| Poison
Arrow Frogs ... Dendrobates sp. ::
Care Difficulty
Creating the right environment and vivarium set up is essential
but once achieved Dendrobates are relatively easy to keep.
Because of their bright and attractive colouration they are
often copied for the toy market so to avoid any problems
they are not recommended for households with small children.
:: Distribution
D. leucomelas is from Venezuela and adjacent regions, living
in damp lowland rainforests. D.auratus is from damp Central
American rain forests. D. azureus from damp forests and savannahs
in Surinam and D. tinctorius from the rain forests of Guyana
and Northern Brazil.
:: Description
Each of the above dendrobates has it own specific colouration.
D. leuocomelas is base black with three yellow to orange cross
bands with black dots in them. Adult size for all above species
3.8cm- 6.0cm
:: Housing
It is not advisable to house D.leucomelas with either D. tinctorius
or D. auratus as they will readily interbreed. A large well-planted
moist terrarium (70 x 60 x 70 cm) is ideal for these social
species. The terrarium can be glass or plastic. The substrate
should be peat moss covered with green moss and should have
an area with a small water container plus an area of larger
leaved plants such as bromeliads and ferns.
:: Temperatures
should be 23 -28 °C during the day and 18 -20 °C during
the night. Relative humidity should be varied between 70 to
100%. This can be achieved by either spraying with luke warm
water, a waterfall or misting system. Tap water should be aerated
or left to stand for a couple of day's prior to use to decholrinate
it.
:: Diet
They will take a variety of small insects, such as stage 1 & 2
crickets, fruit flies small worms, wax worms and spiders. Although
in the wild many of these species will eat ants, European ants
are not suitable. D. tinctorius can be sensitive to a poor
narrow diet
:: Breeding
For most species females are 2 - 5mm longer than males, they
are also more rounded in body shape. Male D. tinctorius and
D. azureus have thicker second and third toes compared to the
female. For most of the above species the males will start
to vocalise from 14 - 16 months, at first as a general croak
and then over the next couple of months develop into a more
species-specific courtship trill. A hierarchy develops over
a period of time between the different males and females within
the group. Often one female will be seen to jump on the back
of another, and hold the smaller or more submissive animal
into a position with its abdomen pressed to the ground. Competition
between males seems to me limited to vocalisation. The males'
stand proud, body erect on extended forelimbs with massively
inflated throat/vocal sacs and produces a continuous trill
announcing his desire to mate . The call is (10 - 18 seconds
in length, 30 pulses a second with a main frequency of 2 -3
kHz ) Most calling occurs 25 C or above.
In period s of high humidity the males will lure females to
suitable spawning sites. In the terrarium the site could be
a dish of water under a flowerpot, film canister, cork bark
or coconut shell. A female ready to spawn will hop onto the
back of one of the calling males and move her body to stroke
the males back. The eggs may be left in situ so that natural
brood behaviour may take place, however the eggs may succumb
to mould or may be eaten by other frogs.
To remove the spawn, fill a shallow dish to a depth of 1mm
with dechlorinated water at 22- 23 C and place the eggs in
dark side up. Keep in a dark place. When the larvae within
the egg appear to be slimming raise the water level to 10 -20
mm. Fertilised eggs will become clear and hatch after 7 - 14
days.
Dendrobates young are carnivorous and so if possible should
be reared separately. The larvae will usually not eat anything
for three to four days. After this period they will munch on
crumbled fish flakes, chopped earthworms, daphnea and tubifex.
Water should be refreshed at least every other day. Any fungal
or bacterial problems can be held at bay using very small amounts
of Malachite green.
Front legs will begin to appear from 8 - 20 weeks. Transfer
the larvae to a terrarium where there is plenty opportunity
to come a shore . The tiny Froglets can drown very easily.
Give them lots of moist moss and plenty of hiding places. The
once the Froglets tails have disappeared they will eat fruit
flies, aphids and micro crickets.
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