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Blooms of silicoflagellates cause fish mortality because their silica skeletons obstruct and abrade fish gills, leading to asphyxiation and subsequent death. Additionally, some silicoflagellates are thought to produce ichthyotoxins, i.e. substances toxic to fish, although their effect is debated.
Psoroptes on a rabbit ear crust. Psoroptes mites are responsible for causing psoroptic mange in various animals, leading to economic losses among farmers of cattle, sheep and goats. [1]
Abradable coatings are made up of materials that will abrade, or wear off, when they rub against a mating surface. The coating acts as a sacrificial layer when it comes in contact with another surface so that the base material underneath is protected and remains unharmed.
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The northern two-lined salamander (Eurycea bislineata) is a species of salamander in the family Plethodontidae found in Canada and the United States. [2] Its natural habitats are temperate forests, temperate shrubland, rivers, intermittent rivers, freshwater marshes, freshwater springs, arable land, and urban areas.
When approached, they, especially small individuals, will shift to the opposite side of the host for protection. Whalesuckers impose a hydrodynamic cost to their host, their adhesive disks can abrade the skin, and they sometimes attach to inconvenient locations, such as near the blowhole or the genitals. The spinning behavior of dolphins ...
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The Disston authors state, "To abrade, or file, ancient man used sand, grit, coral, bone, fish skin, and gritty woods,—also stone of varying hardness in connection with sand and water." [3] The Bronze Age and the Iron Age had various kinds of files and rasps. Archaeologists have discovered rasps made from bronze in Egypt, dating back to the ...