherche
Volume 16 Issue (down) Pages 254-256
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1055
Permanent link to this record
 
 
Author Klimov Vv,
Title A spatial- ethological organization of the herd of Przewalski's horses in Askania – Nova Type Journal Article
Year 1985 Publication Abbreviated Journal Zool J
Volume 64 Issue (down) Pages 282-295
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1276
Permanent link to this record
 
 
Author Duncan, P.
Title Time-budgets of Camargue horses III. Environmental influences Type Journal Article
Year 1985 Publication Behaviour Abbreviated Journal Behaviour
Volume 92 Issue (down) Pages 188-208
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2283
Permanent link to this record
 
 
Author Miller, J.A.
Title Telling a quagga by its stripes. (extinct South African animal) Type Journal Article
Year 1985 Publication Science News Abbreviated Journal Sci. News
Volume 128 Issue (down) Pages 70
Keywords
Abstract If, in a mix-up at a costume shop, a couple were issued the front half of a zebra suit and the back half of a horse, it could be considered a quagga disguise. But if the masqueraders were pressed as to whether they were more horse or more zebra, the latest biochemical research advises them to insist on zebra.

The quagga, a South African animal extinct for more than 100 years, has been a source of confusion among taxonomists. Some contend, on the basis of the quagga skins preserved in museums, that this front-striped animal is a zebra, either a fourth zebra species or a variant of the Plains zebra, whose hindquarter stripes are dim. But others have argued that the quagga's teeth and skeleton indicate that its nearest relative is the true horse.

Biochemists joined the fray last year when muscle tissue was obtained from a salt-preserved quagga pelt in a West German museum. The tissue yielded both proteins and genes that could be analyzed (SN:6/9/84, p. 356).

Now the analysis has yielded some results. According to “remarkably concordant” findings on the proteins and on the genes, the quagga was a subspecies of the Plains zebra, says Jerold M. Lowenstein of the University of California at San Francisco. He looked at the binding between a sample of quagga proteins and mixtures of antibodies that bind to blood-serum proteins of each of the extant Equus species. The quagga sample bound more of the antibodies against Plains zebra serum than against the other species. Lowenstein calculates that the quagga relationship with the Plains zebra is six times closer than its relationship with the two other zebra species.

“We had to use special techniques to show the difference,” Lowenstein told SCIENCE NEWS. “There is 99 percent identity on the protein level. All the [Equus] species diverged within the past 5 million years, which is only yesterday in evolutionary terms.”

The quagga-Plains zebra relationship is further supported by the analysis of quagga mitochondrial genes performed by Russell Higuchi and Allan Wilson at the University of California at Berkeley. They find seven times as great a difference between quagga and Mountain zebra DNA as they do between quagga and Plains zebra DNA.

“Stripes, the molecules tell us, do make a zebra,” Lowenstein concludes in the July 18 NEW SCIENTIST, “and the half-striped quagga was a Plains zebra.”
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2375
Permanent link to this record