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Dissertations / Theses on the topic 'Largemouth Bass Micropterus salmoides'
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1
Hoffman, Elizabeth Marie. "Habitat utilization and movement patterns of subadult largemouth bass (Micropterus salmoides) in the Ohio River." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2230.
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Thesis (M.S.)--West Virginia University, 2001.Title from document title page. Document formatted into pages; contains vii, 95 p. : ill. (some col.), maps (some col.). Vita. Includes abstract. Includes bibliographical references (p. 51-55).
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Norris, Alicia Jean DeVries Dennis R. Wright Russell A. "Estuaries as habitat for a freshwater species ecology of largemouth bass (Micropterus salmoides) along a salinity gradient /." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Theses/NORRIS_ALICIA_59.pdf.
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Dancel, Maria Cristina Argel. "Mass spectrometric studies of estrogen receptors from largemouth bass (Micropterus salmoides)." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0012948.
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Connell, Patrice M. (Patrice Michelle). "Effects of Copper on Immune Responses of Largemouth Bass, Micropterus salmoides." Thesis, University of North Texas, 1994. https://digital.library.unt.edu/ark:/67531/metadc279100/.
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Copper exposures of 400 μg/L for 5,10 and 15 days resulted in no significant differences in antibody titers of largemouth bass, Micropterus salmoides injected with Aeromonas hydrophila compared to control-injected bass. Twenty days of exposure did significantly increase titers. The control group had significantly lower antibody titers than either control-injected or copper-exposed.
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Taylor, Geraldine Claire. "Biology and ecology of largemouth bass Micropterus salmoides in two temperate South African impoundments." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001668.
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Globally largemouth bass Micropterus salmoides is one of the most widely introduced game fish species which has now become invasive in many countries. Well researched in its native North America, there are few studies on this species in its introduced range. This study aims to improve the understanding of the biology and ecology of M. salmoides in temperate southern Africa, where it threatens native biota and supports a popular recreational fishery. This aim was addressed by assessing the age, growth, maturity, reproductive seasonality, feeding, mortality and movement, of two M. salmoides populations from Wriggleswade (1000 ha, 723 m amsl, 32º35'S; 27º33'E) and Mankazana (35 ha, 66 m amsl, 33º09'S; 26º57'E) Dams in the Eastern Cape of South Africa. The most suitable structure for ageing M. salmoides was determined by comparing the accuracy and precision of otoliths and scales. Scales tended to underestimate the age of fish older than five years. Sectioned sagittal otoliths were the more precise structures for ageing (otoliths CV = 15.8 vs. scales CV = 21.9). The periodicity of growth zone formation was validated as annual for otoliths using both edge analysis (EA), and mark recapture of chemically tagged fish (MRCT). EA indicated one annual peak in the frequency of opaque margins between September and January using a periodic logistic regression and a binomial model linked with a von Mises distribution for circular data. MRCT showed the linear relationship between time at liberty and number of growth zones distal to the fluorescent band was not significantly different from one (slope = 0.89). Reproduction was similar to that in native and non-native populations with fish reaching age at 50% maturity at ca. two years, and length at 50% maturity at 259-290 mm FL depending on growth rate. Spawning season occurred in the spring months of August to October. The Wriggleswade Dam population reached similar ages (14 yrs) to populations in temperate North America. Growth was described using the von Bertalanffy growth equations of (Lt = 420(1-ᵉ⁻°·³³⁽ᵗ⁺°·²¹⁾) mm FL in Wriggleswade and (Lt = 641(1-ᵉ⁻°·²²⁽ᵗ⁺°·⁷⁶⁾) mm FL in Mankazana. Growth performance of both populations, described using the phi prime index, seemed to be correlated with temperature and the Wriggleswade Dam population (Φ’ = 2.8) grew similarly to those native temperate North American populations and the non-native populations of Japan and Italy. The Mankazana population had a higher growth performance (Φ’ = 2.9) compared to Wriggleswade and growth was comparable to other nonnative African populations. Both populations utilised all available food resources, with the Mankazana population being in better condition than the Wriggleswade population as a result of a more diverse diet, highly abundant food sources throughout the year, and potentially the adoption of a more conservative ambush feeding strategy. The Wriggleswade population, which was utilised by competitive anglers, showed low mortality rates (Z = 0.43 yr⁻¹), and translocated fish dispersed from the common release site, travelling an average distance of 4km over the study time of 494 days. These results indicated that M. salmoides are successful in these environments, growing at expected temperature dependant rates, maturing at two years, using all available food groups, and suffering from low mortality. It is therefore likely that they will persist in South Africa and establish where introduced.
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Mapes, Robert L. "Young of year largemouth bass (Micropterus salmoides) relative abundance and diet: role of habitat type, spatial context, and size." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/34532.
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Master of ScienceDivision of Biology
Martha E. Mather
Habitat is a central focus of ecological research and fisheries management. For example, a Web of Science search returned over 88,000 peer-reviewed studies that examined fish habitat, the National Fish Habitat Partnership has invested millions of dollars to “foster fish habitat conservation,” and “essential fish habitat” is a central tenet of marine fisheries policy. The overarching goal of my thesis was to examine the spatial context of fish habitat research in order to improve the effectiveness of fisheries management. To achieve this goal, I quantified approaches to fish habitat used in the peer reviewed literature. Then I tested if approaches to assessing habitat provided different ecological answers to key questions using 1,200 young of year largemouth bass (Micropterus salmoides) collected in Hillsdale Lake, Kansas, in 2014-2015. Within, the fisheries habitat literature, several gaps exist. First, although vegetation was a major focus of young of year largemouth bass habitat research, few studies quantitatively compared young of year largemouth abundance and diet across vegetated and non-vegetated habitats. Second, relatively little of the fisheries habitat literature on young of year largemouth bass explicitly tested habitat type, a common approach used in management and restoration. Third, peer reviewed papers on young of year largemouth bass physical habitat used multiple approaches to studying habitat (local characteristics, habitat type, lakewide characteristics), then often ignored spatial variation completely in interpreting empirical results. Field sampling provided information on several of these gaps. First, young of year largemouth bass were more abundant in vegetation and beach habitats than in rock, wood, or offshore habitats. Young of year largemouth bass utilized beach habitats as often as vegetated habitats. Diets were similar across vegetated and beach habitat types. Second, size of young of year largemouth bass increased through time but size and habitat were not related. My data showed that the size range seen for first year largemouth bass in the first summer in Hillsdale Lake did not alter their distribution or diet. From my research, I make the following recommendations. 1.) Concurrently examine local characteristics, habitat type, and lakewide characteristics with the same data set. 2.) Include insights about different approaches in the discussion of all future fisheries habitat studies. 3.) Continue to test multiple approaches to test fisheries response to habitat. In summary, using different approaches to study young of year largemouth bass habitat use could improve our scientific understanding and aid in restoration and management of reservoir and lake fisheries.
