Archive for the ‘Frog Facts’ Category


The Frog Chytrid Fungus and Frog Friendly Pond Plants

February 15th, 2010 by Lisa

There is a danger when buying plants for your frog pond.  They may harbour the deadly frog fungus which is decimating frog populations world wide.  

According to the NSW Environment and Climate Change web site, scientists think the decline and disappearance of some frogs species in Australia and overseas may be partly due to a disease caused by a Chytrid fungus.  The fungus attacks the parts of a frog’s skin that have keratin in them. Since frogs use their skin in respiration, this makes it difficult for the frog to breathe. The fungus also damages the nervous system, affecting the frog’s behaviour. 

If you are planning to buy pond plants consider sourcing them from stores which have a healthy frog population.   That way you will know the plants are fungus free.

Two such stores which I have found in Perth, WA are Watergarden World on Erindale Road in Balcatta and the City Farmers store near Herdsman Lake.  Both stores offer a variety of great pond plants and are good sources of advice as well.  They both also have many varieties of frogs which have taken up residence in their ponds and gardens and they always seem to have plenty of fat tadpoles swimming around. 

If the frogs vote these habitats as safe and sustainable then I think we can feel safe buying their products for our own back yard havens.


Link to a Frog Info Site

April 15th, 2009 by Lisa

The Frog Doctor directed me to a fabulous site about Western Australian Frogs. Check it out at Perthnow.


Sweet, clean air

January 13th, 2009 by Lisa

When tadpoles first emerge from their eggs their gills are on the outside of their bodies, like little fans on the sides of their head trapping oxygen for the taddy to breath. Because they are so small at this stage it is not easy to see and they quickly develop and their gills are incorporated into their bodies.

Because frogs often lay their spawn in still water, as the puddles dry up, they lose their oxygen content and so the tadpoles need to find air in different ways. This is why you often see tadpoles popping to the surface for a quick gulp of air before diving for their hiding spot on the bottom of a pond again. They are just trying to breath.

Frogs also have a curious relationship with oxygen. Their skin is a very porous membrane and so substances pass easily through it. So oxygen from the water in which they are swimming is absorbed through their skins and this is why they can swim under water for a long time to evade a predator. They literally breath underwater!

This ability to absorb things through their skins is also why we need to protect our ground water from chemicals. Anything that is present in the environment will be absorbed by the frogs and this can be very hazardous to their delicate systems.


Competitive Edge

May 8th, 2008 by Lisa

Motorbike frogs are very competitive survivors.

One of their little tricks for eliminating the competition is to exude a chemical as they emerge from the water in the last stages of developing from tadpole to frog. This chemical has the effect of inhibiting the development of other tadpoles in the pond. The tadpoles don’t turn into frogs and therefore don’t compete for food with the lucky fellows who did.

It seems to me that this chemical builds up as more froglets emerge until the concentration is enough that it has the desired effect on all the remaining tadpoles. Pretty slick, huh!

Another nasty trick is associated with their hunting style. Motorbike frogs are motion hunters. They will eat only things that move and are of a suitable size. Unfortunately, this includes smaller frogs. Yikes! This is a very effective way of eliminating upcoming threats to the food source.

Motorbike frogs grow in proportion to the amount of food they eat and, so, the more they eat the bigger they get. It is very important to them, therefore, to protect their claim on the food in their environment. It’s a Frog eat Frog world!