• Fisheries and Aquatic Sciences
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• 제17권2호
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• pp.249-253
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• 2014

An 8-week feeding experiment was conducted to determine the influence of dietary distillers dried grain (DDG) on the growth and body composition of juvenile abalone Haliotis discus hannai. Five diets were formulated to contain 0% (DDG0), 15% (DDG15), 30% (DDG30), 45% (DDG45), and 60% (DDG60) DDG, and three replicate groups of abalone (average body weight: $3.6{\pm}0.21$ g) were fed one of the experimental diets at a feeding rate of 5% body weight per day once daily (17:00 h) for 8 weeks. Survival, shell length, and shell width of juvenile abalone were not affected by dietary DDG levels (P > 0.05). Weight gains of juvenile abalone fed DDG15 and DDG30 diets were not different compared to DDG0, but abalone fed DDG45 and DDG60 diets gained less weight than those fed DDG0 (P < 0.05). Soft body weight/body weight ratio of juvenile abalone fed the DDG60 diet was lower than that of those fed the DDG0 diet (P < 0.05), but proximate composition of the soft body was not affected by dietary DDG levels (P > 0.05). The results of this experiment suggest that DDG is a good replacement for wheat flour and soybean meal, and can be used up to 30% in the diet to maintain the growth performance of the juvenile abalone.

• 한국어병학회지
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• 제11권1호
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• pp.35-41
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• 1998

참전복 인공종묘 생산후 박리시 패각 파손 및 연체부 손상 등을 방지하고자 여러 가지 마취제가 사용되고 있으나, 대부분의 전복 마취제는 전복에 대하여 비교적 강한 독성을 가지고 있다. 따라서 무해하다고 인정되어 인체의 마취에 사용되는 lidocaine과 FDA에서 유일하게 수산용 어류 마취제로 인정한 MS-222를 참전복의 마취제로 사용하고자 각장 크기별로 마취 실험을 실시하였다. 각장 1 cm인 전복에 대한 lidocaine과 MS-222의 박리효과는 각장 3 cm인 공시패에서보다 훨씬 우수하게 나타났다. 그리고 각장 1 cm인 공시패에서 lidocaine과 MS-222의 적정마취농도는 각각 200 ppm과 100 ppm이었다. 전복 크기에 따라 박리 효과의 차이는 있었으나 우수한 박리 효과가 인정되었고, 더욱이 싼 가격, 안정성 및 취급 효과가 용이한 점 등을 고려할 때 기존의 전복 마취제를 대신할 수 있을 것으로 생각된다.

• 한국양식학회지
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• 제12권4호
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• pp.317-322
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• 1999

A growth trial was conducted to investigate the utilization of wheat germ meal as a protein source of formulated diet for juvenile abalone (Haliotis discus hannai). Four replicate groups of the abalone average weighing 150mg were fed one of four isonitrogenous (33%) and isolipidic (6%) diets containing 0%, 10%, 20%, or 30% wheat germ meal for 18 weeks. In addition, these formulated diets were compared with commercial diet. Survival rate, weight gain, soft body weight , and shell growth of abalone fed diets containing 0%, 10%, 20%, or 30% wheat germ meal were not different (P>0.05) from those of abalonn fed the control diet and commercial diet. There were no significant differences (P>0.05) in soft body composition of moisture, protein and lipid. It si concluded that wheat germ meal were be used as a partial protein source of formulated diet for juvenile abalone.

• 한국수산과학회지
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• 제36권6호
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• pp.591-595
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• 2003

Settlement of larvae, growth, and survival of juvenile abalone (Haliotis discus hannai) were examined after feding of 5 species of benthic diatoms (Cocconeis suctellum, Navicula sp Nitzschia longissima Bacillavia paxillifera, Licmophora flabellata). All of the benthic diatoms were isolated from natural populations on plastic plates for the abalone. The settlement of larvae, shell growth, and survival rate of juvenile abalone varied by diatoms species. The highest settlement rate of larvae was $43.1\%$ with the Cocconeis suctellum diet. Daliy growth rate reached a maximum at 64.1 ${\mu}m/day$ with the Navicula sp. diet and a minimum at 22.4 ${\mu}m/day$ with the Licmophora flabellata diet. Survival rate of the juvenile abalone was highest at $62.0\%$ with the Navicula sp., Cocconeis suctellum , and Nitzschia longissima diets. Survival rate of the Juvenile abalone was significantly higher than the control group with mixed diatom population diets (P<0.05). Therefore, diatom . species composition in diets can be a controling factor for the settlement, growth, and survival rates of Juvenile abalone.

