魚類群聚 的英文怎麼說
中文拼音 [yúlèiqúnjù]
魚類群聚
英文
fish concentration-
Phylogenetic tree was constructed and displayed that a. platensis fachb341, a. maxima ouqdsm and a. platensis fachb439 formed the monophyletic linage, which was fully supported by bootstrap values ( 1000 ), while spirulina fachb440 and anabaena pcc7120 clustered in another linage with the bootstrap value of 909
系統發生分析結果顯示，三個節旋藻品系形成一個小的分支，其自舉值為1000而螺旋藻與魚腥藻聚合為一個類群，自舉值為909 。同時我們以鈍頂節旋藻fachb341m platenstsfachb341 ）為材料，克隆了2073hp長的rubisco序列。Cluster analysis by upgma methods indicated that these five stocks might be divided into three clusters. results of rapd a nalysis suggested that extensive genetic diversity was detected in this species and the genetic divergence among stocks was relatively high ; upgma phylogenetic tree showed there existed three geographic populations of p. polyactis in the yellow sea and the east china sea, which supported the previous conclusion by morphological and ecological methods. part two : the genetic diversity between trichiurus lepturus and eupleurogrammus muticus random amplified polymorphic dna ( rapd ) technique was applied to 12 individuals from each species of the hairtail fishes trichiurus lepturus and eupleurogrammus muticus collected from the yellow sea
50一2 . 44 ） ，群體內和群體間的遺傳變異比例分別為69 %和31 % ;群體間的平均遺傳相似度和遺傳距離分別為0 . 9139和o . q861 ;用非加權配對算數平均法（ unweightedpair - groupmethodofari山m七tiome即s ， upgma ）聚類分析的結果表明，所分析的5個群體可被分為3個地理群系，從分子水平上支持了過去有關學者把黃海和東海的小黃魚劃分為北中南3個地理群系的觀點。There are many salt pans, fish farms and brushwood in the area. currently, all salt pans in sihcao area have been shut down. as there nutrition salt circulation is stable, black - winged stilts and kentish plovers will breed here in summer ; and scolopacidae and ardeidae will gather here in winter
此區多為鹽田、魚瘟、灌木叢，目前四草地區的鹽田已全部停產，由於有穩定的營養鹽循環，夏天會有高蹺行鳥、東方環頸行鳥至此繁殖，冬天則群聚大量的鷸行鳥科、鷺科鳥類。Cytochrome b gene compared with characiforms, cypriniforms and salmoniforms ; ( 2 ) the molecular phylogenetic trees suggest that siluriforms form a monophyletic group and have a close relationship with characiforms ; ( 3 ) the families of pangasiidae, claroteidae, ictaluridae, cranoglanididae, schilbidae and clariidae form a monophyletic group in the three molecular phylogenetic trees. the family bagridae branched with schilbidae which comes from china ; the family akysidae branched with amblycipitidae, but the phylogenetic positions of the families siluridae, sisoridae and pimelodidae are not recognised
魚芒科、棘脂?科、叉尾?科、長臀?科、刀鯰科與鬍子鯰科在三種方法構建的分子系統樹中均結合在一起，形成一大單系群； ?科均與來自中國的刀鯰科魚類聚在一起；粒鯰科與鈍頭跪科也均聚在一起；但鯰科、 ?科和油鯰科的系統發育位置不定。Scientists study the behavior of animal swarms, such as schools of fish, to predict the way humans might behave in such densely packed groups
科學家們正在研究動物群體的行為，如魚群，以推測人類聚集在一起時可能有的舉止。分享友人