1 Demodex is a mite that lives in small numbers in the skin of healthy dogs and cats without causing a problem. 2  Unhealthy dogs and cats, especially those with immune problems, Cushing's Disease, or on steroid medications can develop severe demodex infection.umans have their own form of demodex mite. The demodex mite is not rareâit is found in small numbers in the skin of most dogs and cats because the mites on their mothers normally travel to young pets shortly after birth.
- the hazard is growth of bacteria: 1  control measures are continuous recording of temperature (automatic) or visual control of icing of the fish. 2  the critical limit for fish temperature is 1 C. 3  a log on temperature and icing observations must be kept. 4  corrective action is checking of fish from period out of control, sorting and rejection of low ...
Let's start off by talking a bit on how these so called limits of a temperature for trout are derived. They are actually derived when 50% of the fish die in a test! Yes, that is correct. The so called limits of trout in a stream are actually in many instances..lethal limits.