The culture of estuarine fishes in net pens and cages in a power plant cooling system.

Simple item page
dc.acquisition-srcen_US
dc.call-noTK1191.O44 1980 GBAYen_US
dc.contract-noen_US
dc.contributor.authorGonzalez, G.M.O.en_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T16:59:49Z
dc.date.available2010-02-15T16:59:49Z
dc.date.issued1980en_US
dc.degreeen_US
dc.description103 p., Thesisen_US
dc.description-otheren_US
dc.description.abstractA total of 11 species of estuarine fish were cultured in net pens and cages at different times from September 1, 1978 to June 30, 1979, at the Houston Lighting & Power Company's Cedar Bayou Generating Station near Baytown, Texas. Low salinity during the last 4 months of the period made it difficult to keep fish alive. An attempt was made to overwinter Florida pompano (Trachinotus carolinus). An infestation of Trichodina sp. in the gills of the fish caused over 90% mortality 3 weeks after stocking in November. The survivors died when the temperature dropped to 9 C in January. A comparison was made between net pens and cages for the culture of black drum (Pogonias cromis). Growth and food conversion efficiency of black drum was slightly better in net pens than in cages. The black drum in the cages were lost due to rough weather in December and January. Those in the net pens died in April when the salinity dropped to less than 1 ppt for more than 1 week. A vinyl coating containing tri-butyl tin oxide as a antifoulant was applied to the net pens and found to be effective in preventing fouling. No maintenance of the net pens was required in the 323 days they were immersed in water. An experiment was conducted to determine the optimum stocking density of Atlantic croaker (Micropogonias undulatus) in cages. Fish stocked at 5 kg/m3 had a greater growth rate and food conversion efficiency than those stocked at 10, 15, or 20 kg/m3. Production increased as stocking density increased. Highest production was achieved at a stocking density of 20 kg/m3. The increase in production was not proportional to the increase in stocking density. Guidelines to determine the optimum stocking density were established. Three feed types were compared for black drum culture in cages. Black drum fed a commercial diet containing 40% protein had a better growth and food conversion efficiency than those fed a diet containing 36% protein or ground fresh fish. Fish fed the 36% protein diet had a higher condition factor than those fed either of the other 2 diets. Other species used as biological monitors in the cooling system at various times during the study period were striped mullet (Mugil cephalus), pinfish (Lagodon rhomboides), Fundulus grandis, F. similis, Cyprinodon variegatus, blue catfish (Ictalurus furcatus) and redfish (Sciaenops ocellata).en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeCedar Bayouen_US
dc.geo-codeBaytownen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/20812
dc.latitudeen_US
dc.locationGBIC Collectionen_US
dc.longitudeen_US
dc.notesen_US
dc.placeCollege Station, Texasen_US
dc.publisherTexas A&M University.en_US
dc.relation.ispartofseries3004.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectcagesen_US
dc.subjectnetsen_US
dc.subjectsalinityen_US
dc.subjectFlorida pompanoen_US
dc.subjectmortalityen_US
dc.subjecttemperatureen_US
dc.subjectblack drumen_US
dc.subjectgrowthen_US
dc.subjectfood conversionen_US
dc.subjectmaintenanceen_US
dc.subjectstockingen_US
dc.subjectpopulation densityen_US
dc.subjectAtlantic croakeren_US
dc.subjectcage cultureen_US
dc.subjectstriped mulleten_US
dc.subjectpinfishen_US
dc.subjectblue catfishen_US
dc.subjectredfishen_US
dc.subjectTrichodina sp.en_US
dc.titleThe culture of estuarine fishes in net pens and cages in a power plant cooling system.en_US
dc.typeBooken_US
dc.universityen_US
dc.vol-issueen_US

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