查询词典 Anseriformes

Species in Ciconiiformes, 6 species in Gruiformse, 17 species in Anseriformes, 16 species in Charadriiformes, 1 species in Gaviiformes, 1 species in Podicipedifromse, 1 species in Phalacrocoraciformes, 6 species in Lariformes. The largest number of them came from Anseriformes and Lariformes .

本次调查共记录到56种水鸟，分别属于8目13科，其中鹳形目8种鹤形目6种，雁形目17种，形目16种，潜鸟目1种，鸊鷉目1种，鹈形目1种，鸥形目6种，数量最多的是鸥形目和雁形目的水鸟。

After two-cluster testing,branch length testing and relative rate testing ,two sequences(Melantitta nigra and Aythya americana) of 15 Cty b sequences were deleted because thek evolutionary rate were heterogeneous. The divergence between Anseriformes and Galliformes was chosen as an anchor point. Nucleotide sequence and amino acid sequence of 13 sequences data set was used to calibrated Anatidae molecular clocks. The results indicated that amino acid sequence is better than nucleotide sequence when divergence time is calculated with two kinds of sequences. The reliable divergence time of Anatidae were estimated with """"1+2TiTv"""" model.

经过二簇检验、分枝长度检验和相对速率检验，删除2条速率不恒定的序列后，用剩余的13条序列，以鸡形目与雁形目的分歧时间(89.8MYA)为锚定点，用顺序标定法标定鸭科鸟类分子钟的分析结果表明，用&1+2TiTv&分析得到的鸭科鸟类的分歧时间比较可靠；氨基酸序列用泊松校正模型和Γ模型估计的分类单元间的分歧时间则比较一致，表明氨基酸序列更适合用于鸭科鸟类分子钟的研究；用同一基因标定分子钟时，较长序列得到的结果标准误比较小；与核苷酸序列相比，氨基酸序列更适于用作分子钟的标定。

Aves Anseriformes Anatidae Anas River.

鸟纲雁形目鸭科河鸭属。

They belonged to 14 genera,27 families,50 orders,in which the anseriformes,charadriiformes and lariformes genera were the major ones.

该湖泊地处半干旱区东端向半湿润气候区的过渡带，为一敏感的气候区[1]。

Trumpeter Swans belong to the avian order Anseriformes, family Anatida, along with ducks and geese.

号手天鹅属于雁形目鸟类秩序，家庭Anatida ，随着鸭和鹅。

From May to June 2001~2005 (except 2003), in the Honghuaerji area of Inner Mongolia, sampling method was applied to investigate the Bird Communities Structure of Grassland-Forest Ecosystems, Results indicated that:(1)In the Honghuaerji area, Passeriformes, Charadriiformes and Anseriformes were main birds, in summer reproducing season.

2001～2005年5～6月(除2003年)，在内蒙古红花尔基地区，应用样方调查法研究了草原-森林生态系统鸟类群落结构，结果表明：(1)在红花尔基地区，夏季繁殖季节鸟类组成是以雀形目、鸻形目和雁形目为主。

Duck viral enteritis, or duck plague, was caused by duck enteritis virus.DVE was an acute, heat and septicaemic contagious viral disease that naturally affecting birds of the order Anseriformes.

鸭病毒性肠炎(Duck viral enteritis，DVE)，又名鸭瘟(Duck plague，DP)，是由鸭肠炎病毒(Duck enteritis virus，DEV )引起的鸭、鹅及多种雁形目禽类的一种急性、热性、败血性传染病。

You'll be in trouble it you don't watch out .

如果你不注意，你会有麻烦的。

Shaped like a biconvex lens.Of, relating to, or having the form of a hyperbola.

双曲线的属于双曲线的，与之有关的，或有双曲线形状的