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1 J. of Aquaculture Vol. 19(4) : , 2006 µ Journal of Aquaculture Korean Aquaculture Society w l eq, y, 1, * ûw ww wœ, 1 w Growth Comparison of Juvenile Abalone, Haliotis discus hannai in DifferentGCulture Systems in the West Coast of Korea Seong Yong Moon, Ho Seop Yoon, Dae Chol Seo 1 and Sang Duk Choi* Aquaculture Program, Fisheries and Ocean Sciences, Chonnam National University, Yeosu , Korea 1 Marine Bio Research Institute, Sinan , Korea Comparisons of growth and survival rate in different culture systems for juvenile abalone were determined in the West Coast of South Korea from June, 2000 to April, Daily growth rate reached at the maximum by ± µm/day with a stagnant system and at the minimum by 95.3±21.45 µm/day with a sprinkler culture system. Survival rate of the juvenile abalone was significantly higher than that in sprinkler culture with a rotary culture (P<0.05). The highest survival rate was 50.0% in the rotary culture and 38.3% was observed in the stagnant culture system. The results from this study indicate that effective survival and growth rate could be predicted in the rotary culture system. Keywords: Haliotis discus hannai, Culture system, Growth, Survival ù wš (Haliotis discus hannai) w 1976 œ x ûw wƒ š, m m, ,260m ã wš (MOMAF, 2005). j ³, k,, k w (Lee et al., 1999; Baek et al., 2003; Kang et al., 2004). ƒ j»ƒ x eq ù y w w»» ¾ ¾š s ùkù» eq z y w w w z w š vw y w l (Jeong et al., 1994; Lee et al., 1999; Son et al., 2003),» w, w w» eq ³ *Corresponding author: choisd@chonnam.ac.kr 242 w (Suzuki et al., 1987; Baek et al., 2003; Gordon et al., 2006)» œw w z ƒ š (Lee et al., 1997, 2001; Kim et al., 1998) w w (Jee et al., 1988) š w ƒw, w ktù w, w ù w x w» 1990 w (Jeong et al., 1994). û, w ûw wƒ, š, ûw 80% r x w, w w. r ny p w yw r sw e q y w(chung et al., 1993) s k ƒ, qq w eq ³ š» ù š»ƒ w.

2 w ny p y š w š l eq wš w. x l Fig. 1 ƒ 1 m, 7 m, 1.2 m ( 1.0 m) 7 m 2 g jp ƒx l 3 x w. ³ eq r w w» w 1 e e w»»(50 µm) w w œ w, (Sprinkler culture) x ƒ 50 mm PVC qv ewš 3.5 mm ü qq g œ w. z(rotary culture) x 50 cm š ù qq e ew z l eq 243 w. y 2z wš y 25% w w. (Stagnant culture) x ƒw š œ w w, w w. w d w d e w x w. y y w» CTD (ACL1182-PDK) w dw, DO meter (YSI-58) w l 8 30¾ d w. qq ³ w e n y qq (30 cm 25 cm) z œ w y w œ e ew, ³w w w 4 yw³(cocconeis sp., Navivula sp., Nitzschia sp., Amphora sp.) f/2 wì 17±1 o C, lux k w. eq l eq w» w ƒw» 15 z qq ³ƒ ƒ j»ƒ s³1.18±0.05 mm eq w n y qq(30 cm 25 cm) w l 8 24¾ x w. eq w» w 3œ kw qq 3 eq 30 w ƒ j» dw z, Alcantara and Noro (2006) w w. eq ƒ j» 0.01 mm¾ d ƒw n» 0.05 mm ¾ dw Vernier caliper w dw, x z s yw s yw w. m x m SPSS program w (ANOVA test) w wš, x w Duncan (1955) w w. s³ P<0.05 w. Fig. 1. Schematic diagram of experimental system for the culture of juvenile abalone Haliotis discus hannai. A: rotary system, B: sprinkler system, C: stagnant system, D: side of rearing tank. Arrows indicate the direction of water flow. š w eq w» w w y w Fig. 2

