scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 649
Page 1 SCIE 131 Assignment 4-1 The Zebra Mussel Dreissena polymorpha is a mollusk native to an area in the Ukraine and Russia near the Black Sea and the Caspian Sea In the 1700s and 1800s canals were built around the seas and into Europe to make shipping easier Theses canals also allowed the Zebra Mussel to expand into new areas It appears that in 1985 or 1986 the Zebra Mussel had been introduced to the Great Lakes region and was discovered in Lake Erie in 1988 It is believed the Zebra mussels were carried in the ballast water of transoceanic ships entering 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 environment that provides the elements needed for the Zebra Mussel to thrive Zebra Mussels are filter feeders and feed primarily on planktonic algae and detritus which was abundant in the Great Lakes The lakes water temperature ranges from 32 degrees to 86 degrees Fahrenheit and is fresh water The Zebra Mussels range of tolerance is from a preferred 54 degrees to 68 degrees Fahrenheit It has been discovered they have the ability to easily adapt to higher 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 season could be as long as five months Zebra Mussels in North America All of these factors fit into the Zebra Mussels range of tolerance thus maximizing its biotic potential Page 2 Another factor that has lead to the rapid increase in the Zebra mussel population is the low number of natural predators Their high reproduction rate makes it impossible for the predators to regulate the Zebra Mussel population Crawley et al 1992 Some of the beds in contain more than 30000 and
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA