Download or read book Ecophysiological Performance of Hatchery produced Red Drum Sciaenops Ocellatus in Culture Ponds and in Texas Coastal Waters written by Robert R. Vega and published by . This book was released on 2003 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interaction of Temperature Dissolved Oxygen and Feed Energy on Ecophysiological Performance of Juvenile Red Drum written by Lance Pierre Fontaine and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The red drum (Sciaenops ocellatus) is important for recreational fishing and aquacultural production in Texas' coastal waters and elsewhere in the nearshore Gulf of Mexico and in subtemperate to subtropical areas of the western North Atlantic Ocean. I performed indoor-tank and outdoor-pond experiments, in conjunction with automa ted respirometry and ecophysiological modeling, to assess interacting effects of temperature, dissolved-oxygen concentration (DO) and feed energy density on survival, growth, metabolism, and other measures of juvenile red drum performance. The main objective was to test an energy/metabolism tradeoff hypothesis, which states that growth of fish exposed to high temperatures can be limited by available feed energy; whereas, growth of fish exposed to lower temperatures can be limited by their metabolic capacity to exploit available feed energy. Also, I examined the influence of DO on this relationship and evaluated the effects of cyclical regimes of temperature and DO on fish performance. Insights from laboratory-based feeding trials were incorporated in experiments conducted in hatchery ponds to assess effects of oxygen supplementation and dietary additives - nucleotides and prebiotics - on performance in a more natural setting. In examining these issues, various technologies were developed. These included a computer-based apparatus for autonomously inducing cyclical regimes of temperature and DO in experimental tanks over an extended period of time. Additionally, I developed a soft feed with low energy-density to simulate natural forage. Experimental results supported the principal research hypothesis: At high temperature and DO, ecophysiological performance of juvenile red drum was enhanced by feeding to satiation with a high-energy feed (15.9 kJ/g) versus with a foragesimulating feed having lower energy density (4.1 kJ/g). Cyclical regimes of temperature and DO - as imposed in my particular laboratory experiments - did not impart growth benefits; however, the potential for enhanced growth via an appropriate cyclical environmental regime remains intact. Results from outdoor-pond experiments were consistent with laboratory results; however, the strong positive effect of feed energy density overwhelmed potential effects of dietary additives or oxygen supplementation on growth.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Evaluation of Specific Ionic and Growth Parameters Affecting the Feasibility of Commercially Producing Red Drum Sciaenops Ocellatus written by William Aldis Wurts and published by . This book was released on 1987 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observed and Modelled Growth of Red Drum in Aquacultural Ponds in the Republic of Panama written by Humberto Arturo Garces Botacio and published by . This book was released on 1991 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cold Tolerance of Red Drum Sciaenops Ocellatus and Thermal refuge Technology to Protect this Species from Cold kill in Aquaculture Ponds written by Paul Wesley Dorsett and published by . This book was released on 1994 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Red Drum Aquaculture written by and published by . This book was released on 1988 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production and Survival of Red Drum Sciaenops Ocellatus Reared in Earthen Ponds at Two Salinities and Two Densities written by Kabongo Armand Mulowayi and published by . This book was released on 1993 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Factors and Production Characteristics Affecting the Culture of Red Drum Sciaenops Ocellatus written by Rowland Glenn Thomas and published by . This book was released on 1991 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Red Drum Aquaculture written by and published by . This book was released on 1988 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Novel Assessment of Red Drum Sciaenops Ocellatus Ovarian Condition for Enhanced Hatchery Management written by Kaitlyn S. O'Neil and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: reproductive cycle develop differently relative to temperature than wild conspecifics. When oocyte diameters were within biologically relevant ranges, coefficients of the stereological equation were found to have little impact on the resulting densities. An individual-level assessment revealed the potential use of biopsy-based assessment in understanding spawning performance. Stereology was time intensive, eliminating its feasibility for real-time hatchery management. Linear regressions showed a strong positive relationship and high correlation between stereological density and volume fraction, presenting volume fraction as a viable replacement for stereological density in this context. Effort comparison showed significantly greater time required for stereology, with volume fraction requiring almost five times less effort. Data and ovarian developmental classifications generated here will aid to identify conditions that improve captive spawning. These findings also suggest that volume fraction, as a measurable metric for female ovaries, has the potential to enhance hatchery management of red drum.

Download or read book An Integrated Study of Dietary Lipid Manipulation and Thermal refuge Technology for Overwintering Red Drum Sciaenops Ocellatus in Outdoor Ponds written by Ronald Scott Boren and published by . This book was released on 1995 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dietary Manipulation of Lipid Deposition and Cold Tolerance in Juvenile Red Drum Sciaenops Ocellatus written by Steven Rea Craig and published by . This book was released on 1994 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The effect of dietary nutrient density on water quality and growth of red drum Sciaenops ocellatus in closed systems written by David Otis Jirsa and published by . This book was released on 1994 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Routine Metabolism and Critical Oxygen Concentration for Juvenile Red Drum Sciaenops Ocellatus as Functions of Water Hardness and Salinity written by John Warren Schlechte and published by . This book was released on 1989 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultimate Lower Lethal Temperature of Red Drum Sciaenops Ocellatus as a Function of Water Hardness and Salinity written by Lynne Sue Procarione and published by . This book was released on 1986 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Aquaculture oriented Bibliography of the Red Drum Sciaenops Ocellatus written by C. Greg Lutz and published by . This book was released on 1997 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: