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Showing 1 to 20 of 146 for “"Aquaculture and Fisheries"”.
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Behavioural ecotoxicology of the brown shrimp, Crangon crangon : changing colour in polluted environments
… has a great ecological value in UK estuaries and coastal areas and it is also a commercially important species. It utilizes chromatophores (specialized cells containing pigments) to match its background, changing its colour either from pale (pigments contracted) to dark (pigments expanded) or …
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Seasonal Investigation of Native Fishes and Their Habitats in Missouri River and Yellowstone River Backwaters
<p>Interactions between the Missouri River and its floodplain have been severely degraded due to channelization and impoundment. Ecologists have assumed that backwaters are a critical habitat component for certain life stages of native fishes; however, documented relationships are limited. During …
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Evaluating the Use of Modified Corn Distillers Grains as a Fish-meal Protein Replacement in Yellow Perch Perca flavescens
<p>Aquaculture relies heavily on marine-derived fish meal (FM) as a primary feed ingredient. Industry growth, high demand and increasing cost of finite FM supplies create urgency to find alternative protein sources. Plant products having sufficient nutrient composition and no anti-nutritional …
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Development and Application of a Spatially-explicit Model for Estimating Growth of Age-0 Pallid Sturgeon in the Missouri River
<p>Endemic to the Missouri and Mississippi rivers, the Pallid Sturgeon (Scaphirhynchus albus) has been listed as an endangered species since 1990. Construction of six main-stem dams along the Missouri River has altered spawning and nursery habitats, while obstructing upstream migrations of adults …
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A Comparison Between South Dakota and North American Standard Sampling Gears in Lakes and Reservoirs
… 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 <em>Standard Methods for Sampling North American Freshwater Fishes</em> …
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Geographic expansion and small stream use by three species of invasive Asian carp in Illinois
… bighead carp (Hypophthalmichthys nobilis), and silver carp (H. molitrix), are three species of Asian carp that were intentionally introduced into the United States in the 1960s and 70s for use in aquaculture and fisheries management. These three species have established populations …
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Nuclear Localization of Proteins and Genome Editing in the Oomycete Phytophthora sojae
… are actually phylogenetic relatives of diatoms and brown algae, within the kingdom Stramenopila. Many oomycete species, mainly in the genera Phytophthora, Pythium and downy mildews, are devastating plant pathogens that cause multibillion-dollar losses to agriculture annually in the world. Some …
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Steps towards successful cryopreservation of fish gametes: improving laboratory protocols in the Zebrafish model to increase gamete viability and efficiency
… mammalian gametes have long been freezable, eggs and embryos from fish have yet to be successfully frozen. Furthermore, protocols for freezing fish sperm have low success rates. In an effort to overcome the limitations in gamete manipulation currently impeding successful fish gamete …
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Interactions between Lake Trout and Bull Trout in the Priest Lake system, Idaho
<p>Seasonal and directional movements, and distributions of Bull Trout and Lake Trout between Priest Lake and Upper Priest Lake, Idaho, were studied from May 2015 to April 2017. Lake Trout (n=220) and Bull Trout (n=40) movements were monitored using Lotek JSATS transmitters and hydrophones both …
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Analyzing the diet composition of Lake Trout (Salvelinus namaycush) in Upper Priest Lake
… piscivory of Lake Trout from Upper Priest Lake and document any possible Lake Trout predation upon Bull Trout in the Upper Priest Lake system. We obtained Lake Trout samples from this system during annual gill netting, which is performed to suppress Lake Trout. We then performed stomach …
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Differentiating the effects of two non-native fish in the Turnbull National Wildlife Refuge
… fish, the brook stickleback, Culaea inconstans, and pumpkinseed, Lepomis gibbosus, on the aquatic invertebrates and food webs of Turnbull National Wildlife Refuge (TNWR). Ten ponds were analyzed and compared with stable isotope analysis and invertebrate abundance data. Three ponds were chosen to …
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GROWTH PATTERNS AND SIZE-GROUP INTERACTIONS IN HATCHERY-REARED AGE-0 LAKE STURGEON
… is an important tool for rehabilitation and conservation, but is expensive. When hatchery sturgeon do not grow large enough before stocking, their odds of survival decline significantly and resources are wasted. We investigated the potential limiting effect of large lake sturgeon on the …
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Investigating the relationships between biotic and abiotic factors affecting migratory behavior in Westslope Cutthroat Trout within the Priest River System
… life histories, encompassing both resident and migratory behaviors. Migratory life histories play a pivotal role in maintaining metapopulations for various reasons, facilitating genetic exchange between populations and yielding larger-sized females with increased fecundity relative to …
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Modulation of Intraoral Subambient Pressure and Feeding Behavior Relative to Prey Type in the Largemouth Bass, Micropterus Salmoides Floridanus
… to prey at different levels of elusiveness, and were in turn predicted to vary suction pressure generation when exposed to these conditions. Eight bass fed <em>Palaemonetes </em>sp. shrimp in an open water (elusive) setting and in a vegetated (non-elusive) setting were found to generate …
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