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Riftia pachyptila, commonly known as the giant tube worm and less commonly known as the giant beardworm, is a marine invertebrate in the phylum Annelida [1] (formerly grouped in phylum Pogonophora and Vestimentifera) related to tube worms commonly found in the intertidal and pelagic zones.
Autotoxicity, meaning self-toxicity, is a biological phenomenon whereby a species inhibits growth or reproduction of other members of its species through the production of chemicals released into the environment.
The vestimentum is used to retract the organism in and out of its tube. The trophosome is unique to tube worms. It was found to house bacterial symbiotes in Riftia. [7] Like other tube worms, they lack a digestive tract. [8] In order to survive, it holds endosymbiotic bacteria that supply the worm with nutrients.
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The Forest Service told NPR that this year, it phased out the use of one type of Phos-Chek formula - Phos-Chek LC95 - in favour of another - MVP-Fx - saying that the latter is less toxic to wildlife.
Acute toxicity describes the adverse effects of a substance that result either from a single exposure [1] or from multiple exposures in a short period of time (usually less than 24 hours). [ 2 ] To be described as acute toxicity, the adverse effects should occur within 14 days of the administration of the substance.
Going to Extremes. If you're looking for a warm getaway this winter, chances are you might first look to Florida or Texas. But the U.S. is a big place, and there's a lot of variation in ...
These chemicals persist in aquatic ecosystems, and are toxic to the organisms that live in them. Many researchers are concerned that their widespread use in everyday household disinfectants and cosmetics are contributing to antibiotic resistant bacteria, thus limiting microbial infection treatment options.