|
Frechkop S,. (1959). Le Pélage des zebres. Zoo Antwerpen, 25.
|
|
|
Friant M,. (1961). La morphologie des molaires chez les equidae, principalement ceux d'Europe. Acta Zool, 42, 299.
|
|
|
Geisbauer, G., Griebel, U., Schmid, A., & Timney, B. (2004). Brightness discrimination and neutral point. Can. J. Zool, 82(4), 660–670.
Abstract: Abstract: Equine brightness discrimination ability and color discrimination were measured using a two-choice discrimination
task. Two Haflinger horses (Equus caballus L., 1758) were trained to discriminate 30 different shades of grey
varying from low to high relative brightness. Their ability to distinguish shades of grey was poor, with calculated
Weber fractions of 0.42 and 0.45. In addition, a “neutral point” test to determine the dimensionality of color vision
was carried out. Three hues of blue-green were tested versus a range of grey targets with brightnesses similar to those
of the blue-green targets. A neutral point was found at about 480 nm. Thus, we can conclude that horses possess
dichromatic color vision.
|
|
|
GEYER CJ et al PY. 1989,. (). Gene survival in the Asian wild horse: II.Gene survival in the whole population, in subgroups, and through history. Zoo Biol, 8, 313–329.
|
|
|
Geyer Cj, T. E. (1988). Gene survival in the Asian wild horse: I. Dependence of gene survival in the Calgary breeding group pedigree. Zoo Biol, 7, 313–327.
|
|
|
Giebel H-D,. (1958). Visuelles Lernvermögen bei Einhufern. Zoolog Jb, 67, 33–519.
|
|
|
Giebel, H. D. (1958). Visuelles lernvermögen bei Einhufern. Zool. Jahrb. 67, , 229–231.
|
|
|
Gijzen A,. (1961). Onagers. Zoo, Antwerpen, 26, 113–117.
|
|
|
Ginsberg, J. R.,. (1989). The ecology of female behaviour and male mating success in the Grevy's zebra. Symp zool Soc Lond, 61, 89–110.
|
|
|
GREGORY WK. (1926). The horse in the tiger's skin. Zool Soc Bull, 29, 111–133.
|
|