why are there so many blue catfish in the bay

The blue catfish (Ictalurus furcatus) is the largest species of North American catfish, reaching a length of 165 cm (65 in) and a weight of 68 kg (150 lb).The typical length is about 25–46 in (64–117 cm). The Baltimore Sun. Initially introduced within fresh-water habitats, their range has extended into tidal, brackish estuarine habitats, which overlap many valuable commercial and recreational native species, including native white catfish. Many anglers like fishing for blue catfish because they are strong, savvy fish that are a good challenge. Now keep in mind that there are many different types of catfish depending on where in the world you are reading this. While blue catfish are offered for sale to the public at many stores and markets, the fishery is still developing. In the Chesapeake Bay, blue catfish are considered an invasive species. They are bottom-dwellers that prefer large rivers with deep channels, swift currents, and sandy bottoms. With so many available in the Bay, one solution could be that people should simply eat more catfish. From the Joint FAO/WHO Expert Consultation on Fats and Fatty Acids in Human Nutrition, 10-14. They have expanded their range and population so much that they are likely negatively affecting the Bay ecosystem because they eat so many native species, such as striped bass, blue crab, shad, herring, and Atlantic sturgeon. Available at: https://www.chesapeakebay.net/documents/workshop_catfish_report_final_pdf.pdf References The information presented has met UME peer review standards, including internal and external technical review. The fish can grow up to four and a half feet in length and weigh well more than 100 pounds. Blue catfish are highly productive and create high numbers of offspring each reproductive cycle. 8th Edition. They spawn once a year from late May into June, mostly in lower-salinity streams and smaller tributaries. Catching and eating this invasive species may contribute to needed population control. Like Most Fish Species, Blue Catfish Fillet is High in Protein and Low in Fat and Cholesterol Increasing commercial harvest and consumption of Chesapeake Bay Blue Catfish is one way to reduce numbers of this invasive fish in our Bay. An estimated 7,265 pounds of blue catfish were served on campus during the fall 2019 semester. Schloesser, R.W., Fabrizio, M. C., Latour, R. J. et al. “An extreme concern for me is the predation on crabs from the blue catfish,” says this Maryland native. Invasive Catfish in the Chesapeake Bay. The Blue Catfish has become an invasive species in the Chesapeake Bay because they are voraciously opportunistic predators that daily consume between 8-9% of their body weight (CBP, 2017). They have eight sensory barbels or … Blue Catfish of the Chesapeake Bay, on the other hand, are wild and feed on fish and shellfish. Blue catfish, the invasive fish with a big appetite that is overwhelming many Chesapeake Bay tributaries, is probably here to stay. VIMS Marine Resource Report No. U.S. Department of Health and Human Services and U.S. Department of Agriculture (USDHH and USDA, 2015). extension.umd.edu. The channel catfish can appear superficially similar to blue catfish, below. Concerns about their potential negative effects on native species have arisen due to the abundance of Blue Catfish and their ability to consume a broad prey base (Schloesser, et al., 2011). As a new predator in the ecosystem, Blue Catfish have been flourishing, invading the spawning waters of American Shad and other fish and shellfish native to the Bay’s tributaries, eating their eggs and endangering their survival. Tkacik C. and Dance S. (2019): As blue catfish multiply in Chesapeake Bay, watermen pursue new catch — and restaurants offer new delicacy. There is minimal bycatch. Most importantly, Blue Catfish fillets provide an abundance of healthy Omega-3 fatty acids (270 mg per serving), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) which are not found in land-based plants and animals products. They are primarily fished using hook and line. Siluriformes. Chesapeake Bay Invasive Catfish. Blue Catfish (Ictalurus furcatus) is the Largest Species of Catfish in North America They lower the risk of obesity. Chefs in Maryland and Virginia have led the way in popularizing Chesapeake Bay Blue Catfish and increasing consumer demand to help control the fish’s numbers. The blue catfish multiply so quickly that in a few weeks or months, the population of blue catfish can distort the normal ecological balance in the river. It has a slate blue body, a silver-white belly and four pairs of black, whisker-like barbels around its mouth. Since they are not picky about where they live, they have expanded their range to most of the major rivers of the Chesapeake Bay. Many anglers like fishing for blue catfish because they are strong, savvy fish that are a good challenge. This fact sheet aims to enhance public awareness of this invasive species as a new commercial fishery resource. General perception of catfish most often comes from farm-raised Channel Catfish. The fish can live to 20 years. These results confirm that the methyl mercury and PCBs levels of Chesapeake Bay Blue Catfish (15-36 inches long) are much lower than the FDA and EPA Safety Levels in Regulations and Guidance for commercial seafood (FDA, 2020). 