Asian Carp and eDNA
In 2009 a team of scientists from the University of Notre Dame and The Nature Conservancy (TNC) discovered that two species of highly invasive Asian Carp were much closer to the Great Lakes than federal and state officials had realized. Those two species, bighead carp and silver carp, have already done extensive environmental damage to the Illinois River—and much of the Mississippi River—by completely altering the food web in sections of those two major watersheds. There has been enormous concern throughout the region that if Asian carp entered the Great Lakes they could severely impair the lakes’ $7 billion annual sport and commercial fishing industries.
Scientists from Notre Dame and The Nature Conservancy located the Asian carp invasion through a cutting-edge technique called “environmental DNA” or “eDNA.” From the summer of 2009 through May of 2010, those scientists collected and analyzed more than 1,000 two-liter water samples from the Chicago Sanitary & Ship Canal, as well as other water bodies in the Chicago metropolitan area. Then, using a combination of high-tech genetic tools, they sifted those samples to find traces of eDNA from all sorts of species, including Asian carp.
In addition to showing that the invasive fish were much closer to the Great Lakes than people believed, the research showed that eDNA is superior to traditional methods for locating and monitoring aquatic species invasions. While so far the eDNA technology has only been used on alien species like Asian carp, Notre Dame’s scientists believe that the eDNA methodology has strong promise in endangered species detection and monitoring as well. The scientists’ work has now been expanded to a search for Asian carp eDNA throughout large swaths of the Great Lakes watershed.
January 09, 2015 • Author: Alex Gumm • Categories: Asian Carp and eDNA
At least one postdoctoral research position is available to pursue collaborative projects in conservation biology that would inform the management and policy of aquatic invasive species. The postdoctoral fellow(s) would join an interdisciplinary team of researchers, contribute to multiple projects, and would lead one or more subprojects involving: characterization of aquatic (freshwater and marine) communities with eDNA; quantitative analysis to forecast species dispersal and range changes caused by shipping and other vectors, and their interaction with other anthropogenic drivers (e.g., climate change); quantification of the ecological and economic impacts of invasions; and management and policy of invasive species at regional or global scales. Intellectual leadership would be expected, with the choice of topic(s) depending on experience and interests. Opportunities for collaborations exist with computer scientists, economists, and policy experts. The postdoc(s) would also assist with the organization and administration of projects, and contribute to on-going publication preparation. Funding is available for at least two years. Applicant screening is rolling; the desired start date is as soon as possible during spring 2015. Salary and benefits will be competitive. The postdoc would be supervised by David Lodge…
August 07, 2014 • Author: William G. Gilroy • Categories: Asian Carp and eDNA
If bighead and silver carp were to establish in Lake Erie, local fish biomass is not likely to change beyond observations recorded in the last three decades, according to a study published in the journal Conservation Biology on Thursday (Aug. 6) by a group of scientists from the University of Notre Dame, Resources for the Future, U.S. Forest Service, University of Michigan and the NOAA Great Lakes Environmental Laboratory.
July 09, 2014 • Author: William G. Gilroy • Categories: Asian Carp and eDNA , Environmental Genomics, and Transportation Networks, Climate Change, and the Spread of Invasive Species
June 17, 2014 • Author: Hannah Newman • Categories: Asian Carp and eDNA and Transportation Networks, Climate Change, and the Spread of Invasive Species
My quest to understand invasivorism began with a plate of lionfish tacos in Manhattan’s Lower East Side. The dish is a staple on the menu at Norman’s Cay
June 05, 2014 • Author: Eric Sharp • Categories: Asian Carp and eDNA
Like the crime scene investigators on television detective shows, fisheries scientists are relying on a technique called eDNA (environmental DNA) to search the Great Lakes for evidence of Asian carp that are too sparsely spread to be captured by electrofishing, netting or poisoning.…