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Vrba, E. S. (1985). Environment and evolution: alternative causes of the temporal distribution of evolutionary events. S Afr J Anim Sci, 81, 229–236.
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Kummer, H., & Goodall, J. (1985). Conditions of Innovative Behaviour in Primates. Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 308(1135), 203–214.
Abstract: Innovative behaviour achieved through exploration, learning and insight heavily depends on certain motivational, social and ecological conditions of short duration. We propose that more attention should be given to what these conditions are and where they are realized in natural groups of non-human primates. Only to the extent that such favourable conditions were frequently realized in a social structure or an extraspecific environment could selective pressures act on innovative abilities. There is hope that research into field conditions of innovative behaviour will help to identify its selectors in evolution.
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Eisenmann V,. (1985). Quagga. Mammoth Trumpet, 2.
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Hoffmann R,. (1985). On the development of scial behaviour in immature males of a feral horse population. Z Säugetierk, 50, 302–314.
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Kolter L,. (1985). Soziale Bezeihungen zwischen den Przewalskipferden im Kölner Zoo. Z Kölner Zoo, 28, 193–201.
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Lowenstein Jm,. (1985). Half- striped quagga was a plains zebra. New Scientist, 107, 27.
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Lowenstein Jm,. (1985). The cry of the quagga. Counterpoints in Science, , 40–42.
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Lowenstein Jm, R. O. (1985). Immunological systematics of the extinct quagga. Experienta, 41, 1192–1193.
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Panov En, Z. L. (1985). The population structure and behaviour of the feral asses on the Ogurchinskii Island. Zool J 6, 4, 750–762.
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Panov En, Z. L. (1985). The structure of population and behaviour of feral asses on the Ogurchinskii Island. Zool J, 64, 1071–1083.
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