Introducing 

Prezi AI.

Your new presentation assistant.

Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.

Loading…
Transcript

Northern Snakeheads

Why Stop Invasive Species

It is important to not introduce new species into a non-native area because it will distort the natural balance in the ecosystem. It could result in the over consumption of one or many species of plant or animal which will then effect the diet of the native organisms that also feed on that same species. This form of disorder or unbalance in an ecosystem will either cause a rise or fall of population in the different affected species within that ecosystem. Normally these population changes do not have a positive impact, despite the initial intentions from when the alien species was first introduced.

Impact

  • The Northern Snakehead has the potential to cause environmental damage because ninety-percent of the northern Snakeheads' diet is other fish. It has the potential to reduce native fish populations exponentially. This would destroy some of the ecosystems that support many fish. The fishing industry would suffer greatly from the lack of native fish.

U.S. Fish and Wildlife Service

Used for sport fishing

Snakeheads have already caused millions of dollars in damage.

The northern snakehead has become a popular sport fish for fishermen.

Snakehead Territory

Efforts To Control

  • Comes from China, Korea, Russia.
  • Arrived in U.S. waters by importation for the live food fish market.

Profile

Red marks where Snakeheads can live.

All snakehead fish have been assigned an injurious wildlife status. The fish and viable eggs cannot be moved through importation or interstate transport due to the Federal Lacey Act. If a population of snakeheads are found efforts will be made to eradicate the fish. Professionals may use chemicals in the water to kill these fish, but it must be done so extremely carefully to not cause damage to any other species in the habitat. A permit is also necessary to use chemicals in the water, no matter what the reason is. If a fisher catches a snakehead fish they are highly encouraged to kill it, freeze it, and then report it for documentation. They are not supposed to release it back into the water. It is also illegal to keep a snakehead as a pet, buy one, or keep one in your possession without a permit. If a snakehead is legally caught while fishing it is only permitted to keep it as long as it is killed immediately.

the Northern Snakehead is a long thin fish with one long dorsal fin. It has a small anterior head with a large mouth extending beyond the eye. The mouth is full of large sharp teeth. It can grow up to 1 metre and weigh up to 8kg. It is coloured a golden brown with dark blotches on the sides. It is a fresh water fish and cannot tolerate any salinity in excess of ten parts per million. It is able to breathe air and thus survive on land for several days.

Alien Species Invasion: The Deep Economic Impact. (2010, March 21). Retrieved from http://www.investopedia.com/financial-edge/0310/alien-species-invasion-deep-economic-impact.aspx

Invasive Species: Aquatic Species - Northern Snakehead (Channa argus). (n.d.). Retrieved from http://www.invasivespeciesinfo.gov/aquatics/snakehead.shtml

Northern Snakehead | Ontario’s Invading Species Awareness Program. (n.d.). Retrieved from http://www.invadingspecies.com/invaders/fish/northern-snakehead/

Northern Snakehead. (n.d.). Retrieved from

http://www.anstaskforce.gov/spoc/snakehead.php

Not welcome in Canada: Preventing a Northern Snakehead invasion. (n.d.). Retrieved from http://www.dfo-mpo.gc.ca/science/publications/article/2009/01-06-09-eng.htm

http://www.invadingspecies.com/invaders/fish/northern-snakehead/

http://nas.er.usgs.gov/queries/factsheet.aspx?speciesid=2265

Learn more about creating dynamic, engaging presentations with Prezi