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Janney, Eric C. "Evaluation of a fall stocking of adult and intermediate largemouth bass (Micropterus salmoides) into two Ohio River embayments." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1909.
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Thesis (M.S.)--West Virginia University, 2001.Title from document title page. Document formatted into pages; contains v, 94 p. : ill. (some col.), map. Includes abstract. Includes bibliographical references.
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Reid, Scott McMillan. "Influence of turbidity on piscivory in largemouth bass, Micropterus salmoides, experimental and inter-population investigations." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30229.pdf.
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Almeida, Ana Marta Félix e. Costa de. "Qualidade nutricional do perfil da carne de achigã (Micropterus salmoides) capturados em épocas distintas numa das principais albufeiras do Alentejo." Master's thesis, Universidade de Évora, 2019. http://hdl.handle.net/10174/26208.
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Sendo o achigã uma espécie com potencial dinamizador de regiões interiores alentejanas por via da pesca desportiva, o objetivo geral desta dissertação consistiu em determinar a qualidade nutricional da carne de achigã em duas épocas distintas, de forma a avaliar se o seu consumo poderá ser considerado uma prática saudável na dieta dos portugueses.
Foram capturados 41 animais divididos entre inverno e verão, provenientes da Albufeira de Póvoas e Meadas, a fim de caracterizar a composição química e a qualidade nutricional do músculo de achigã.
Verificou-se que a época influenciou significativamente o perfil lipídico e o teor proteico da carne de achigã. Os resultados obtidos revelam que a parte edível apresenta qualidade nutricional ao nível destes compostos. Contudo, a sua composição química no verão pode revelar-se uma prática menos saudável, já que o seu perfil apresenta alteração ao nível dos principais grupos de lípidos analisados; ABSTRACT:
As the largemouth bass is a species with potential for promoting Alentejo inland regions through sport fishing, the general purpose of this dissertation was to determine the nutritional quality of largemouth bass meat at two different seasons, in order to assess if this species consumption maybe considered as a healthy practice in Portuguese diet.
In order to characterize the chemical composition and nutritional quality of the largemouth bass meat, 41 animals from Póvoas e Meadas reservoir, were captured between winter and summer.
It was shown that season has significantly influenced the lipidic and protein profile of the largemouth bass meat. The obtained results also suggest that the edible part presents nutritional quality in these profiles. However, largemouth bass chemical compositions in summer can be an unhealthier practice, since its profiles shows changes in the main lipid groups analysed.
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Coursey, Andrew Richard. "ALTERNATIVE FEEDING STRATEGIES TO MAXIMIZE MARINE FEEDSTUFF REPLACEMENT IN LARGEMOUTH BASS Micropterus salmoides CULTURE WHILE MAINTAINING PRODUCTION PERFORMANCE." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/648.
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ANDREW R. COURSEY, for the Master of Science degree in Zoology, presented 24 June 2011 at Southern Illinois University Carbondale TITLE: ALTERNATIVE FEEDING STRATEGIES TO MAXIMIZE MARINE FEEDSTUFF REPLACEMENT IN LARGEMOUTH BASS Micropterus salmoides CULTURE WHILE MAINTAINING PRODUCTION PERFORMANCE Advisors: Chris Kohler and Jesse Trushenski Harvest of marine resources for feedstuff production is at its maximum sustainable yield and alternative feedstuffs are needed to supply livestock production for an expanding human population having a growing desire for seafood. Aquaculture is currently the fastest growing sector of agriculture, but the high cost and limited supplies of marine feedstuffs for aquafeeds could ultimately limit production of foodfish. Replacement of marine feedstuffs poses a dilemma, however, as replacement of fish meal can affect animal growth, and replacement of fish oil in aquafeeds leads to altered fillet fatty acid profiles without the maximum benefit of high omega-3 (n-3) and long-chain polyunsaturated fatty acids (LC-PUFA) content. Two feeding trials were conducted to determine if poultry byproducts can replace fish meal and fish oil in diets for largemouth bass Micropterus salmoides without affecting production performance or fillet fatty acid composition. Poultry byproducts were able to replace fish meal and fish oil while maintaining production performance of largemouth bass, however, the altered fatty acid profiles of the feeds were reflected in the fillets. Finishing diets containing high levels of fish oil were implemented to restore n-3 and LC PUFA concentrations in the fillet. Twelve weeks of finishing proved suitable to partially restore n-3 and LC-PUFA concentrations while limiting the overall use of marine resources in the largemouth bass production cycle.
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Langevin, Karolanne. "Fatty Acids Profiles of Yellow Perch (Perca flavescens) in Lakes of the Outaouais Region with and without Largemouth Bass (Micropterus salmoides) and Smallmouth Bass (Micropterus dolomieu)." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35366.
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Fatty acids (FAs) are used as trophic markers in aquatic food web studies, but few studies have quantified individual variability in FAs profiles over several sites in a range of conditions. I investigated whether FAs profiles of yellow perch (YP), Perca flavescens, vary with body size and between lakes with and without largemouth (Micropterus salmoides), and smallmouth bass (Micropterus dolomieu), the most common and abundant piscivores in lakes of the region. I analyzed the FAs of YP as well as zooplankton, benthic invertebrates, and prey fish collected from eight lakes where bass were either present or absent in the Outaouais region over the summer of 2016. I compared the growth rate of YP between the lakes and the YP in lakes without bass exhibited a slower growth rate. I also compared the FA signatures of YP using redundancy analysis (RDA). 23 FAs could be identified and quantified. FAs profiles were dominated by palmitic- (16:0), oleic- (18:1), stearic- (18:0), and palmitoleic acid (16:1). The RDA analysis based on FAs profiles of YP revealed variation along two main gradients (the presence of bass and the date of capture). The first two eigenvectors accounted for 42.1% of the variation (RDA1=27.6% and 2=14.6%). Arachidonic (20:4) and docosatrienoic (22:3) were the most correlated FAs with RDA1. Due to the sampling period, it was impossible to determine if the observed effects were due to the date of capture, the presence of bass, or a change in metabolism, but the last two were deemed as the most plausible explanations. It was concluded that the utility of FA signatures to quantify diet in natural environments is limited and that FAs might be more successful as markers in primary consumers and other lower trophic levels. It is recommended that a combination of FAs, stable isotopes, and modelling should be used in the future.
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LeGates, Sarah. "Modulation of Intraoral Subambient Pressure and Feeding Behavior Relative to Prey Type in the Largemouth Bass, Micropterus Salmoides Floridanus." TopSCHOLAR®, 2006. http://digitalcommons.wku.edu/theses/291.
