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Fish products have been shown to contain varying amounts of heavy metals, particularly mercury and fat-soluble pollutants from water pollution. Species of fish that are long-lived and high on the food chain, such as marlin, tuna, shark, swordfish, king mackerel and tilefish contain higher concentrations of mercury than others. [4]
Biotic Ligand Model. The Biotic Ligand Model (BLM) is a tool used in aquatic toxicology that examines the bioavailability of metals in the aquatic environment and the affinity of these metals to accumulate on gill surfaces of organisms. BLM depends on the site-specific water quality including such parameters as pH, hardness, and dissolved ...
Gill hyperplasia is a medical condition consisting of the inflammation, hyperplasia, or hypertrophy of gill tissue, caused by disease, poor water quality, or injury of the gills. Gill function is often impaired, causing significant oxidative stress. [1] Anabantiformes endure hyperplasia better than other species due to the possession of a ...
Fish gill. Gill arches bearing gills in a pike. Gills allow fish to breathe underwater. Respiratory mechanism in bony fish. The fish draws oxygen-rich water in through the mouth (left). It then pumps it over gills so oxygen enters the bloodstream, and allows oxygen-depleted water to exit through the gill slits (right) Fish gills are organs that ...
Fish also bioaccumulated cadmium through passive transport in the gills. [10] Cadmium adversely affected fish, causing endocrine disruption and inhibited reproduction, and sometimes mortality. [3] Due to the residents being unaware of the cadmium and its dangers, they used the water from the Jinzū to irrigate their rice fields.
Mercury is a heavy metal that cycles through the atmosphere, water, and soil in various forms to different parts of the world. Due to this natural mercury cycle, irrespective of which part of the world releases mercury it could affect an entirely different part of the world making mercury pollution a global concern.
Fish physiology. When threatened, the toxic pufferfish fills its extremely elastic stomach with water. [1] Fish physiology is the scientific study of how the component parts of fish function together in the living fish. [2] It can be contrasted with fish anatomy, which is the study of the form or morphology of fishes.
Amoebic gill disease (AGD) is a potentially fatal disease of some marine fish. It is caused by Neoparamoeba perurans, the most important amoeba in cultured fish.It primarily affects farm-raised fish of the family Salmonidae, most notably affecting the Tasmanian Atlantic salmon (Salmo salar) industry, costing the A$20 million a year in treatments and lost productivity. [1]