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全面分析了我国渔船装备技术水平落后,远不能适应现代渔业建设的总体要求,难以满足提升海洋战略地位迫切需要的现状。深度解析了渔船装备升级面临的矛盾:资源养护与海洋捕捞力量严重过剩之间的矛盾、渔业经济组织弱小与渔船升级发展之间的矛盾、渔民增收与渔船改造投资之间的矛盾、渔民素质与新技术的应用之间的矛盾;阐明了渔船装备技术升级有利于促进产业转型升级、扩内需保增长,有利于维护国家海洋权益、开发公海渔业资源,有利于提升防灾减灾能力、保障渔业生产安全,有利于推进渔业节能减排、创建节约型社会;提出了渔船装备技术升级的对策措施是落实和完善渔船管理政策法规、推进渔船装备技术升级运行模式创新、加强渔船研发设计能力和建造能力建设。 相似文献
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近年来,中央十分重视“三农”建设,制定了一系列强农惠农的政策,尤其是农机购置补贴政策的实施,对于调动农民购置和使用农业机械的积极性,加快推进农业机械化,提高农业综合生产能力,促进收业稳定增产和农民持续增收,带动农机服务业和相关产业发展,具有十分重要的意义。渔机具行业属于大农业范畴,渔民应该和农民一样,享受同等的政策待遇。为此,中国渔船渔机渔具行业协会（以下简称协会）近年来始终积极推进渔机具产品纳入农机产品补贴工作,以期通过补贴,拉动渔船、渔机、渔具产品的内需市场,惠及广大渔民,促进行业发展,发挥政府与企业间的桥梁纽带作用。对此,本刊记者针对绳网具企业最关心的话题,采访了协会秘书长姚立民,让他为我们一一解答这些关系到渔业民生的问题。 相似文献
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4月16日上午。磁县农牧局渔政监督管理站和县财政局工作人员来到岳城、东武仕水库渔民聚集地,对2009年度上半年渔业机动渔船燃油财政补贴进行了现场发放。此次发放的渔业机动渔船主机功率总计为8254．77千瓦．共发放金额46．95万元,共有193户渔民享受到中央财政对渔民使用机动渔船的油价补贴。 相似文献
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实施农机购置补贴是落实党的强农惠农富农政策的重要内容,也是提高我国农业机械装备水平、促进农业稳定发展和农民持续增收、推动农机工业振兴的重大举措。截至8月30日,今年全国共实施中央财政农机购置补贴资金142.9亿元,中央财政第一批补贴资金基本实施完成,补贴农机具405.2万台(套),受益农户311.7万户。渔机是农机的一种,我们从多方面进行渔机补贴政策解读,进一步提高广大渔民群众对政策的知晓率,增强政策的透明度,扩大政策的影响力;推动现代渔业转型升级,提升渔业生产力。 相似文献
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水硬度对七彩神仙鱼幼鱼发育的影响 总被引：4，自引：0，他引：4
采用不同硬度的水对七彩神仙鱼幼鱼进行饲养。6周龄幼鱼在硬度为7.94°dH±0.30°dH时饲养84d后,比在硬度为14.71°dH±0.23°dH水中的幼鱼个体大,生长速度快。表明较高硬度的水有利于七彩神仙鱼幼鱼的生长发育。 相似文献
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The variation of virulence of Renibacterium salmoninarum , the causative agent of bacterial kidney disease (BKD) in salmonid fish, was studied by infecting rainbow trout, Oncorhynchus mykiss (Walbaum), with two isolates (strains 325 and 932) from diseased Atlantic salmon, Salmo salar L., and one isolate (strain 4366) from an apparently healthy Atlantic salmon. Coho salmon, Oncorhynchus kisutch (Walbaum), were injected with the strain 932 to estimate difference in fish species resistance. Fish were removed by random sampling for other study purposes, a study design possible with analysis of lifetime distributions incorporating both sampling-, death- and survival-times. At the end of the experiment, the rainbow trout infected with strains 325, 932 and 4366 had a survival probability of 33%, 51% and 72%, respectively. The coho salmon infected with strain 932 had a 26% survival probability. The strain differences were significant according to the log-rank test, and the risk ratio between the strains ranged from 1·8 to 5·4. The strain from the apparently healthy fish was least virulent. The survival of the fish species was different over time. Rainbow trout were more likely to die early in the time course, but high numbers of coho died later, resulting in an overall risk of mortality of 1·4 in favour of rainbow trout. Differences in virulence may reflect changed selective pressure on R. salmoninarum when introduced from feral stocks into the environment of fish farms. 相似文献
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《水生生物资源》2003,16(5):461-465
