共查询到20条相似文献，搜索用时 187 毫秒
1.
介绍了锯缘青蟹的全人工繁育技术。从亲蟹的强化培育人手提高青蟹抱卵率，2002年青蟹苗种生产中抱卵率为85％．单位水体最高出苗量为7000余只(2茬)／m^3，平均出苗量为1960只／m^3，共育成Ⅱ期幼蟹156．6万只，形成了北方地区锯缘青蟹全人人工工厂化育苗技术的完整体系。 相似文献
2.
日本大鲍与皱纹盘鲍杂交的研究 总被引：4，自引：0，他引：4
利用从日本引进的大鲍，与我国产皱纹盘鲍进行了杂交育苗试验，在540m^2鲍育苗池中，1999年6月常温采苗至当年11月份，培育出平均壳长17.9mm的皱纹盘鲍雌与日本大鲍雄的杂交鲍苗180余万粒，单位面积出苗量为3300余粒／m^2。这些杂交鲍苗，经过1年多的室内饲育，至2000年11月平均个体壳长达37mm，最大个体壳长达45mm，显示出了良好的生产性状和一定的杂种优势。 相似文献
3.
2003年4～5月，在南通东朋水产品有限公司吉成河蟹育苗场进行河蟹育苗，共育出四批大眼幼体。前两批以丰年虫无节幼体为主要饵料，1．500m^3育苗水体共育出大眼幼体370kg，平均出苗量0．25kg／m^3，蟹苗质量较好(规格为15万只／kg左右)，但育苗成本很高，为800元/kg；第三批苗以新鲜淡水蚤(桡足类)为主要饵料，丰年虫无节幼体为辅助饵料，495m^3育苗水体共育出大眼幼体99kg，平均出苗量0．20kg／m^3，蟹苗个体小(规格在44万只／kg左右)，质量差；第四批育苗完全不用丰年虫无节幼体，而是采用生态法育苗，施肥培育单细胞藻类，450m^3水体共育出大眼幼体260kg(3900万)，平均出苗量0．5kg／m^3左右，育苗成本低，大眼幼体质量好。规格在8000只／kg的幼蟹,回捕率在30％以上。 相似文献
4.
1999－2000年进行了三疣梭子蟹生产性人工育苗试验。2000年共育出仔蟹188.5万只，平均成活率6.35％，其中第一茬成活率为3.19%，第二茬为11.81%；平均单位水体出苗量为2945只／m^3，其中第一茬为1876只／m^3，第二茬为4013只／m^3。 相似文献
5.
锯缘青蟹工厂化规模育苗技术的研究 总被引：2，自引：0，他引：2
1998年投入育苗用抱卵蟹44只,孵化蚤状幼体(Z_1)6250万只,育成大眼幼体409.76万只,平均成活率达到6.56％,平均单位水体出苗量达到6180只。稚蟹培育,投入大眼幼体409.76万只,培育出稚蟹(C_2～C_6)244.46万只,平均规格为个体甲壳宽1.17cm、体重0.22g,平均成活率达到56.60％,单位面积出苗量为441.26只/m~2,取得较好的经济效益。 相似文献
6.
研究了后期面盘幼虫不同采苗密度、不同底栖硅藻与稚鲍不同培育密度,对鲍苗的生长与成活率的影响。认为最佳采苗密度应为2万个／m2后期面盘幼虫;当地底栖硅藻混合种的饵料效果优于纯种,剥离后稚鲍的培育密度不直超过4000粒／m2。在640m2水面中有出壳长1．2～1．5cm鲍苗201．6万粒,平均出苗量3150粒／m2。专家鉴定认为,本课题在皱纹盘鲍不同育苗密度、不同饵料对育苗效果的研究方面居国内领先水平。 相似文献
7.
采用皱纹盘鲍大连群体与盘鲍日本群体进行杂交育苗试验和鲍苗种生产。结果表明,皱纹盘鲍和盘鲍正、反交组合的受精率和孵化率均低于两亲本自交组,而其苗种成活率高于两亲本自交组（提高达20％以上）;皱纹盘鲍和盘鲍的正、反交组合鲍苗的生长情况是,其平均壳长明显高于两亲本自交组鲍苗的平均壳长,最长达2．01 cm ;皱纹盘鲍与盘鲍作为亲本进行鲍苗种生产,经160 d培育,共培育出鲍苗种2020．75万只（平均壳长2．01 cm ）,鲍出苗量平均4345．7只／m2。通过鲍种内杂交的育种方法,可以达到改良和优化鲍种质的目的。 相似文献
8.
9.
