Survival and growth of juvenile hatchery-reared spotted seatrout, cynoscion nebulosus, stocked into rearing ponds at 2 and 9 days post-hatch

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dc.contributor.advisorFox, Joe M.
dc.contributor.authorGury, Manor
dc.contributor.committeeMemberVega, Robert R.
dc.contributor.committeeMemberSiccardi III, Anthony J.
dc.contributor.committeeMemberProffitt, Charles
dc.date.accessioned2018-02-06T21:01:17Z
dc.date.available2018-02-06T21:01:17Z
dc.date.issued2017-08
dc.description.abstractOf concern to recreational fisheries is the growth and survival of hatchery-reared sport fish released for stock enhancement purposes. This study was conducted to evaluate the effect of water quality/source on growth and survival of larval spotted seatrout (Cynoscion nebulosus) reared in captivity. Trials were conducted both indoors under controlled conditions and in outdoor tanks. For the indoor trials, seatrout eggs were stocked into replicated (n = 4) 83-L tanks at 50,000 eggs/tank for either 2 or 9 days post-hatch (DPH). During this period, tanks received either filtered seawater, raw seawater, or filtered seawater containing marine microalgae. There was no significant difference (P>0.05) in survival of either 2 DPH (49.95 ± 13.6%) or 9 DPH (30.73 ± 14.2%) larvae regardless of water source. However, a significant difference was observed between the growth rates of 9 DPH larvae, as the larvae in the clear water treatment were significantly smaller (P = 0.01) than the two other treatments. Outdoor tanks (13,000-L) were stocked with 1,500 larvae (2 DPH or 9 DPH) (n = 3) which were reared for 30 days. Growth (TL) and survival rates in the outdoor tanks approximated 1.06 and 1.41 mm/day and 11 and 7.5%, respectively. There was no significant difference (P =0.15) in survival which was similar between the two age groups; a highly significant growth rate difference was shown. Results from this preliminary research indicate that current protocols used to rear juvenile spotted seatrout can be improved by increasing indoor rearing period.en_US
dc.description.collegeCollege of Science and Engineeringen_US
dc.description.departmentLife Sciencesen_US
dc.format.extent33 pagesen_US
dc.identifier.urihttp://hdl.handle.net/1969.6/19204
dc.language.isoen_USen_US
dc.rightsThis material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher.en_US
dc.subjectfisheriesen_US
dc.subjectFish Larvaeen_US
dc.subjectHatchery-Reared Fishen_US
dc.subjectMaricultureen_US
dc.subjectseatrouten_US
dc.subjectSpotted Seatrouten_US
dc.titleSurvival and growth of juvenile hatchery-reared spotted seatrout, cynoscion nebulosus, stocked into rearing ponds at 2 and 9 days post-hatchen_US
dc.typeTexten_US
dc.type.genreThesisen_US
thesis.degree.disciplineFisheries & Maricultureen_US
thesis.degree.grantorTexas A & M University--Corpus Christien_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US

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