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Variation, or modulation, of suction feeding performance across two prey location treatments, as measured by peak subambient pressure generation, was studied in the Florida largemouth bass, Micropterus salmoides floridanus. Previous studies of suction feeding in centrarchids have excluded possible sources of performance variation to minimize the modulatory response. Florida bass are known to modulate their feeding kinematics when exposed 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 Palaemonetes sp. shrimp in an open water (elusive) setting and in a vegetated (non-elusive) setting were found to generate significantly different amounts of suction during prey capture (Fli48=5.676, p=0.021). Principal component analysis of variables derived from high speed digital video footage found that the suite of behaviors associated with the feeding strike also differed across prey location treatments. Bass feeding on open water prey approached at higher velocity, exhibited faster cranial kinematics, and generated larger values of suction force, while bass feeding on vegetated prey approached more slowly, had slower cranial kinematics, and generated smaller values of suction. Florida bass clearly modulate their repertoire of feeding activities in response to differing
prey capture conditions.
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Nellis, Shelley. "EFFECTS OF ALTERNATIVE PREY AS A BUFFER TO PREDATION OF CHANNEL CATFISH (ICTALURUS PUNCTATUS) BY LARGEMOUTH BASS (MICROPTERUS SALMOIDES)." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/129.
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Channel catfish have pectoral spines that lock to defend against gape-limited predators such as largemouth bass. Previous work indicated that spines increase survival of channel catfish exposed to bass but did not determine whether bass avoid catfish if less dangerous species are available. We presented bass with channel catfish and two alternatives, bluegill and goldfish, and compared order of ingestion, ingestion time, percent of successful strikes, and time spent chasing each prey species. We also presented the three species in a jar study that standardized position in the water column as well as in a net-pen study. The order of ingestion was suggestive of a preference for goldfish, then bluegill and finally channel catfish. Handling time was greater for channel catfish, less for bluegill, and the least for goldfish. Fewer catfish were eaten when other prey were available. Bass appear to avoid channel catfish if alternative prey is available.
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Muller, Jennifer Keene. "An evaluation of dosing methods and effects of p,p'-DDE and dieldrin in Florida largemouth bass (Micropterus salmoides floridanus)." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001107.
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WANJALA, BENNY SIMBA. "THE RELATIONSHIP OF MOVEMENT TO FEEDING OF LARGEMOUTH BASS, MICROPTERUS SALMOIDES (LACEPEDE 1802) IN ALAMO LAKE, ARIZONA (TELEMETRY, TRACKING, TAGGING)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/188020.
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A study of the feeding and movement patterns of largemouth bass in Alamo Lake, Arizona, using stomach analysis, ultra-sonic telemetry and echo-location revealed that feeding is an important determinant of the behavior of individuals and of their composition. The diurnal foraging activity showed a circadian rhythm associated with dawn, dusk, and mobility of prey. The size and type of prey consumed was largely influenced by the size and hunger state of the predator and by the prevailing environmental conditions. All sizes of bass fed mostly on shad, but the quantities consumed were influenced by the avail- ability of alternate prey and location of shad. Foraging mode and habitat selection were influenced by size and shape of bass and their metabolic requirements, whereby, the juveniles ( ≤ 25.0 cm) and adults ( ≥ 40.7 cm) haunted the littoral zone, but the medium size bass (25.1 - 40.6 cm) occupied the limnetic zone. The diel movements of feeding caused segregation of sizes which in turn enhanced their utilization of the more abundant resources at the most opportune times. For example, during floods, bass moved en masse into the littoral zone to feed on the abundant food caused by allochthonous enrichment, but during draw-down, only the medium size bass migrated into the deeper waters to seek out the limnetic shad leaving the juveniles and larger adults in the littoral zone. Although the movements and feeding of largemouth bass in Alamo Lake may not be thoroughly explained by any single environmental factor, of the variables measured, water temperature, oxygen and turbidity seem to be the most important. Likewise, the high perennial production of bass in the lake may not be attributed solely to (1) the enormous addition of allochthonous nutrients during floods, (2) the concentration of prey during the draw-down, or (3) a high primary production that, in turn, sustains a high secondary production, but to a combination of all these variables interacting in different ways during different seasons.
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Magoro, Mandla Leon. "Predation by alien largemouth bass, Micropterus salmoides Lacepéde 1802 (Centrarchidae: Perciformes), on indigenous marine fish species in the Kowie System, South Africa." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1011939.
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Estuaries serve as nursery areas for a large number of estuary-associated fish species. Some of these taxa also use river catchments as nursery areas. During the upstream migration of this latter group, the juveniles are prone to predation by native and alien predatory fish inhabiting the system. The rate of invasion of ecosystems by alien organisms can be directly linked to anthropogenic influences, including both intentional and unintentional introductions by alien organisms into new regions. The largemouth bass, Micropterus salmoides, is a facultative piscivorous fish that has been successfully introduced worldwide for the main purpose of sport fishing. Where introduced, it has been found to negatively impact native fish and invertebrate species through predation, competitive exclusion and displacement of indigenous fish species. The aim of this thesis was to investigate the predatory impact of largemouth bass on the estuary-associated Cape moony Monodactylus falciformis, Cape stumpnose Rhabdosargus holubi and freshwater mullet Myxus capensis in the lower Kowie River of the Eastern Cape Province, South Africa. A combination of approaches was employed during this study. Stomach contents, stable isotopes and fatty acid analyses were employed for the reconstruction of the diet of largemouth bass. Acoustic telemetry was used to elucidate largemouth bass movements, particularly their ability to enter the upper reaches of the Kowie Estuary. Stomach contents and stable isotopes analyses showed that M. salmoides exhibit an ontogenic shift in diet, with small and medium sized individuals consuming the higher proportion of fish prey, while large sized individuals mostly consumed invertebrates such as crabs (Potamonautes sidneyi) and Odonata larvae, while consuming only a small proportion of estuary-associated fish. Fatty acid analysis only showed a direct connection between the fatty acid profiles of largemouth bass and those of M. capensis and M. falciformis. The acoustic telemetry results indicated that some M. salmoides individuals periodically move into the upper reaches of the estuary following river flood events. The results obtained from all these approaches highlight the risk posed by largemouth bass introductions on indigenous fish species, particularly those that enter the areas occupied by these top predators.
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Lee, Jessica A. "Drying Times: Integrating Citizen Science to Examine Survival of Florida Largemouth Bass in a Coastal Refuge Habitat." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/1854.
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In aquatic systems refuge habitats increase resistance to drying events and are necessary for maintaining populations in disturbed environments. However, reduced water availability and altered flow regimes threaten the existence and function of these habitats. To test refuge function I conducted a capture-mark-recapture (CMR) study, integrating citizen science angler sampling into fisheries-independent methods. The objectives of this study were twofold: 1) To determine the contribution of citizen science anglers to improving CMR research, and 2.) to quantify apparent survival of Florida Largemouth Bass, Micropterus salmoides floridanus, in a coastal refuge habitat across multiple years of drying severity. The inclusion of angler sampling was determined to be an effective and feasible method for increasing capture probability. Apparent survival of Florida Bass varied among hydrologic periods with lowest survival when marshes functionally dried (< 10 cm). Overall mortality from drying events increased with the duration of marsh drying upstream.