在全埋式无地沟无法吸污的育苗条件下，利用鲜活生物活饵料进行中华绒螯蟹(Eriocheur Sinensis)俗称河蟹的大棚育苗，配套生物饵料培养池50，000m^2，育苗水体1，680m^3，平均每m^3育苗水体培育出河蟹大眼幼体0.289kg。共育河蟹大眼幼体486kg，其中试验池为1，520m^3水体；单位水体出苗量为0．314kg，对照池为l60m^3水体；单位水体出苗量为0．190kg。试验池比对照池每m^3水体出苗量增产39．5％。 相似文献
10.
《水产科学》2003,22(5)
近日 ,营口市水产研究所的“锯缘青蟹人工育苗研究”和“毛蚶人工育苗技术研究”课题通过了省验收小组的现场验收。锯缘青蟹 ,俗称肉蟹 ,是较为名贵的水产品种。因其生物学特点 ,过去一直是南方的增养殖品种 ,营口市水产研究所经过 3年实验研究 ,获得育苗成功。锯缘青蟹人工育苗研究共使用育苗水体 4 5 0m3,单位水体出苗量 2 94 0只 ,平均体重为 0 0 5g的大眼幼体 ;毛蚶人工育苗技术研究经过验收小组抽样检测 ,结果为 :育苗总水体 199 5m3,附着基总数量 2 36 6 0片 ,平均每片附苗量 92 12 5粒 ,总育苗量 2 1796 8万粒 ,单位水体出苗量 10… 相似文献
11.
该研究目的是建立一套鲍育苗和养殖的生态化模式,包括鲍苗种生态培育模式、鲍陆基生态养成模式和海上鲍藻套养生态养成模式,以克服目前鲍养殖业存在的病害频发、成活率低下等问题,提高鲍养殖的经济效益,降低养殖风险。鲍苗种生态培育模式通过＂光照-微藻-微生态制剂-滤食性动物-鲍苗＂构建复合生物体系;鲍陆基生态养成模式通过池内建立＂复合生物区系＂,并在池外设立生态塘和生态渠进行养殖废水处理的方式构建;海上生态养成模式通过＂鲍藻套养＂构建。共培育鲍苗5批次,培育周期210～240d,共产出鲍苗17.764×104个,平均壳长1.5cm以上,育成率0.78%～1.23%。陆基生态化模式养成商品鲍43.774×104个,平均壳长6.53cm,平均体质量34.6g,成活率87.5%,周期18～20个月。海上鲍生态养成150口网箱,养成商品鲍3×108个,平均壳长6.50cm以上,成活率85%以上,养成时间18～20个月。 相似文献
12.
Miroslava Vivanco‐Aranda Cristian Jorge Gallardo‐Escárate Miguel Ángel del Río‐Portilla 《Aquaculture Research》2011,42(2):161-168
Commercial abalone culture is carried out using flow‐through systems with a high water volume exchange in Baja California, Mexico. The objective of this work was to compare the growth rate and survival of red abalone cultured in two systems. Flow through (daily water exchange rate of 800%) and recirculating systems consisted of a 250 L fibreglass tank and constant aeration, but biofiltration in the recirculating system was provided with a 28 L (1 ft3) bubble‐washed bead filter. Water variables were measured either daily (dissolved oxygen, temperature, pH and salinity) or three times a week (total ammonia nitrogen, nitrate‐nitrogen, nitrite‐nitrogen and alkalinity). Shell length was measured every 2 weeks for 18 weeks. Only the alkalinity and pH were significantly different due to the addition of sodium bicarbonate to the recirculating system. Abalone growth rate was 26.1 ± 15.96 μm day?1 in the recirculating systems and 22.21 ± 18.69 μm day–1 in the flow‐through systems. The final survival was 78.74% in the recirculating systems and 71.82% in the flow‐through systems. Significant differences in the final size and survival of the abalones were found between systems (P<0.05). Therefore, recirculating aquaculture systems is a feasible alternative for juvenile red abalone culture. 相似文献
13.
