Aquatic Ecosystem Health
Aquatic Ecosystem Health
The role of the Aquatic Ecosystem Health program is to conduct research to protect, mitigate, and enhance the health of aquatic ecosystems. Research conducted within the Program is focused on the following 3 areas of study, (1) controlling aquatic invasive species, (2) fisheries restoration, and (3) understanding the impacts of contaminants on aquatic ecosystems.
Filter Total Items: 87
Evaluation of the efficacy and impact on animal safety when using AQUI-S® 20E (10% eugenol) to sedate cool and warm freshwater-reared finfish during transport
The results from this study will provide data that is necessary to support the potential approval of a sedative that will allow hatcheries to transport fish more efficiently.
Method Transfer Study for the Analytical Method to Determine 17-Amethyltestosterone Concentrations in Fish Feed
The results from this study will provide data that is necessary to support the potential approval of a drug that will allow producers to raise fish more efficiently.
Determining exposure parameters that maximize eugenol residues in the fillet tissue and determining the sample times that will adequately characterize the depletion of eugenol residues from the fillet tissue of rainbow trout exposed to AQUI-S® 20E
The results from this study will provide the base for future human food safety studies that are required by the U.S. Food and Drug Administration to approve an immediate release fish sedative. These data will support the potential approval of an immediate release fish sedative that can be efficiently used by fishery managers throughout the U.S.
Depletion of emamectin benzoate residues from the fillet tissue of rainbow trout (Oncorhynchus mykiss) treated with SLICE®-medicated feed in recirculating and flow-through aquaculture systems
The results from this study may lead to an expansion of the SLICE® label allowing for treatment of freshwater-reared fish infested with copepods. Label expansion would enhance production on hatcheries throughout the United Sates.
Field Effectiveness of 35% PEROX-AID® (Hydrogen Peroxide) to Reduce Gyrodactylus sp. Infestation Density in Coolwater and Warmwater Finfish
Impact of UMESC Science The results from this study may lead to an expansion of the 35% PEROX-AID® label allowing for the use of the drug to control coolwater and warmwater finfish mortality associated with a parasitic infestation. Label expansion would enhance coldwater finfish production on all hatcheries throughout the United Sates.
Determine the effect of PARASITE-S® (formalin), administered to control mortality from saprolegniasis, on the nitrogen oxidation efficiency of the biofilters of recirculating aquaculture systems (RAS) for freshwater finfish
Impact of UMESC Science Data from this study is intended to support label expansion for PARASITE-S® allowing for the use of the drug to control mortality due to saprolegniasis infestations in all fish rearing systems, including recirculating aquaculture systems (RAS).
Increasing Efficiency and Throughput of eDNA
The results from this study will provide protocols for the collection, processing and analysis of environmental deoxyribonucleic acids (eDNA) samples for monitoring aquatic invasive species like Asian carp. These protocols have the potential to be used by fishery management agencies to monitor aquatic invasive species throughout the United States.
Develop Experimental Use Permits, Datasets and Develop Registration Plans for Sea Lamprey Pheromones in Compliance with United States and Canadian Biopesticide Regulations
The result of this technical assistance is critical to developing a lamprey pheromone as a tool to control lamprey populations in the Great Lakes. If lamprey populations are left uncontrolled, the effects lamprey would have on the fishery industry in the Great Lakes would be devastating.
Improving the Accuracy and Precision of Predictions of TFM-niclosamide Concentrations for Treatment of Sea Lamprey Spawning Tributaries
The results of this research may lead to a more efficient use of the lampricides used to control lamprey populations in the Great Lakes. If lamprey populations are left uncontrolled, the effects on commercial and sport fisheries in the Great Lakes would be devastating. The treatment of sea lamprey spawning tributaries with mixtures of the piscicides 3-trifluoromethyl-4-nitrophenol (TFM) and 2'5'...
Register New Lampricide Active Ingredients and End-use Formulations and Maintain Registered Products in Compliance with United States and Canadian Pesticide Regulations
The USGS Upper Midwest Environmental Sciences Center (UMESC) provides regulatory affairs assistance to the Great Lakes Fishery Commission (GLFC), U.S. Fish and Wildlife Service (FWS), Department of Fisheries and Oceans Canada (DFO), state and private partners in matters regarding numerous registrations of the lampricides TFM and niclosamide in the U.S. and Canada. The result of this technical...
Residue Levels of the Lampricides TFM and Niclosamide in Moribund Sea Lamprey Larvae Following Exposures to TFM and a TFM/1% Niclosamide Combination
Concerns regarding the exposure of wildlife to TFM and niclosamide that would result from the consumption of sea lamprey (Petromyzon marinus) larvae exposed to these chemicals has prompted a need to investigate uptake of these chemicals in larval lampreys. A study to address concerns regarding the exposure of the endangered common term during the treatment of the St. Marys River was completed in...
Forensic Markers of Lampricide Toxicity & Mortality in Non-Target Fishes
The pesticides 3-trifluoromethyl-4-nitrophenol (TFM) and niclosamide selectively target larval sea lampreys (Petromyzon marinus) because they have a much lower capacity to detoxify these lampricides by forming glucuronide conjugates compared to typical non-target fishes. Glucuronidation makes lampricides more water soluble and easier to excrete (Lech and Statham 1975; Kane et al. 1994). However...