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Growth of Florida Fighting Conch, Strombus Alatus, in Recirculating

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Growth of Florida Fighting Conch, Strombus Alatus, in Recirculating FAD LIBRARIES Florida Atlantic University HARBOR BRANCH ~ FLORIDA ATLAN'nC UNIVERSITY FAU Institutional Repository http://purl.fcla.edu/fau/fauir This paper was submitted by the faculty of FAU’s Harbor Branch Oceanographic Institute Notice: ©2009 Gulf and Caribbean Fisheries Institute. Proceedings can be found online at http://www.gcfi.org/ Gulf and Caribbean Fisheries Institute Proceedings are not copyrighted and there is no charge for non‐commercial use. However, GCFI strongly encourages individuals who wish to use figures, images or other components of a paper published in the proceedings to contact the author to receive approval. GCFI became an independent not‐for profit corporation in 1985 and is entirely supported by member contributions, grants, and subscriptions to its Proceedings. This manuscript may be cited as Shawl, Amber, Dave Jenkins, Megan Davis, and Kevan Main (2005) Growth of Florida fighting conch, Strombus alatus, in recirculating systems in Proceedings of the 56th Annual Gulf and Caribbean Fisheries Institute held November 2003 Roadtown, Tortola, British Virgin Islands, p.773‐780. Library Library FORT FORT FIFTY FIFTY of of BRITISH BRITISH ROADTOWN,TORTOLA ROADTOWN,TORTOLA Congress Congress Gulf Gulf PIERCE, PIERCE, R. R. Fisheries Fisheries Proceedings Proceedings ofthe Proceedings NOVEMBER NOVEMBER LeRoy LeRoy - - Edited Edited 52-033783 52-033783 and and SIXTH SIXTH VIRGIN FIFTY - SIXTH ANNUAL VIRGIN Catalog Catalog Caribbean Caribbean FLORIDA FLORIDA CresweII CresweII Institute Institute by: Gulfand Caribbean by: 2003 2003 ISLANDS ISLANDS ANNUAL ANNUAL of Fisheries Institute of the the Card Card 2005 ROADTOWN,TORTOLAROADTOWN, TORTOLA2005 Number BRITISH VIRGIN ISLANDS Number NOVEMBER 2003 Library ofCongress ,Catalog Card Number 52-033783 Edited by: R. LeRoy Creswell FORT PIERCE, FLORIDA 2005 Strombus a/allis, Growth ofFlorida Fighting Conch, StrombusKEY ala/lis, in salinity, system. stocking overall day and growing Branch, utilized stocked sites, significantly elevated bus to 13 An systems. shift aquaculture ftrst in the growout Recirculating Systems compare discharge at experiment alatus Mote, at recirculating With from WORDS: Harbor Harbor 1 2 Harbor survival Growth and I,, , with AMBER SHAWL DAVE JENKINSjuvenile at sand and density 2 The the In open, respectively). MEGAN DAVIS I, and KEVANKEVAN MAIN at systems each survival are 26.4°C, faster juvenile pH 75 Branch of 2001, J substrate. J Branch Harbor Branch Oceanographic Institution increased Branch recirculating was determining effluent Aquaculture, rate conch/m' Aquaculture Division flow-through conch. throughout of site conch averaged J Harbor MEGAN growth 5600 US 1 North AMBER that [email protected]: Florida Harbor conducted 34.9 and at Oceanographic dave;@mole.org; and (I6.9 Ft. Pierce, FloridaFlo/ida 34946 USA had and Ft. Harbor Sarasota, aquaculture 1600 interest from yield The ashaw/@}Jboi.edu: mdavis@}lboi.edu growth In %0, 2 2.2 Recircnlating Pierce, (109 Branch optimal rate Mote 22.5 26.7°C, 2 Mote Marine LaboratoryLabora/ory ± Branch Aquaculture the system DAVIS', 12 the SHAWL', Fighting three and conch, Ken aquaculture at the 1.9 systems 1600 Ken Thompson Parkway 5600 from Branch at weeks, and stocking in Mote. ABSTRACT mm Marine experiment of Florida Sarasota, Florida 34236 USA 8.2, Florida shell fastest Mote, Thompson Oceanographic replicate water slocking juvenile 31.6 program. US 140 Stromblls [email protected]: [email protected] Oceanographic consisted March Institution or at and to [email protected] and the length) DAVE 1 Conch, The [email protected] 0.27 Mole. Laboratory conch which growth Division density conservation %0, North recirculating production KEVAN 34236 Systems 34946 conch Mote, raceway II recirculating aquaculture conch Parkway ABSTRACT densities and nun!day Two There JENKlNS', per of Florida - appeared The With the increased interest in water conservation and the need to reduce and Stromblls rate and June USA grew 7.9, USA Institution respectively. the discharge ofeffluent from aquaculture production systems,systems. there"has been a raceways replicate important MAIN' in Mote feed Institution systems, troughs was and shift from open, flow-through systems to recirculating aquaculture production water a and at 3, aquaculture respectively and fighting 18.8 systems. In 2001, Harbor Branch Oceanographic Institution developed the recirculating conversion to Mote. 2003 the an Marine ftrst recirculating conch aquaculture program. Two important aspects ofconch the quality aiatlls, be water at mm at troughs 83 highest aspects aquaculture are determining the stocking density and water quality parameters there'has Harbor need due at developed each conch, Temperature, % There in growout systems that yield the fastest growth rate and the highest survival. or two Laboratory, quality parameters production to and at in An experiment was conducted from March]March 1]1- June 3, 2003 at two Florida 0.22 to ratio site