文档介绍：Chapter 7 Planktonic Crustacea
Part V Mysidacea
References
刘瑞玉, 王绍武, 2000. 中国动物志节肢动物
门甲壳动物亚门糠虾目
Characteristic features
1 the cephalothorax is not entirely covered
by the carapace
2 P Re well developed, Pl rudimentary
3 with statocyst
4 direct development
1 External features
Partition and metamerism
cephalothorax
abdomen
Appendages
(1)A1
(2)A2
(3)M, M1, M2
(4)P1-8 (P1→Mp, P2→Gp)
(5)Pl1-5,sexusal dimorphism
(6)Up
抱卵板
Hansenomysis fyllae ♀ P2 and P8
2 Classification
>700 species, 2 suborders, 4 families, 43 genera
1 shape of the carapace
2 with or without gills
3 ♀the number of oostegites
4 the degree development of Pl
5 with or without statocyst
Comparison of two suborder in Mysidacea
Suborder Suborder
Lophogastrida Mysida
branchiae P2-7 present absent
oostegites ♀7 pairs ♀2-3 pairs
♀rudimentary,♂one
♀♂well developed or more pairs modified
Pl
♂not modified as accessory copulatory
organs
statocyst absent usually present
Suborder Lophogastrida 疣背糠虾亚目
Suborder Mysida 糠虾亚目
Mysidae 糠虾科
Subfamily Siriellinae 节糠虾亚科
Siriella sinensis 中华节糠虾
Subfamily inae 囊糠虾亚科
Iiella pelagicus 漂浮小井伊糠虾
Pl3 Re
Incision on telson