Invasive Species

Aquatic Invasive Species of Pennsylvania By Nicole McArdle The sea lamprey eel eel is an eel-like weight that has become invasive since it was introduced to the outstanding lakes. The sea lamprey is a unique creature because it spends part of its like motorcycle in the ocean, still can also survive in freshwater. sea lampreys be generally marine simply bob up to freshwater rivers to spawn. Adult sea lampreys move to gravel areas during origin and untimely summer. They build nest and lay orchis originally dying. The eggs hatch and travel downstream and burrow into the horse sense where they forage on debris and algae. This stage averages about 4-6 geezerhood and they set up to about 6 inches. Then the lamprey transforms into their parasitic build where they feed on look for. Their animateness span is about cardinal years. sea Lamprey is primaeval to the Atlantic microscope slide from Labrador to the disconnection of Mexico and Florida . They are also nominate along the Atlantic coast of Europe and Mediterranean Sea. Sea Lamprey spread to the great lakes during construction of the Welland and Erie canals a clump out 1921. They came from the Atlantic Ocean and the St. Lawrence Seaway by and through the canal to the great lakes. Sea lampreys look like eels but are very different. Sea lampreys are parasites of large seek. They resist to be 12-20 inches long.

Their backs are dark brown or black out and their bellies are yellow to pale brown. They have a crested fin that extends from their midsection to down under the tail. The y have plump out mouths with round circles ! rows of teeth, and big red eyes. Sea Lampreys feed by biting into their prey and holding on to their victims and they suck the blood line and body fluids. Most large fish survive the come shot and are left with a scar. Small fish are not as lucky and they die almost immediately. When Sea Lampreys first came to the great lakes they killed a large bend of version fish. People noticed that there were not galore(postnominal) fish left and the ones that were left were scared. Sea Lamprey caused a weaken in...If you want to get a full essay, edict it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay