Page 1 SCIE 131 Assignment 4-1 The Zebra Mussel (Dreissena polymorpha) is a mollusk autochthonic to an area in the Ukraine and Russia near the Black Sea and the Caspian Sea. In the 1700s and 1800s canals were built round the seas and into Europe to make shipping easier. Theses canals excessively allowed the Zebra Mussel to expand into untested areas. It appears that in 1985 or 1986 the Zebra Mussel had been introduced to the great(p) Lakes region and was discover in Lake Erie in 1988. It is believed the Zebra mussels were carried in the ballast urine of transoceanic ships first appearance the Great lakes. By 1996 Zebra Mussels had been found in all of the Great Lakes (Zebra Mussels in North America). The Great Lakes provides an purlieu that provides the elements needed for th e Zebra Mussel to thrive. Zebra Mussels are filter feeders and feed primarily on planktonic alga and detritus, which was abundant in the Great Lakes. The lakes weewee temperature ranges from 32 degrees to 86 degrees Fahrenheit and is fresh piddle. The Zebra Mussels range of leeway is from a preferent 54 degrees to 68 degrees Fahrenheit. It has been discovered they have the office to advantageously adapt to superiorer water temperatures.
The Zebra Mussel will begin spawning when water temperature reach 54 degrees and continues until the temperature drops below 54 degrees. This means the spawning anneal could be as long as five months (Zebra Mussels in North America). All of t! hese computes fit into the Zebra Mussels range of tolerance therefore maximizing its biotic potential. Page 2 Another factor that has lead to the rapid sum up in the Zebra mussel creation is the low number of natural predators. Their high reproduction site makes it... If you want to get a unspoiled essay, order it on our website:
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