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John A Tix

Carbon dioxide (CO2) is under consideration as a chemical fish deterrent at pinch points in rivers (e.g., inside locks) to reduce unwanted fish passage. This study evaluated the behavioral responses of invasive round goby (Neogobius melanostomus) to dissolved CO2 in laboratory tanks. The goal of this project was to quantify CO2 concentrations that modify round goby behavior. More specifically, avoidance behavior (voluntary response) and loss of equilibrium (involuntary response) were quantified across 5, 15, and 25°C water temperatures. These data can be used to inform future field testing of CO2 as an invasive fish deterrent. Spreadsheets include data that were used to evaluate the efficacy of carbon dioxide (CO2)...
This data was collected to determine responses of red swamp crayfish and rusty crayfish to CO2-enriched water to determine the utility of CO2 as a crayfish control tool. Avoidance tests, emergence tests, and loss of equilibrium (LOE) tests were performed to determine crayfish behavior in CO2-enriched water. Avoidance data (TimeinChamber2.csv, Crossings.csv, FirstLastShuttle.csv, AvoidanceLengthsandWeights.csv) were collected on 20171220 through 20180214. CO2 was injected in one side of a choice chamber under light or dark conditions and 10oC or 24oC water temperature. Shuttle movements were recorded and used to determine the number of crossings from the CO2 injected side to the non-injected side, the CO2 concentration...
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This study evaluated carbon dioxide (CO2) injected into water as a possible behavioral stimulant to enhance capture and removal of invasive red swamp crayfish (RSC, Procambarus clarkii Girard, 1852) from a retention pond in southeastern Michigan. Objectives of this study were to (1) determine if target CO2 concentrations were attainable within the infested pond, and (2) determine if CO2 treatment was effective to push RSC towards shorelines or onto dry land where they could be collected and removed. Carbon dioxide was applied directly into one treatment pond (~2,500 m3) in Novi, MI. Two nearby ponds in Livonia, MI were used as untreated control ponds. Crayfish removal efficiency was evaluated in all ponds using...
Spreadsheets include data that was used to evaluate the efficacy of carbon dioxide (CO2) deterrence at different temperatures in invasive carps. There are 8 csv files and 2 folders containing text documents associated with this study.
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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