Jennifer M Bayer (Former Employee)
Science and Products
Filter Total Items: 28
Effects of temperature on survival and development of early life stage Pacific and western brook lampreys Effects of temperature on survival and development of early life stage Pacific and western brook lampreys
We examined the effects of temperature (10, 14, 18, and 22??C) on survival and development of Pacific lampreys Lampetra tridentata and western brook lampreys L. richardsoni during embryological and early larval stages. The temperature for zero development was estimated for each species, and the response to temperature was measured as the proportion of individuals surviving to hatch...
Authors
M.H. Meeuwig, J.M. Bayer, J.G. Seelye
Upstream migration of Pacific lampreys in the John Day River, Oregon: Behavior, timing, and habitat use Upstream migration of Pacific lampreys in the John Day River, Oregon: Behavior, timing, and habitat use
Adult Pacific lamprey migration and habitat preferences for over-winter holding and spawning, and larval rearing in tributaries to the Columbia River are not well understood. The John Day River is one such tributary where larval and adult stages of this species have been documented, and its free-flowing character provided the opportunity to study migration of Pacific lampreys unimpeded...
Authors
T. Craig Robinson, J.M. Bayer
Morphology and aging precision of statoliths from larvae of Columbia river basin lampreys Morphology and aging precision of statoliths from larvae of Columbia river basin lampreys
The general morphology and precision associated with age determination of statoliths from larval Pacific lampreys Lampetra tridentata and western brook lampreys L. richardsoni found within the Columbia River basin were examined. Significant positive correlations were observed between the size of left and right statoliths from individuals. Principal components analysis indicated an...
Authors
M.H. Meeuwig, J.M. Bayer
Olfactory sensitivity of Pacific lampreys to conspecific bile acids Olfactory sensitivity of Pacific lampreys to conspecific bile acids
No abstract available
Authors
T.C Craig, J.M. Bayer, J.G. Seelye
Swimming performance and physiological responses to exhaustive exercise in radio-tagged and untagged Pacific lampreys Swimming performance and physiological responses to exhaustive exercise in radio-tagged and untagged Pacific lampreys
Populations of Pacific lamprey Lampetra tridentata have declined in the Columbia River basin. One factor that may have contributed to this reduction in population size is an excessive use of energy by adult lampreys as they negotiate fishways at dams during spawning migrations. To gain an understanding of the performance capacity of Pacific lampreys, we estimated the critical swimming...
Authors
M.G. Mesa, J.M. Bayer, J.G. Seelye
HPLC and ELISA analyses of larval bile acids from Pacific and western brook lampreys HPLC and ELISA analyses of larval bile acids from Pacific and western brook lampreys
Comparative studies were performed on two native lamprey species, Pacific lamprey (Lampetra tridentata) and western brook lamprey (Lampetra richardsoni) from the Pacific coast along with sea lamprey (Petromyzon marinus) from the Great Lakes, to investigate their bile acid production and release. HPLC and ELISA analyses of the gall bladders and liver extract revealed that the major bile...
Authors
S.-S. Yun, A.P. Scott, J.M. Bayer, J.G. Seelye, D.A. Close, W. Li
Non-USGS Publications**
**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: 28
Effects of temperature on survival and development of early life stage Pacific and western brook lampreys Effects of temperature on survival and development of early life stage Pacific and western brook lampreys
We examined the effects of temperature (10, 14, 18, and 22??C) on survival and development of Pacific lampreys Lampetra tridentata and western brook lampreys L. richardsoni during embryological and early larval stages. The temperature for zero development was estimated for each species, and the response to temperature was measured as the proportion of individuals surviving to hatch...
Authors
M.H. Meeuwig, J.M. Bayer, J.G. Seelye
Upstream migration of Pacific lampreys in the John Day River, Oregon: Behavior, timing, and habitat use Upstream migration of Pacific lampreys in the John Day River, Oregon: Behavior, timing, and habitat use
Adult Pacific lamprey migration and habitat preferences for over-winter holding and spawning, and larval rearing in tributaries to the Columbia River are not well understood. The John Day River is one such tributary where larval and adult stages of this species have been documented, and its free-flowing character provided the opportunity to study migration of Pacific lampreys unimpeded...
Authors
T. Craig Robinson, J.M. Bayer
Morphology and aging precision of statoliths from larvae of Columbia river basin lampreys Morphology and aging precision of statoliths from larvae of Columbia river basin lampreys
The general morphology and precision associated with age determination of statoliths from larval Pacific lampreys Lampetra tridentata and western brook lampreys L. richardsoni found within the Columbia River basin were examined. Significant positive correlations were observed between the size of left and right statoliths from individuals. Principal components analysis indicated an...
Authors
M.H. Meeuwig, J.M. Bayer
Olfactory sensitivity of Pacific lampreys to conspecific bile acids Olfactory sensitivity of Pacific lampreys to conspecific bile acids
No abstract available
Authors
T.C Craig, J.M. Bayer, J.G. Seelye
Swimming performance and physiological responses to exhaustive exercise in radio-tagged and untagged Pacific lampreys Swimming performance and physiological responses to exhaustive exercise in radio-tagged and untagged Pacific lampreys
Populations of Pacific lamprey Lampetra tridentata have declined in the Columbia River basin. One factor that may have contributed to this reduction in population size is an excessive use of energy by adult lampreys as they negotiate fishways at dams during spawning migrations. To gain an understanding of the performance capacity of Pacific lampreys, we estimated the critical swimming...
Authors
M.G. Mesa, J.M. Bayer, J.G. Seelye
HPLC and ELISA analyses of larval bile acids from Pacific and western brook lampreys HPLC and ELISA analyses of larval bile acids from Pacific and western brook lampreys
Comparative studies were performed on two native lamprey species, Pacific lamprey (Lampetra tridentata) and western brook lamprey (Lampetra richardsoni) from the Pacific coast along with sea lamprey (Petromyzon marinus) from the Great Lakes, to investigate their bile acid production and release. HPLC and ELISA analyses of the gall bladders and liver extract revealed that the major bile...
Authors
S.-S. Yun, A.P. Scott, J.M. Bayer, J.G. Seelye, D.A. Close, W. Li
Non-USGS Publications**
**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.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government