Pat Mazik, PhD (Former Employee)
Science and Products
Filter Total Items: 24
The effects of swimming exercise and dissolved oxygen on growth performance, fin condition and precocious maturation of early-rearing Atlantic salmon Salmo salar The effects of swimming exercise and dissolved oxygen on growth performance, fin condition and precocious maturation of early-rearing Atlantic salmon Salmo salar
Swimming exercise, typically measured in body-lengths per second (BL/s), and dissolved oxygen (DO), are important environmental variables in fish culture. While there is an obvious physiological association between these two parameters, their interaction has not been adequately studied in Atlantic salmon Salmo salar. Because exercise and DO are variables that can be easily manipulated in...
Authors
Thomas Waldrop, Steven T. Summerfelt, Patricia M. Mazik, Christopher Good
Micronuclei and other erythrocyte nuclear abnormalities in fishes from the Great Lakes Basin, USA Micronuclei and other erythrocyte nuclear abnormalities in fishes from the Great Lakes Basin, USA
Biological markers (biomarkers) sensitive to genotoxic and mutagenic contamination in fishes are widely used to identify exposure effects in aquatic environments. The micronucleus assay was incorporated into a suite of indicators to assess exposure to genotoxic and mutagenic contamination at five Great Lakes Areas of Concern (AOCs), as well as one non-AOC (reference) site. The assay...
Authors
Ryan P. Braham, Vicki S. Blazer, Cassidy H. Shaw, Patricia M. Mazik
Transcriptome discovery in non-model wild fish species for the development of quantitative transcript abundance assays Transcriptome discovery in non-model wild fish species for the development of quantitative transcript abundance assays
Environmental studies increasingly identify the presence of both contaminants of emerging concern (CECs) and legacy contaminants in aquatic environments; however, the biological effects of these compounds on resident fishes remain largely unknown. High throughput methodologies were employed to establish partial transcriptomes for three wild-caught, non-model fish species; smallmouth bass
Authors
Cassidy M. Hahn, Luke R. Iwanowicz, Robert S. Cornman, Patricia M. Mazik, Vicki S. Blazer
Impact of carbon dioxide level, water velocity, and feeding regimen on growth and fillet attributes of cultured rainbow trout (Oncorhynchus mykiss) Impact of carbon dioxide level, water velocity, and feeding regimen on growth and fillet attributes of cultured rainbow trout (Oncorhynchus mykiss)
Production and management variables such as carbon dioxide (CO2) level, water velocity, and feeding frequency influence the growth and fillet attributes of rainbow trout (Oncorhynchus mykiss), as well as cost of production. More information is needed to determine the contributions of these variables to growth and fillet attributes to find the right balance between input costs and fish...
Authors
Patricia M. Mazik, P. M. Mazik, P. B. Kenney, J.T Silverstein
Assessment of general health of fishes collected at selected sites in the Great Lakes Basin In 2012 Assessment of general health of fishes collected at selected sites in the Great Lakes Basin In 2012
During the past decade, there has been a substantive increase in the detection of “emerging contaminants”, defined as a new substance, chemical, or metabolite in the environment; or a legacy substance with a newly expanded distribution, altered release, or a newly recognized effect (such as endocrine disruption). Emerging contaminants include substances such as biogenic hormones (human...
Authors
Patricia M. Mazik, Ryan P. Braham, Cassidy M. Hahn, Vicki Blazer
River mainstem thermal regimes influence population structuring within an Appalachian brook trout population River mainstem thermal regimes influence population structuring within an Appalachian brook trout population
Brook trout (Salvelinus fontinalis) often exist as highly differentiated populations, even at small spatial scales, due either to natural or anthropogenic sources of isolation and low rates of dispersal. In this study, we used molecular approaches to describe the unique population structure of brook trout inhabiting the Shavers Fork watershed, located in eastern West Virginia, and...
Authors
Aaron W. Aunins, J. Todd Petty, Tim L. King, Mariya Schilz, Patricia M. Mazik
Non-USGS Publications**
Mazik, P.M., R. P. Braham, C. M. Hahn, and V.S. Blazer. 2015. Assessment of general and reproductive health of fishes at selected sites in the Great Lakes Basin in 2012. Department of Interior, Fish and Wildlife Service, Cooperator Science Series FWS/CSS-112-2015, Washington, D.C.
Aunins, A.W., J.T. Petty, T.L. King, M. Schilz and P.M Mazik, River mainstem thermal regimes influence population structuring within an appalachian brook trout population. Conserv Genet (2015) 16: 15. doi:10.1007/s10592-014-0636-6
Drew R. Ekman, Gerald T. Ankley, Vicki S. Blazer, Timothy W. Collette, Natàlia Garcia-Reyero, Luke R. Iwanowicz, Zachary G. Jorgenson, Kathy E. Lee, Pat M. Mazik, David H. Miller, Edward J. Perkins, Edwin T. Smith, Joseph E. Tietge and Daniel L. Villeneuve (2013). ENVIRONMENTAL REVIEWS AND CASE STUDIES: Biological Effects–Based Tools for Monitoring Impacted Surface Waters in the Great Lakes: A Multiagency Program in Support of the Great Lakes Restoration Initiative. Environmental Practice, 15, pp 409-426. doi:10.1017/S1466046613000458.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 24
The effects of swimming exercise and dissolved oxygen on growth performance, fin condition and precocious maturation of early-rearing Atlantic salmon Salmo salar The effects of swimming exercise and dissolved oxygen on growth performance, fin condition and precocious maturation of early-rearing Atlantic salmon Salmo salar
Swimming exercise, typically measured in body-lengths per second (BL/s), and dissolved oxygen (DO), are important environmental variables in fish culture. While there is an obvious physiological association between these two parameters, their interaction has not been adequately studied in Atlantic salmon Salmo salar. Because exercise and DO are variables that can be easily manipulated in...
