March 26, 2018
Northeast Fisheries Observer Program bycatch data from 1989 to 2013 was Atlantic sturgeon, targeted for their valuable caviar, were first protected from commercial fishing in 1996 after studies showed their numbers had declined dramatically, pushing them to the brink of extinction. If sturgeon are recovering here, then they’re likely recovering in other rivers as well.”.
Data is downloaded monthly from each receiver to detect movement of Atlantic sturgeon tagged with acoustic telemetry tags. Atlantic Sturgeon aggregations and migration routes along the coast of Long Island overlap with commercial fishing activities that may lead to incidental take in nondirected fisheries. During the aggregation periods (May, June, September, and October) in known aggregation areas, catches were an order of magnitude higher than in other areas and months of the year. As part of a multi-state collaborative effort, the Division has partnered with several states to develop a multi-year effort directed at providing state, federal, and regional management authorities with information necessary to successfully conserve and ultimately restore the population of sturgeon in the mid-Atlantic region. Trenton, NJ 08625-0402
“We thought they were extinct there,” Peterson said, but earlier this year, while working on a new project for the U.S. Navy, his research team captured more than 10 young juveniles he believes were born in the St. Mary’s River. The additional coverage allows for greater detection of Atlantic sturgeon and provides the ability to monitor immigration and emigration from the Delaware Bay. Now, reports Agence France-Presse (AFP), new research has identified a well-preserved fish recovered from the Gribshunden’s pantry as a rare Atlantic sturgeon. Peterson is launching a three-year project to study the issue. | links
department: njdep
For a seventh year, 19 receivers have been set in water depths generally less than 20 feet. Researchers at Lund University in Sweden can now reveal what the Danish King Hans had planned to offer when laying claim to the Swedish throne in 1495: a two-meter-long Atlantic sturgeon… Despite these issues, simulations based on life-history information and the Ne estimates suggest that if ongoing management Measures are effective, contemporary levels of Population genetic diversity are likely to be retained over the next century.
Trawling bycatch contained primarily subadult Atlantic Sturgeon and is highest during the Summer Flounder Paralichthys dentatus fishery in New York State waters. Receiver Location Chart. On March 23, 2018, the NJ Division of Fish and Wildlife (Division) deployed acoustic receivers in the Delaware Bay to track migration patterns of Atlantic sturgeon. Peterson’s project will focus on the Ogeechee, Satilla and Altamaha rivers because these three Georgia waterways are considered the “barometer of recovery,” Peterson said. The online newspaper for the University of Georgia community, Research news from across the University of Georgia, © University of Georgia, Athens, GA 30602, Today’s top news from the University of Georgia, Warnell School of Forestry and Natural Resources, Employees ensure classrooms are disinfected daily, Victor Wilson to deliver Commencement address, UGA records its lowest number of COVID-19 cases this…, Grants to assist first-gen, low-income students, Student-designed satellite launch delayed. The National Marine Fisheries Service listed them as an endangered species in 2012, but that decision has been controversial and unpopular, Peterson said, because of the strict rules in place that commercial fisheries must follow if one is accidentally caught in a net and because of the detailed management plans state agencies must enact to deal with situations involving the Atlantic sturgeon bycatch. Ultimately, Peterson said, the results of this project should help improve the quality of the genetic database for the species. Biologists feared the fish’s populations had been lost from several of the state’s coastal waterways. Further complicating this controversy was the National Marine Fisheries Service’s decision to list some populations of Atlantic sturgeon as endangered while listing others as threatened. Athens, Ga. – University of Georgia researcher Doug Peterson will use a nearly $500,000 grant from the National Marine Fisheries Service in partnership with the Georgia Department of Natural Resources to determine how well Atlantic sturgeon are reproducing in Georgia rivers two years after the species was listed as endangered. Trawling overlaps spatially and temporally with identified Atlantic Sturgeon aggregation areas, while bycatch in gill nets targeted adult fish farther offshore in federal waters.
Dunton, K.J., A. Jordaan, D.O. Photo by Ryan Haggerty/USFWS . Scientists have already developed a DNA library for sturgeon, which they use to monitor the health of each population, but there could be some major flaws in the system. | government
The majority of Atlantic sturgeon were detected in May and were tagged by Stony Brook University.
The majority of Atlantic sturgeon were detected in May and were tagged by Delaware State University. Those fishing in inshore waters may encounter white buoys marked "NJDEP Research". “Although we’ve seen a significant increase in juvenile abundance in the Altamaha River, we remain very concerned about populations in the St. Mary’s, Satilla and Ogeechee rivers,” Peterson said. The project has three primary objectives, the first of which is to find out how many sturgeon are being born in the Ogeechee and Satilla rivers. A to Z | departments
Atlantic sturgeon are coming back in the Chesapeake Bay watershed.
division of fish & wildlife: home
Mean M-ratios were lower than expected at equilibrium in all three rivers (Delaware = 0.726, Hudson = 0.748, James = 0.664), indicative of genetic bottlenecks affecting all three spawning populations. For the first time in decades, he documented sturgeon reproduction in the St. Mary’s River.
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Populations of the ancient fish appear to be rebounding in some parts of the country, spurring discussion about whether the Atlantic sturgeon should be down listed from endangered status, said Peterson, a fisheries professor in UGA’s Warnell School of Forestry and Natural Resources.
MSA estimated that the New York Bight Distinct Population Segment (Hudson River and Delaware River) contributed 83–90 % of individuals to the marine aggregations and the Chesapeake (James River) and Southeast Distinct Population Segments contributed 5.5–11 %. Atlantic sturgeon, one of the oldest and largest fish on earth (growing upward of 14 feet long and weighing more than 800 pounds) were once found in huge numbers along the Atlantic Coast and coastal rivers from Canada to Florida.
Wirgin, a well-known sturgeon genetics expert, will analyze the DNA samples Peterson takes from sturgeon that his team captures in Georgia’s rivers. Reports of sturgeon sightings and interactions are important to this research; please use the Sturgeon Report Form.
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Peterson is working on the project with Isaac Wirgin, associate professor in the Department of Environmental Medicine at New York University School of Medicine.
“Unfortunately, that DNA library may be corrupted because it was mostly constructed using tissue samples from adult sturgeon,” he said. f&w
Thus, understanding the distribution and movement of Atlantic Sturgeon in relation to commercial fisheries can help management agencies determine impacts and develop bycatch mitigation measures.
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