A5076550118- Fish Ecology and Management Studies
- Reproductive biology and impacts on aquatic species
- Aquaculture Nutrition and Growth
- Aquaculture disease management and microbiota
- Neurobiology and Insect Physiology Research
- Identification and Quantification in Food
- Olfactory and Sensory Function Studies
- Fish Biology and Ecology Studies
- Animal Behavior and Reproduction
- Marine and fisheries research
- Marine animal studies overview
- Aquatic Invertebrate Ecology and Behavior
- Insect Pheromone Research and Control
- Environmental DNA in Biodiversity Studies
- Fish biology, ecology, and behavior
- Biochemical Analysis and Sensing Techniques
- Hydrology and Sediment Transport Processes
- Advanced Chemical Sensor Technologies
- Wildlife Ecology and Conservation
- Aquatic Ecosystems and Phytoplankton Dynamics
- Hydrology and Watershed Management Studies
- Genetic diversity and population structure
- Underwater Acoustics Research
- Sperm and Testicular Function
- Ship Hydrodynamics and Maneuverability
University of Minnesota
2015-2024
Minnesota Department of Natural Resources
2014-2023
University of Minnesota System
2010-2021
United States Geological Survey
2011
Institut thématique Génétique, génomique et bioinformatique
2010
Aarhus University
2010
Environmental Protection Agency
2007
North Carolina State University
2007
University of Alberta
1986-2000
Centre for Environment, Fisheries and Aquaculture Science
1994
Degradation of environmental DNA (eDNA) in aquatic habitats can affect the interpretation eDNA data and ability to detect organisms. The effect temperature trophic state on decay Common Carp (Cyprinus carpio) was evaluated using lake water microcosms quantitative PCR for a Carp-specific genetic marker two experiments. first experiment tested decay. exhibited exponential that increased with temperature. slowest rate observed at 5 °C, T90 value (time 90% reduction from initial concentration)...
Few studies have examined capture and extraction methods for environmental DNA (eDNA) to identify techniques optimal detection quantification. In this study, precipitation, centrifugation filtration eDNA six commercially available kits were evaluated their ability detect quantify common carp (Cyprinus carpio) mitochondrial using quantitative PCR in a series of laboratory experiments. Filtration yielded the most eDNA, glass fibre (GF) filter performed better than similar pore size...
Although environmental DNA (eDNA) has been used to infer the presence of rare aquatic species, many facets this technique remain unresolved. In particular, relationship between eDNA and fish distribution is not known. We examined their (detection rate concentration) in a lake. A quantitative PCR (qPCR) assay for region within cytochrome b gene common carp (Cyprinus carpio or 'carp'), an ubiquitous invasive fish, was developed measure Lake Staring (MN, USA), which both density have closely...
Although the common, silver, and bighead carps are native sparsely distributed in Eurasia, these fish have become abundant invasive North America. An understanding of biology species may provide insights into sustainable control methods. The animal-associated microbiome plays an important role host health. Characterization carp factors that affect its composition is step toward interrelationships between their environments. We compared fecal microbiomes from wild laboratory environments...
This study establishes that ovulated female goldfish release F type prostaglandins (PGFs) to the water where they stimulate male spawning behavior and comprise postovulatory pheromone. We first demonstrated prostaglandin-injected immunoreactive PGFs water. Next, using electro-olfactogram recording (EOG), we determined waterborne function as potent olfactory stimulants for mature goldfish. Prostaglandin F2α (PGF2α) its metabolite 15-keto-prostaglandin (15K-PGF2α) were most prostaglandins;...
Larval sea lamprey inhabit freshwater streams and migrate to oceans or lakes feed after a radical metamorphosis; subsequently, mature adults return spawn. Previous observations suggested that utilize the odor of conspecific larvae select for spawning. Here we report biochemical electrophysiological evidence this is comprised two unique bile acids released by larvae. High performance liquid chromatography mass spectrometry demonstrated larval produce release acids, allocholic acid (ACA)...
Abstract Radio‐ and acoustic telemetry in three Midwestern lakes demonstrated that common carp, Cyprinus carpio L., aggregate as water temperatures descend below 10 °C. Particularly dense aggregations formed at <5 °C, once located, these could be removed with an efficiency of up to 94% using seine nets. Carp aggregated just the surface ice (approximately 1.5 m) rarely descended warmer waters, which extended down m. Although consistently close shore, their locations not explained by...
Abstract Most species of fish rely on pheromones (chemical signals released by conspecifics) to mediate social behaviours. Three categories can be discerned based their function: anti‐predator cues, and reproductive cues. Each these comprises that induce “primer” effects (developmental and/or endocrinological changes) “releaser” (strong behavioural changes). A handful have been chemically identified all are remarkably potent. Almost metabolic products whose production is seemingly...
Four behavioral experiments conducted in both the laboratory and field provide evidence that adult sea lamprey (Petromyzon marinus) select spawning rivers based on odor of larvae they contain bile acids released by are part this pheromonal odor. First, when tested a recirculating maze, migratory spent more time water scented with larvae. However, fully mature, adults lost their responsiveness to preferred instead mature individuals. Second, flowing stream, swam upstream actively was Third,...
Abstract —This study explored the possibility that environmental estrogens in sewage effluent may reduce reproductive fitness of adult male fish by suppressing their behaviors, including ability to compete for nests and females. Male fathead minnows ( Pimephales promelas ) were exposed three weeks either blank control, released a treatment plant (STPE), waterborne estradiol (E 2 ), or synthetic androgen (methyltestosterone [MT]). Afterward, placed with females nest, behavior was monitored 5...