Larry Brown (Former Employee)
Science and Products
Filter Total Items: 125
Assessing water source and channel type as factors affecting benthic macroinvertebrate and periphyton assemblages in the highly urbanized Santa Ana River Basin, California Assessing water source and channel type as factors affecting benthic macroinvertebrate and periphyton assemblages in the highly urbanized Santa Ana River Basin, California
The Santa Ana River basin is the largest stream system in Southern California and includes a densely populated coastal area. Extensive urbanization has altered the geomorphology and hydrology of the streams, adversely affecting aquatic communities. We studied macroinvertebrate and periphyton assemblages in relation to two categorical features of the highly engineered hydrologic system...
Authors
Carmen A. Burton, Larry R. Brown, Kenneth Belitz
Risk factors and declines in northern cricket frogs (Acris crepitans) Risk factors and declines in northern cricket frogs (Acris crepitans)
No abstract available.
Authors
V.R. Beasley, S. Faeh, B. Wikoff, C. Staehle, J. Eisold, D. Nichols, Rebecca A. Cole, A. Schotthoefer, M. Greenwell, L. Brown
Effect of sample handling on thiamine and thiaminolytic activity in alewife Effect of sample handling on thiamine and thiaminolytic activity in alewife
Alewives Alosa pseudoharengus were collected to evaluate handling and processing conditions that may affect the measurement of their thiamine-thiaminase content. Fish were captured by otter trawl, and reference samples of live fish were quick-frozen on dry ice immediately following capture. Other samples were placed on wet ice (4??C) or held in ambient lake water (21.5??C) for periods of...
Authors
G.M. Wright, S.B. Brown, L. R. Brown, K. Moore, M. Villella, J.L. Zajicek, D. E. Tillitt, J.D. Fitzsimons, D. C. Honeyfield
Thiamine and thiaminase status in forage fish of salmonines from Lake Michigan Thiamine and thiaminase status in forage fish of salmonines from Lake Michigan
Dietary sources of thiamine (vitamin B1) and thiamine-degrading enzymes (thiaminases) are thought to be primary factors in the development of thiamine deficiency among Great Lakes salmonines. We surveyed major forage fish species in Lake Michigan for their content of thiamine, thiamine vitamers, and thiaminase activity. Concentrations of total thiamine were similar (P ≤ 0.05) among most...
Authors
D. E. Tillitt, J.L. Zajicek, S.B. Brown, L. R. Brown, J.D. Fitzsimons, D. C. Honeyfield, M.E. Holey, G.M. Wright
Effectiveness of egg immersion in aqueous solutions of thiamine and thiamine analogs for reducing early mortality syndrome Effectiveness of egg immersion in aqueous solutions of thiamine and thiamine analogs for reducing early mortality syndrome
Protocols used for therapeutic thiamine treatments in salmonine early mortality syndrome (EMS) were investigated in lake trout Salvelinus namaycush and coho salmon Oncorhynchus kisutch to assess their efficacy. At least 500 mg of thiamine HCl/L added to egg baths was required to produce a sustained elevation of thiamine content in lake trout eggs. Thiamine uptake from egg baths was not...
Authors
S.B. Brown, L. R. Brown, M. Brown, K. Moore, M. Villella, J.D. Fitzsimons, B. Williston, D. C. Honeyfield, J. P. Hinterkopf, D. E. Tillitt, J.L. Zajicek, M. Wolgamood
Can diet-dependent factors help explain fish-to-fish variation in thiamine-dependent early mortality syndrome? Can diet-dependent factors help explain fish-to-fish variation in thiamine-dependent early mortality syndrome?
To provide insight into the reasons why offspring of certain salmonine females exhibit early mortality syndrome (EMS) in the Great Lakes whereas others do not, we measured the egg concentrations of potential biochemical markers (stable isotopes of nitrogen and carbon, fatty acid signatures, and lipid-soluble carotenoids and vitamins) that are indicative of differing food web and trophic...
