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Fish and Aquatic Species Conservation

Filter Total Items: 72

Fish locomotion and biomechanics as limiting and optimizing factors in fish passage

Swimming ability determines how well fish are able to access habitat, and is a fundamental design consideration for passing fish at dams, road crossings, etc. The purpose of this study plan is to improve understanding of how fish are able to negotiate zones of high velocity and turbulent flow, such as are found in fishways, culverts, as well as in natural areas. Swimming performance is limited by...
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Fish locomotion and biomechanics as limiting and optimizing factors in fish passage

Swimming ability determines how well fish are able to access habitat, and is a fundamental design consideration for passing fish at dams, road crossings, etc. The purpose of this study plan is to improve understanding of how fish are able to negotiate zones of high velocity and turbulent flow, such as are found in fishways, culverts, as well as in natural areas. Swimming performance is limited by...
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Effects of temperature and energy use on fish passage and spawning success of American shad

American Shad are the most numerous and economically important anadromous species on the east coast of the United States. Yet in many river systems their populations have experienced declines, primarily due to the impacts of dams and habitat loss. Although fish passage facilities have been constructed to mitigate the impacts of dams, many of these have not provided adequate passage success for...
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Effects of temperature and energy use on fish passage and spawning success of American shad

American Shad are the most numerous and economically important anadromous species on the east coast of the United States. Yet in many river systems their populations have experienced declines, primarily due to the impacts of dams and habitat loss. Although fish passage facilities have been constructed to mitigate the impacts of dams, many of these have not provided adequate passage success for...
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Genetic connectivity among regional populations of red tree corals (Primnoa pacifica) in the North Pacific Ocean

Knowledge of the degree to which populations are connected through larval dispersal is imperative to effective management, yet little is known about larval dispersal capability or population connectivity in Primnoa pacifica, an important habitat forming octocoral on the outer continental shelf and upper slope in the Gulf of Alaska. Red tree corals can reach massive size (up to 5m height and 7m...
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Genetic connectivity among regional populations of red tree corals (Primnoa pacifica) in the North Pacific Ocean

Knowledge of the degree to which populations are connected through larval dispersal is imperative to effective management, yet little is known about larval dispersal capability or population connectivity in Primnoa pacifica, an important habitat forming octocoral on the outer continental shelf and upper slope in the Gulf of Alaska. Red tree corals can reach massive size (up to 5m height and 7m...
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Genetic characterization of the clubshell species complex (Pleurobema clava and P. oviforme) for enhanced conservation

The diversity of freshwater mussels (family Unionidae) in the United States is unmatched in the rest of the world, yet this biodiversity is highly vulnerable, with more than 70% of recognized species considered to be either endangered, threatened, or of special concern. Most species inhabit limited ranges and have small (and/or often unknown) dispersal abilities due to reliance on specific host...
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Genetic characterization of the clubshell species complex (Pleurobema clava and P. oviforme) for enhanced conservation

The diversity of freshwater mussels (family Unionidae) in the United States is unmatched in the rest of the world, yet this biodiversity is highly vulnerable, with more than 70% of recognized species considered to be either endangered, threatened, or of special concern. Most species inhabit limited ranges and have small (and/or often unknown) dispersal abilities due to reliance on specific host...
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Deepwater Atlantic Habitats II: Continued Atlantic Research and Exploration in Deepwater Ecosystems with Focus on Coral, Canyon, and Seep Communities. Part II: Genetic Connectivity and Oceanomic Studies

This study utilizes genetics and genomics techniques to characterize biodiversity and genetic connectivity among deep-sea coral habitats and cold seeps in and near submarine canyons and will use environmental DNA techniques to characterize plankton diversity and to identify key contributors to carbon export from surface waters that sustain sensitive benthic communities. The proposed genetics and...
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Deepwater Atlantic Habitats II: Continued Atlantic Research and Exploration in Deepwater Ecosystems with Focus on Coral, Canyon, and Seep Communities. Part II: Genetic Connectivity and Oceanomic Studies

This study utilizes genetics and genomics techniques to characterize biodiversity and genetic connectivity among deep-sea coral habitats and cold seeps in and near submarine canyons and will use environmental DNA techniques to characterize plankton diversity and to identify key contributors to carbon export from surface waters that sustain sensitive benthic communities. The proposed genetics and...
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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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Climate change forecasts for eastern salmonids

Small streams in forests are likely to see dramatic shifts as global climate change influences air temperature and rain patterns. We have already seen warmer stream temperatures as air temperatures increase in summer in the Northeastern US. The intensity and duration of floods and droughts are also expected to magnify as future rain patterns shift. This project will evaluate how stream temperature...
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Climate change forecasts for eastern salmonids

