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Articles 1 - 5 of 5
Full-Text Articles in Aquaculture and Fisheries
A Comparative Study Of The Effects Of Non-Starch Polysaccharide Gums On Physical Properties Of Single-Screw Extruded Aquafeed, Michael Brown, Parisa Fallahi, Kasiviswanathan Muthukumarappan, Poonam Singha, Scott Sindelar
A Comparative Study Of The Effects Of Non-Starch Polysaccharide Gums On Physical Properties Of Single-Screw Extruded Aquafeed, Michael Brown, Parisa Fallahi, Kasiviswanathan Muthukumarappan, Poonam Singha, Scott Sindelar
Natural Resource Management Faculty Publications
A factorial experimental design (5×3×2) was used to investigate the effects of non-starch polysaccharide binding agents on physical properties of single-screw extrusion. Extrusion cooking trials were performed with an ingredient blend for yellow perch, fortified with five non-starch polysaccharide binding agents including three plant-origin gums (guar, wheat gluten, carboxymethyl cellulose (CMC)) and two microbial-origin exopolysaccharide gums (xanthan and pullulan), with three levels of gum inclusion (3, 6, and 10%), and two levels of screw speed (100 and 150 rpm). Effects of the independent variables on extrudate characteristics were extensively analyzed and included density, expansion ratio, water absorption and solubility indices, …
Metabolic Theory Explains Latitudinal Variation In Common Carp Populations And Predicts Responses To Climate Change, Michael J. Weber, Michael L. Brown, David H. Wahl, Daniel E. Shoup
Metabolic Theory Explains Latitudinal Variation In Common Carp Populations And Predicts Responses To Climate Change, Michael J. Weber, Michael L. Brown, David H. Wahl, Daniel E. Shoup
Natural Resource Management Faculty Publications
Climate change is expected to alter temperature regimes experienced by fishes, which may also alter life history traits. However, predicting population-level responses to climate change has been difficult. Metabolic theory of ecology has been developed to explain how metabolism controls a variety of ecological processes, including life history attributes. Thus, this theory may be a useful tool for predicting fish population responses to climate change. To understand how climate change may alter freshwater fish life history, we measured population characteristics (e.g., recruitment, growth, body size, and mortality) of 21 North American common carp Cyprinus carpio populations spanning a latitudinal gradient …
A Comparison Between South Dakota And North American Standard Sampling Gears In Lakes And Reservoirs, Bradley J. Smith
A Comparison Between South Dakota And North American Standard Sampling Gears In Lakes And Reservoirs, Bradley J. Smith
Electronic Theses and Dissertations
A statewide gear comparison was performed in South Dakota during 2013 and 2014 between current South Dakota Department of Game, Fish and Parks (SDGFP) sampling gears (i.e., gill nets and modified fyke nets) and their equivalents described in Standard Methods for Sampling North American Freshwater Fishes (Standard). Adopting Standard gears would provide uniform gear specifications for annual sampling statewide, facilitate data sharing within South Dakota and beyond, and allow for large-scale spatial and temporal analyses relevant to researchers and managers. Sampling was divided between non-Missouri River (non-MR) and Missouri River (MR) systems because gill nets used by SDGFP to sample …
The Effects Of Chanellization And Channel Restoration On Aquatic Habitat And Biota Of The Pecos River, New Mexico, Darrel J. Mecham
The Effects Of Chanellization And Channel Restoration On Aquatic Habitat And Biota Of The Pecos River, New Mexico, Darrel J. Mecham
Electronic Theses and Dissertations
River channelization has been shown to negatively impact riverine ecosystems by degrading aquatic habitat conditions, decreasing diversity of both fish and aquatic invertebrate assemblages and impairing fish recruitment. As knowledge of the negative impacts of channelization has increased, so have channel restoration efforts. We evaluated a recent channel restoration project on the Pecos River, New Mexico by comparing abiotic and biotic conditions among five reaches of river, including the restored reach, an unchannelized reach and a channelized reach all prone to streamflow intermittence and an unchannelized reach and channelized reach more perennial in nature. Our first objective was to assess …
Food Habits Of Fall-Collected Age-0 Walleyes In Eastern South Dakota Glacial Lakes, B. J. Schall, M. J. Phayvanh, J. D. Grote, D. J. Dembkowski, M. R. Wuellner
Food Habits Of Fall-Collected Age-0 Walleyes In Eastern South Dakota Glacial Lakes, B. J. Schall, M. J. Phayvanh, J. D. Grote, D. J. Dembkowski, M. R. Wuellner
Natural Resource Management Faculty Publications
Food habits of age-0 fishes can influence their growth and survival prior to the first winter (Hoxmeier et al. 2006, Shoup and Wahl 2011). Ontogenetic diet shifts in juvenile piscivorous fishes result in a transition in consumption from zooplankton to macroinvertebrates and eventually fish throughout development (Mittelbach and Persson 1998). Certain food items may be more energetically beneficial to fishes than others as consumption of prey fishes may lead to faster growth rates of predators, decreased overwinter starvation, avoidance of competition, and reduced predation risk (Werner and Gilliam 1984). By the time age-0 walleyes (Sander vitreus) have reached lengths of …