Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Fish Behavior"”.
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Influence of CO2 on fishes in flowing water environments: implications for a non-physical barrier to movement
… the spread of these carp, as well as other fish, carbon dioxide (CO2) is being investigated as a potential nonphysical barrier. However, to date, most research on the effects of CO2 on fish behavior has occurred in static water conditions. Additionally, little is known about how elevated CO2 …
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The Effectiveness of Periodically-Harvested Closures in Meeting Ecological and Socioeconomic Objectives
<p>Periodically-harvested fisheries closures (PHCs) are a widespread form of community-based marine spatial management used throughout the Indo-Pacific that also is currently being intensively advocated by conservation organizations for supporting productive fisheries and healthy marine ecosystems. …
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Experimental study of fish response to turbulent flow fields generated by in-stream structures
… on habitat choice and migration path of fish is of great interest for biologists and engineers, especially when considering the impact of in-stream structures like dams or fish passages during stream restoration projects. Research is needed in both laboratory and field environments to …
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The Fish Population of Lake Poinsett, South Dakota, as Indicated By the Catch
… shocker were utilized to obtain samples of the fish population of Lake Poinsett, South Dakota. The species and size composition of the samples differed significantly with time of season, time of day, location on the lake, and type of gear. Decreased activity following spawning was the apparent …
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The behavioral space of zebrafish locomotion and its neural network analog
… I explore this question for the free-swimming behavior of zebrafish larvae. A parameter-independent method, similar to that used in studies of worms and flies, is applied to analyze swimming movies of fish. The motion itself yields a natural set of fish “eigenshapes” as axes, rather than the …
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Monitoring bluegill swimming behavior and the effects of sublethal ammonium chloride gradients
… of environmental factors and toxicants on fish behavior. The system recorded the X and Y coordinates of individual fish at 4-second intervals in a 50 cm square observation area and subsequently calculated 13 different behavioral parameters from the resulting time series of coordinates. The …
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Behavioral avoidance by fish of residual chlorine in power plant discharges
The behavior of fishes in and around power plant discharges has not been adequately explored despite the recent proliferation of electric generating stations. This study investigated the response of fish to heated and/or chlorinated waters in a field laboratory. Carp (Cyprinus carpio), channel …
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Applying edge-core theory of intraspecific life-history variation to the control of invasive silver carp (hypophthalmichthys molitrix)
… molitrix) are an invasive cyprinid fish that were introduced to North America in the 1970s and have since spread throughout the Mississippi River Basin. During the 2000s, silver carp invaded the Illinois River and began advancing towards the Laurentian Great Lakes, making them a …
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The maintenance of variation in Cyprinodontiformes
… guppy (Poecilia reticulata) and the bluefin killifish (Lucania goodei), two freshwater species in the order Cyprinodontiformes with extensive within-population color pattern variation found among males. I use these two species as case studies to examine the evolution and maintenance of color …
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Investigating group behavioral quantization of oceanic fish with Continental-shelf scale ocean-acoustic sensing
The recent fish population decline due to increased human presence has led to calls for predictive methods to help reverse or stabilize the situation. It has been difficult, however, to establish such methods primarily due to the technical obstacles in observing fish populations in natural …
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DISPERSAL MECHANISMS OF EMBRYONIC AND LARVAL BURBOT (LOTA LOTA)
<p>Many teleost fish produce planktonic larvae that primarily rely on hydrodynamic forces for dispersal. However, allometric growth patterns and larval behavior also plays a significant role in dispersal. The developmental timeline of dispersal mechanisms in burbot (<em>Lota lota</em>) larvae is …
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Behavioral Response of Pacific Lamprey (Entosphenus tridentatus) to Predator Odors
… odorant, in both count and duration; however, fish spent more time and made more entries into the test arm with the treatment than with the control. This could be evidence of predator inspection and/or ‘hiding’ (remaining still). No significant difference (<em>t</em>-test; <em>P </em>> 0.05) …
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Predation, turbidity, and other factors influencing juvenile Salmonid survival in the lower Snake River
… walleye (Sander vitreus) and channel catfish (Ictalurus punctatus). Consumption information is crucial because the construction of the Snake River hydrosystem has created a series of reservoirs, which have altered the river 's flow regimes, riparian vegetation, and turbidity. Further, …