农学 >>> 水产学 >>> 水产养殖学 >>>
搜索结果: 1-10 共查到知识库 水产养殖学 Fish相关记录10条 . 查询时间(0.109 秒)
The Deepwater Horizon disaster released more than 636 million L of crude oil into the northern Gulf of Mexico. The spill oiled upper surface water spawning habitats for many commercially and ecologica...
In August 2007, the 0+ juvenile fish assemblage of the upper River Elbe was surveyed using electrofishing. Thirty-six localities were sampled along a 177 km long section between the towns of Verdek an...
Numerous species available for culture, and lengthy, tedious and demanding digestibility experiments necessitate the use of tabulated values to calculate the apparent digestible nutrient contents of c...
Fish communities of the Bečva River were studied in summer and autumn 2000 and 2001. Electric fishing gear (Honda EX 1000, DC 230 V, 0.75–0.9 kW) was used for sampling. Four sampling sites (Grymo...
The Odra River, 55.2 kmof its length, is winding through the Poodří Protected Landscape Area, which has total area of 81,5 km2. More than 80% of its stream has retained the natural cha...
A synchronous study of 0+ juvenile fish in three lowland reservoirs (Mu歰v, V靤tonice, Nov?Ml齨y) of the Nov?Ml齨y dam (Czech Republic) was conducted in July 1997. Fish were sampled by fry beach seine and...
以本实验室构建的半滑舌鳎BAC文库为基础,通过对其进行有序混合,构建了两步PCR筛选体系;对性别决定相关的sox9基因的序列设计特异性引物,筛选获得阳性单一BAC克隆。利用BAC-FISH技术将此包含sox9基因的BAC克隆定位在半滑舌鳎染色体上。结果显示,sox9基因在雌、雄半滑舌鳎的一对常染色体的长臂上分别存在2个杂交信号位点,信号稳定且特异。研究证实了该文库筛选体系的有效性;首次实现了对性别...
Recently, environmental conservation has been considered to be a more important part of the design of irrigation barrages than before. In this study, we investigated the spatial patterns of local flow...
Recent progress in an understanding of the role of thyroid hormone (TH) on fish development was reviewed with particular reference to fish farming. TH is a small liposoluble hormone produced in thyroi...
In extensive river floodplains and deltaic lowlands, floods lasting several months render the land unavailable for crop (often rice) production during the rainy season. Aside from crop production duri...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...