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Description of Work The USGS will communicate these results through coordinating site visits to demonstrate how technologies are applied. USGS will coordinate the communication approach across multiple projects to most efficiently demonstrate technologies and get the information to the stakeholders and managers. A demonstration of Asian carp control technologies occurred in August 2013 near Morris, Illinois at a backwater pond of the Illinois River. State and federal partners were invited to visit an application of the Integrated Pest Management approach to Asian carp control. Water guns, algal feeding attractant, acoustic fish tracking, and commercial fishing were implemented in a coordinated manner to reduce...
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Description of Work USGS researchers have determined the densities of the eggs as these develop, and how much time the bighead and silver carp require to begin swimming and migrating laterally from flowing water into nursery habitat. This information about egg transport requirements was used to create a Tributary Assessment Tool also referred to as the Fluvial Egg Drift Simulator (FluEgg) model. The development of this tool was a collaborative effort between USGS and the University of Illinois. The tool takes into account the hydraulics of a river (water velocity and dispersion rates) and the water temperature (affects egg and larvae development rates) in order to determine if a river is sufficiently long and the...
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Resource agencies are searching for effective methods to prevent the spread of invasive Silver Carp (Hypophthalmichthys molitrix) and Bighead Carp (Hypophthalmichthys nobilis), hereafter bigheaded carps, from the Mississippi River basin into the Laurentian Great Lakes. Elevating carbon dioxide (CO2) concentrations in water within locks and other pinch points is an approach being considered to reduce invasive fish passage. Laboratory studies have shown that bigheaded carps strongly avoid areas of elevated CO2 (Kates et al. 2012; Dennis et al. 2015). Similarly, telemetry studies found that CO2 can be used to exclude bigheaded carps from certain locations (Donaldson et al. 2016) and reduce upstream movement (Cupp et...
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