Investigation of the RNA:DNA ratios of laboratory reared and field caught larval red drum (Sciaenops ocellatus)

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dc.contributor.advisorHolt, J. (Joan)
dc.creatorDrescher, Kristen Croll
dc.date.accessioned2023-08-01T19:40:05Z
dc.date.available2023-08-01T19:40:05Z
dc.date.issued1995
dc.description.abstractThe purpose of this study was to determine the nutritional condition of naturally occurring planktonic red drum larvae using measurements of RNA:DNA ratios. The RNA:DNA ratios of red drum larvae sampled in a Texas tidal inlet during fall 1994, were calibrated with data from laboratory studies of fed and starved red drum. Data from laboratory studies showed RNA:DNA ratios of starved larvae to be consistently lower than well fed larvae. When compared to the laboratory data, RNA:DNA ratios of field caught red drum larvae ranged from values associated with starved laboratory larvae to values greater than those obtained for fed larvae. In order to account for some of the variance and to identify factors other than food availability that may have affected the RNA:DNA ratio of field caught specimens, additional laboratory studies investigated the effects of different handling techniques on the RNA:DNA ratio. Modifications in sample handling (time of day collected, variable time intervals postmortem at room temperature and variable freezer storage intervals) did not alter the RNA:DNA ratio in laboratory studies. Variance within field caught fish was attributed to varying nutritional condition with 42% of the natural population of red drum larvae experiencing some degree of food deprivationen_US
dc.description.departmentMarine Scienceen_US
dc.format.mediumelectronicen_US
dc.identifier.urihttps://hdl.handle.net/2152/120728
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/47561
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.rights.restrictionRestricteden_US
dc.subjectRed drumen_US
dc.subjectLarvaeen_US
dc.subjectNutritionen_US
dc.subjectTexasen_US
dc.subjectGulf Coasten_US
dc.subjectSample handlingen_US
dc.subjectRNA:DNAen_US
dc.subject.lcshRed drum--Larvae--Nutrition--Texas--Gulf Coast
dc.subject.lcshFish culture
dc.titleInvestigation of the RNA:DNA ratios of laboratory reared and field caught larval red drum (Sciaenops ocellatus)en_US
dc.typeThesisen_US
dc.type.genreThesisen_US
thesis.degree.departmentMarine Scienceen_US
thesis.degree.disciplineMarine Scienceen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US

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