Authors
Thomas Waldrop, Steven T. Summerfelt, Patricia M. Mazik, Christopher Good
Micronuclei and other erythrocyte nuclear abnormalities in fishes from the Great Lakes Basin, USA Micronuclei and other erythrocyte nuclear abnormalities in fishes from the Great Lakes Basin, USA
Biological markers (biomarkers) sensitive to genotoxic and mutagenic contamination in fishes are widely used to identify exposure effects in aquatic environments. The micronucleus assay was incorporated into a suite of indicators to assess exposure to genotoxic and mutagenic contamination at five Great Lakes Areas of Concern (AOCs), as well as one non-AOC (reference) site. The assay...
Authors
Ryan P. Braham, Vicki S. Blazer, Cassidy H. Shaw, Patricia M. Mazik
Transcriptome discovery in non-model wild fish species for the development of quantitative transcript abundance assays Transcriptome discovery in non-model wild fish species for the development of quantitative transcript abundance assays
Environmental studies increasingly identify the presence of both contaminants of emerging concern (CECs) and legacy contaminants in aquatic environments; however, the biological effects of these compounds on resident fishes remain largely unknown. High throughput methodologies were employed to establish partial transcriptomes for three wild-caught, non-model fish species; smallmouth bass
Authors
Cassidy M. Hahn, Luke R. Iwanowicz, Robert S. Cornman, Patricia M. Mazik, Vicki S. Blazer
Impact of carbon dioxide level, water velocity, and feeding regimen on growth and fillet attributes of cultured rainbow trout (Oncorhynchus mykiss) Impact of carbon dioxide level, water velocity, and feeding regimen on growth and fillet attributes of cultured rainbow trout (Oncorhynchus mykiss)
Production and management variables such as carbon dioxide (CO2) level, water velocity, and feeding frequency influence the growth and fillet attributes of rainbow trout (Oncorhynchus mykiss), as well as cost of production. More information is needed to determine the contributions of these variables to growth and fillet attributes to find the right balance between input costs and fish...
Authors
Patricia M. Mazik, P. M. Mazik, P. B. Kenney, J.T Silverstein
Assessment of general health of fishes collected at selected sites in the Great Lakes Basin In 2012 Assessment of general health of fishes collected at selected sites in the Great Lakes Basin In 2012
During the past decade, there has been a substantive increase in the detection of “emerging contaminants”, defined as a new substance, chemical, or metabolite in the environment; or a legacy substance with a newly expanded distribution, altered release, or a newly recognized effect (such as endocrine disruption). Emerging contaminants include substances such as biogenic hormones (human...
Authors
Patricia M. Mazik, Ryan P. Braham, Cassidy M. Hahn, Vicki Blazer
River mainstem thermal regimes influence population structuring within an Appalachian brook trout population River mainstem thermal regimes influence population structuring within an Appalachian brook trout population
Brook trout (Salvelinus fontinalis) often exist as highly differentiated populations, even at small spatial scales, due either to natural or anthropogenic sources of isolation and low rates of dispersal. In this study, we used molecular approaches to describe the unique population structure of brook trout inhabiting the Shavers Fork watershed, located in eastern West Virginia, and...
Authors
Aaron W. Aunins, J. Todd Petty, Tim L. King, Mariya Schilz, Patricia M. Mazik
Non-USGS Publications**
Mazik, P.M., R. P. Braham, C. M. Hahn, and V.S. Blazer. 2015. Assessment of general and reproductive health of fishes at selected sites in the Great Lakes Basin in 2012. Department of Interior, Fish and Wildlife Service, Cooperator Science Series FWS/CSS-112-2015, Washington, D.C.
Aunins, A.W., J.T. Petty, T.L. King, M. Schilz and P.M Mazik, River mainstem thermal regimes influence population structuring within an appalachian brook trout population. Conserv Genet (2015) 16: 15. doi:10.1007/s10592-014-0636-6
Drew R. Ekman, Gerald T. Ankley, Vicki S. Blazer, Timothy W. Collette, Natàlia Garcia-Reyero, Luke R. Iwanowicz, Zachary G. Jorgenson, Kathy E. Lee, Pat M. Mazik, David H. Miller, Edward J. Perkins, Edwin T. Smith, Joseph E. Tietge and Daniel L. Villeneuve (2013). ENVIRONMENTAL REVIEWS AND CASE STUDIES: Biological Effects–Based Tools for Monitoring Impacted Surface Waters in the Great Lakes: A Multiagency Program in Support of the Great Lakes Restoration Initiative. Environmental Practice, 15, pp 409-426. doi:10.1017/S1466046613000458.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.