…In terms of taxonomy, this group is intermediate between the primitive salmonids and the evolved perch, but is closer to the perch in some respects, such as having pecten scales, an upper jaw bordered only by the premaxilla, no teeth on the maxilla, well-developed spines on the fins, lacking the orbital sphenoid, and the anterior end of the pelvic girdle attached to the clavicle. In the Percopsidae, the pelvic fins are ventrally located like the salmonids, have fatty fins, and still retain a vestigial airway connecting the swim bladder to the esophagus. However, the dorsal and anal fins have weak spines. … *Some of the terminology that mentions "Percopsidae" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…分類上この群は原始的なサケ型と進化したスズキ型との中間に位置するが,櫛鱗(しつりん)をもち,上あごが前上顎骨のみで縁取られ,主上顎骨には歯がなく,ひれに棘条(きよくじよう)が発達し,眼窩蝶形骨(がんかちようけいこつ)を欠き,腰帯の前端が擬鎖骨に付着するなどの諸点でスズキ型により近いとされる。サケスズキ科Percopsidaeではサケ型に似て腹びれが腹位にあり,あぶらびれを備え,痕跡的ながらうきぶくろと食道をつなぐ気道も残っている。ただし,背びれとしりびれには弱い棘条がある。… ※「Percopsidae」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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