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普通齿蛉幼虫的游泳行为(英文)
引用本文:曹成全,刘志伟,陈申芝,童超.普通齿蛉幼虫的游泳行为(英文)[J].昆虫学报,2012,55(1):133-138.
作者姓名:曹成全  刘志伟  陈申芝  童超
作者单位:乐山师范学院化学与生命科学学院, 四川乐山 614000
基金项目:四川省教育厅重点研究项目,四川省科技厅自筹项目
摘    要:为了探究广翅目昆虫幼虫在水中的游泳能力, 以丰富其水生习性的行为学资料, 选取中国特有种普通齿蛉Neoneuromus ignobilis幼虫为研究对象, 通过室内试验对其游泳的姿势、 刺激因素、 不同龄期游泳能力及在外界刺激下的游泳行为进行了观察和测定。结果表明: 普通齿蛉幼虫有垂直、 平行、 仰面和侧面等4种游泳姿势, 出现的频率分别为89.08%, 5.49%, 4.40%和0.61%。游泳时身体呈不同程度的“S”形, 利用头部和尾部方向的改变实现虫体的上升、 下沉和游泳姿势的改变。普通齿蛉幼虫利用身体的摆动游泳, 游泳时3对足以固定的姿势靠紧身体。不同龄期的幼虫游泳能力差异很大, 6龄幼虫的游泳能力远强于2龄和末龄幼虫。在游泳时, 普通齿蛉幼虫还具有比较复杂和独特的防御行为, 如其腹部末端会喷射出化学物质。据此认为, 普通齿蛉拥有较强的游泳能力, 有助于其逃生和防御。

关 键 词:广翅目    普通齿蛉    水生昆虫    幼虫    游泳行为    游泳姿势  

Swimming behavior of the aquatic larva of Neoneuromus ignobilis ( Megaloptera: Corydalidae: Corydalinae)
CAO Cheng-Quan , LIU Zhi-Wei , CHEN Shen-Zhi , TONG Chao.Swimming behavior of the aquatic larva of Neoneuromus ignobilis ( Megaloptera: Corydalidae: Corydalinae)[J].Acta Entomologica Sinica,2012,55(1):133-138.
Authors:CAO Cheng-Quan  LIU Zhi-Wei  CHEN Shen-Zhi  TONG Chao
Institution:College of Chemistry and Life Sciences, Leshan Teachers University, Leshan, Sichuan 614000, China
Abstract:In order to explore the pattern and significance of swimming,through photos and videos we observed and recorded the swimming behavior of the aquatic larvae of Megaloptera in detail for the first time using the endemic Chinese species Neoneuromus ignobilis Navás,1932 as the test insect,which were collected from the Dadu River and reared in nature-simulated environments.Four swimming postures are recognized and described herein in detail,i.e.,vertical,parallel,back and side swimming,and these postures were used by the larvae disproportionately,with a frequency of 89.08%,5.49%,4.40% and 0.61%,respectively.The swimming larvae tend to pose their body into an S-shape,with various degree of sinuation.By changing the directions of the head and tail,they can easily rise up or sink and change swimming postures.The propulsion was generated by the wriggling of the body while the legs were mostly held close to the body.Larvae of different instars varied greatly in swimming ability,the 6th instar larvae being the best and most active swimmer compared to the 2nd and final instars.The larvae may also employ complex defense behaviors not often known from relatively ancient insect groups,like chemical defense as secretion from the end of abdomen.
Keywords:Megaloptera  Neoneuromus ignobilis  aquatic insect  larva  swimming behavior  swimming posture
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