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Pham, Robert Tran. "Identification and characterization of a major hepatic glutathione S-transfase [sic] isoenzyme in largemouth bass (Micropterus salmoides) that conjugates 4-hydroxynon-2-enal." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0002784.
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Redfern, Julia. "Effects of Maternal Stress and Cortisol Treatment on Offspring Anxiety Behaviour and Stress Responses In Zebrafish (Danio rerio) and Largemouth Bass (Micropterus salmoides)." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35332.
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In fish, maternal stress prior to spawn has been reported to have effects on offspring phenotype. Cortisol, the main glucocorticoid (GC) stress hormone, has been proposed as a potential mediator of such effects because of its organizational role in early teleost development. The present thesis tested whether maternal social stress or treatment with cortisol (as a proxy for maternal stress) prior to spawn affects the cortisol response to stress and anxiety-related behaviours in offspring. In zebrafish (Danio rerio), offspring of dominant females exhibited greater boldness at 6 days post-fertilization (DPF). Interestingly, offspring of females that engaged in social interactions, regardless of the resulting social status of the two females, exhibited greater survival at 1 DPF, a greater fear-related decrease in activity in response to bright light at 6 DPF, and decreased baseline whole-body cortisol content at 0 and 30 DPF. A field experiment with wild largemouth bass (Micropterus salmoides) revealed that maternal cortisol treatment prior to spawn also affected offspring phenotype; offspring of cortisol-treated females had higher masses right after hatch, had greater fear responses, were less bold and less anxious, and exhibited an attenuated cortisol response to an acute stressor. Together, the results of the present thesis suggest that effects of maternal stress prior to spawn on offspring survival, growth, responses to stress, and anxiety-related behaviours are mediated, at least in part, by elevated maternal cortisol but not likely via increased deposition of maternal cortisol into eggs. The effects of maternal stress and cortisol treatment on offspring reported in the present thesis also suggest that maternal stress may prime offspring with adaptive traits to better survive in a stressful environment.
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Bean, Adam. "A Statistical, Genetic, and Molecular Approach for Establishing Largemouth Bass (Micropterus salmoides) strains for Rapid Growth to 1.5 Pounds in the North Central Region." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2165.
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Largemouth bass (Micropterus salmoides) have increasingly become more popular as a food fish within the aquaculture industry. With growing popularity comes the desire to improve growth rates for the current stocks, specifically the ability to reach market size (1.5lbs) more quickly. This research aims to establish a predictive model for largemouth bass growth to 1.5 pounds, evaluate the distribution of polymorphisms in insulin-like growth factor (IGF) genes among North Central Region (NCR) largemouth bass stocks and supply hatcheries, and correlate IGF gene polymorphisms to growth and gene expression using populations having differing genetic profiles. For objective 1 a predictive Bayesian hierchical model was established using wild populations demonstrating the ability to predict growth to 1.5 lbs. Objective 2 determined if the IGF-I and IGF-II genetic profile of populations available to North Central Region (NCR) growers differed greatly from what was previously described in identified populations of interest for a growth trial. In objective 3, it was observed that IGF I and IGF II expression in the skeletal muscle of fast growing largemouth bass was lower than slow growing bass, and there was a significant (r2=.59928, p=.0031) negative correlation between weight and IGF II expression. Overall, this research shows that, with proper data collection, a predictive model can be used to show which available populations may reach market size fastest, that the current gene pool has room for improvement through introduction of important, currently absent alleles, and that IGF-II may be an important biomarker for growth in largemouth bass. These findings are the starting point for future research and give NCR growers selection tools to begin improving growth rate and reduce time to market.
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Johnson, Kevin George. "Dietary exposure to organochlorine pesticides p,p'-DDE and dieldrin and their effects on steroidogenesis and reproductive success in Florida largemouth bass (Micropterus salmoides floridanus)." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010621.
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Perret, Alexander James. "A MULTI-SCALE APPROACH TO EVALUATE THE EFFECT OF THE INVASIVE AQUATIC PLANT HYDRILLA (HYDRILLA VERTICILLATA) ON LITTORAL ZONE HABITAT OF JUVENILE LARGEMOUTH BASS (MICROPTERUS SALMOIDES)." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11012007-151122/.
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Two experiments were conducted to investigate the hypothesis that exotic macrophytes alter littoral zone habitat and impact fish that inhabit these areas. The pond experiment was conducted to explore impacts of exotic invasive plants on growth and condition of juvenile largemouth bass (Micropterus salmoides). The second experiment was conducted at a smaller scale in aquaria to simulate an invasion of hydrilla (Hydrilla verticillata) and its influence on juvenile bass foraging. Fish experienced slower growth in the hydrilla treatment than in the diverse, and the ability of bass to capture prey fish was impeded in hydrilla. Juvenile bass growth decreased in habitats containing hydrilla and is likely a result of increased difficulty in capturing quality prey items such as small fish. Results from the two experiments collectively supported my hypothesis that hydrilla growth altered the littoral zone habitat such that foraging was hindered and resulted in slower growth.
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Sims, Derek W. "Effects of feed training methods and light intensity on survival and feed training success of largemouth bass Micropterus salmoides and effectiveness of new bird repellant devices in an aquaculture setting /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1453204691&sid=3&Fmt=2&clientId=1509&RQT=309&VName=PQD.
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Gilliland, Kenneth Lee. "THE PRESENCE OF MICROPTERUS SALMOIDES (LARGEMOUTH BASS) INFLUENCES THE POPULATIONS OF RANA DRAYTONII (CALIFORNIA RED-LEGGED FROG) AND PSEUDACRIS REGILLA (PACIFIC TREEFROG) IN TWO PONDS IN SANTA BARBARA COUNTY, CALIFORNIA." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/244.
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Alien fish have been implicated in the decline of Rana draytonii (California red-legged frog) and Pseudacris regilla (Pacific treefrog) populations. Micropterus salmoides (largemouth bass) is a common sport fish that has been introduced into the sympatric range of these two anuran species; however, no studies have investigated the individual influence that this alien fish has on these two species. I conducted M. salmoides control or eradication experiments during a four year study in two ponds within the Transverse Mountain Range of Santa Barbara County, California. Changes in the densities of all life stages of R. draytonii and P. regilla were assessed through repeated visual encounter surveys. In response to the manipulations of the M. salmoides populations there was an increase in the density of both species. For R. draytonii, this salient increase in density was recorded in the larval and metamorph life stages. For P. regilla, a slight, yet steady increase in the density of adult, metamorph, and larval life stages was recorded. My results suggest that M. salmoides can be controlled or eradicated from lentic waterbodies and provides reasonable evidence that the negative effects of this species on R. draytonii and P. regilla populations can be minimized or reversed. The reversal of these effects may translate into increases in the densities and potential recruitment of these two native anurans. Therefore, my results provide tentative support that the control or eradication of M. salmoides where they cohabitate with these two species may be a viable conservation measure for R. draytonii and P. regilla populations. Since my study was performed at a very local scale and all results are strictly observational and descriptive, additional studies should be performed at a larger spatial scale and buttressed with controlled laboratory and field enclosures experiments to identify the causal factors responsible for the identified patterns.
