农学 >>> 农学总论 作物学 园艺学 土壤学 植物保护学 农药学 林学 畜牧学 兽医学 水产学
搜索结果: 1-9 共查到农学 Fishes相关记录9条 . 查询时间(0.078 秒)
To characterize the sensitivity of environmental low temperature on peripheral tissues of Channa punctatus, species of fishes which are energetic and survive in the critical environment, were exposed ...
Fishes on Cotton Farms guide helping farmers help fish     Fishes  Cotton Farms  farmers       font style='font-size:12px;'> 2009/12/15
Irrigators and anglers in North West NSW will be able to learn more about how they can help native fish and their habitat with the release of the new Fishes on Cotton Farms book.The free publication h...
Medaka (Oryzias latipes) populations have recently declined to such a level that they are listed as a species in danger of extinction in the Red Data Book. And a decline in the numbers of catfish and ...
During surveys of the trichodinid parasites in freshwater and estuarine fishes in the state of West Bengal, India five species of the genus Trichodina from the gills of host fishes were investigated a...
During surveys of the trichodinid parasites in freshwater and estuarine fishes in Chittagong Division, Bangladesh four new species of the genus Trichodina were investigated and morphologically studied...
Study of fish captures could bring out valuable information on tendencies in stocks dynamics as well as on the level of “fishing pressure” on natural fish population. Decreasing amount of annual captu...
MIGRATION OF FISHES IN ROMANIAN DANUBE RIVER (Nº 1)     migration  fish  capture dynamic  Danube  fulton factor  protection       font style='font-size:12px;'> 2010/3/23
Present review paper tries to show the main aspects of migration of fishes in Romanian sector of Danube River. The Danube River has a large hydrographical basin, being the second largest river in Eur...
Marine migratory sturgeons form one of the most valuable fish population of the Lower Danube River ecosystem and are also extremely important for the economy of Romania and some other riverside count...
The main purpose of this paper is to actualize last data on Danube shad (Alosa pontica Eichwald,1838) migration process in Danube River. This species was widely studied last time in Danube River, but ...

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...