Donald Tillitt, PhD (Former Employee)

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February 8, 2019

Thiamine (Vitamin B1) Deficiency in Fish and Wildlife

In the last few decades, thiamine deficiency has been observed in fish and wildlife in the Great Lakes, Alaska, Sweden and several other areas in North America and Europe. Thiamine is an essential vitamin needed for cell function. Thiamine deficiency has been linked to neurological disorders, immunosuppression, and lower reproductive viability. These disorders potentially reduce populations of...

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Ecosystems Mission Area, Species Management Research Program, Columbia Environmental Research Center

Thiamine (Vitamin B1) Deficiency in Fish and Wildlife

February 8, 2019

Thiamine (Vitamin B1) Deficiency in Fish and Wildlife

In the last few decades, thiamine deficiency has been observed in fish and wildlife in the Great Lakes, Alaska, Sweden and several other areas in North America and Europe. Thiamine is an essential vitamin needed for cell function. Thiamine deficiency has been linked to neurological disorders, immunosuppression, and lower reproductive viability. These disorders potentially reduce populations of...

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January 1, 2009

Environmental contaminants in freshwater fish and their risk to piscivorous wildlife based on a national monitoring program Environmental contaminants in freshwater fish and their risk to piscivorous wildlife based on a national monitoring program

Organochlorine chemical residues and elemental concentrations were measured in piscivorous and benthivorous fish at 111 sites from large U.S. river basins. Potential contaminant sources such as urban and agricultural runoff, industrial discharges, mine drainage, and irrigation varied among the sampling sites. Our objectives were to provide summary statistics for chemical contaminants and...

Authors

J.E. Hinck, C. J. Schmitt, K.A. Chojnacki, D. E. Tillitt

By

Columbia Environmental Research Center

January 1, 2009

Egg fatty acid composition from lake trout fed two Lake Michigan prey fish species. Egg fatty acid composition from lake trout fed two Lake Michigan prey fish species.

We previously demonstrated that there were significant differences in the egg thiamine content in lake trout Salvelinus namaycush fed two Lake Michigan prey fish (alewife Alosa pseudoharengus and bloater Coregonus hoyi). Lake trout fed alewives produced eggs low in thiamine, but it was unknown whether the consumption of alewives affected other nutritionally important components. In this...

Authors

D. C. Honeyfield, J.D. Fitzsimons, D. E. Tillitt, S.B. Brown

By

Columbia Environmental Research Center

January 1, 2009

Quantitative polymerase chain reaction (PCR) assays for a bacterial thiaminase I gene and the thiaminase-producing bacterium Paenibacillus thiaminolyticus. Quantitative polymerase chain reaction (PCR) assays for a bacterial thiaminase I gene and the thiaminase-producing bacterium Paenibacillus thiaminolyticus.

The thiaminase I enzyme produced by the gram-positive bacterium Paenibacillus thiaminolyticus isolated from the viscera of Lake Michigan alewives Alosa pseudoharengus is currently the only defined source of the thiaminase activity linked to thiamine (vitamin B1) deficiency in early mortality syndrome (EMS) in the larvae of Great Lakes salmonines. Diets of alewife or isolated strains of P

Authors

C.A. Richter, Maureen K. Wright-Osment, J.L. Zajicek, D. C. Honeyfield, D. E. Tillitt

By

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Columbia Environmental Research Center

January 1, 2009

Behavioral response and kinetics of terrestrial atrazine exposure in American toads (bufo americanus) Behavioral response and kinetics of terrestrial atrazine exposure in American toads (bufo americanus)

Amphibians in terrestrial environments obtain water through a highly vascularized pelvic patch of skin. Chemicals can also be exchanged across this patch. Atrazine (ATZ), a widespread herbicide, continues to be a concern among amphibian ecologists based on potential exposure and toxicity. Few studies have examined its impact on the terrestrial juvenile or adult stages of toads. In the...

Authors

Mendez Storrs, D. E. Tillitt, T.A.G. Rittenhouse, R. D. Semlitsch

By

Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Columbia Environmental Research Center

January 1, 2009

Dreissenid mussels from the Great Lakes contain elevated thiaminase activity Dreissenid mussels from the Great Lakes contain elevated thiaminase activity

We examined thiaminase activity in dreissenid mussels collected at different depths and seasons, and from various locations in Lakes Michigan, Ontario, and Huron. Here we present evidence that two dreissenid mussel species (Dreissena bugensis and D. polymorpha) contain thiaminase activity that is 5-100 fold greater than observed in Great Lakes fishes. Thiaminase activity in zebra mussels...

Authors

D. E. Tillitt, S.C. Riley, A.N. Evans, S. J. Nichols, J.L. Zajicek, J. Rinchard, C.A. Richter, C.C. Krueger

By

Columbia Environmental Research Center

January 1, 2009

Variations of thiaminase I activity pH dependencies among typical Great Lakes forage fish and Paenibacillus thiaminolyticus. Variations of thiaminase I activity pH dependencies among typical Great Lakes forage fish and Paenibacillus thiaminolyticus.

