American Beaver




Theproposed species scientifically identified as Castor Canadensis. Itis also commonly referred as “beaver”. However vernacular namessuch as Canadian and American beaver are used.


Thenative home range of the American beaver is North America where theybuild dams along river beds or streams. This is where theyparticularly build their homes and inhabit.


TheAmerican beavers pose a problem to the health of the human populationwhen they inhabit at close proximity. There are several diseases thathave been associated with their inhabitants or linked to themdirectly. A pathogenic intestinal parasite called Giardia limbia canbe transmitted to the water system by the beaver through its waste(Hilfiker, 2007). Hence the lack of treatment facilities like meshfiltrations and chlorination may contribute to the spread.

Question4, a)

Inthe non-ecological native regions the American beavers are considereda serious invasive species. This is because in their behavioralcharacteristics of building dams, they cause massive tree destruction(Richard, 2007). And there are usually great efforts to eradicatethem. Environmental damage is due to the drastically differentecosystem. There is normally no ecological impact or reason for theponds that are created by the beavers. This non-ecological inhabitantis in contrast to their native that is characterized by wetlandforming. Moreover these non-ecological inhabitants do not posses thebeaver’s large and native predators. Thus the ecosystem isimbalanced and severely damaged.

Question4 b)

Beaverpelts led to development and advancement of the fur industries.Beaver pelts were shipped around the world by many large companies.These beaver pelts have led to manufacturing of fashion goods andmost particularly the far coats. In 1998 a beaver pelts was estimatedto be valued at $15.13. Moreover the statewide value sale of beaverpelts in Virginia was estimated to be $87,909.34 (Helgen, 2005). Inaddition beavers are economically valued for their oily secretions.


Toleranceand preventive measures


Answeredbelow (References)

Question6, References

HelgenK. (2005). MammalSpecies of the World: A Taxonomic and Geographic Reference.Baltimore. Johns Hopkins University Press.

HilfikerL. (2007). Beavers,Water, Wildlife and History.New York. Windswept Press

RichardW. (2007). Ecology,Conservationand Productive Management.California. University of California Press