Ecosystem Dynamics of a Microbial Biofloc Community Used to Culture Pacific White Shrimp (Litopenaeus vannamei)

Persistent Link:
http://hdl.handle.net/10150/620702
Title:
Ecosystem Dynamics of a Microbial Biofloc Community Used to Culture Pacific White Shrimp (Litopenaeus vannamei)
Author:
Holstein, Traci Elizabeth
Issue Date:
2008
Publisher:
The University of Arizona.
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.
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.
Type:
text; Thesis-Reproduction (electronic)
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; General Biology
Degree Grantor:
University of Arizona
Advisor:
Fitzsimmons, Kevin

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleEcosystem Dynamics of a Microbial Biofloc Community Used to Culture Pacific White Shrimp (Litopenaeus vannamei)en_US
dc.creatorHolstein, Traci Elizabethen
dc.contributor.authorHolstein, Traci Elizabethen
dc.date.issued2008-
dc.publisherThe University of Arizona.en
dc.rightsCopyright © 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.description.abstractMicrobial 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.en
dc.typetexten
dc.typeThesis-Reproduction (electronic)en
thesis.degree.nameM.S.en
thesis.degree.levelmastersen
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplineGeneral Biologyen
thesis.degree.grantorUniversity of Arizonaen
dc.contributor.advisorFitzsimmons, Kevinen
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