Xiaohui Wei Wencui Zeng Bin Tang Jian He Nan Chen Xuan Luo Danqing Feng Weiwei You Caihuan Ke 《Aquaculture Research》2019,50(10):2938-2950
The Xishi abalone (Haliotis gigantea) is an economically significant aquaculture species in southern China. We identified a novel orange‐muscle mutation present in less than 2% of the cultured population. High‐performance liquid chromatography and electrospray ionization mass spectrometry identified zeaxanthin and β‐carotene as the two main pigments present in the orange‐muscle abalone. The concentrations of zeaxanthin and β‐carotene detected in the orange‐muscle abalones were significantly higher than those detected in the common abalones (p < 0.01). Notably, the concentration of zeaxanthin was approximately 16.5 times higher in orange‐muscle abalones than in common abalones, which was also the species with highest carotenoid content reported in shellfish to date. Furthermore, the contents of total amino acids and essential amino acids in the orange‐muscle abalone were higher than that in the common abalone, though not significantly, while the content of non‐essential amino acids was significantly higher in the orange‐muscle abalone than that in the common abalone (p < 0.05). The saturated fatty acid content in the orange‐muscle abalones was slightly lower than that in the common abalones, and the unsaturated fatty acid content was higher in the orange‐muscle abalones than that in the common abalones. These results could provide a basis for characterizing the mechanism by which carotenoids accumulate in abalones and further guide the breeding of abalone with orange‐muscle mutants in the future. 相似文献
14.
潮间带垒石蒙网养鲍技术研究 总被引：1，自引：0，他引：1
1994年4月～1995年10月，在4个岩礁区共设置136个石垛，放养壳长1．3～3．0cm鲍苗55．1万只，进行潮间带垒石蒙网养鲍试验。对场址选择、放养密度、规格、投饵方法等进行了研究。结果：产商品鲍19．254t，平均亩产1397．8kg，平均壳长6．81cm，平均个体重39g，成活率89．6％，实现产值693.144万元、利润352.81万元。专家鉴定认为，养殖方式为国内首创，技术水平属世界先进。 相似文献
15.
Fabiola Lafarga‐De la Cruz Gustavo Núñez‐Acuña Cristian Gallardo‐Escárate 《Aquaculture Research》2013,44(8):1206-1220
Two introduced abalone species are currently produced in Chile, red abalone Haliotis rufescens and Japanese abalone Haliotis discus hannai. However, red abalone accounts for 99% of total production, while the Japanese abalone has not adapted well to Chilean coastal waters. This study reports the hatching, growth and thermal tolerance performance in interspecific hybrids produced between red (R) and Japanese (J) abalone. Our results show that egg age and sperm concentration were critical factors to produce hybrids. The cross R♀ × J♂ showed a fertilization rate of 55.3 ± 3.5% using 20‐min‐old eggs and sperm concentrations of 14 × 106 cells mL?1, while the reciprocal cross (J♀ × R♂) was not successful. Further, larval development stages were similar in RR, JJ and RJ hybrid abalones. Among the experimental trials, settlement rate varied from 12.3% to 18.6% and final survival from 20.1% to 31.7%, being the RJ hybrid rates intermediate between parental species. The final shell lengths were similar between RR and RJ hybrids, but significantly higher in JJ abalones. In addition, thermal tolerance was ascertained due its pivotal role for the abalone physiology. Thus, RJ hybrids showed the highest HSP70 gene expression and offers new possibilities to expand Chilean abalone production in warm waters zones. 相似文献
16.
ABSTRACT: A new abalone postlarval culture system, Stott's abalone postlarval production system (SAPPS), is being developed as an alternative method for settling larvae and on-growing postlarval abalone. SAPPS was tested in trial 1 using two commercially available artificial diets, Adam and Amos (Adam; supplied by Adam and Amos, Mt Barker, SA, Australia) and Cosmo (Cos; supplied by Cosmo, Matsuyama, Japan), against the diatom biofilm method (Diatom). In trial 2, SAPPS was tested against the previous production system (PPS, used by Stott et al. 2002). Larvae were induced to metamorphose and the resulting postlarvae were on-grown in 10-L flow-through tanks for 28 days in their respective treatments. The final survival of postlarvae was significantly higher ( P < 0.05) in the SAPPS-Cos group (56.7 ± 11.15%) than in the Diatom (9.4 ± 2.7%) and SAPPS-Adam groups (8.5 ± 1.1%). The final length of postlarvae in SAPPS-Cos (1065 ± 73 µm) was significantly higher ( P < 0.05) than those in the other two treatments (average of 841–883 µm). In trial 2 the metamorphosis rate was improved by using Spirulina platensis. The final length of postlarvae in SAPPS (1449–1471 µm) was significantly higher ( P < 0.05) than PPS (1065–1075 µm) and Diatom (993 µm). There is potential for SAPPS to be used as an alternative to the current diatom method in the culture of postlarval abalone. 相似文献
17.
