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漣蟲目
鎖定
漣蟲目是軟甲綱下的一個目,該目體延長,略呈蝦形。頭胸部較粗大,腹部纖細,略呈鏈狀。頭部與胸部前3節或4節癒合,背面由不太大的頭胸甲所包被,胸部有5或4個自由體節,短而寬。腹部6或7節,體節間的關節能向背腹兩面屈曲。頭胸甲與頭胸部腹甲及附肢基部完全癒合,形成封閉的鰓室;複眼無柄。全世界共有8科,102屬,約800種。中國海已知數十種。漣蟲類全為海產,底棲,潛沙生活,少數浮游生活,自潮間帶、淺海至大洋超深淵底都有分佈。平時潛居底內,繁殖期常游泳於水層中交配。
- 中文學名
- 漣蟲目
- 界
- 動物界
- 門
- 節肢動物門
- 綱
- 軟甲綱
漣蟲目形態特徵
囊蝦總目的1目。體延長,略呈蝦形。頭胸部較粗大,腹部纖細,略呈鏈狀。頭部與胸部前3節或4節癒合,背面由不太大的頭胸甲所包被,胸部有5或4個自由體節,腹部6或7節,尾節有時全無。頭胸甲兩側緊包頭胸部,其前緣、兩側緣與頭部腹面前緣,胸部腹甲兩側緣及附肢基部完全癒合,形成封閉的鰓室;前側緣向前突出,形成假額角,向前常超出額緣前端。複眼無柄,互相結合,位於背面前端中線上。全部為海生種,棲所自潮間帶至大洋深淵底。深洋近年來發現大量新種。全世界共有 8科,102屬,約800種。中國海已知數十種。
漣蟲類自由胸節短而寬,腹部體節間的關節能向背腹兩面屈曲,似蠍形。尾節如有,則末部常較窄而有小側刺,許多種屬尾節完全消失。第1觸角柄短小,柄部3節,鞭僅幾小節,單枝或雙枝。第2觸角強大,柄部粗單枝,無鱗片,觸鞭在雄性較細長,有時超過體長;雌者短小,僅4、5節。有的如麗漣蟲(Lampropus屬),雄性第2觸角特化為執握器,交配時用以抱住雌性。
大顎切齒突與臼齒突間有一帶小齒的活動片,但無觸鬚。第1、2小顎構造較簡單。第 1顎足發達,寬而大,上肢堅硬擴大,向外側後方伸出,上附多片鰓葉,伸至鰓室,為呼吸器官,適應潛居泥沙底內的生活方式。第2、3顎足常具外肢,雌性第3顎足和第1、2步足基部有擴大的復卵板,形成育卵囊。腹肢構造簡單而小,雙枝,原肢2節,內肢2節,外肢1節;雌性者完全失去附肢(游泳肢)。尾肢窄長,雙枝型,原肢為細長的柄,內肢1~3節,外肢1節,無游泳功能。
漣蟲目生活環境
漣蟲(4張)
交配後產卵
漣蟲目例句翻譯
1.the animal order including amoebas.
2.Of or belonging to the order Gregarinida.
3.NEW RECORDS OF CHINESE MAMMALS OF INSECTIVORA
4.A Guide to the Measurement of Mammal Skull Ⅴ: Insectivora and Chiroptera
5.A PRELIMINARY SURVEY OF RODENTIA AND INSECTIVORA IN THE WUYISHAN NATURAL RESERVE,FUJIAN
6.Among tham, 7 species is belonged to Rodenria,and Carnivora,Chiroptera and Insectivora only have 1 species respectively.
7.a family of protoctista in the order Coccidia.
8.Any of various small, soft-bodied, sometimes winged insects of the order Psocoptera, which includes the booklice.
9.W Results 2 745 small mammals were captured from the investigated sites and identified as 10 families, 25 genera and 41 species in 5 orders (Rodentia, Insectivora, Scandentia, Logomorpha and Carnivora).
10.Results:The research of in the period of from the fifties of 20 th century up to now were found altogether 4 famlilies 9 genera 13 species in Rodentia, 2 species in Lagomorpha, 3 species in Carnivora and one species in Insectivora.