The Spread And Continued Reproduction Of The Northern Snakehead
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The Problem Domain
The spread and continued reproduction of the Northern Snakehead in the Potomac river has been and will continue to be a threat to the integrity of the local ecosystem. The Northern Snakehead is causing a disturbance in the local ecosystem. These fish need to either be removed from the ecosystem or their spread halted. Since their discovery in Crofton, Maryland, drastic measures have been taken in the past to rapidly eradicate this species regardless of lasting effects. Most of the previous solutions include dumping large quantities of poison, draining bodies of water, and encouraging fishing. In many cases this has caused bodies of water to be unuseable for extended periods of time. It is for these reasons we would like…show more content… Because of this, Rayner & Creese suggest removing native fish, draining when possible, and clearing vegetation, to ensure maximum effectiveness. They also suggest ensuring that there is sufficient poison such that the final amount in the water is enough to kill the fish .
The diminishing amounts of poison in the local waterway, by the river flowing, is something that must be carefully considered. The article is promising in that it suggests that the poison flowing down river will be in a low enough concentration so as to not cause much harm. This also suggests that a controlled, continuous release will need to occur to maintain a lethal amount of poison on the targeted portion of the river.
Potency of Rotenone on Other Species
The Public Library of Science, PLOS, published a research article in 2015 in PLOS|One, which covers experiments done with rotenone and its effect at different concentrations over a period of 18 hours. This article, titled “An Assessment of the Effect of Rotenone on Non-Target Aquatic Fauna,” was authored by Dalu, Wasserman, Jordaan, Froneman, and Weyl. These people are members of the Department of Zoology and Entomology of Rhodes University, South African Institute for Aquatic Biodiversity, Centre for Invasion Biology, and Scientific Services Department in South Africa. Dalu et al. performed a experiments in water systems that were isolated from other waterways. They compared a control group with no poison in the