魚類學名詞

名詞 定義 yolk-sac A bag-like ventral extension of the gut containing nutritive materials that first appears in the fish embryo and is later absorbed by the larva during the stage after hatching and before feeding. 卵黃的囊 消化道的袋狀腹部延長，包含營養物質，第一個在魚胚胎中出現，而且稍後被幼魚吸收，孵化之後與開始進食之前的期間。