Ecosystem Dynamics of a Microbial Biofloc Community Used to Culture Pacific White Shrimp (Litopenaeus vannamei)
| dc.contributor.advisor | Fitzsimmons, Kevin | en |
| dc.contributor.author | Holstein, Traci Elizabeth | |
| dc.creator | Holstein, Traci Elizabeth | en |
| dc.date.accessioned | 2016-09-27T02:08:39Z | |
| dc.date.available | 2016-09-27T02:08:39Z | |
| dc.date.issued | 2008 | |
| dc.identifier.uri | http://hdl.handle.net/10150/620702 | |
| dc.description.abstract | Microbial biofloc systems are increasingly important to raising Pacific white shrimp (Litopenaeus vannamei), because they efficiently remove wastes produced by high density cultivation and have the potential to provide supplemental nutrition and oxygen to the shrimp population. Gross primary productivity (GPP) and community respiration (RESP) can easily be measured and used to characterize the dominant processes in a system and how they relate to shrimp growth, microbial productivity, and survival. Photoautotrophic, "green water", systems are algal dominated as evidenced by high daytime GPP. By contrast in heterotrophic or chemoautotrophic, "brown water", systems, the respiratory costs exceed the photosynthetic rate even during daylight hours. RESP can also be used to better understand the relative contribution of the microbes and the shrimp to the total oxygen demand of the system. Finally, clarifiers allow cropping of sludge in hopes of promoting algal growth and a "green", photoautotrophic system. | |
| dc.language.iso | en_US | en |
| dc.publisher | The University of Arizona. | en |
| dc.rights | Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. | en |
| dc.title | Ecosystem Dynamics of a Microbial Biofloc Community Used to Culture Pacific White Shrimp (Litopenaeus vannamei) | en_US |
| dc.type | text | en |
| dc.type | Thesis-Reproduction (electronic) | en |
| thesis.degree.grantor | University of Arizona | en |
| thesis.degree.level | masters | en |
| thesis.degree.discipline | Graduate College | en |
| thesis.degree.discipline | General Biology | en |
| thesis.degree.name | M.S. | en |
| dc.description.admin-note | Paper copy found as part of retrospective digitization project; had not been submitted electronically as part of ETD submissions. | |
| refterms.dateFOA | 2018-06-24T18:22:20Z | |
| html.description.abstract | Microbial biofloc systems are increasingly important to raising Pacific white shrimp (Litopenaeus vannamei), because they efficiently remove wastes produced by high density cultivation and have the potential to provide supplemental nutrition and oxygen to the shrimp population. Gross primary productivity (GPP) and community respiration (RESP) can easily be measured and used to characterize the dominant processes in a system and how they relate to shrimp growth, microbial productivity, and survival. Photoautotrophic, "green water", systems are algal dominated as evidenced by high daytime GPP. By contrast in heterotrophic or chemoautotrophic, "brown water", systems, the respiratory costs exceed the photosynthetic rate even during daylight hours. RESP can also be used to better understand the relative contribution of the microbes and the shrimp to the total oxygen demand of the system. Finally, clarifiers allow cropping of sludge in hopes of promoting algal growth and a "green", photoautotrophic system. |