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Tucker, Andrew J. "The role of ultraviolet radiation in mediating warmwater fish invasion in transparent lakes." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1304020369.
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Dairiki, Jony Koji. "Exigência em lisina pelo "black bass" Micropterus salmoides." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-19072005-144759/.
Full textAbstract:
Os elevados custos atribuídos à nutrição na piscicultura ligam a eficiência alimentar ao sucesso da atividade e à redução do impacto ao meio ambiente. Estudos sobre a nutrição e determinação de exigências nutricionais em aminoácidos são, portanto, ferramentas importantes para a consolidação da piscicultura comercial racional e com viabilidade econômica. A determinação da exigência em lisina para o black bass Micropterus salmoides foi feita em ensaio de dose-resposta e os dados coletados foram analisados por meio de três modelos estatísticos: regressão polinomial, regressão segmentada e modelagem matemática específica, para estimar a utilização e exigência dos aminoácidos. Foi utilizada a relação A/E = [(aminoácido essencial ÷ total de aminoácidos essenciais + cistina + tirosina) x 1.000], para estimar as exigências nutricionais dos demais aminoácidos essenciais em relação à lisina determinada no experimento dose-resposta. As unidades experimentais foram constituídas por lotes de 25 alevinos de black bass (1,29 ± 0,03 g; 4,35 ± 0,17 cm) condicionados a aceitar ração seca, alojados em gaiolas de PVC atóxico (abertura de malha 5 mm) com capacidade de 60 L e instaladas em caixas de polipropileno com capacidade de 1.000 L, com troca parcial de água num sistema fechado de recirculação e aeração. Os tratamentos correspondiam aos níveis crescentes de lisina: 1,0; 1,5; 2,0; 2,5; 3,0 e 3,5% na dieta n=4), num delineamento inteiramente aleatorizado (DIA). O modelo estatístico da regressão segmentada foi o modelo mais apropriado para determinação da exigência dietética de lisina para os alevinos de black bass em experimento dose-resposta. A exigência dietética em lisina para peso final, ganho de peso e taxa de crescimento específico foi de 2,1% da dieta ou 4,9% da proteína dietética. A exigência dietética de 1,69% de lisina na dieta ou 3,9% de lisina na proteína condicionou o melhor índice de conversão alimentar. O uso do perfil de aminoácidos corporais do black bass foi adequado como referência para estimar as exigências nutricionais de aminoácidos.Adequate nutrition of fish stocks interconnects fish feeding efficiency, profitability and mitigation of environmental impact of fish farming. Knowledge on amino acids requirement of farmed fish boosts rationalization and profitability of fish farming systems. This study compares estimation of amino acids requirements of largemouth bass Micropterus salmoides from data of lysine dose-response trials, analyzed through different statistical models: polynomial regression, broken-line analysis and specific mathematical modeling. Amino acids requirements were estimated through the A/E relationship [A/E = (essential amino acid ÷ total essential amino acids + cystine + tyrosine) x 1.000]. Groups of 25, feed-conditioned largemouth bass fingerlings (1.29 ± 0.03 g; 4.35 ± 0.17 cm), were stocked in 60-L cages (5 mm mesh) placed in 1,000-L plastic, indoor tanks, closed circulation system, and fed diets containing 1.0, 1.5, 2.0, 2.5, 3.0, or 3.5% lysine, in a totally randomized experimental design trial (n = 4). The broken-line analysis method yielded more reliable and precise estimations of lysine requirements 2.1% of diet or 4.9% dietetic protein for final weight, weight gain and specific growth rate. Best feed conversion ratio was attained with 1.69% lysine in the diet or 4.9% lysine in dietetic protein. Body amino acids profile was an adequate reference for estimation of largemouth bass amino acids requirements.
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Sakmar, Josh. "Molecular Technologies in the Science and Policy of Florida Largemouth Bass Micropterus floridanus Management in Florida." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4839.
Full textAbstract:
Advances in molecular technologies have provided conservation biologist with the opportunity to quantify the genetic structure of a population and, in turn develop management guidelines and policies aimed at preserving the genetic diversity of fish stocks challenged by human activities. This thesis examines the status of genetics as applied to the management of freshwater fisheries by state natural resource agencies with a purpose of understanding the keys to a successful genetics program. An online survey was used to investigate the breadth of molecular marker application to freshwater fisheries management by state natural resource departments. Seven questions were posed to 50 state agencies addressing species of concern, type of genetic resources used, type of molecular marker used, and management concerns. Genetics was listed as a concern in the management of 18 freshwater fish families representing 70 distinct species, with Salmonid species the most frequently reported (20%#37;). A majority of agencies rely on outside resources to perform genetics testing (65%#37;). The most common analysis technique used by state agencies was microsatellite DNA analysis (35%#37;) and the most frequently reported management concerns were genetic stock identification and management boundaries (23%#37;). The application of a specific molecular technology to a conservation question was addressed by investigating the mechanisms of unnatural selection in the form of a study of trait heritability. Microsatellite parentage analysis was used to reconstruct familial relationships of juvenile Florida bass (Micropterus floridanus) displaying variable traits of growth and aggressiveness in a culture setting. Differences in the parentage of high growth and aggression (HGA) and baseline growth and aggression (BGA) offspring showed that certain parent-pairings contribute disproportionally to certain size classes and levels of aggression. These results suggest that the selective pressures of recreational harvest may negatively impact the fitness of wild fish stocks. Overall, this work provides natural resource managers with the basic information required to successfully develop and employ strategies aimed at preserving the genetic integrity of freshwater fisheries.
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Selvaraj, Tamilselvi. "Environment-induced Phenotypic Plasticity in the Teeth of Hatchery and Wild Largemouth Bass, Micropterus floridanus." TopSCHOLAR®, 2010. http://digitalcommons.wku.edu/theses/200.
Full textAbstract:
Successful stock enhancement of hatchery-reared fish depends heavily on the release of individuals able to demonstrate strong survival skills. Overall survival of fishes is a reflection of a successful blend of physiology, anatomy, and behavior. With fishes being highly phenotypically plastic, the potential exists for all aspects of hatcheryreared fish to vary significantly from their wild counterparts while having potentially adverse effects on their survival after release. Previous analyses have demonstrated significant differences between the feeding behavior of hatchery-reared and wild caught largemouth bass (Micropterus floridanus) in the laboratory, as well as differences in the development of the skull between these two groups. The aim of this study was to determine if oral and pharyngeal jaw dentition differed between hatchery and wild bass. Scanning electron micrographs of the oral and pharyngeal jaws from an overlapping size range of 30 hatchery-reared and 30 wild bass were compared for the number and characteristics of oral and pharyngeal teeth. Wild bass were found to have features which would presumably allow more efficient capture of prey. The results of the study suggested that wild bass exhibited greater number of teeth when compared to hatchery reared bass. They also exhibited oral and pharyngeal teeth which were greater in length, and pharyngeal teeth that were greater in width when compared to hatchery-reared bass. This deficiency in dentition could have a significant effect on prey-capture success when introduced into the wild. We suggest that exposure to wild prey during the grow-out phase of aquaculture could provide the necessary adaptive plasticity of hatchery-reared bass dentition
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Oliveira, Ana Maria Barretto de Menezes Sampaio de. "Substituição de fontes protéicas de origem animal por fontes protéicas de origem vegetal em rações para o "Black Bass" Micropterus salmoides." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11139/tde-25092003-082811/.