Anti-proteinase activity was demonstrated in the seminal plasma of cyprinid fish species (bream, chub, ide, dace, asp, goldfish, roach, common carp) using electrophoretic techniques combined with a detection method based on inhibition of bovine trypsin. We found species-specific protease inhibitors in the seminal plasma of cyprinids. At least three bands of protease inhibitors with different migration rates could be identified by native PAGE. Higher variability was characterized for bands with slower migration rates. Visualization of inhibitors after SDS-PAGE under non-reducing conditions allowed estimation of their molecular weights. Apparent molecular weights were within the range of 51–59 and 47–54 kDa for the bands with slower and moderate migration rates, respectively. The molecular weight of fast migration bands for roach and common carp were estimated to 23 and 30 kDa, respectively. Inhibitors of common carp seminal plasma differed in their affinity toward serine proteases. Three inhibitors in common carp seminal plasma could be visualized using cod and bovine trypsin, but only two inhibitors (of high molecular weight) were recognized with chymotrypsin. There were differences in anti-proteinase activity and seminal plasma protein concentration in relation to the origin of common carp seminal plasma (breeding lines) and time of milt collection (spawning vs. post-spawning season). 相似文献
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该研究通过肉眼观察、镜检,进行干露、饥饿、盐度突降、福尔马林等抗性试验,并采用病毒检测等方法,以期建立评估斑节对虾（Penaeus monodon）虾苗活力和质量标准。结果表明,斑节对虾健康虾苗具有趋光性、集群性,体表光洁,肌肉透亮,肠胃食物充盈等特性。测试虾苗干露时间以15min为宜,健康虾苗干露后能立即恢复活力,而病弱虾苗多出现死亡、昏迷现象;虾苗的成活率随饥饿时间的延长而降低,随福尔马林浓度升高和时间延长而降低,随盐度突降幅度增加而降低。健康虾苗能忍受100～200μL·L^-1福尔马林溶液30min,成活率近100％;在盐度20～30下虾苗的成活情况较好,而其在淡水中仅能存活1h。对虾苗进行病毒检测,可以避免养殖中因虾苗携带病毒而可能导致的病毒性疾病的暴发。 相似文献
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鳟鱼发眼卵和旨种运输是养鳟生产的重要环节。发眼卵多在冬季和早春运输,苗种多在晚春和夏季运输。苗种运输大多以鱼篓充氧进行短距离汽车运输,长途运输冷水性鱼苗种的实例很少。本文总结了金鳟和虹鳟苗种长途运输方法,以期与养鳟业界共同交流提高。一、包装材料和方法内包装材料是苗种运输专用塑料袋,规格54×104cm,外包装是泡沫塑料箱,规格63.5×45.5×30．5cm,纸箱规格64×46×32．5cm。塑料袋采取双层式,内装苗种和水共12.5kg,其中苗种0.5-1．3kg,100－2000尾。起运前苗种停食1－2天。运鱼用水水温调至6℃,鱼、水入袋后袋内… 相似文献
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该研究选取具有多态性的6对微卫星引物对构建的2批合浦珠母贝(Pinctada fucata)完全双列杂交家系的遗传多样性进行了分析。6个微卫星标记在9个家系360个个体中共检测到32个等位基因,有效等位基因(Ne)为1.758 7~3.586 5,观测杂合度(Ho)为0.144 4~0.488 9,期望杂合度(He)为0.432 0~0.722 2,Shannon指数(I)为0.691 9~1.507 4。9个家系都有单态位点,平均Ho为0.129 2~0.466 7,平均He为0.155 0~0.439 6,平均I为0.248 5~0.712 2。有19个位点(占35.19%)极显著地偏离Hardy-Weinberg平衡。各家系之间的遗传距离为0.109 0~1.137 2,遗传相似性系数为0.320 7~0.896 8。家系L4B46与L4B48的遗传距离最大,与D3D313的遗传距离最小。UPGMA法聚类分析显示,9个家系分为3支,L4B48单独成一支,B4D426、B4D427与D4B445聚成一支,其余家系聚成一支。该研究结果为合浦珠母贝家系选择育种的亲本选择与交配设计提供了科学依据。 相似文献
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猪的胎盘属于弥散型胎盘,这种胎盘的结构特点和饲养管理的不当,常常导致母猪胎衣不下发生,给生猪的生产繁殖带来极大损失。本文针对母猪胎衣不下发生病因、综合防治进行详细阐述,旨在对预防和治疗胎衣不下能有所帮助。 相似文献
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牙鲆刺激隐核虫病的防治 总被引：1，自引：0，他引：1
2005年七、八月份,乐亭、滦南一带多家工厂化牙鲆养殖场发生刺激隐核虫病,此种病虫害发病急、传染快、死亡率高。发生过该病的养殖场牙鲆死亡率一般都在50％～80％之间,这种病害给牙鲆养殖业带来很大损失。 相似文献