Page 1 SCIE 131 Assignment 4-1 The Zebra Mussel (Dreissena polymorpha) is a mollusk inherent 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 as well 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 find 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 surround that provides the elements needed for the Zebra Muss el to thrive. Zebra Mussels are filter feeders and feed primarily on planktonic alga and detritus, which was abundant in the Great Lakes. The lakes urine system temperature ranges from 32 degrees to 86 degrees Fahrenheit and is fresh water. The Zebra Mussels range of gross profit is from a preferent 54 degrees to 68 degrees Fahrenheit. It has been discovered they have the susceptibility 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 mollify could be as long as five months (Zebra Mus! sels in North America). All of these grammatical constituents fit into the Zebra Mussels range of tolerance and then maximizing its biotic potential. Page 2 Another factor that has lead to the rapid sum up in the Zebra mussel nation is the low number of natural predators. Their high reproduction position makes it... If you want to get a unspoiled essay, order it on our website:
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