Full textAbstract:
A produção comercial de peixes carnívoros exige o uso de um conjunto complexo de práticas de manejo da produção e alimentação, à redução do impacto ambiental dos alimentos e à minimização do emprego de fontes protéicas de origem animal nas formulações das dietas. O objetivo do presente estudo foi investigar o uso de atrativos alimentares em dietas formuladas exclusivamente à base de proteína de origem vegetal (PV), e seus efeitos no desempenho, composição corporal e digestibilidade das dietas pelo carnívoro black bass, Micropterus salmoides, condicionados a aceitar ração seca. Novecentos juvenis (26,54 ± 1,53 g) foram estocados em 60 aquários de polietileno de 90 L (15 peixes/aquário), em delineamento experimental totalmente ao acaso (n=3), e alimentados ad libitum em duas refeições diárias (07h00m e 17h00m), durante 13 dias, com uma dieta basal (100% PV) contendo seis níveis de proteína solúvel de peixe PSP (0,5, 1,0, 1,5, 2,0, 2,5 e 3,0%); Fisharom ® FA (0,02, 0,04, 0,06, 0,08, 0,10 e 0,12%); silagem de peixe SP (1,0, 2,0, 3,0, 4,0, 5,0 e 6,0%); um controle positivo (10% de farinha de peixe) e um controle negativo (dieta basal sem atrativos). Os peixes alimentados com a dieta contendo FA 0,02% apresentaram melhor taxa de crescimento, ganho de peso e conversão alimentar, mas não apresentaram diferenças dos demais tratamentos (P>0,05). Os peixes alimentados com dietas contendo SP como atrativo apresentaram os piores resultados de desempenho. Em uma segunda etapa, foi avaliado o desempenho e a composição corporal de 560 juvenis (3,06 ± 0,20 g) estocados em gaiolas de 60 L, dentro de caixas de polietileno de 1.000 L, instaladas em laboratório com um sistema fechado de recirculação de água com temperatura (27 o C ± 1,07 o C) e fotoperíodo (14L:10E) controlados, em um delineamento experimental totalmente ao acaso (n=4), e alimentados ad libitum em duas refeições diárias (07h00m e 17h00m), durante 43 dias, com 7 dietas isonitrogenadas (40% de PB) e isocalóricas (3.500 kcal/kg), contendo níveis decrescentes de proteína de origem vegetal: 100PV:00PA; 100PV + 0,02% Fisharon ® ; 80PV:20PA; 60PV:40PA; 40PV:60PA; 50PV:50PA (sem farinha de peixe); e uma dieta controle (ração comercial). A inclusão de farinha de peixe e farinha de penas foi limitada em 7%; a inclusão de farinha de vísceras e farinha de carne em 15%. DL-metionina (98%) e L-lisina (80%) foram adicionadas automaticamente através de matriz de aplicativo de formulação de ração. Em uma terceira etapa, foi avaliada a digestibilidade das rações utilizadas no experimento anterior. Para tanto, 1.960 juvenis (14,0 ± 1,0 cm) foram confinados em gaiolas de polipropileno e alimentados durante 40 dias, no período diurno, com as sete dietas do experimento anterior acrescidas de 0,5% de óxido de cromio. No período noturno as gaiolas eram transferidas para aquários cilíndrico-cônicos de 200 L, onde as fezes eram coletadas por sedimentação em recipiente refrigerado. O farelo de soja pode ser utilizado como substituto parcial de fontes protéicas e origem animal em rações formuladas para o black bass; a farinha de vísceras pode ser considerada uma boa opção como fonte protéica de origem animal em rações. Os melhores resultados de desempenho foram relacionados aos tratamentos controle e 50PV:50PA. A necessidade do uso da farinha de peixe na formulação de dietas para espécies carnívoras é no mínimo questionável e a determinação da digestibilidade das rações, visando maior precisão em formulações de custo mínimo para peixes carnívoros, deve ser prática corrente na indústria da alimentação de peixes.Commercial farming of carnivorous fish demands the use of a complex group of practices of production and feeding management, the reduction of the environmental impact of the feeds and the minimization of the use of animal protein sources in the diets. The present study investigated the use of feed stimulants in diets formulated exclusively out of plant protein, and their effects in growth performance, body composition and digestibility of the feeds for the carnivore largemouth bass, Micropterus salmoides, conditioned to accept dry feed. Nine hundred juvenile largemouth bass (26.54 ± 1.53 g) were stocked in 60, 90-L polyethylene aquaria (15 fish/aquarium), in a totally randomized experimental design (n=3). Fish were fed ad libitum two daily meals (0700 and 1700), for 13 days, with a basal diet (100% plant protein) containing increasing levels of fish soluble protein FSP (0.5, 1.0, 1.5, 2.0, 2.5, and 3.0%); Fisharom TM FA (0.02, 0.04, 0.06, 0.08, 0.10 and 0.12%); fish silage FS (1.0, 2.0, 3.0, 4.0, 5.0 and 6.0%); a positive control (10% of fish meal) and a negative control (basal diet without stimulants). Fish fed the diet containing 0.02%FA presented better growth rate, weight gain and feed conversion rate, but did not differ from the other treatments (P>0,05). Fish fed diets containing FS as stimulant presented the poorest performance. Next, the effect of different levels of dietary plant protein in the performance and body composition of the species was evaluated. Five hundred and sixty juvenile largemouth bass (3.06 ± 0.20 g) were stocked in 60-L cages, inside 1,000-L polyethylene tanks, installed at a laboratory with closed water-recirculating system and controled temperature (27 o C ± 1.07 o C) and photoperiod (14L:10D). Fish were fed ad libitum two daily meals (0700 and 1700), for 43 days, with 7 isonitrogenous (40% of PB) and isoenergetic (3,500 kcal/kg) diets, containing decreasing levels of plant protein: 100PP:00AP; 100PP + 0.02% Fisharom®; 80PP:20AP; 60PP:40AP; 40PP:60AP; 50PP:50AP (without fish meal); and a control diet (commercial feed). Inclusion of fish meal and feathers meal was limited to 7%; the inclusion of poultry by-product meal and meat and bone meal to 15%. DL methionine (98%) and L-lysine (80%) were added automatically through feed formulation software matrix. Trial was set up in a totally randomized experimental design (n=4). Finally, digestibility of the diets used in the experiment 2 was studied. One thousand, nine hundred and eighty juvenile largemouth bass (14.0 ± 1.0 cm) conditioned to accept artificial, dry feed were confined in polypropilene cages and fed, for 40 days, in day time, with the seven experimental diets added of 0.5% of cromic oxide. In the night, cages were transferred to cylindrical-conical bottomed, 200-L aquaria, where feces were collected by sedimentation into refrigerated containers. Data were submitted to the ANOVA and Tukeys test of comparison of means through statistical software package SAS (P=0.05). Soybean meal can be used as partial substitute of animal protein in diets for largemouth bass; the poultry by-product meal shows as a good option as animal protein source in these rations. Best performances were related to the control treatments and 50PP:50AP; the need for the use of fishmeal in the formulation of diets for carnivorous species is, at least, questionable. Results of the digestibility trials demonstrated the importance of determining the digestibility of the rations, if precision in the formulation of least-cost feeds for carnivorous fish is the ultimate goal.