3 244, y,, Table 1. The daily growth and survival rate of juvenile abalone with the different culture systems in during culture period 1 Culture systems Survival rate (%) Daily growth in shell length (µm±sd) Sprinkler system 18.4 a ± a Rotary system 50.0 c ± b Stagnant system 38.3 b ± c 1 Superscripts with different alphabets in same column are significantly different at the P<0.05. Fig. 2. Weekly variation of water temperature, salinity and DO in the tanks during culture period ~25.4 o C, x 42 z ƒ ùkû. 26.4~32.4 psu, 5.89~7.45 mg/l. y x l 35¾ j y ù, 42 w 26.4 psu e ùkþ. w w w, š mg/l ƒ û ùkû. w (Hahn, 1989; Fallu, 1991), eq w e (Aviles and Shepherd, 1996). eq w r(table 1), eq l w (P<0.05), 95.3 µm/day, z µm/day, µm/day ƒ ùkû. Jeong et al. (1994) l eq µm/day w 43.8 µm/day ƒ j»ƒ j wš w š w, sy 20~22 o C ƒwš w(, 1994). w, eq w 21.7 o C ƒ,» 85.8~104.2 µm/day, 25.2 o C 53.8~59.2 µm/day w j ƒ š w(jee et al., 1988). w, 19.8~25.4 o C xw 95.3 µm/day, z µm/day, µm/day ùkü,» š w ùkû. w x eq j»ƒ s³ 1.18 mm w, eq j»ƒ ƒ ùk ù(jee et al., 1988; Lee et al., 2001) w š. eq» 30 ù 55.6~86.4% l w (P<0.05), x z 22 o C û x 18.4% û ùkû, z x x ƒƒ 50.0%, 38.3% ùkþ. x û ú ³ kx wì» w 7 ü w w 28 psuw y x 25 o C š y(sakai, 1962; Uki, 1986)ƒ w w eq w wì s w y, eq ³ ƒ y y š q(marsden and Williams, 1996).» l eq ƒ j» y r(table 2), mm (±0.05) ƒ j» w (P>0.05), ù l w ùkþ (P<0.05). 80 l eq

