共查询到20条相似文献，搜索用时 265 毫秒
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根据鲆鲽类海水鱼的生理生态特点,整合双排水、多级物理过滤、臭氧消毒杀菌、纯氧混合增氧等关键的水质调控技术,构建了低能耗、低成本、高效益的半封闭循环水养殖系统,以大菱鲆为试验对象,通过试运行探讨了其可行性和实用性。养殖试验分3个阶段,对期间各项水质指标的动态变化进行了监测。结果表明:在日换水率为50 %时,各项水质指标均保持在鲆鲽类生长的适宜范围内；大菱鲆生长情况良好,成活率92 %,平均养殖密度达18.4 kg·m-3；与流水养殖模式比较,养鱼污水经过循环利用,每生产1 kg鱼节约能耗24 %,节水85 %。该鲆鲽类半封闭循环水养殖系统的可行性和经济性良好,适宜于在山东、河北、辽宁等北方沿海地区大力推广应用。 相似文献
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弧菌病是多种海水养殖鱼类最为常见的一种细菌性疾病,鲈科、鲷科、魨科、鯵科及鲆鲽类等都有可能患病受害。自2001年以来,文登市为全国水产养殖病害鲆鲽鱼类及虾类测报单位,在测报调查中,多次发现测报鱼类患有弧 相似文献
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对近几年迅猛发展起来的山东省刺参养殖产业状况进行了详细的调查研究与分析。山东省作为我国刺参养殖的主产地,初步构建了刺参养殖优势产业带。以烟台、威海、青岛等地区为原主产区的刺参养殖属刺参优势产业带,主导着行业的发展;东营、滨州二地市属开发引进刺参养殖新兴产业带,证明在我省西部部分沿海实施"东参西养"是可行的;以日照、莱州地区为主的深水井大棚工厂化养参属新模式开发优势产业带,成为2007年以来刺参养殖的新亮点。此外,本文系统总结了山东省刺参养殖产业发展所面临的问题与挑战,提出了发展对策,对山东省乃至我国刺参养殖业的健康可持续发展具有很好的指导意义,并为相关主管部门的决策导向提供了可靠的理论依据和技术支持。 相似文献
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Jarunan Pratoomyot Thammasak Torcharoen Pairach Thongra-ar Andrew P. Shinn 《Journal of the World Aquaculture Society》2020,51(1):282-286
Ornamental harlequin shrimp, Hymenocera picta, are commonly maintained on live comet sea stars, Linckia multifora. In Thailand, both species are commonly collected from the wild, raising concerns regarding the sustainability of such practices. As a step toward the sustainable aquaculture of both, methods of their culture and nutrition were investigated. Under captive conditions, harlequin shrimp readily predate, and can be maintained upon the astropectinid sand star Astropecten indicus as an alternative live feed during periods when comet sea stars are unavailable. Wild A. indicus subsequently spawned multiple times shortly after their collection; the eggs (300 μm diameter) were transferred to static aquaria. Following the appearance of planktonic bipinnaria, larval sea stars were fed a 50:50 Chaetoceros calcitrans and Isochrysis galbana diet. Eleven days post-transfer, brachiolaria stages began to settle; stages were then fed concentrated I. galbana. When specimens measured 1–2 mm in diameter, they were transferred onto an in-house formulated Amphiprion diet (>50% protein, >16% lipid). Sea stars were graded regularly; they matured and spawned after 6 months. Populations were maintained for more than three successive generations, demonstrating their ready culture under captive conditions, representing the first harvestable aquaculture of a sea star as a step toward supporting the sustainable culture of a primary, marine species. 相似文献
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我国水产养殖设施模式发展研究 总被引：4，自引：5，他引：4
作为世界水产养殖大国,我国的养殖设施模式要走上可持续发展的轨道,应该在为健康养殖提供进一步保障的前提下,更加注重系统在"节水、节地、节能、减排"方面的功效。养殖池塘、流水型养殖设施、循环水养殖设施和网箱养殖设施是我国集约化养殖的主要设施模式。这些设施在发挥巨大生产力的同时,在养殖水环境控制、水资源利用、生产系统效益、系统对环境的影响等方面,不同程度地存在着问题或矛盾,没能发挥出现代设施系统在健康养殖和产业可持续发展上应有的作用。本文在对以上4种主要养殖设施模式进行分析的基础上,结合养殖设施科技领域的研究成果,提出未来我国水产养殖设施模式的发展方向以及需要解决的重大科技问题,包括池塘工程化生态养殖设施、节水型养殖设施、经济型循环水养殖设施、系统化深水网箱养殖设施等4种发展模式。 相似文献
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国外贻贝养殖工程设施发展近况 总被引：1，自引：0，他引：1
