For anyone wondering why we just do not kill the toadlets
now? Quite simply because we are not sure if they are only
canetoads. There may be other natural frog or toad species
emerging at the same time and these things are hard to see
(let alone photograph at this size)
They will get theirs later in the dry season when they
converge on the verandahs and are bigger.
19 days on
Cleaned out the tadpole pond today (should of been done at
least 2 days ago), it had about 15 floating cane toads the
size of the ones in the above photo all dead. Given their
high breeding rate, I gather there is also a high mortality
rate. There were no remains of the larger tadpoles found,
and with the pond water a bit clearer for a while, it is
good to see their movements. I kept about half of the debris
on the bottom of the pond & replaced the water (Since the
tadpoles feed on their own droppings, it is good to not
clean the pond too thoroughly) (so I read). The other
bathtub pond is keeping very clean on its own (possibly
because it is partially covered and has a large population
of fish), there are about 15 tadpoles in there and they are
growing well. (and another 25 cane toads that have been
moving out over the last week)
|
21 Days on
There is new frog spawn in the bathtub since the evening
storm.
One thing we have noticed in out attempts to breed Green
tree Frogs is that finally the older frogs have actually utilised the breeding ponds during the mating calls.
They
still prefer to use the natural ponds topped up after the
rains. (And so far this wet season we have had several ponds
stay wet, enabling the tadpoles to survive. Unlike previous
years when the showers were too far apart and ponds dried
within a week))
It will be interesting to see what type
of treefrog emerges from this tub. The tadpoles in this
tub are larger than the cane toads pictured. |
Frogs eggs in the bathtub with a few
small canetoads floating about since the tadpole rescue |
After going for another walk after the storm last night, I
realise that the green tree frog numbers may not be in
decline (since arrival of the Cane Toad), the air was filled
with the deafening sound of a several hundred frogs. And
many of those were the unmistakable deeper sounding green
tree frog.
January 23. A month
on since the initial spawn & the ponds have
nearly dried up several times. Not that it appears to matter
as with the warmer temps of 36C the pond water has
been uncomfortable to walk in and it is apparent that
there is no tadpole life in them at all. So what we
gather from this is that only the cane toads survived by
turning into toads within weeks, while the frog takes much
longer & hence gets beaten by the weather.
We did come across a thumbnail sized green tree frog the
other night in the garden, so some have survived at an
earlier time in some other pond that we were not keeping an
eye on.
We are removing more than half the bath tub & kids pool
water each week and refilling with fresh pure rainwater
(from the tank). This keeps the water nicer & enables the
tadpoles to grow (because tadpoles produce an enzyme into
the water to limit growth of other tadpoles). (Ever had 10
tadpoles for 5 months & wonder why they didn't grow?). You
need to dilute the water by keeping it clean & refreshed.
One large tadpole has 4 well developed legs and a tail
(still has remnants of gills but is trying to breathe), many
others are still at the back leg stage. All up there
are probably only 30ish tadpoles remaining & we know that
these are not canetoads.
Tonight there are 10 large green tree frogs around the house
with a few more out around the garden. (& our regular possum
doing the rounds)
January 28 - After a 100 mm of rain this morning the
frogs have been calling since lunch time & into the night.
It was more of a "this is it guys" call. During the evening
there were 3 pairs of frogs noted in a "piggy back" position
and these were not involved in calling. Nor were 2 of these
pairs anywhere near water (like the calling frogs). The
frogs pictured here were in embrace for over 2 hours in the
palm tree. They were over 30 metres from any water.
The Cane Toads were also out calling "dut dut dut"
throughout the night. |
What a contrast in green colours. |
Mid February 04- Well the rain this year has been
fairly consistent, with a lot of water still laying around.
Last night I counted 17 fingernail sized green tree frogs
around the house (removed 4 from inside) Plus another 4
medium sized (4cm long) & the usual 4 bigger frogs. This is
just a small fraction of what is around.
In summary, the Green Tree frog is here to stay!
It is just like all the other creatures that have good years
& bad years (last year 2004, was been good for it).
Cane Toads on the other hand seem to do OK in bad years as
well, which is the concern. We may find that with the birds,
marsupials & reptiles, that feast on the frogs (and have
since been knocked for 6 by the consumption of cane toads)
that there may be an explosion of frog numbers over the next
few years.
Try our Froglog 2005
We sure miss the meander of the giant goannas (& their
smaller siblings) as they used to wander through the yard (&
into the chook pen !@*?). Never could of imagined they would
all be gone in the local Katherine area due to a few pesky
cane toads arriving.
Give them a few years and they will be back (Just like at
Borroloola). |