2015–2020 Dietary Guidelines for Americans. The results show that the levels of mercury (˂0.47 ppm) and PCBs (0.001 to 0.856 ppm) in fish up to 41 inches are much lower than the FDA and EPA Safety Levels in Regulations and Guidance for methyl mercury (1.0 ppm) and PCBs (2.0 ppm) in commercial seafood (FDA, 2020). Virginia Wild-Caught Blue Catfish: Nutrition and Contaminant Analysis. 2017. Fax: (757) 886-0671, Problem displaying Facebook posts.Click to show errorfunction cffShowError() { document.getElementById("cff-error-reason").style.display = "block"; document.getElementById("cff-show-error").style.display = "none"; }. How Can You Help? Newport News, VA 23608, Phone: (757) 874-3474 That means that they can swim out of one river, into the more brackish Bay, and then into a different fairly fresh river. Eat Healthy and Support Virginia’s Economy While Enjoying Fresh Virginia Seafood, Facts About the Virginia Seafood Industry 2018, 2018 Virginia Commercial Landings Figures, Landings and Value of Top 20 Virginia Species 2017. cathyliu@umd.edu Channel cats make good table fare, especially in the spring and fall. Luellen et al (2018) analyzed mercury and PCBs levels for a total of 116 individual Chesapeake Bay Blue Catfish samples (31 from the James River and 44 from the Rappahannock River in VA, and 41 from the Potomac River in MD). These fast-growing aquatic goats can multiply into a dominant species, “representing up to 75 percent of total fish biomass,” Bill learned. Maryland announced a Blue Catfish purchasing initiative program in September 2019. More recently, Fisher (2020) conducted another study to investigate the methyl mercury and PCBs levels of Chesapeake Bay Blue Catfish (15 to 36 inches long) caught in the James’ River in Virginia. But in some areas, blue catfish can pose major challenges. This field is for validation purposes and should be left unchanged. Available at http://health.gov/dietaryguidelines/2015/guidelines/. But now, thanks to marketing efforts, particularly in Maryland, the commercial fishery for blue catfish in the Chesapeake Bay is ramping up. The Blue Catfish has become an invasive species in the Chesapeake Bay because they are voraciously opportunistic predators that daily consume between 8-9% of their body weight (CBP, 2017). For the general population, consumption of about 8 For PDF download click: Chesapeake Bay Blue Catfish UMD article. Like any kind of food, fish (including Chesapeake Bay Blue Catfish), may have potential risks associated with microbial and chemical contaminants. The Chesapeake Bay Program recently released its Invasive Catfish Management Strategy (PDF, 21 pages) to guide the management of blue catfish in the Bay, and an Invasive Catfish Workgroup meets frequently as well. This is good for developing the flavor but bad for the ecosystem of our Bay. There are no current published Bay-wide estimates of Blue Catfish, though it has been reported there may be more than 100 million in the Bay (Tkacik and Dance 2019). They are among the preferred prey of osprey and bald eagles. Their smooth skin lacks scales. The University of Maryland Extension Seafood Technology Specialist and Family and Consumer Science Educators have worked together to deliver education and demonstration programs to enhance public awareness on food safety and nutrition of invasive Blue Catfish and promote safe consumption. Amid concern that blue catfish could be spreading out of control in the Chesapeake Bay and Potomac River, there's an effort to stanch their population. Fillet portions (3 oz, 4oz, 8oz), whole-fish, gutted or un-gutted are available upon request from buyers. Blue catfish were introduced to a few rivers in the Chesapeake Bay watershed decades ago. As a wild product, there is some variation in size; normal size being 8 to 14 ounce fillet. In 2014, the number of blue catfish caught by commercial fishermen on the Potomac jumped nearly 62 percent, surpassing rockfish catches for the first time.. Due to lack of awareness among chefs and consumers, local watermen and processors have not been able to use this species at a high enough number to mitigate their impact on other Chesapeake Bay … Catches in the Virginia section of the Bay have also skyrocketed, the Chesapeake Bay Journal reports, reaching over 1.2 million pounds in 2014, up from just 150,328 pounds in 2010. Available at: https://www.baltimoresun.com/news/environment/bs-md-blue-catfish-20190603-story.html There is an amazing variety of catfish to be found, both farm-raised and wild. Older and larger fish can accumulate higher levels of PCBs and methyl-mercury chemical contaminants. In some parts of the Chesapeake Bay, catch and release of these fish is discouraged; instead, anglers are encouraged to remove and kill. A distinguishing feature of the blue catfish is that the anal fin margin, or edge, is straight as if it has been clipped with scissors. 