A5070527370- Pharmaceutical and Antibiotic Environmental Impacts
- Fish Ecology and Management Studies
- Reproductive biology and impacts on aquatic species
- Environmental Toxicology and Ecotoxicology
- Fish biology, ecology, and behavior
- Toxic Organic Pollutants Impact
- Effects and risks of endocrine disrupting chemicals
- Ichthyology and Marine Biology
- Fish Biology and Ecology Studies
- Aquaculture Nutrition and Growth
- Amphibian and Reptile Biology
- Animal Behavior and Reproduction
- Physiological and biochemical adaptations
- Genetic diversity and population structure
- Biomimetic flight and propulsion mechanisms
- Water Quality and Resources Studies
- Urban Stormwater Management Solutions
- Turtle Biology and Conservation
- Wastewater Treatment and Reuse
- Aquaculture disease management and microbiota
- Analytical chemistry methods development
- Per- and polyfluoroalkyl substances research
- Diatoms and Algae Research
- Cephalopods and Marine Biology
- Species Distribution and Climate Change
St. Cloud State University
2016-2025
Louisiana State University
2014
Clemson University
2008-2010
United States Geological Survey
2010
University of Minnesota
2002
Louisiana State University Agricultural Center
1997
Food and Nutrition Service
1997
Antidepressant pharmaceuticals are widely prescribed in the United States; release of municipal wastewater effluent is a primary route introducing them to aquatic environments, where little known about their distribution and fate. Water, bed sediment, brain tissue from native white suckers (Catostomus commersoni) were collected upstream at points progressively downstream outfalls discharging two effluent-impacted streams, Boulder Creek (Colorado) Fourmile (Iowa). A liquid...
The effects of embryonic and larval exposure to environmentally relevant (ng/L) concentrations common antidepressants, fluoxetine, sertraline, venlafaxine, bupropion (singularly in mixture) on C-start escape behavior were evaluated fathead minnows (Pimephales promelas). Embryos (postfertilization until hatching) exposed for 5 d and, after hatching, allowed grow control well water 12 old. Similarly, posthatch these compounds. High-speed (1,000 frames/s) video recordings collected transferred...
Abstract Treated municipal wastewater effluent is an important pathway for Contaminants of Emerging Concern (CEC) to enter aquatic ecosystems. As the aging infrastructure in many industrialized countries requires upgrades or replacement, assessing new treatment technologies context CEC effects may provide additional support science-based resource management. Here, we used three lines evidence, analytical chemistry, fish exposure experiments, and water microbiome analysis, assess...
Abstract To reach adult habitats, juveniles of three species Hawaiian gobies (fishes under 3 cm long) climb waterfalls up to 350 m high, over 10 000 times their body length. The demands moving through such an extreme environment could constrain the range viable locomotor mechanisms that these fishes use. Previous qualitative observations indicated Lentipes concolor and Awaous guamensis use ‘powerbursts’ axial undulation climb, whereas Sicyopterus stimpsoni ‘inches up’ vertical surfaces by...
Environmental pressures may vary over the geographic range of a species, exposing subpopulations to divergent functional demands. How does exposure competing demands shape morphology species and influence divergence populations? We explored these questions by performing selection experiments on juveniles Hawaiian goby Sicyopterus stimpsoni, an amphidromous fish that exhibits morphological differences across portions its where different environmental predominate. Juvenile S. stimpsoni face...
SUMMARY Many species of gobiid fishes adhere to surfaces using a sucker formed from fusion the pelvic fins. Juveniles many amphidromous use this scale waterfalls during migrations upstream habitats after an oceanic larval phase. However, adults may still suckers re-scale if displaced. If attachment force is proportional area and growth isometric, then increases in forces that climbing fish must resist might outpace adhesive capacity, causing performance decline through ontogeny. To test for...
Pharmaceuticals are present in low concentrations (<100 ng/L) most municipal wastewater effluents but may be elevated locally because of factors such as input from pharmaceutical formulation facilities. Using existing concentration data, the authors assessed pharmaceuticals laboratory exposures fathead minnows (Pimephales promelas) and added environmental complexity through effluent exposures. In laboratory, larval mature were exposed to a simple opioid mixture (hydrocodone, methadone,...
Abstract Juveniles of three species Hawaiian gobiid fishes climb waterfalls during migration to adult habitats using two kinematically distinct patterns: Awaous guamensis and Lentipes concolor use rapid, intermittent bouts axial undulation (‘powerbursts’), whereas Sicyopterus stimpsoni inches up by alternately attaching oral pelvic suckers the substrate. Despite differing kinematics speed these behaviors, extreme demands locomotion might require similar levels performance from all climbing...
The present study investigated whether a combination of targeted analytical chemistry information with unsupervised, data-rich biological methodology (i.e., transcriptomics) could be utilized to evaluate relative contributions wastewater treatment plant (WWTP) effluents effects. effects WWTP on fish exposed ambient, receiving waters were studied at three locations distinct and watershed characteristics. At each location, 4 d exposures male fathead minnows the effluent upstream downstream...
Naturally occurring phytoestrogens may mimic biogenic estrogens and modulate endocrine action in vertebrates. Little is known, however, about their temporal spatial variability the environment biological effects associated with exposures. The present study assessed environmental presence of human-impacted relatively pristine areas. response larval sexually mature fathead minnows to environmentally relevant concentrations 3 common (genistein, daidzein, formononetin), both singly mixture, was...