Fungus commonly known as sac fungi or ascomycetes, constitute the largest taxonomic group within the Eumycota. These fungi form meiotic spores called ascospores, which are enclosed in a special sac-like structure called an ascus. This phylum includes morels, a few mushrooms and truffles, unicellular yeasts (e.g., of the genera "Saccharomyces", "Kluyveromyces", "Pichia", and "Candida"), and many filamentous fungi living as saprotrophs, parasites, and mutualistic symbionts (e.g. lichens). Prominent and important genera of filamentous ascomycetes include "Aspergillus", "Penicillium", "Fusarium", and "Claviceps". Many ascomycete species have only been observed undergoing asexual reproduction (called anamorphic species), but analysis of molecular data has often been
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