The mean DO level for adult salmonids is 6.5 mg/L, and the minimum is 4 mg/L Â¹Â². These fish generally attempt to avoid areas where dissolved oxygen is less than 5 mg/L and will begin to die if exposed to DO levels less than 3 mg/L for more than a couple days Â¹â¹.n a stable body of water with no stratification, dissolved oxygen will remain at 100% air saturation. 100% air saturation means that the water is holding as many dissolved gas molecules as it can in equilibrium.
Animals (Zoonotic). Pets can carry parasites and pass parasites to people. Proper handwashing can greatly reduce risk. A zoonotic disease is a disease that can be passed between animals and humans. Zoonotic diseases can be caused by viruses, bacteria, parasites, and fungi.Some of these diseases are very common.For zoonotic diseases that are caused by parasites, the types of symptoms and signs can be different depending on the parasite and the person.oonotic diseases can be caused by viruses, bacteria, parasites, and fungi. Some of these diseases are very common. For zoonotic diseases that are caused by parasites, the types of symptoms and signs can be different depending on the parasite and the person.
Leptospirosis. Read more. Leptospirosis is a disease caused by bacteria carried in the urine of infected animals. Many different kinds of wild and domestic animals may carry the bacterium (e.g., cattle, pigs, horses, dogs, rodents, wild animals).yme Disease. Read more. Lyme disease is an inflammatory disease caused by the bacterium Borrelia burgdorferi, which normally lives in mice, squirrels, and other small animals. It is transmitted among these animalsâand to humansâthrough the bites of certain species of ticks.