…All species of the Pamphinidae family and some species of the Pamphinidae family undergo protoandrogenous sex change, so that all large individuals are female. In the egg-laying and egg-releasing species of Penaeidae and Salvelinae, the eggs hatch as nauplius larvae, which have only three pairs of head appendages, whereas other shrimp species hatch as more advanced zoea larvae. During their planktonic life, they repeatedly molt to become mysis larvae, which then metamorphose into juvenile shrimp. The later mysis larvae often have distinctive forms for each species, and are given special names. … *Some of the terminology that mentions "zoea" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…タラバエビ科のすべての種と,テッポウエビ科の一部では雄性先熟の性転換が行われるため,大型個体はすべて雌である。卵を産み放つクルマエビ類とサクラエビ類では,卵は3対の頭部付属肢だけをもつノープリウスnauplius幼生として孵化するが,他のエビ類はもう少し進んだ時期のゾエアzoea幼生として孵化する。浮遊生活の間に脱皮を繰り返し,ミシスmysis幼生となり,その後稚エビに変態するが,後期幼生であるミシス幼生は各種ごとに特徴的な形態をもつことが多く,特別の名称が与えられている。… ※「zoea」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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