Population of the chinese sturgeon migrates to yangtze river every year has decreased from about 2176 individuals shortly after ge zhou damming to 1000 or so at present 每年洄游至长江的中华鲟产卵群体数量，已从葛洲坝截流初期的约2176尾下降到目前的1000尾左右。
Catching flower crab and sturgeon basically rely on dragnet exercise and gill net exercise , and cockboat door is multi - purpose and latter , in cloth net sea , crab touchs be pestered to manacle 捕捞花蟹和鲟主要靠拖网作业和刺网作业，而小艇户多用后者，布网海中，蟹触之被纠缠束缚。
Stocks of the caspian ' s beluga sturgeon have dropped by about 90 percent over the past two decades due to destruction of spawning sites , pollution and the end of soviet - era fishing regulation 由于产卵地被破坏、环境污染和前苏联时期捕捞规定的取消，在过去的20年中，里海鲟鱼的数量比原先减少了90 % 。
Sturgeon , or call stone old ghost , head cuirass is hexagonal , chela is sufficient powerful , sufficient edge back an abdomen provides bristle , congeneric kind more , or viridescence color , or he gong is lubricious 鲟，或称石老鬼，头胸甲为六角形，螯足强大，足背腹沿具刚毛，同属种较多，或青绿色，或赫红色。
The postpartum chinese sturgeon mother can be keep alive above the situation breaking an abdomen fetching an ovum but being certain to die after laying , which has already been an extraordinary progress at present 在其它大型鲟鱼类目前还处于破腹取卵而产后必死无疑的状况下，中华鲟产后亲鱼可以保活已经是了不起的进步。
According to the biological characteristic , especially the reproductive habit , the present resources and economical value , measurements of protection and development of the sturgeon fishery were put forward 根据黑龙江鲟科鱼类资源现状、群体结构变动情况及其生物学特点，阐明了保护和发展黑龙江鲟科鱼类的必要性并提出了建议。
Moscow ( reuters ) - russian police battling fish smugglers have deployed a cat to sniff out contraband , including caspian sea sturgeon , the fish that produce russia ' s world - famous caviar 莫斯科(路透社)目前,正与鱼走私者进行斗争的俄罗斯警方配备了一只猫,来嗅出违禁品,其中包括里海鲟鱼,这种鱼可用来制造驰名世界的俄罗斯鱼子酱。
The kremlin leader , who is due to step down at the end of his second term next march , looked every bit the seasoned campaigner when he lifted the sturgeon at a fish farm in southern russia and gave the creature a peck on the head 即将于明年三月在第二届任期结束后卸任的克林姆林宫领袖当在俄国南部的一家渔场捧起一条鲟鱼并在鱼额头上吻了一下的时候全然看上去是象是一位有经验的竞选者。
The method for determining avermectin ( avm ) in muscle of sturgeon ( a . schrenckif ) by high performance liquid chromatography with fluorescence detector was established . the homogenized muscle sample was extracted by acetonitrile , following centrifugation at 3000 g for 15 min 采用乙腈作为肌肉中蛋白沉淀剂和阿维菌素的提取剂，经碱性氧化铝spe柱纯化，蒸干和衍生化，用高效液相色谱( hplc )检测。