4 l eq 245 Table 2. Variation of shell length (mm) for juvenile abalone reared with different culture systems 1 (mean±sd) Culture systems Month 5, June (0 days) 25, June (20 days) 14, July (40 days) 4, Aug. (60 days) 24, Aug. (80 days) Sprinkler system 1.18±0.013 a 1.54±0.024 a 2.25±0.048 a 16.08±0.322 a 18.82±0.587 a Rotary system 1.19±0.016 a 3.22±0.190 b 7.16±0.224 c 10.83±0.417 c 13.08±1.455 b Stagnant system 1.19±0.012 a 3.20±1.543 b 3.90±1.915 b 19.40±3.621 b 13.81±5.323 c Superscripts with different alphabets in same column are significantly different at the P< ùkþ(p<0.05), x 8.82 mm (±0.587), z x mm (±1.455), x mm (±5.323) w. x ƒ ƒ û qq ƒ û tw w ƒ eq ùkú ƒ ƒ w wg e q»w q, w x ƒ w ƒ w w. w ny p šw 3 l eq xw z x ƒ x w ùkù. ù eq ³ œ d šw, y w z w eq w šw ³ w ƒ w w. w l eq w» w l 8¾ w. eq 148.6Û48.96 µm ƒ ùkû, 95.3±21.45 µm ƒ û ùkû. z ùkù w ùkþ(p<0.05), z 50.0%, 38.3% ƒ û. z eq ƒ ùkû. w mw x x ûw y kw x ¾. šx Alcantara, L. and T. Noro, Growth of the abalone Haliotis diverscicolor (Reeve) fed with macroalgae in floating net cage and plastic tank. Aquaculture Research, 37, Aviles, J. G. G. and Shepherd, S. A., Growth and survival of the blue abalone Haliotis fulgens in barrels at Cedros Island, Baja California, with a review of abalone barrel culture. Aquaculture, 140, Baek, J. M., C. W. Kim, S. G. Lim and C. S. Park, Effect of benthic diatoms on the settlement rate of larvae and survival and growth of juvenile abalone (Haliotis discus hannai). J. Kor. Fish. Soc., 36, Chung, E. Y., Y. K. Shin and J. H. Lee, Effects of Silt and Clay on Respiration and Mortality of the Abalone, Nordotis discus. J. Kor. Malacol., 9, Duncan, D. B., Multiple rang and multiple F tests. Biometrics, 11, Fallu, R., Abalone Farming. Fishing News Books. Oxford, 195 pp. Gordon, N., A. Neori, M. Shpigel, J. Lee and S. Harpaz, Effect of diatom diets on growth and survival of the abalone Haliotis discus hannai postlarvae. Aquaculture, 252, Hahn, K. O., Handbook of Culture of Abalone and Other Marine Gastropods. CRC Press, Boca Raton, FL, 348 pp. Jeong, S. C., Y. J. Lee and P. W. Son, Indoor tank culture of the ablone Haliotis discus hannai II. Effects of diets on growth of young ablone. J. Aquacult., 7, Jee, Y. J., S. K. Yoom, S. Rho and S. H. Kim, The stocking density and growth of young abalone Haliotis discus hannai Ino cultured in the hanging net cage. Bull. Nat. Fish. Res. Agency, 42, Kang, K. H., B. H. Kim and J. M. Kim, Induction of larval settlement and metamorphosis of the abalone, Haliotis discus hannai larvae using bromomethane and potassium chloride. Aquaculture, 230, Kim, B. H., S. M. Lee, C. S. Go, J. W. Kim and J. I. Myeong, Optimum stocking density of juvenile abalone (Haliotis discus hannai) fed formulated diet or macroalgae (Undaria). J. Kor. Fish. Soc., 31, Lee, S. M., G. A. Lee, I. G. Joen and S. K. Yoo, Effects of experimental formulated diets, commercial diet and natural diet on growth and body composition of abalone (Haliotis discus hannai). J. Aquacult., 10, Lee, S. M., C. S. Park and T. S. Go, Effects of formulated

5 246, y,, diet and macroalgae (Undaria pinnatifida) on growth and body composition of juvenile abalone (Haliotis discus hannai) cultured in different shelter type and water temperature. J. Kor. Fish. Soc., 32, Lee, S. M., C. S. Park and D. S. Kim, Effects of dietary herbs on growth and body composition of juvenile abalone, Haliotis discus hannai. J. Aquacult., 34, Marsden, D. I. and P. M. J. Williams, Factors effecting the grazing rate of the New Zealand abalone Haliotis iris Martyn. J. Shellfish Reserch, 15, MOMAF, Statistical Year Book of Maritime Affairs and Fisheries. Ministry of Maritime Affairs and Fisheries, 335 pp. Sakai, S., Ecological studies on the abalone, Haliotis discus hannai Ino - I. Experimental studies on the food habit. Bull. Jap. Soc. Sci. Fish., 28, Son, M. H., K. C. Cho, K. K. Kim and I. G. Jeon, Optimum stocking density of juvenile ablone, Haliotis discus hannai in recirculation culture system. J. Aquacult., 16, Suzuki, H., T. Ioriya, T. Seki and Y. Aruga, Changing of community on the plastic plates used for rearing the abalone Haliotis discus hannai. Nippon Suisan Gakkaishi, 53, Uki, N., Feeding behavior of exprimental populations of the abalone, Haliotis discus hannai. Bull. Tohoku Reg. Fish. Res. Lab., 43, , syl eq. w w, 49 pp. š : :

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