Lichen anatomy and physiology the Ascomycota, with about 40% of species forming such an association. Some of these lichenized fungi occur in orders with nonlichenized fungi that live as saprotrophs or plant parasites (for example, the Leotiales, Dothideales, and Pezizales). Other lichen fungi occur in only five orders in which all members are engaged in this habit (Orders Graphidales, Gyalectales, Peltigerales, Pertusariales, and Teloschistales). Lichenized and nonlichenized fungi can even be found in the same genus or species. Overall, about 98% of lichens have an ascomycetous mycobiont. Next to the Ascomycota, the largest number of lichenized fungi occur in the unassigned fungi imperfecti. Comparatively
Diseases and parasites in salmon farms.Antibiotics and pesticides are often used to control the diseases and parasites, as well as lasers. These predictions have been disputed by other scientists and there is much debate on whether the correlation between sea lice infestation and declining wild salmon stocks is driven by causal factors. Gas bubble disease is caused by contact with supersaturated water. Diseases and parasites in salmon This article is about diseases and parasites in salmon, trout and other salmon-like fishes of the Salmonidae family. According to Canadian biologist Dorothy Kieser, the myxozoan parasite "Henneguya salminicola" is commonly found in the flesh of salmonids. It