2011). Virginia has created a new commercial fishery to target Blue Catfish using Low Frequency Electrofishing Technology (a generator supplied pulsed low frequency DC current that temporarily stuns the fish and causes them to surface to enable harvesting). Available at: https://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional/ But a new management plan says that with coordinated action — including ramped-up efforts to get people to develop an appetite for them — … They have been documented interfering with gill net fisheries, such as striped bass. Throughout many areas of the tidal Potomac and the James, you can spend many hours catching “little” cats, that is fish that run from five to almost 20 pounds, and either keep some for a meal or do the total catch and release gig. Abundant and commonly caught sizes of Chesapeake Bay Blue Catfish are 15-36 inches long and their fillets are safe to eat. There are true 100 lbs. Credit: Ian Vorster/VA Sea Grant If you catch a catfish in Chesapeake Bay, there's a good chance it's an invader from the Mississippi River drainage—probably a blue catfish, though it could be a less common flathead catfish. Internet Explorer lacks support for the features of this website. It is illegal to transport them from one body of water to another. Some of its closest relatives include the bullhead catfish, channel catfish, and more.It is the largest species of catfish … Blue catfish are native to the Mississippi, Missouri, Ohio, and Rio Grande river basins; they have been stocked for fishing in nearly 20 states. Koi (鯉, English: / ˈ k ɔɪ /, Japanese: ) or more specifically nishikigoi (錦鯉, [ɲiɕi̥kiꜜɡoi], literally "brocaded carp"), are colored varieties of the Amur carp (Cyprinus rubrofuscus) that are kept for decorative purposes in outdoor koi ponds or water gardens.. Koi is an informal name for the colored variants of C. rubrofuscus kept for ornamental purposes. Recreational fishermen in other areas, particularly those where blue catfish are native, also enjoy angling for these fish. Robert Fisher (Virginia Institute of Marine Science, Virginia Sea Grant ) Therefore, Blue Catfish should be thoroughly cooked and not eaten raw. In the Chesapeake Bay, blue catfish are a popular recreational fishery. (2011). Tidal Habitats Support Large Numbers of Invasive Blue Catfish in a Chesapeake Bay Subestuary. extension.umd.edu. Fisher, R.A. 2020. University programs, activities, and facilities are available to all without regard to race, color, sex, gender identity or expression, sexual orientation, marital status, age, national origin, political affiliation, physical or mental disability, religion, protected veteran status, genetic information, personal appearance, or any other legally protected class. Assessment of legacy and emerging contaminants in an introduced catfish and implications for the fishery. ounces per week of a variety of seafood, which help provide a minimum recommended consumption of 250 mg per day of EPA and DHA, is associated with reduced cardiac deaths among individuals with and without preexisting cardiovascular disease (WHO, 2008; USDHH and USDA, 2015). NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, Report a Stranded or Injured Marine Animal. Fact Sheet for Health Professionals. Estuaries and Coasts 41, 827–840 (2018). Blue Catfish (Ictalurus furcatus) Blue Catfish are long and often slender with a deeply forked tail. "Blue catfish eat everything, including each other, and there aren’t a whole lot of things that eat them once they get a certain size." The Blue Catfish has become an invasive species in the Chesapeake Bay because they are voraciously opportunistic predators that daily consume between 8-9% of their body weight (CBP, 2017). The massive fish, hooked last week on the Chattahoochee River, is the largest ever blue catfish caught in Georgia, the state’s Department of Natural Resources said Tuesday. As part of a healthy diet, eating fish and other seafood offer heart health benefits and lower the risk of obesity. University of Maryland Dining Services serves Chesapeake Bay Blue Catfish on campus and includes it in menus and promotions. Blue catfish are native to the Mississippi, Missouri, Ohio, and Rio Grande river basins. The numerous small lakes along the backwaters offer great fishing opportunities offering a variety of species such as bluegill, shellcracker, largemouth bass, hybrid striped bass, and mullet. Interim Summary of Conclusions and Dietary Recommendations on Total Fat & Fatty Acids. Babyboomers who burned their bras and smoked pot to Jimi Hendrix in the 60s & early 70s got a hair cut, a decent job, grew up and started to settle down and make Gen-Y babies. Virginia Seafood Handling, Safety, and Health, Virginia Seafood Guide – Sustainability in VIrginia, Virginia Aquaculture Oyster Growers Directory. Cooking is the best way to control microbial contaminants (bacteria, virus and parasite). Chesapeake Bay Blue Catfish: Invasive, but Delicious and Nutritious! Forked tail has a sweeter, more delicate flavor fish are long-lived and fast-growing it! 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