Authors
S.B. Brown, M.T. Arts, L. R. Brown, M. Brown, K. Moore, M. Villella, J.D. Fitzsimons, D. C. Honeyfield, D. E. Tillitt, J.L. Zajicek, M. Wolgamood, J.G. Hnath
Science and Products
Filter Total Items: 125
Assessing water source and channel type as factors affecting benthic macroinvertebrate and periphyton assemblages in the highly urbanized Santa Ana River Basin, California Assessing water source and channel type as factors affecting benthic macroinvertebrate and periphyton assemblages in the highly urbanized Santa Ana River Basin, California
The Santa Ana River basin is the largest stream system in Southern California and includes a densely populated coastal area. Extensive urbanization has altered the geomorphology and hydrology of the streams, adversely affecting aquatic communities. We studied macroinvertebrate and periphyton assemblages in relation to two categorical features of the highly engineered hydrologic system...
Authors
Carmen A. Burton, Larry R. Brown, Kenneth Belitz
Risk factors and declines in northern cricket frogs (Acris crepitans) Risk factors and declines in northern cricket frogs (Acris crepitans)
No abstract available.
Authors
V.R. Beasley, S. Faeh, B. Wikoff, C. Staehle, J. Eisold, D. Nichols, Rebecca A. Cole, A. Schotthoefer, M. Greenwell, L. Brown
Effect of sample handling on thiamine and thiaminolytic activity in alewife Effect of sample handling on thiamine and thiaminolytic activity in alewife
Alewives Alosa pseudoharengus were collected to evaluate handling and processing conditions that may affect the measurement of their thiamine-thiaminase content. Fish were captured by otter trawl, and reference samples of live fish were quick-frozen on dry ice immediately following capture. Other samples were placed on wet ice (4??C) or held in ambient lake water (21.5??C) for periods of...
Authors
G.M. Wright, S.B. Brown, L. R. Brown, K. Moore, M. Villella, J.L. Zajicek, D. E. Tillitt, J.D. Fitzsimons, D. C. Honeyfield
Thiamine and thiaminase status in forage fish of salmonines from Lake Michigan Thiamine and thiaminase status in forage fish of salmonines from Lake Michigan
Dietary sources of thiamine (vitamin B1) and thiamine-degrading enzymes (thiaminases) are thought to be primary factors in the development of thiamine deficiency among Great Lakes salmonines. We surveyed major forage fish species in Lake Michigan for their content of thiamine, thiamine vitamers, and thiaminase activity. Concentrations of total thiamine were similar (P ≤ 0.05) among most...
Authors
D. E. Tillitt, J.L. Zajicek, S.B. Brown, L. R. Brown, J.D. Fitzsimons, D. C. Honeyfield, M.E. Holey, G.M. Wright
Effectiveness of egg immersion in aqueous solutions of thiamine and thiamine analogs for reducing early mortality syndrome Effectiveness of egg immersion in aqueous solutions of thiamine and thiamine analogs for reducing early mortality syndrome
Protocols used for therapeutic thiamine treatments in salmonine early mortality syndrome (EMS) were investigated in lake trout Salvelinus namaycush and coho salmon Oncorhynchus kisutch to assess their efficacy. At least 500 mg of thiamine HCl/L added to egg baths was required to produce a sustained elevation of thiamine content in lake trout eggs. Thiamine uptake from egg baths was not...
Authors
S.B. Brown, L. R. Brown, M. Brown, K. Moore, M. Villella, J.D. Fitzsimons, B. Williston, D. C. Honeyfield, J. P. Hinterkopf, D. E. Tillitt, J.L. Zajicek, M. Wolgamood
Can diet-dependent factors help explain fish-to-fish variation in thiamine-dependent early mortality syndrome? Can diet-dependent factors help explain fish-to-fish variation in thiamine-dependent early mortality syndrome?
To provide insight into the reasons why offspring of certain salmonine females exhibit early mortality syndrome (EMS) in the Great Lakes whereas others do not, we measured the egg concentrations of potential biochemical markers (stable isotopes of nitrogen and carbon, fatty acid signatures, and lipid-soluble carotenoids and vitamins) that are indicative of differing food web and trophic...
Authors
S.B. Brown, M.T. Arts, L. R. Brown, M. Brown, K. Moore, M. Villella, J.D. Fitzsimons, D. C. Honeyfield, D. E. Tillitt, J.L. Zajicek, M. Wolgamood, J.G. Hnath
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