臀形頭 的英文怎麼說
中文拼音 [túnxíngtóu]-
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。The measurements used are fork length, head length, upper jaw length, snout length, length of dorsal fin base and anal fin base and the distances from the tip of snout to insertion of dorsal fin, to pectoral fin, to ventral fin and to hard margin of preopercle
此所用於分析之外部非體節形質計有：尾叉長、頭長、上顎長、吻長、眼徑、背鰭基底長、臀鰭基底長以及吻端到前鰓蓋骨后綠、背鰭起點、腹鰭起點、臀鰭起點等11個形質。
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