What is causing the Tasmanian devils to get this disease they have?

Answer 1

Tasmanian devils are subject to a variety of cancers, but by far the worst one is the Devil Facial Tumour Disease. DFTD causes facial lesions which increase in size until the Tasmanian devil can no longer eat, and becomes susceptible to infections. DFTD has killed more than 90% of adults in high density areas and 45% of adults in medium to low density areas. At present, no Devils are being taken into captivity with existing captive animals in the hope that the current captive ones will be kept safe from the spread of this disease. The disease spreads through biting - and this is very common in Devils as they are natural fighters, battling tooth and claw for every morsel of food. Only the western third of Tasmania is currently free of the disease. 60% of the state is affected.

Currently there is no cure for the disease, and scientists estimate that unless the disease can be stopped in some way, Tasmanian Devils will be extinct within two decades. The Devils seem to be particularly vulnerable to this because of their genetic makeup: they have particularly low levels of genetic diversity and a chromosomal mutation which is unique among carnivorous mammals. It is hoped that, by studying this genetic makeup, scientists will be able to develop a vaccine and/or cure.

In January 2010, scientists isolated the genetic marker for the disease, and this is a big step towards finding a cure. Also, scientists have recently reported promising results in cancer cures from a drug manufactured from a certain type of brushwood in the North Queensland tropical rainforests. This has worked successfully in trials on cancerous tumours in cats, dogs and horses, and as well as being hoped to be a potential cure in human cancers, it is also hoped to be able to be used against DFTD. A number of groups have combined to fund, study, analyse and come up with a cure for DFTD. You can find out more about it or assist by going to the attached Web Page and selecting one of the options.

Answer 2

For many years, scientists have not yet been able to determine the cause of the Tasmanian Devil Facial Tumour Disease (DFTD), a fatal condition which causes cancers around the face and head of Tasmanian Devils. Recent research has filled in a few blanks, however.

It seems the problem is a matter of lack of genetic diversity, which goes back to when settlers were permitted to kill Tasmanian devils indiscriminately, fearing they were a threat to their livestock. Because there were fewer Tasmanian devils, there was insufficient genetic diversity for the animals to develop an immune defence against the cancer, or to breed young joeys with more resistance to the disease. This is outlined in more detail in the related link below.

There is no actual cure for the disease yet, butscientists have identified the genetic marker that causes Tasmanian devils to be predisposed to the disease, and this will go a long way towards finding a cure, and to determining why they get the disease in the first place. Also, scientists have recently reported promising results in cancer cures from a drug manufactured frfom a certain type of brushwood in the North Queensland tropical rainforests. This has worked successfully in trials on cancerous tumours in cats, dogs and horses, and as well as being hoped to be a potential cure in human cancers, it is also hoped to be able to be used against DFTD.