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Invasive Species

Filter Total Items: 12

Invasive Blue Catfish Science to Support Conservation and Fisheries Management

Dietary analyses, health, and reproduction of blue catfish in tributaries of the Chesapeake Bay inform ecosystem impacts and mitigation strategies for this aquatic nuisance species.
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Invasive Blue Catfish Science to Support Conservation and Fisheries Management

Dietary analyses, health, and reproduction of blue catfish in tributaries of the Chesapeake Bay inform ecosystem impacts and mitigation strategies for this aquatic nuisance species.
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Eastern Ecological Science Center partnership with Atlantic States Marine Fisheries Commission

Collaboration between the world-class expertise of USGS scientists, the Atlantic States Marine Fisheries Commission’s Science Program, and state and federal fishery agencies demonstrates the power of partnerships to solve seemingly-insurmountable problems in sustainable and cooperative management of Atlantic coastal fisheries.
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Eastern Ecological Science Center partnership with Atlantic States Marine Fisheries Commission

Collaboration between the world-class expertise of USGS scientists, the Atlantic States Marine Fisheries Commission’s Science Program, and state and federal fishery agencies demonstrates the power of partnerships to solve seemingly-insurmountable problems in sustainable and cooperative management of Atlantic coastal fisheries.
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Novel approach using flocculation to concentrate edna to search for early invasions of specific aquatic invasive species

Early detection systems for aquatic nuisance species have been improved by the advancement of polymerase chain reactions that amplify DNA sequences for decoding.
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Novel approach using flocculation to concentrate edna to search for early invasions of specific aquatic invasive species

Early detection systems for aquatic nuisance species have been improved by the advancement of polymerase chain reactions that amplify DNA sequences for decoding.
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Establishing Molecular Methods to Quantitatively Profile Stomach Diet Items of Fish—Application to the Invasive Blue Catfish (Ictalurus furcatus)

USGS scientists are collaborating with the Maryland Department of Natural Resources (MDDNR) to develop and evaluate a genetic assay for blue catfish fish diets that will allow us to design a cost-effective monitoring program for determining the diet of wild fish.
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Establishing Molecular Methods to Quantitatively Profile Stomach Diet Items of Fish—Application to the Invasive Blue Catfish (Ictalurus furcatus)

USGS scientists are collaborating with the Maryland Department of Natural Resources (MDDNR) to develop and evaluate a genetic assay for blue catfish fish diets that will allow us to design a cost-effective monitoring program for determining the diet of wild fish.
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Mycobacteriosis among northern snakehead fish in the Potomac River

Mycobacteriosis among northern snakehead fish in the Potomac River
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An Evaluation of the Toxicity of Potassium Chloride, Active Compound in the Molluscicide Potash, on Salmonid Fish and Their Forage Base

Potash, with the active ingredient potassium chloride (KCl) is a chemical that is currently being evaluated for potential use as a molluscicide to combat invasive zebra mussels and quagga mussels in Western United States waters.
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An Evaluation of the Toxicity of Potassium Chloride, Active Compound in the Molluscicide Potash, on Salmonid Fish and Their Forage Base

Potash, with the active ingredient potassium chloride (KCl) is a chemical that is currently being evaluated for potential use as a molluscicide to combat invasive zebra mussels and quagga mussels in Western United States waters.
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Development of a Multimetric Index for Integrated Assessment of Salt Marsh Condition in the Northeast Coastal and Barrier Network

Salt marsh ecosystems along all US coastlines have been altered, degraded, and destroyed by human activities, including ditching and drainage of the marsh platform, tidal restrictions, discharge of pollutants, and introduction of invasive species. The National Park Service conducts long-term monitoring of salt marsh vegetation and nekton (fish and free-swimming crustaceans) to provide information...
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Development of a Multimetric Index for Integrated Assessment of Salt Marsh Condition in the Northeast Coastal and Barrier Network

Salt marsh ecosystems along all US coastlines have been altered, degraded, and destroyed by human activities, including ditching and drainage of the marsh platform, tidal restrictions, discharge of pollutants, and introduction of invasive species. The National Park Service conducts long-term monitoring of salt marsh vegetation and nekton (fish and free-swimming crustaceans) to provide information...
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Disease and Environmental Stress

Disease may be caused by infectious agents, nutritional imbalances, physiological or genetically-based abnormalities, and suboptimal environmental conditions, acting either alone or in combination with other factors. In many instances, environmental stressors may merge forces with an infectious agent or some other non-infectious factor to produce or exacerbate a state of disease. By studying...
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Disease and Environmental Stress

Disease may be caused by infectious agents, nutritional imbalances, physiological or genetically-based abnormalities, and suboptimal environmental conditions, acting either alone or in combination with other factors. In many instances, environmental stressors may merge forces with an infectious agent or some other non-infectious factor to produce or exacerbate a state of disease. By studying...
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Giant African Land Snail

Originally from East Africa, the giant African land snail (Achatina fulica), has been established throughout the Indo-Pacific Basin, including the Hawaiian Islands. Since 2011, these snails have been found in Miami, Florida. Although the current range is limited to the southern latitudes of Florida, this snail can withstand freezing and go into hibernation for as much as a year. This allows them...
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Giant African Land Snail

Originally from East Africa, the giant African land snail (Achatina fulica), has been established throughout the Indo-Pacific Basin, including the Hawaiian Islands. Since 2011, these snails have been found in Miami, Florida. Although the current range is limited to the southern latitudes of Florida, this snail can withstand freezing and go into hibernation for as much as a year. This allows them...
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Invasive pathogens

Streamside salamanders such as this one are susceptible to invasive fungal pathogens of the genus Batrachochytrium. Two types of emerging fungal agents, B. dendrobatidis and B. salamandrivorans have been identified as serious risks to our amphibian populations.
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Invasive pathogens

Streamside salamanders such as this one are susceptible to invasive fungal pathogens of the genus Batrachochytrium. Two types of emerging fungal agents, B. dendrobatidis and B. salamandrivorans have been identified as serious risks to our amphibian populations.
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Hierarchical Models for Estimation of Population Parameters

The Challenge: Much of wildlife research consists of the description of variation in data. Some of the variation results from spatial and temporal change in populations, while some results from biologically irrelevant sampling variation induced by the process of data collection. Distinguishing relevant from irrelevant variation is the first task of statistical analysis, but the job does not end...
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Hierarchical Models for Estimation of Population Parameters

The Challenge: Much of wildlife research consists of the description of variation in data. Some of the variation results from spatial and temporal change in populations, while some results from biologically irrelevant sampling variation induced by the process of data collection. Distinguishing relevant from irrelevant variation is the first task of statistical analysis, but the job does not end...
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Structured Decision Making: Methods, Applications, and Capacity-Building

The Challenge: The field of decision analysis is a rich and mature discipline that provides robust methods for helping decision makers understand the nature of their decisions, involve stakeholders and scientists in appropriate steps of the process, and develop transparent records for the public. The use of these structured approaches is emerging in natural resource management, and there is strong...
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Structured Decision Making: Methods, Applications, and Capacity-Building

The Challenge: The field of decision analysis is a rich and mature discipline that provides robust methods for helping decision makers understand the nature of their decisions, involve stakeholders and scientists in appropriate steps of the process, and develop transparent records for the public. The use of these structured approaches is emerging in natural resource management, and there is strong...
Learn More