The source of thiaminase in the Great Lakes food web remains unknown. Biochemical characterization of the thiaminase I activities observed in forage fish was undertaken to provide insights into potential thiaminase sources and to optimize catalytic assay conditions. We measured the thiaminase I activities of crude extracts from five forage fish species and one strain of Paenibacillus

Authors

J.L. Zajicek, L. Brown, S.B. Brown, D. C. Honeyfield, J.D. Fitzsimons, D. E. Tillitt

By

Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Columbia Environmental Research Center

June 18, 2008

Reproductive impairment of Great Lakes lake trout by dioxin-like chemicals: Chapter 21 Reproductive impairment of Great Lakes lake trout by dioxin-like chemicals: Chapter 21

No abstract available.

Authors

Donald E. Tillitt, Philip S. Cook, John P. Giesy

By

Ecosystems Mission Area, Columbia Environmental Research Center

June 18, 2008

Thiamine deficiency effects on the vision and foraging ability of lake trout fry Thiamine deficiency effects on the vision and foraging ability of lake trout fry

The exact causes of the historical recruitment failures of Great Lakes lake trout Salvelinus namaycush are unknown. Thiamine deficiency has been associated with neurological abnormalities in lake trout that lead to early mortality syndrome (EMS) in salmonine swim-up fry, and EMS-related mortality at the swim-up stage is a factor that contributes to the reproductive failure of lake trout

Authors

Donald E. Tillitt, James L. Zajicek, Rachel Claunch, Dale C. Honeyfield, John D. Fitzsimons, Scott B. Brown

By

Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Columbia Environmental Research Center

January 1, 2008

Thiamine Deficiency Complex Workshop final report: November 6-7, 2008, Ann Arbor, MI Thiamine Deficiency Complex Workshop final report: November 6-7, 2008, Ann Arbor, MI

Fry mortality which was first observed in the late 1960s in Great Lakes salmonines and in Baltic Sea salmon in 1974 has now been linked to thiamine deficiency (historically referred to as Early Mortality Syndrome, or EMS and M74, respectively). Over the past 14 years significant strides have been made in our understanding of this perplexing problem. It is now known that thiamine...

Authors

Dale C. Honeyfield, Donald E. Tillitt, Stephen C. Riley

By

Ecosystems Mission Area, Eastern Ecological Science Center

January 1, 2008

Relations between and among contaminant concentrations and biomarkers in black bass (Micropterus spp.) and common carp (Cyprinus carpio) from large U.S. rivers, 1995-2004 Relations between and among contaminant concentrations and biomarkers in black bass (Micropterus spp.) and common carp (Cyprinus carpio) from large U.S. rivers, 1995-2004

Environmental contaminant and biomarker monitoring data from major U.S. river basins were summarized for black bass (Micropterus spp.) and common carp (Cyprinus carpio) sampled over a nine year period. Cumulative frequency distributions revealed taxon differences for many organochlorine residue concentrations, elemental contaminant concentrations, and biomarkers, but few gender...

Authors

J.E. Hinck, C. J. Schmitt, Mark R. Ellersieck, D. E. Tillitt

By

Columbia Environmental Research Center

January 1, 2008

Use of a 15 k gene microarray to determine gene expression changes in response to acute and chronic methylmercury exposure in the fathead minnow Pimephales promelas Rafinesque Use of a 15 k gene microarray to determine gene expression changes in response to acute and chronic methylmercury exposure in the fathead minnow Pimephales promelas Rafinesque

This study describes the use of a 15 000 gene microarray developed for the toxicological model species, Pimephales promelas, in investigating the impact of acute and chronic methylmercury exposures in male gonad and liver tissues. The results show significant differences in the individual genes that were differentially expressed in response to each treatment. In liver, a total of 650...

Authors

R. Klaper, Barbara J. Carter, C.A. Richter, P.E. Drevnick, M.B. Sandheinrich, D. E. Tillitt

By

Columbia Environmental Research Center

January 1, 2008

Accumulation of environmental contaminants in wood duck (Aix sponsa) eggs, with emphasis on polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans Accumulation of environmental contaminants in wood duck (Aix sponsa) eggs, with emphasis on polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans

We measured polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polychlorinated biphenyls (PCBs), organochlorine pesticides, and mercury in wood duck (Aix sponsa) eggs collected near a North Carolina (USA) bleached kraft paper mill. Samples were taken a decade after the mill stopped using molecular chlorine. Using avian toxic equivalency factors, 2,3,7,8...

Authors

T.P. Augspurger, K. R. Echols, P.H. Peterman, T.W. May, C.E. Orazio, D. E. Tillitt, R.T. Di Giulio

By

Columbia Environmental Research Center

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