摘要
于1991年4月，从长江口采集葛氏长臂虾标本，在实验室进行幼体发育研究。结果表明，幼体自孵出后，在水温24℃、盐度12、饵料充足的条件下，有规律的每2天蜕皮1次，共经11次蜕皮，约22d完成变态，入仔虾期。
This present paper describes the larval development of Palaemon gravierl, which lives in the shallow sea and estuaries and is of commercial importance in China.Under 22℃ of temperature and salinity of 12 it takes about 22 days for larvae to metamorphose to postlarval stage. Larval development may be divided into 11 zoal stages.1st stage: The carapace has pterygostomian spines. The eyestalk is fused with carapace. Abdomen comprised of 6 segments, 1st and 2nd pereiopods are biramous rudiments.2nd stage: Rostrum has supra-orbital spines, eye stalks movable, dorsal projection of the 3rd abdomenal segment bears a hook, 5th abdomenal segment has a large spine on each side. The 3rd pereiopod is biramous rudiment, 5th pereiopod is monotype. 3rd stage: Rostrum has two dorsal teeth, carapace has branchiostegal spines, 6th abdomenal segment is separated with telson, uropod is biramous. 4th stage:Rostrum has 3 dorsal teeth, 3rd and 5th pereiopods are segmented. 5th stage: The 4th pereiopods are segmented. 6th stage: The bud of the pleopod may be seen. 7th stage: The pereiopod of the 1st and 2nd are distinctly chelae, pleopods are biramous. 8th stage: The pleopods are segmented. 9th stage: The 2nd to 5th pleopods bear appendix interna. 10th stage: A hook on the 3rd abdomenal segment disappears. The telson bears 2 pairs of dorsal spines and 2 pairs of posterior spines. 11th stage: Theinner flagellum of the antennula has 7-9 segments. The postlarval stage: 9-10 teeth on the dorsal border of the rostrum, 1-2 teeth on the ventral border. The carapace has antennal and branchiostegal spines, pterygostomian spine disappears.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1994年第1期100-112,共13页
Oceanologia Et Limnologia Sinica
关键词
葛氏长臂虾
蚤状幼体
仔虾
蜕皮
Palaemon gravieri Zoea Postlarvae Moult Metamorphosis
