Larval and juvenile development of two dragonets, Repomucenus richardsonii and R. valenciennei, reared in a laboratory
Larval and juvenile development of two dragonets, Repomucenus richardsonii and R. valenciennei, reared in a laboratory
复制标题
实验室饲养的两种小龙 Repomucenus richardsonii 和 R. valencienei 的幼虫和幼体发育
DOI：
10.11369/jji1950.41.149
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Yuka Uno
中科院分区：
文献类型：
--
作者：
H. Eda;T. Takita;Yuka Uno
从圈养产卵器中获得理查森和瓦伦西尼圆尾轮虫的卵，并将仔鱼培育到幼鱼阶段。初孵仔鱼全长分别为1.17±0.04 mm和1.11±0.03 mm。每个物种都有8-9+11-12个肌球和一个大的椭圆形卵黄囊。两种鱼的发育变化相似：卵黄在孵化后5-6天在约2.2 mm TL时完成吸收，所有鳍射线在约5.5 mm TL时完全发育，向底层生活方式的转变在约10-11 mm TL时完成。通过脊索腹缘、鳃骨膜和腹鳍皱褶上的黑素载体可以区分两种幼虫的后幼虫阶段。幼虫期可通过鳃骨膜上、腹鳍上、侧线上方和眶下管图案上的黑素载体来区分。
Repomucenus richardsonii and R. valenciennei eggs were obtained from captive spawners, and the larvae were raised to the juvenile stage. Total lengths (TL) of newly-hatched prolarvae were 1.17±0.04 mm and 1.11±0.03 mm, respectively. Each species had 8-9+ 11-12 myomeres and a large oval yolk sac. Developmental changes in the two species were similar: absorption of the yolk was completed at 5-6 days after hatching at ca. 2.2 mm TL, all fin rays were fully developed at ca. 5.5 mm TL, and the transition to a demersal life style was completed at ca. 10-11mm TL. The postlarval stage of the two species can be distinguished by the melanophores on the ventral edge of the notochord, on the branchiostegal membrane, and on the ventral finfold. The juvenile stages can be distinguished by the melanophores on the branchiostegal membrane, on the pelvic fins, and just above the lateral line and the infraorbital canal pattern.