Small streams in forests are likely to see dramatic shifts as global climate change influences air temperature and rain patterns. We have already seen warmer stream temperatures as air temperatures increase in summer in the Northeastern US. The intensity and duration of floods and droughts are also expected to magnify as future rain patterns shift. This project will evaluate how stream temperature...
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Use of next-generation sequencing for the dietary analyses of smallmouth bass (Micropterus dolomieu) stomach content

The USGS Leetown Science Center (USGS LSC) scientists are collaborating with the PADEP (SMB) to develop and evaluate a genetic assay for fish diets that will allow us to develop a cost-effective monitoring program for determining the diet of wild fish. We will test the utility of this method and, once fully developed, these methods could be generally applied in many other piscivorous species of...
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Use of next-generation sequencing for the dietary analyses of smallmouth bass (Micropterus dolomieu) stomach content

The USGS Leetown Science Center (USGS LSC) scientists are collaborating with the PADEP (SMB) to develop and evaluate a genetic assay for fish diets that will allow us to develop a cost-effective monitoring program for determining the diet of wild fish. We will test the utility of this method and, once fully developed, these methods could be generally applied in many other piscivorous species of...
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An ecosystem approach to assessing unconventional oil and gas impacts in aquatic ecosystems

The development of unconventional oil and gas (UOG) technology promises economic, societal and national security benefits. However, technological developments in this field have rapidly outpaced scientific studies on potential environmental effects. The effects of accidental UOG-related spills on environmental health are not adequately characterized, often occur in already ecological sensitive...
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An ecosystem approach to assessing unconventional oil and gas impacts in aquatic ecosystems

The development of unconventional oil and gas (UOG) technology promises economic, societal and national security benefits. However, technological developments in this field have rapidly outpaced scientific studies on potential environmental effects. The effects of accidental UOG-related spills on environmental health are not adequately characterized, often occur in already ecological sensitive...
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Developing and testing eDNA markers for the Federally endangered dwarf wedgemussel, Alasmidonta heterodon and other key freshwater mussel species

Dwarf wedgemussel is a federally endangered freshwater mussel with a historic range spanning the Atlantic coast. However, populations have dramatically declines over the last 30 years. Therefore, knowledge of current population distribution and abundance is critical to resource managers in order to monitor the species over time and to guide recovery actions. Manual survey efforts (snorkel or scuba...
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Developing and testing eDNA markers for the Federally endangered dwarf wedgemussel, Alasmidonta heterodon and other key freshwater mussel species

Dwarf wedgemussel is a federally endangered freshwater mussel with a historic range spanning the Atlantic coast. However, populations have dramatically declines over the last 30 years. Therefore, knowledge of current population distribution and abundance is critical to resource managers in order to monitor the species over time and to guide recovery actions. Manual survey efforts (snorkel or scuba...
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Ecological flow needs of freshwater mussels

Streamflow characteristics are rapidly changing in response to climate variability, water management practices, and a variety of other human water demands. Alterations in water quantity can have direct impacts on aquatic organisms (e.g., stranding, displacement, disruption of spawning), and can be especially detrimental to organisms with limited mobility. Freshwater mussels are one such group of...
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Ecological flow needs of freshwater mussels

Streamflow characteristics are rapidly changing in response to climate variability, water management practices, and a variety of other human water demands. Alterations in water quantity can have direct impacts on aquatic organisms (e.g., stranding, displacement, disruption of spawning), and can be especially detrimental to organisms with limited mobility. Freshwater mussels are one such group of...
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Metabarcoding of stomach contents from the Round Goby (Negobius melanostromus) in Pennsylvania

The Round Goby, Neogobius melanostomus, is a small benthic fish native to the Sea of Azov, the Caspian Sea, the Black Sea and the Sea of Marmara. The first round goby found in the Pennsylvania waters was in 1996. Since then, round gobies are now the dominant benthic fish in many of the tributary streams in the Pennsylvanian waters of Lake Erie, including French Creek. French Creek is also home to...
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Metabarcoding of stomach contents from the Round Goby (Negobius melanostromus) in Pennsylvania

The Round Goby, Neogobius melanostomus, is a small benthic fish native to the Sea of Azov, the Caspian Sea, the Black Sea and the Sea of Marmara. The first round goby found in the Pennsylvania waters was in 1996. Since then, round gobies are now the dominant benthic fish in many of the tributary streams in the Pennsylvanian waters of Lake Erie, including French Creek. French Creek is also home to...
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