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Post, David M. "Recruitment variability in largemouth bass, Micropterus salmoides, and its role in food web dynamics." 1996. http://catalog.hathitrust.org/api/volumes/oclc/36375095.html.
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Essington, Timothy Edwin. "Spatial dynamics, stage-structure, and the predator-prey interactions of largemouth bass (Micropterus salmoides)." 1999. http://catalog.hathitrust.org/api/volumes/oclc/43304477.html.
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BOŇKO, Dominik. "Intenzivní chov okounka pstruhového (Micropterus salmoides) v RAS s různým světelným režimem." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-396078.
Full textAbstract:
Largemouth bass (Micropterus salmoides) is one of the species of fish that don´t have a significant position among the species of fish breeded in Czech Republic. However the trend of building aquaculture recirculation systems with warm water comes to the fore. Breeding in these conditions opens up the possibility of introducing new kinds of thermophilic fish species. Largemouth bass definitely belongs to this group. The general factors of successful breeding of largemouth bass are the temperature and purity of the water, the suitable-composed diet and the correct stocking density. This work studies another factor that not only participates in the success of the breeding, but also has influence on the energy expenses of the aquaculture system. It is the effect of photoperiod during breeding. Five experimental groups with three repetitions were created according to the time of lighting (8, 12, 16, 20 and 24 hours of light a day). The experiment lasted 16 weeks. The average water temperature was 24,6 °C. The initial stocking density for all tanks was 20.6 kg . m-3. Fish had an initial average weight of 32.6 +- 2.1 grams. The feed ration was set up at 1% of biomass per day. As a diet were used a floating dry pellets Skretting R-2 Europa 15 F of 2 mm. The feed contained 55 % of protein and 16 % of fat. Fish were fed manually by hand. All groups showed high survival during the experiment (99.4 - 100 %). The best results were achieved by a group of 8 hours with the highest feed conversion (FCR = 0.94 +- 0.06) and the highest growth rate (SWGR = 0.6 +- 0.04 % . day-1). The average individual fish weight of the 8 hour group at the end of the experiment was 64.07 +- 2.82 g. On the other hand, group of 12 hours was the worst with the lowest average individual weight (W= 57.51 +- 1.51 g), growth rate (SWGR = 0.49 +- 0.04 % . day-1) and the lowest feed conversion (FCR = 1.16 +- 0.08). These two groups were significantly different in most production indicators. The pervisceral fat index grew with biomass. The longer the photoperiod, the higher the plasma and ammonia content of lactate. In contrast, glucose content decreased. A longer photoperiod also influenced the higher production of antioxidants.
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Li, VERA. "Physiological and Behavioural Responses of Largemouth Bass Yearlings (Micropterus salmoides) to Hypoxia at Summer and Winter Temperatures." Thesis, 2008. http://hdl.handle.net/1974/1554.
Full textAbstract:
The main objective of this thesis was to determine the metabolic and behavioural outcomes from hypoxia exposure to largemouth bass (Micropterus salmoides) yearlings when acclimated to either winter (5°C) or summer (20°C) temperatures. This was achieved by exposing largemouth bass to varying levels of hypoxia and subsequently quantifying metabolites, in addition to observing behavioural patterns. The critical partial pressure of oxygen was also determined for fish at both temperatures.
Hypoxia experiments revealed that metabolite concentrations increased or decreased significantly compared to control values as hypoxia levels intensified at 20°C, however there were minimal changes for fish at 5°C. More specifically, end product concentrations of lactate increased, while substrate concentrations of ATP, PCr and glycogen decreased and glucose concentrations did not change significantly at 20°C. It was also found that the magnitude of change was greater for fish at 20°C, indicating the impact of hypoxia is greater at warmer temperatures. In addition, it was noted that hypoxia experiments performed at either identical percent oxygen saturation (%) or identical dissolved oxygen (mg/L) resulted in very similar metabolite trends at both temperatures.
In terms of behaviour, ventilation rates increased significantly and peaked at 2mg/L for largemouth bass at 20°C, however there was no change for fish at 5°C. There were also more instances of aquatic surface respiration with increasing hypoxia for fish at 20°C, but nearly no attempts at 5°C.
Critical partial pressure of oxygen (Pcrit) values were calculated to be 1.36 ± 0.02 mg/L (16% oxygen saturation) for 20°C and 0.77 ± 0.04 mg/L (5% oxygen saturation) for 5°C fish respectively. The Pcrit levels corresponded to the hypoxia levels that initiated changes in metabolite concentrations at each temperature, thus indicating that largemouth bass undergo anaerobic metabolism.
This study shows that the overall impact of hypoxia on largemouth bass yearlings was much greater in warmer water. These results indicate that hypoxia may become a very important physiological stress on younger life stages of fish as water temperatures increase with climate change.Thesis (Master, Biology) -- Queen's University, 2008-10-16 16:27:56.732
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Ngai, Ka Lai Christine. "Potential effects of climate change on the invasion of largemouth bass (Micropterus salmoides) in Lake Tahoe, California-Nevada." 2008. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=771964&T=F.
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HANZLÍK, Petr. "ADAPTACE A INTENZIVNÍ CHOV OKOUNKA PSTRUHOVÉHO (Micropterus salmoides) V POROVNÁNÍ S INTENZIVNÍM CHOVEM CANDÁTA OBECNÉHO (Sander lucioperca)." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-376551.
