厦门大学：《海洋浮游生物学》课程教学资源（课件讲稿）第07章 浮游甲壳动物 Planktonic Crustacea 第5节 糠虾类

Chapter 7 Planktonic Crustacea Part V Mysidacea

Chapter 7 Planktonic Crustacea Part V Mysidacea

References ƒ 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

References ƒ 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

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 1.1 Partition and metamerism ƒ cephalothorax ƒ abdomen

1 External features 1.1 Partition and metamerism ƒ cephalothorax ƒ abdomen

1.2 Appendages ƒ （ 1 ） A 1 ƒ （ 2 ） A 2 ƒ （ 3 ）M, M 1, M 2 ƒ （ 4 ） P1-8 (P 1 →Mp, P 2 →Gp ） ƒ （ 5 ）Pl1-5，sexusal dimorphism ƒ （ 6 ）Up

1.2 Appendages ƒ （ 1 ） A 1 ƒ （ 2 ） A 2 ƒ （ 3 ）M, M 1, M 2 ƒ （ 4 ） P1-8 (P 1 →Mp, P 2 →Gp ） ƒ （ 5 ）Pl1-5，sexusal dimorphism ƒ （ 6 ）Up

抱卵板 Hansenomysis fyllae ♀ P2 and P8

抱卵板 Hansenomysis fyllae ♀ P2 and P8

2 Classification >700 species, 2 suborders, 4 families, 43 genera ƒ 1 shape of the carapace ƒ 2 with or without gills ƒ 3 ♀the number of oostegites ƒ 4 the degree development of Pl ƒ 5 with or without statocyst

2 Classification >700 species, 2 suborders, 4 families, 43 genera ƒ 1 shape of the carapace ƒ 2 with or without gills ƒ 3 ♀the number of oostegites ƒ 4 the degree development of Pl ƒ 5 with or without statocyst

Comparison of two suborder in Mysidacea statocyst absent usually present ♀rudimentary，♂one or more pairs modified as accessory copulatory organs ♀♂well developed ♂not modified Pl oostegites ♀7 pairs ♀2-3 pairs P absent branchiae 2-7 present Suborder Mysida Suborder Lophogastrida

Comparison of two suborder in Mysidacea statocyst absent usually present ♀rudimentary，♂one or more pairs modified as accessory copulatory organs ♀♂well developed ♂not modified Pl oostegites ♀7 pairs ♀2-3 pairs P absent branchiae 2-7 present Suborder Mysida Suborder Lophogastrida

2.1 Suborder Lophogastrida 疣背糠虾亚目 2.2 Suborder Mysida 糠虾亚目 2.2.1 Mysidae 糠虾科 ƒ Subfamily Siriellinae 节糠虾亚科 ƒ Siriella sinensis 中华节糠虾

2.1 Suborder Lophogastrida 疣背糠虾亚目 2.2 Suborder Mysida 糠虾亚目 2.2.1 Mysidae 糠虾科 ƒ Subfamily Siriellinae 节糠虾亚科 ƒ Siriella sinensis 中华节糠虾

Subfamily Gastrosaccinae 囊糠虾亚科 ƒ Iiella pelagicus 漂浮小井伊糠虾 Pl 3 Re Incision on telson

Subfamily Gastrosaccinae 囊糠虾亚科 ƒ Iiella pelagicus 漂浮小井伊糠虾 Pl 3 Re Incision on telson