Attention Researchers:

A variety of illnesses and injuries are seen in the frogs arriving at the Cairns Frog Hospital and many of the former are still mysteries to us. In some cases, we are simply waiting on pathology results but sometimes the results aren't conclusive. This page is to present photographs and descriptions of some of the more unusual conditions being seen here. If you have seen any of these or have any information to offer about what might be causing the specified condition/symptom, please contact us.

 

Virus associated with Metabolic Bone Disease symptoms

One of the tadpoles with a distinct right angle at the base of the tailWe received some batches of diseased tadpoles - all Litoria caerulea - from one suburb around January 2003 which exhibited symptoms of bent tails, washed out colour, sluggishness, and high mortality rates. Only a half dozen of each batch lived long enough to metamorph and most of those died one by one over the subsequent months. The last of the surviving individuals died in October 2005.

Sequencing was used by JCU in Townsville to confirm that a virus was indeed present but the researcher could not identify it because of the lack of material in GeneBank. Histopath was also done and large numbers of cestodes were present in the intestines. Other comments were directed to the condition of the liver: "abundant intrasinusoidal, mainly erythroid, haemopoiesis. Hepatic veins also contain numerous erythroid precursor cells."

The symptoms present in the juveniles are:

  • note the  'shine' on the skin which shows the curvature of the spine; also the twisted legs, compressed body length and two tone appearancescoliosis
  • twisted legs in a repeating pattern involving a curvature just above the 'ankle' joint
  • a weird two-tone shade of bluey-green (normally emerald green in colour)
  • compressed growth from snout to vent (frog looks like it has been scrunched up from front to back)
  • growth at front of body is normal and back of body is stunted, especially rear legs

The juveniles have been given direct access to sunlight, reptile vitamins and calcium powder, and high levels of B complex on their food but this has not made any difference to their condition. If you have seen anything at all similar in frogs, toads, or salamanders, please contact us.

 

Mystery condition which appears fungal

Please see the page on the new "respiratory/nervous system" disease - we have received well over 6000 frogs since July 1st (2002) that have very consistent symptoms of a contagious condition which appears to be fungal in nature. However, tests are indicating that these frogs do not have chytrid or Mucor amphibiorium. In fact, the histology reveals nothing at all and can't even determine a cause of death. Also, the condition most definitely has a respiratory component which M. amphibiorium does not have. It appears clinically first in the breathing/lungs, moves into the gastrointestinal tract and then goes subcutaneous, causing skin irritation and increased secretions and eventually ulcerative dermatitis. The frogs are responding beautifully to treatment with White spot remedy (formaldehyde/malachite green) but we are unsure of what fungus we are curing. The full symptoms are listed in the "nervous system fungus" page.

 

If you have any information at all to offer about any of these descriptions, please comment even if it seems insignificant. Thanks for your time!