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The object of this thesis is to verify Largemouth bass (Micropterus salmoides) as an alternative species to Pikeperch (Sander lucioperca) for fish farming in RAS (Recirculating Aquaculture Systems). Largemouth bass with its good meat quality is comparable to Pikeperch and with its lower sensitivity to stress related to RAS conditions could expand the number of species used in intensive aquaculture. This experiment was split to two parts. In the first part was documented adaptation of Largemouth fingerlings to RAS conditions and artificial feed. After successful adaptation, the second part was started the main experiment. Only 9-16g form pieces were picked from the fish from the first experiment.) The Fish were divided into four groups: Candát 100%, Okounek pstruhový 100%, Candát mix, Okounek mix in three repetitions to nine tanks with capacity of 600 l. Dimensions of these tanks are 101x100x59,5 cm. Each tank was settled by 700 fish. In mixed groups were 350 of Pikeperch to 350 of Largemouth bass in each tank. Second part of experiment lasted 60 days. During that time different parameters of water quality were monitored. Twice a day oxygen, water temperature and once a day pH, NO2- , NH4- were monitored. Every day feeding dosage and mortality were counted. At the end of the experiment all fish were weighed piece by piece to find out the percentage frequency of each weight category in 1 g step. From each tank after every part of the experiment 33 pc of fish were selected and the biometrics were made. Monitored parameters were TL,SL,W and FC, FCR, SGR were counted. Evaluation of outcome and comparison of researched groups pointed to next findings. Largemouth bass showed a slightly smaller growing ability than Pikeperch in RAS. We have to consider a lower water temperature to the end value 21,5°C in system which was set because of Pikeperch sensitivity to bacterial infection and the optimum water temperature for Largemouth bass to 26°C. The experiment proved a high survival of Largemouth bass in groups Okounek 100% 99,86% survival, Okounek mix 99,81% survival. Pikeperch in groups Candát 100% and Candát mix did not exceed 97% in survival. An interesting finding of this thesis proved a positive influence of Largemouth bass to the growth of pikeperch. The group Candát mix had the best results in all monitored parameters TL,SL,W and FC, FCR, SGR.
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LI, JIN-CAO, and 黎錦超. "Studies on the infection of nocardia sp. in cultured largemouth bass (Micropterus salmoidesm, Lacepode)." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/54908908600314021528.
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Hinke, Jefferson T. "Trophic interactions of juvenile yellow perch (Perca flavescens) and young-of-year largemouth bass (Micropterus salmoides) the influences of density, size and growth /." 2001. http://catalog.hathitrust.org/api/volumes/oclc/47649112.html.
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Thesis (M.S.)--University of Wisconsin--Madison, 2001.Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaf 72).
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(7469945), Patricia A. Nease. "Nearshore habitat and land-use effects on trophic interactions and growth of largemouth bass and bluegill in Indiana's glacial lakes." Thesis, 2019.
Find full textAbstract:
Glacial lakes, such as those in the Midwest region
of the United States, are ecologically and economically important, and they
provide a wide range of ecosystem services, such as habitat for wildlife and
fishes, flood control and recreational boating. Glacial lakes often support
locally important sport fisheries, such as largemouth bass Micropterus salmoides and bluegill Lepomis macrochirus, which
are partially dependent on suitable habitat within lakes. Nearshore vegetation
is often removed by lakeshore landowners for perceived aesthetics and boat
access, or by area managers as a form of indirect fisheries management and
invasive species control. The connection between nearshore vegetation and fish
population health, though widely studied is somewhat unclear. In the two
research chapters of this thesis we attempted to further understanding of the
environmental factors that influence vegetation abundance and distribution, how
vegetation abundance and distribution influences fish population abundance and
size structure, and how young-of-year (YOY) largemouth bass utilize habitats
within the nearshore environment. In the first research chapter, we used
structural equation modeling (SEM) and data collected by the Indiana Department
of Natural Resources to quantify the complexity of relationships among catchment
characteristics (e.g., catchment size), lake morphology, water quality,
vegetation abundance and distribution, and fish population abundance and size
structure. Across multiple lakes, lake productivity was more influential in
explaining cross-lake variation of largemouth bass and bluegill proportional
stock density (PSD) and largemouth bass catch per unit effort (CPUE) than
vegetation. This may be a result of the feedback between phytoplankton
production and rooted vegetation production. The models we constructed provide
insights into the complexity of environmental variables that influence
nearshore vegetation and fish populations. In the second research chapter we
used stable isotopes (δ13 Carbon, δ15 Nitrogen, δ18
Oxygen and δ2 Hydrogen) to examine the consistency of habitat use
and foraging of YOY largemouth bass within Indiana glacial lakes. We observed
spatial variation in stable isotope ratios of YOY largemouth bass between
habitat types and sites. Additionally, there were significant, positive
relationships between δ13C of locally collected potential prey items
and δ13C of YOY largemouth bass suggesting localized foraging patterns.
Later in the summer, as young bass grew in size and likely switched to
piscivory, we did not observe similar spatial variation in young bass stable
isotopes or spatial relationships between prey and the young bass suggesting
more homogeneous foraging patterns. Understanding the habitat use patterns of
young bass may allow for more efficient and effective management of the
nearshore environment. Overall, a greater consideration for the complexity of
relationships between nearshore habitat and fish populations may facilitate
more effective management.
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Ireland, Patrick Alexander. "Changes in Native Aquatic Vegetation, Associated Fish Assemblages, and Food Habits of Largemouth Bass (Micropterus salmoides) Following the Addition of Triploid Grass Carp to Manage Hydrilla (Hydrilla Verticillata) in Lake Conroe, TX." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8345.
Full textAbstract:
Nuisance aquatic vegetation (mainly Hydrilla Verticillata ) has become problematic in Lake Conroe, TX. Consequently, triploid grass carp (Ctenopharynogodon idella) were stocked at densities sufficient to completely denude the reservoir of all vegetation (invasive and native plants) within one year. As a result, an assessment was designed to investigate the changes (before and after carp stocking) in the plant assemblage among sampling stations, changes in water quality parameters, length frequency and condition changes of Centrachid species, largemouth diet changes, and changes in the fish assemblages among randomly selected sampling stations between early fall 2007, when grass carp were stocked, and one year later in early fall of 2008. The areas for sampling were based upon aquatic vegetation surveys by Texas Parks and Wildlife during 2007 and 2008, thirteen sampling stations were randomly selected using ArcGIS software and the percentage of water surface covered by vegetation was recorded at each station. Within each station, fish were collected by electrofishing the entire station for five minutes; water samples were also collected.
Largemouth bass diet did significantly change for mature (<200 mm-TL) bass as indicated by a chi-square test. Largemouth bass from the samples were shown to consume less sunfish and more shad by the second (post-carp) sample. This is consistent with expected results due to the removal of vegetation consequently eliminating small sunfish habitat. In similar fashion, significant length-frequency changes were seen in the second year as there were fewer smaller (juvenile) Centrachid species found in the sampling sites. Contrary to the Centrachids, length-frequency of gizzard shad significantly decreased in size by the second sampling year.
Based upon the aquatic vegetation surveys within the sampling sites of 2007 and 2008, there was an almost complete elimination of all aquatic plants following carp introduction. This result was consistent with what was expected from the carp introductions. Changes in water quality parameters (phosphorous, nitrate, nitrites, orthophosphate, chlorophyll (a)), were generally inconclusive, with the exception of nitrate which significantly increased by the second year. The water quality parameters along with other measured habitat parameters were used in the multivariate analysis.