perch相关论文
Background:Electrocution and collisions on power lines are among the leading causes of non-natural mortality for birds.P......
澳洲银鲈(Bidyanus bidyanus),英文名silver perch。该鱼20世纪初在澳洲开始引起关注,但直到60年代才开始人工养殖。90年代初该鱼......
Once upon a time， there was a little bird which got stuck in a flurry （一阵） of snow because she never shut her beak （鸟嘴） a......
动物王国奥妙无穷,令人着迷。而我们在探索动物王国的时候也难免被一些表象迷惑,产生一些误解。如果说人类靠神话、传说和故事得以......
位于亚热带国家的我们,每到炎热的夏天,在河口区会有一种闪着红色眼睛的庞大怪物,它生性凶残、贪婪、有著利刃般的鳃盖。尤其是中......
A lady was walking down the street to work.She saw a parrot on a perch~([栖木]) in front of a pet store. The parrot said......
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view......
REGIONAL DIFFERENTIATION OF CRITICAL CONCENTRATION OF ARSENIC(As) AND CADMIUM (Cd) IN MAIN SOIL TYPE
Studies of critical concentration distribution features of polluted elements of Cd and As in main soil types of China, s......
Once there was a king who received a gift of two magnificent falcons.They were the most beautiful birds he had ever seen......
In situ determination on food consumption and ecological conversion efficiency of a marine fish spec
The food consumption and ecological conversion efficiency of a species marine pelagic andsmall size fish, Hyporhamphus s......
有一周时间,阳光多一些,雪化了,树枝卸下了重负,向空中伸展。我想可以尝试做个雪屋。我切割出大雪块,然后把它们围成一圈。“惊悚......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Fish size and harvest density generally exhibit a negative relationship in pond culture, but the influence that pond sub......
受育雏育成方式影响,传统笼养鸡群对立体系统适应性较差,导致严重的行为问题。该文以传统笼养育成鸡群为试验对象,探究育成期增加......
本实验用浓度为0.15 mg/m L的孔雀石绿药浴花鲈1 h后转移至水泥池中用淡水养殖,研究孔雀石绿（MG）及其代谢产物隐色孔雀石绿（LMG）在花鲈......
Habitat use and space preferences of Eurasian Bullfinches(Pyrrhula pyrrhula)in northwestern Iberia t
Background:For all vertebrates in general,a concerted effort to move beyond single season research is vital to improve o......
采用种子纵切法研究了新川中岛桃种胚发育.结果表明:在山东沂蒙山区新川中岛桃种胚发育从5月30日开始,6月6日胚和胚乳能明显区分开......
以鲶鱼为主要原料,研究鲈鱼添加比例,各种蔬菜（香菇、玉米、芹菜、黄瓜、荸荠）及坚果（杏仁）的添加比例对复合鱼肉饼品质的影响,通过模......
用不同比例的KCl部分替代NaCl腌制,在15℃、80%~90%相对湿度条件下风干成熟84 h得风干鲈鱼产品。通过测定产品中理化指标、挥发性......
通过一个城市住区的设计工作,探索了＂可持续发展＂及＂新都市主义＂在城市住区规划设计中的应用,提出＂多层次景观空间＂对城市人居的积极意义......
本试验观察蛋鸡对栖架材质（木质、塑料、钢质）和直径（3、6、9cm）的选择性，并分析了栖架对蛋鸡采食、饮水、趴卧、梳羽及舒展等行为的影......
A few specimens of the exotic fish, Nile Perch, (Lates niloticus, Linnaeus 1758) were transferred into Lake Victoria in ......
The goal of this study was to determine the short-term effects of the quality (UV-A/UV-B ratio) and quantity (irradiance......
Distillers dried grains with solubles (DDGS) in combination with soy protein concentrate (SPC) with and without an essen......
