Náttúrufræðingurinn - 2005, Blaðsíða 45

Tímarit Hins íslenska náttúrufræðifélags
forefather in Ukrania as previously sug-
gested. The questions of when and how
the horse was domesticated and tamed
are discussed and compared to the histo-
ry of domestication of the other farm ani-
mals. A chapter on grazing and the
nature of horse feeding and digestion
compared to ruminants discusses the
relationship between foraging behav-
iour, anatomy and digestive system in
evolutionary terms. Finally, social behav-
iour of the species is discussed empha-
sizing how the environment has shaped
their behaviour throughout their evolu-
tionary history. Also, the two social sys-
tems which characterize different species
within the genus, ie Type I (dominant
male with a harem of females and sub-
adults) and Type II (with males defend-
ing mating territories) are discussed in
light of selection factors and lastly how
the behaviour of the domestic horse has
remained remarkedly unchanged.
Heimildir
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