• 한국수산과학회지
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• 제35권3호
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• pp.282-288
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• 2002

전복 방류효과조사를 위한 효과적인 표지 개발을 위하여 치패에 알맞은 표지 탐색과 표지에 따른 성장과 생존율에 관하여 2000년 5월 25일부터 2001년 1월 27일까지 8개월간 조사하였다. 실험군 (결각군, 동선부착군, 볼트너트구조물부착군 그리고 너트접착군)별 표지부착률은 각장 2, 3cm 볼트너트부착군에서 89.9, $89.5\%$로 가장 높았고, 결각군이 $18.5\%$ 이하로 가장 낮게 식별되었다. 패각 내부에서 표지를 피복하여 표지의 안정성을 높이는 표지피복률은 각장 2, 3cm 볼트너트부착군은 각각 $100.0\%$, $96.6\%$로 나타난 반면, 동선부착군에서는 $17.1\%$ 이하로 나타났다. 각장 2, 3, 4와 5cm의 치패 크기에 따른 표지 실험군별 성장은 대조군와 유의한 차이를 보이지 않아 표지가 전복치패의 성장에 영향을 미치지 않았다. 생존율 역시 각장 2, 3, 4cm의 모든 실험군에서 $93.8\%$ 이상을 보였고, 대조군에 비해 유의한 차이를 보이지 않아 표지가 전복의 폐사에 미치는 영향은 없었다. 각장 5cm 실험군의 생존율은 대조군에 비해 각 실험구는 유의한 차이를 보였다. 이상의 결과에서 표지부착 및 피복률, 성장과 생존 등에서 우수한 결과를 보인 미세볼트너트표지를 부착한 각장 3cm실험군이 본 연구에서 가장 우수한 효과를 보였다.

• 한국수산과학회지
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• 제19권5호
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• pp.446-452
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• 1986

권패인 피뿔고둥 및 전복을 시료로하여 지질을 추출한 다음 규산 column chromatography에 의해서 중성지질, 당지질 및 인지질로 분획하고, TLC scanner, TLC 및 GLC를 이용하여 총지질의 지방산조성, 중성지질, 당지질 및 인지질의 지방산조성 그리고 구성하는 지질성분의 함량과 그 지방산조성을 분석하여 비교${\cdot}$검토하였다. 각시료의 총지질의 함량은 피뿔고둥이 $0.5\%$, 전복이 $0.4\%$로 나타났으며, 중성지질함량은 피뿔고둥과 전복에서 각각 $50.7\%,\;55.8\%$, 당지질은 $3.4\%,\;6.0\%$, 그리고 인지질은 $44.2\%,\;38.2\%$를 각각 차지하였다. 총지질의 주요 지방산은 피뿔고둥의 경우 eicosapentaenoic acid($19.30\%$), eicosenoic acid ($12.10\%$) 및 palmitic acid ($11.77\%$)였고, 전복에서는 palmitic acid($14.21\%$)가 주성분을 이루고 있었다. 특히 피뿔고둥은 polyene 산함량이 $41.22\%$로서 많은 비중을 차지하였다. 중성지질을 구성하고 있는 지질조성은 free steral, 유리지방산, triglyceride, hydrocarbon & esterified sterol등이었으며, 그 밖에 미확인물질도 상당량 포함되었다. 중성지질의 지방산조성을 살펴보면, 피뿔고둥의 경우 eicosapentaenoic acid($18.60\%$), palmitic acid ($14.90\%$) 및 eicosenoic acid($14.76\%$)가, 전복에서는 palmitic acid ($28.l2\%$), oleic acid ($20.50\%$) 그리고 myristic acid ($12.50\%$)가 주요지방산이었고, 전복에서는 docosahexaenoic acid가 검출되지 않았다. 당지질의 주요 지방산조성을 살펴보면 피뿔고둥에서는 eicosapentaenoic acid ($17.57\%$), stearic acid ($13.26\%$) 및 arachidonic acid ($11.24\%$)가 주성분을 이루고 있었고, polyene산함량 ($51.18\%$)이 많았다. 전복에서는 stearic acid ($12.10\%$), myristic acid ($12.75\%$) 및 arachidonic acid ($10.64\%$)가 주요 지방산이었다. 피뿔고둥의 인지질을 구성하는 주요 지방산은 eicosapentaenoic acid($20.18\%$), palmitic acid($11.26\%$) 및 eicosenoic acid($10.90\%$)였고, 전복에서는 palmitic acid($21.10\%$), eicosapentaenoic acid($12.90\%$) 및 oleic acid($11.13\%$)가 주요 지방산이었다.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2003년도 추계학술발표대회 논문요약집
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• pp.73-73
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• 2003

