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Solomatin Ao,. (1964). The reproduction and behaviour by onager. Bull M O va isp Prirodi OTD Biol, 69, 71–82.
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Groves Cp,. (1964). Skull-changes due to captivity in certain equidae. Z Säugetierk, 31, 44–46.
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Blanchard J,. (1964). Informations recherchees d`après les équides européens figurés – Viking Fund. Publ Anthropol, 39, 3–24.
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Erz W,. (1964). Tooth eruption and replacement in Burchell's Zebra. Arnoldia, 1, 1–8.
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Hamilton, W. D. (1964). The genetical evolution of social behaviour. I. J. Theor. Biol., 7(1and 2), 1–52.
Abstract: A genetical mathematical model is described which allows for interactions between relatives on one another's fitness. Making use of Wright's Coefficient of Relationship as the measure of the proportion of replica genes in a relative, a quantity is found which incorporates the maximizing property of Darwinian fitness. This quantity is named “inclusive fitness”. Species following the model should tend to evolve behaviour such that each organism appears to be attempting to maximize its inclusive fitness. This implies a limited restraint on selfish competitive behaviour and possibility of limited self-sacrifices.
Special cases of the model are used to show (a) that selection in the social situations newly covered tends to be slower than classical selection, (b) how in populations of rather non-dispersive organisms the model may apply to genes affecting dispersion, and (c) how it may apply approximately to competition between relatives, for example, within sibships. Some artificialities of the model are discussed.
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Rashek Va,. (1964). 24 hours regime of the onager and ist behviour in Barsa – Kelmes Island Aralsee.
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Wackernagel H,. (1964). Die Basler Grant – Zebra – Gruppe. Bull Zool Garten Basel, 12.
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Fisher, J. (1964). The Natural History of Aggression.
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