Publications
Since 1966, CERC scientists have published over 2000 peer reviewed articles and reports. Browse our publications below or search CERC's publications by author or title through the USGS Publications Warehouse.
If you need assistance in locating a specific CERC publication, please contact the CERC Librarian.
Filter Total Items: 1407
Widespread occurrence of intersex in black basses (Micropterus spp.) from U.S. rivers, 1995-2004
Intersex occurrence in freshwater fishes was evaluated for nine river basins in the United States. Testicular oocytes (predominantly male testes containing female germ cells) were the most pervasive form of intersex observed, even though similar numbers of male (n = 1477) and female (n = 1633) fish were examined. Intersex was found in 3% of the fish collected. The intersex condition was observed i
Authors
J.E. Hinck, V. S. Blazer, C. J. Schmitt, D. M. Papoulias, D. E. Tillitt
Toxicity of sediment cores collected from the Ashtabula River in northeastern Ohio, USA, to the amphipod Hyalella azteca
This study was conducted to support a Natural Resource Damage Assessment and Restoration project associated with the Ashtabula River in Ohio. The objective of the study was to evaluate the chemistry and toxicity of 50 sediment samples obtained from five cores collected from the Ashtabula River (10 samples/core, with each 10-cm-diameter core collected to a total depth of about 150 cm). Effects of c
Authors
C.G. Ingersoll, N.E. Kemble, J.L. Kunz, W. G. Brumbaugh, D.D. MacDonald, D. Smorong
Effects of mining-derived metals on riffle-dwelling benthic fishes in Southeast Missouri, USA
We studied the ecological effects of mining-derived metals on riffle-dwelling benthic fishes at 16 sites in the Viburnum Trend lead-zinc mining district of southeast Missouri. Fish community attributes were compared to watershed features and to physical and chemical variables including metal concentrations in sediment pore water and fish. Ozark sculpin (Cottus hypselurus), rainbow darter (Etheosto
Authors
A.L. Allert, J.F. Fairchild, C. J. Schmitt, J.M. Besser, W. G. Brumbaugh, S.J. Olson
Substrate choice of territorial male topeka shiners (notropis topeka) in the absence of sunfish (lepomis sp.)
Topeka shiners (Notropis topeka), an endangered minnow species, typically spawn on or around breeding Lepomis sunfish (Centrarchidae) nests. Why spawning Topeka shiners are attracted to these nests is unclear, but having the nesting sunfish provide shiner eggs with improved aeration, a lessening of siltation, and protection from egg predators are possibilities. We tested the substrate utilisation
Authors
C.C. Witte, M. L. Wildhaber, A. Arab, Douglas B. Noltie
Species richness, relative abundance, and habitat associations of nocturnal birds along the rio grande in Southern texas
The segment of the Rio Grande between International Falcon Reservoir and Del Rio, Texas (distance ca. 350 km), remains largely unexplored ornithologically. We surveyed nocturnal birds monthly during February-June 1998 at 19 stations along the Rio Grande (n = 6) and at upland stock ponds (n = 13) in Webb County, Texas. We conducted 10-min point counts (n = 89) after sunset and before moonset. Four
Authors
M.K. Skoruppa, M.C. Woodin, G. Blacklock
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 to determ
Authors
J.E. Hinck, C. J. Schmitt, K.A. Chojnacki, D. E. Tillitt
An ecological risk assessment of the acute and chronic effects of the herbicide clopyralid to rainbow trout (Oncorhynchus mykiss)
Clopyralid (3,6-dichloro-2-pyridinecarboxylic acid) is a pyridine herbicide frequently used to control invasive, noxious weeds in the northwestern United States. Clopyralid exhibits low acute toxicity to fish, including the rainbow trout (Oncorhynchus mykiss) and the threatened bull trout (Salvelinus confluentus). However, there are no published chronic toxicity data for clopyralid and fish that c
Authors
J.F. Fairchild, A.L. Allert, K.P. Feltz, K.J. Nelson, J.A. Valle
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 current stud
Authors
Mendez S.I. Storrs, D. E. Tillitt, T.A.G. Rittenhouse, R. D. Semlitsch
An estimate of the historic population size of adult pallid sturgeon in the upper Missouri river basin, Montana and North Dakota
Juvenile pallid sturgeon Scaphirhynchus albus raised in hatcheries and stocked in the wild are used to augment critically imperiled populations of this federally endangered species in the United States. For pallid sturgeon in recovery priority management area 2 (RPMA 2) of the Missouri River and lower Yellowstone River where natural recruitment has not occurred for decades, restoration programs ai
Authors
P.J. Braaten, D.B. Fuller, R.D. Lott, G.R. Jordan
Hierarchical Bayesian Markov switching models with application to predicting spawning success of shovelnose sturgeon
The timing of spawning in fish is tightly linked to environmental factors; however, these factors are not very well understood for many species. Specifically, little information is available to guide recruitment efforts for endangered species such as the sturgeon. Therefore, we propose a Bayesian hierarchical model for predicting the success of spawning of the shovelnose sturgeon which uses both b
Authors
S. H. Holan, G. M. Davis, M. L. Wildhaber, A. J. DeLonay, D. M. Papoulias
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 study we i
Authors
D. C. Honeyfield, J.D. Fitzsimons, D. E. Tillitt, S.B. Brown
Impacts of settlement, damming, and hydromanagement in two boreal lakes: A comparative paleolimnological study
Namakan Lake, located in shared border waters in northeastern Minnesota and northwestern Ontario, was subjected to several anthropogenic impacts including logging, damming, water-level manipulations, and perhaps climate change. We used paleolimnology to determine how these stressors impacted Namakan Lake in comparison to a control lake (Lac La Croix) that was not subject to damming and hydromanage
Authors
C.A. Serieyssol, M.B. Edlund, L.W. Kallemeyn