鲍鱼冷风干燥和自然晾晒试验的比较分析 总被引：3，自引：0，他引：3
研究皱纹盘鲍(Haliotis discus hannai Ino)在冷风干燥和自然晾晒两种干燥方式下的干燥速率、色泽、酸性粘多糖和总糖含量,以及微观结构变化的差异,并进行分析比较。在实验室内采用冷风干燥试验机和自然晾晒方式进行鲍鱼干燥试验。结果显示:当鲍鱼样品干基含水率从238%下降到16%以下时,冷风干燥所需时间约为122 h,是自然晾晒的70%;至干燥完成时冷风干燥鲍鱼多糖含量高于自然晾晒样品;冷风干燥样品通透性明显优于晾晒样品;两种干燥样品的微观结构差异性不明显。综合分析得出,与自然晾晒相比,冷风干燥方式具有干燥时间短,干燥过程易于控制,品质和卫生条件好,适合工业化生产等优点,是一种较佳的鲍鱼干制方法。 相似文献
18.
The growth rate of disk abalone, Haliotis discus hannai, energy consumption and changes in water quality were monitored in a pilot-scale recirculating aquaculture system (RAS) for 155 days. Baffles were installed in the RAS culture tanks to enlarge the attachment area and clean out solid waste materials automatically by hydraulic force only. The experimental disk abalones, of shell length 24.5 ± 0.5 mm, were cultured at three stocking densities, 700, 1300 and 1910 individuals/m2 bottom area, in triplicate. The abalones were fed with sea mustard, Undaria pinnatifida, once a week. The abalone feed conversion rates and daily growth rates ranged from 24.5 to 25.9 and 0.32 to 0.36%, respectively. Their daily shell increments and survival rates ranged from 67.7 to 78.6 μm/day and 87.6–92.2%, respectively. The growth in weight tended to decrease at a culture density of 1300 individuals/m2 bottom area, while shell increments and survival rates were acceptable at this density. The total power consumption for heating was 1185.4 kW, comprising 30.2% of the total power consumption, while the average water exchange rate was only 2.9% per day. The total ammonia nitrogen stabilized below 0.07 mg/L, after conditioning of the biofilter. The NO2−–N, NO3−–N and total suspended solid concentrations were also maintained within acceptable ranges for the normal growth of disk abalone. The use of the RAS with these newly designed culture tanks for disk abalone culture produced 1300 individuals/m2 bottom area with a water exchange rate of only 2.9% per day and used about one-tenth of the heat energy of a conventional flow-through system. 相似文献
19.
Jongoh Nam 《Aquaculture Economics & Management (Blackwell Science)》2013,17(4):474-489
ABSTRACTThis study provides abalone producers and consumers with price forecasting models exhibiting better performance for five classes of abalone prices based on shell size to help farmers predict abalone shipments and enhance the economic activity of consumers. First, the autoregressive-moving average (ARMA) models of abalone producer prices based on information criteria are selected. Second, the best ARMA model using out-of-sample data based on the mean squared error and mean absolute error is determined. Finally, this study compares the predictive accuracy of the better ARMA model and other ARMA models, using a modified Diebold–Mariano test. Higher forecasting accuracy is exhibited by the AR (1,3) model for 8 and 10 abalones per kilogram, the ARMA (1,0) and ARMA [(3),(1)] models for 13 abalones per kilogram, the ARMA (1,0) and ARMA [(1),(2)] models for 15 abalones per kilogram, and the ARMA (1,0) and ARMA (0,1) models for 20 abalones per kilogram. 相似文献
20.
不同类群九孔鲍免疫防御机能的比较 总被引：8，自引：0，他引：8
对不同类群的九孔鲍细胞与体液免疫机能进行比较,结果表明,不同类群的九孔鲍免疫机能具有显著的差异性,复壮鲍(养殖10个月,个体大小为51.8～59.2mm)细胞与体液免疫机能都明显高于退化鲍(养殖20个月,个体大小为37.4～43.1mm)(P<0.01),与野生九孔鲍(个体大小为67.7～76.7mm)相比,复壮鲍细胞免疫机能略高于野生鲍,体液免疫机能则明显低于野生鲍。九孔鲍血细胞在吞噬活动中具有呼吸爆发产生活性氧的功能与特点,活性氧的产生与九孔鲍自身生理、环境温度以及异物数量等因素有显著的相关性(P<0.01)。环境温度由25℃下降至18℃,九孔鲍的细胞与体液免疫机能都有明显的下降。退化鲍在25℃和18℃条件下血淋巴液的抗菌活力水平差异性不明显。酚氧化酶存在于九孔鲍血淋巴液中,但其活性水平不高,在各类九孔鲍之间的差异性也不明显,不能确认为九孔鲍的主要体液免疫因子。 相似文献