This study was carried out to evaluate the utilization of fermented skipjack tuna viscera (FSTV) in the diet for juvenile abalone Haliotis discus hannai. Lactobacillus bulgaricus was used for fermentation of skipjack tuna viscera. Eight isonitrogenous (about 30% crude protein) diets were formulated to include different levels (0%, 10%, 20% and 30%) of FSTV as a replacer of either dietary fish meal or soybean meal. Three replicate groups of abalone were fed the experimental diets containing different levels of FSTV for 7 weeks. The inclusion of FSTV up to 30% in fish meal-based diet had no significant effect on survival, body weight, shell growth, and proximate composition of abalone (P>0.05). Weight gain of abalone fed the diet substituting 10% FSTV for soybean meal was not significantly different to that of abalone fed the control diet, however this value decreased in abalone fed the 20% and 30% FSTV (P<0.05).The contents of crude protein and lipid of soft body in abalone fed soybean meal-based diets were significantly affected by dietary FSTV level (P<0.05). The results of this study indicate that FSTV can be used as a partial substitute protein source for fish meal or soybean meal in the formulated diet for juvenile abalone.

• 한국세라믹학회지
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• 제51권1호
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• pp.7-10
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• 2014

Abalone shell is composed of 95 wt% $CaCO_3$ platelets and 5 wt% of a protein-rich organic matrix which acts as an adhesive layer, connecting aragonite tablets, thus maintaining the structural integrity of the composite. By mimicking abalone shell, we prepared a silicate plate/polymer nanocomposite by infiltrating PMMA between silicate layers and warm-pressing them at $200^{\circ}C$ for 1 h under 15 tons to make organic-inorganic composite materials. To examine the organic-inorganic composite materials after the warm-pressing procedure, the composite sample was analyzed with FE-SEM and TG. The bending strengths and densities of the composites prepared by a silicate plate and PMMA after the warm-pressing process were ~140 MPa and 1.5, respectively.

• 한국수산과학회지
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• 제47권2호
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• pp.154-159
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• 2014

The increasing of atmospheric $CO_2$ are changing the pH (ocean acidification) and temperature of the sea. Although the effects of ocean acidification on calcifying organisms have well-documented, only a few studies have examined the combined effects of ocean acidification and elevated temperature. This study investigated the effects of ocean acidification and elevated temperature for 2100 on survival and growth of juvenile abalone, Haliotis discus hannai. Ocean acidification was simulated by bubbling $CO_2$ into seawater at concentrations of 1,000 and 1,500 ppm, and temperature was set at room temperature $+2^{\circ}C$. Neither $CO_2$ nor temperature had a significant effect on survival of abalone, while both significantly affected growth. There was no significant interaction between the two factors. Shell length can be used as a growth index of abalone to access the impacts of ocean acidification and elevated temperature.

• 한국수산과학회지
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• 제42권6호
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• pp.591-599
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• 2009

Genetic parameters for growth-related traits were estimated in 9-month old of two Korean abalone subspecies, Haliotis discus hannai and H. discus discus, using multiple traits of animal model. The data were collected from the records of 3,504 individuals produced from 16 sires and 17 dams in H. discus hannai and 821 individuals produced from 3 sires and 4 dams in H. discus discus, which was evaluated at the Bukjeju branch, NFRDI, from May 20, 2004 to February 14, 2005. The heritability estimates obtained from restricted maximum likelihood (REML) method range from 0.29 to 0.31 for three growth traits (shell length, shell width and body weight) in H. discus hannai and from 0.22 to 0.28 in H. discus discus, respectively. The heritabilities for shell shape and condition factor were lower than others of growth traits such as ranging from 0.03 to 0.24 in H. discus hannai and from 0.06 to 0.11 in H. discus discus, respectively. Genetic and phenotypic correlations were >0.91 between shell parameters and weight in two abalone subspecies, respectively, indicating that breeding for weight gains could be successfully achieved by selecting for shell length.