The northern snakehead effects on ecosystem is a very discussed about topic these days and the article details on the same throughout. We will now discuss in this article about how the northern snakehead has affected the ecosystem. The officials in the fisheries said that it would be too early if the rashes of the northern snakeheads are caught in the Potomac River as there will be upset in the balance of the ecosystem. In the Potomac River, the sixth snakehead was discovered by the Maryland department of natural resources. The Fort Belvoir which is near the Virginia side of the river will be analyzed by the biologists of the Maryland Department.
A biologist named Bob Lunsford from DNR said that it is not very easy to determine how the fish can alter the ecosystem of the river. He said that the effects of thepopulation of any species are not visible. The effects will vary from the fish dominating in a tidal basin to someone who can find one or more of them in a year. It cannot be determined even if there is a stable population of the fish. We should find the number of year classes with the number of the specimen.
Snakeheads are nothing but the fishes from the family of Channidae. They have two genera which are channa and parachanna and they are nearly 21 species of snakeheads. There are 18 species from the genera channa which are natives to Asia and the remaining three species are from the genre parachanna which are found in tropical Africa. Some of the snakeheads may tolerate low salinity waters,but most of them are freshwater fish. The snakeheads breathe the atmospheric air through the use of simple labyrinth organ. They have palates and well-tooted jaws,and they resemble bowfin. They survive as habitats with low dissolved oxygen because they can breathe air.
We can describe the northern snakehead as the voracious predator fishes, amphibians and freshwater crustaceans. The popular sports fish like largemouth bass could be out competed due to their feeding style. The biologists are very much concerned that they can introduce diseases and parasites to harm the native species. The northern snakehead with reproducing population was discovered in a pond in Crofton, Maryland.
The federal Lacey act will prohibit the import and interstate transport. The northern snakeheads are also found in Arkansas, New York and Pennsylvania. The biologists and the political leaders have learnt from the introductions in Maryland that the snakeheads can start reproducing easily once if they are released into a body of water. The vital information helped to motivate the state, local and federal officials in Arkansas to pursue the aggressive efforts. These efforts are made to eradicate the northern snakeheads from the irrigation ditches and avoid the spread into the watershed of the Mississippi River. The snakeheads are prevented from colonizing the Hudson River with the control measures provided by the officials in New York.
Moving ahead with the northern snakehead effects on ecosystem, it is unfortunate to say that the northern snakeheads have been firmly established over 60 miles of the Potomac River. The impacts of the ecosystem can be assessed to conduct the research continues with the partners of the wildlife service and the U.S. Fish. The feeding habits and distribution can be determined with the electro fishing surveys which is included in the research conducted in the Potomac River. The seasonal and daily behavior can be assessed by the telemetry tagging.
The effects on the growth of snakehead population on the recreational fishing can be accessed by the angler surveys. Reward tags have been placed by the wildlife service and U.S. Fish to estimate the size of population of the snakeheads in the Potomac River. They learn more about its tributaries and the way they move in the river. Biologists can determine more efficient methods of control and removal if they learn more about the behavior and biology of fish.
As per the GLB (Great Lakes Basin) ecosystem of fisheries and fish the sport and commercial fishery on the great lakes are values nearly 4 billion dollars annually. Among the world, Canada is the 6thbiggest exporter of seafood and fish products. The natives of eastern Asia are not allowed into the Canadian waters because they feel that their ecosystem will be destroyed by the fish which they call as their home. The ecosystem of the great lakes basin is fragile and unique. It is one of the largest freshwater ecosystems in the world.
The largest ratio of watershed area to the surface area is present at Lake Ontario. The great lakes basin includes parts from the Lake Ontario and Credit River which connect to the Atlantic Ocean. The combination of the fish species in the St. Lawrence River and great lakes came from the Atlantic and Mississippi drainages. The St. Lawrence and GLB are one of the six Atlantic-Arctic sub-zones. The patterns of the fish community are considered as the significant key to the biological criteria.
The methodology includes examining the distribution patterns of the fish communities and families. The dominant fish that are usually found in the Ontario fishery include yellow perch, white bass, lake trout, lake herring, rainbow smelt, white perch and pickerel. The fishery comprises a blend of introduced and native species,and some of them are re-stocked regularly. The common catches will consist of salmon, whitefish, pickerel and lake trout. The fishery is under threat primarily on the following three fronts like over fishing, invasive species and pollution. Many fishing opportunities are offered by the region’s inland waters.
The task force will work closely with Canada to restore and protect the lakes. The problem associated with the albacore tuna is that it has high mercury content and also high in selenium. Selenium is considered as a trace mineral which is essential for good health but is required only in small amounts. It is incorporated into proteins to produce the seleno proteins. It also helps significantly to prevent the cellular damage from the free radicals around.