sludge worm造句

• The lifecycle of the parasite a number of stages and requires two hosts _ a Tubifex ( sludge worm ) and either a trout or salmon.
• Another example of microevolutionary adaptation to environmental pollution has been demonstrated by Dallinger and coworkers in populations of the freshwater sludge worm, " Tubifex tubifex ".
• For example, sludge worms are sometimes considered " intermediate hosts " for whirling disease, even though it is known that the parasite causing the disease reproduces sexually inside them.
• Today, sediments on the river bottom are " among the most contaminated and toxic that have ever been reported . " Only sludge worms inhabit the Indiana Harbor and Ship Canal, indicating that severe pollution exists.
• Situated on the only Great Lake ever declared unfit for sludge worms ( and this was before it caught fire ), Cleveland over the years has had more scorn heaped on it than any other city in the country.
• Among the films shown were " Circulation of Blood in a Frog's Foot ", " Red Sludge Worms " and the notorious " The Cheese Mites ", the views of which were preceded by a scene of a man ( played by Duncan himself ) horrified by what he sees when he views a piece of Stilton through a magnifying glass.