近岸养殖渔业的发展受到环境污染的影响和养殖容量的限制,国外近年来积极推进离岸深海养殖技术.综述了国外贻贝离岸养殖模式及养成设施的文献资料,用图片形式介绍了几种养殖设施的设计理念和结构,其中包括平台吊养、浮筏吊养等上浮式养殖模式以及半潜筏式吊养、半潜管式吊养等新型养殖模式,并提出了离岸养殖需注意的一些实际问题. 相似文献
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Colin Hannon Rick A. Officer Jean Le Dorven John Chamberlain 《Aquaculture International》2014,22(6):1813-1822
The Japanese development of mass culture techniques for Ulvella lens during the 1980s for aquaculture has stimulated the development of rearing techniques for abalone and sea urchins in producing countries. However, since the late 1980s, there has not been any in-depth evaluation of culture methods for U. lens, nor the development of a new robust method for aquaculture operators. The use of this known inducer for settlement of veliger larvae has not been employed on a commercial scale in Ireland or in European aquaculture systems. The new methodology described here has produced a threefold increase in the settlement of sea urchins (Paracentrotus lividus) and is recommended for adoption by the European aquaculture industry. 相似文献
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This study aimed to analyze the economic effect of the red sea bream Pagrus major offshore aquaculture production system in Korea. Based on the data collected, revenue and expenses throughout the culture period were calculated, and the net present value and internal rate of return of the ten-year cash flow and cash outflow were estimated in order to determine the economic validity of red sea bream offshore aquaculture production. Results showed that the red sea bream offshore aquaculture production system had high profitability based on the current production and market conditions. This is because of its relatively high survival rate, relatively low feed conversion ratio, and good market price level. However, sensitivity analyses of the main variables indicated that the profitability of red sea bream offshore aquaculture is highly vulnerable to production conditions and market condition changes. 相似文献
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我国深远海网箱养殖工程与装备技术研究综述 总被引：1，自引：0，他引：1
在远离大陆的深远海水域发展大型网箱养殖,已成为缓解近海养殖环境压力、突破资源受限和空间制约问题的重要举措。深远海网箱养殖产业的蓬勃发展,加速促进了养殖方式转型升级和海洋养殖空间大幅拓展,形成了海洋设施养殖新发展格局。本文立足我国网箱养殖产业发展现状,分析深远海网箱养殖产业发展需求、发展前景以及设施装备科技需求,详细介绍国内外深远海网箱养殖工程与有关装备技术的研究应用情况,分析我国深远海网箱养殖工程与装备发展面临的主要问题,并从科学规划、科技引领、规范建设和创新模式等方面,对深远海网箱养殖产业发展提出相关建议。 相似文献
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本研究以我国北方典型岸基半开放刺参(Apostichopus japonicus)养殖池塘为对象,利用高通量测序技术构建冻融期刺参养殖池塘沉积物菌群16S rRNA基因测序文库,解析封冰期、融冰期和化冰期刺参养殖池塘沉积物菌群结构特征,并查明影响菌群结构的主导环境因子。结果显示,冻融期刺参养殖池塘沉积物菌群丰度和多样性表现为整体下调趋势,在融冰初期呈现显著性波动(P<0.05)。冻融期刺参养殖池塘沉积物菌群结构呈现显著性差异,封冰期、融冰期和化冰期差异菌群分别隶属于厚壁菌门(Firmicutes)、酸杆菌门(Acidobacteria)和软壁菌门(Tenericutes)。尽管不同阶段微生物相对丰度比例不同,但第一优势菌门均隶属于变形菌门(Proteobacteria),相对丰度高于49.04%;次优势菌门则呈现出显著性变化,其中,封冰期为拟杆菌门(Bacteroidetes),融冰期为绿弯菌门(Chloroflexi)和放线菌门(Actinobacteria),化冰期为浮霉菌门(Planctomycetes)。环境因子与菌群相关性分析表明,冻融期刺参养殖池塘沉积物菌群结构与环境因子具有显著相关性(P<0.05),温度、盐度、总氮和总有机碳是沉积物菌群的主导环境因子。本研究将为刺参养殖池塘精细化管理提供理论依据。 相似文献