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The
distribution of monitors extends over several distinct climatic zones.
Because of the diversity of distribution it is beneficial for a keeper
to know from which climatic area the animals he/she keeps has been taken
from. Knowing only the scientific or common name is not enough, because
in some instances a single species can occur over various climate zones
and include many hundreds of thousands of kilometres (e.g. V. gouldii, V. niloticus). Animals from the extremes of their range may have
different demands from the environment and climate. Therefore selected
climate data from different locations are shown. It is essential to imitate
those data in the enclosure as close as possible, because this is very
important particularly for the propagation.
The hours of sunshine in the equatorial region is approximately 12 hours
per day over the whole year, these areas include the Indonesian islands,
New Guinea and the tropical north of Australia. Further to the south the
daylight period changes with the seasons. At 20° south latitude the
hours of daylight during the summer (December - February) is 13.5 hours,
and during the winter (June - August) the sun shines for only 11 hours.
At 35° southern latitude (Sydney) the daylight length is between 9.5
hours and 14.5 hours. Getting the right photoperiod is important and it
can be seen that animals from different areas may have different photoperiods.
It is therefore beneficial to know where your animals come from in order
to offer them optimal photoperiod and climatic conditions.
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