survival. of growout with systems a Florida Branch sites, Harbor Branch Oceanographic Institution and Mote Marine Harbor Laboratory, sites, Harbor Branch Oceanographic Institution and Mote Marine Laboratory, Strom­ reduce been was conch lower 70 were to compare survival and growth ofjuvenile conch in a recirculating growout nun! was the for an % system. The recirculating system consisted of raceways troughs with ana a elevated sand substrate. The three replicate raceway troughs at each site were stocked with juvenile (16.9(I6.9 ± 1.9 shell length) Florida fighting conch, Strom­ bus ala/us at 75 conch/m2 (109(l09 and 140 conch per replicate at Harbor Branch and Mote, respectively). In 12 weeks, the conch grew 18.8 nun or 0.22 mmJ day at Harbor Branch and 22.5 mm or 0.27 mm/daymmlday at Mote. There was a significantlysigniftcantly faster growth rate at Mote, which appeared to be due to a lower stocking density throughout the experimentexperimenl There was an 83 % and 70 % overall survival rate at Harbor Branch and Mote, respectively. Temperature, salinity, and pH averaged 26.7°C, 31.6 %0, and 7.9, respectively at Harbor Branch, and 26.4°C, 34.9 %0, and 8.2, at Mote. The feed conversion ratio was 1.3 at Harbor Branch and 2.2 at Mote. The recirculating aquaculture systems utilized at each site had optimal stocking densities and water quality for growing juvenile conch. KEY WORDS: Aquaculture, conch, Strombus Page 774 56th Gulf and Caribbean Fisheries Institute Crecimiento del CaraealCaracol Florida Fighting Conch, StronlbusStron,bus alatlls,a/atlls, en Sistemas de RecirculacionRecirculaci6n Con ele1 interes aumentado a 1ala conservacionconservaci6n de agua y 1a)a necesidad de reducir la descarga de aguas residuales de sistemas de producci6n de aquacul­ tura,tura) hubo un cambia de sistemas que eran abierto, flujo - porpar sistemas de circulacion produccion. En 2001I ~ laIa Harbor Branch Oceanographic InstituionInstituioD desarrollo la primera sistema porpar concha que es recirculante. Dos aspectos mas importantes de la aquaculture de concha es detennifladetennina la densidad de media y panlmerrosparametros de calidad de agua en sistemas maduracion que ceden eIel indice de crecimiento mas rapido y Ia sllpervivenciasupervivencia mas alta.aha. Un experimento fue conducido des del 11 de Marzo hasta el 3 de Juniolunio de 2003 en dos sitios en Florida, Harbor Branch Oceanographic Institution and Mote Marine Labora­ tory,tory~ comparar la supervivencia y el crecimienrocrecimiento de Iala concha juveniljuveniI en una nueva sistema de circulaci6ncirculacion de maduracion. EI sistema recirculante consistio recirculating effort are been when sitio signs (Berg en density, Temperatura, influence P y vivencia concha de nueva Branch Florida, respectivamente varnente). m fue en circulacion reducir desarrollo considerablemente indice mas raceway media del tory, tura, Page ALABRAS 2.2 en artesas raceways concan una arena elevada. Los tres se reproducen Jaslas artesas2 Crecimiento Mote. artesas media (109 conducido shifting concha) Conch raceway en cada sitio fueron abastecidas de Floridajuvenil (16.9 ± 1.9 10ngitud Con racewayOne en cada sitio fueroD abastecidas de Floridajuvenil (16.9 ± 1.9 longitud importantes tenia camparar conducted en hubo of 774 10 the sistema 1976, de y del concha) luchando contra la concha, StrombusStromjuvenil. bus alatus en 75 concha parpor los la y and y decline la Harbor en conserve panlmelros total 2 La of el crecimiento inferior 22.5 lhe commercial descarga raceways En m (l09(I09 Yy 140 concha porpar se reproducen en Harbor Branch and Mote,Mote. respecti­140 la Mote. densidades aquaculture un produccion. cada the nutrition. from Iuchando interes proporci6n Davis vamente). En 12 semanas; la concha creci6crecioCLA 18.8 mm 00.220 0.22 mm/dias en Harbor primera growout 12 del salinidad, growth de des concha cambia mm Ia Branch ymore 22.5 mm 0 0.27 .mmldias en Mote. Habia un indice de crecimiento en (Appel alatlls, Branch to sitio 5Omanas; La circulacion 83% de en open, YES: supervivencia del del water considerablemente mas f'ipidonipido en Mote, que pareci6 ser debido a unamas densidad determine Rama de 0 1994, aumentado 56th can de nueva todas recent la fueron mas de media inferior en tociastoclas partes del experimento. Habia un precio de0.27 super­ contra por sistema rate II aguas Caracol systems. queen de y doom de has rapido caUdad de Aquacultura, aquaculture una flow-through Oceanographic En vivencia total del 83% y del 70% en Harbor Branch y Mote,'y respectivamente. and del de Gulf en de 50 10 nipido media 2000, sistemas .mmldias conversi6n pH partes of 26.7°C~ circulacion Temperatura, salinidad, y pHbeen hecho un promedio 26.7°C, 31.6 ppt, Y 7.9, additions Marzo 200 abastecidas concha Puerto, reproducen arena 70% residuales Sistemas Ia D de INTRODUCTION reduce conch, 1994). the and captive respectivamente en Rama de Puerto, y 26.4°C,26.4 C, 34.9 ppt, Y8.2, respectivamente por y y en hecho concha, a de maduracion. I of y Marine Spring I en Mote. La proporcion de conversionconversi6n de comida era 1.3 en ]a Rama de Puerto y 6ptimas Rama Florida Mote, del en Ia optimal el Ia elevada.
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