| 摘要: |
| 为了探究三叶虫萤幼虫的行为学特征，促进三叶虫萤的资源利用与人工养殖，本文采用控制变量法以三叶虫萤末龄幼虫为研究对象分析了幼虫在不同时间和空间密度的叠背现象，采取LY-WN超清显微系统拍照分析了三叶虫萤幼虫的背腹部结构与足部结构。结果表明，三叶虫萤各龄幼虫均表现出独特的叠背行为，且按照叠背的重合度区分，可分为相对叠背和集群叠背。叠背率随种群密度增加而增加，叠背率与种群密度的相关系数为0.8358。三叶虫萤幼虫的足含有较多的刚毛，且跗节延伸有倒勾；背部较宽，且具有起伏和分节结构；腹部含有大量小而细的刚毛和起伏结构。因此，三叶虫萤幼虫的叠背行为可能与足部结构、背腹部结构、接触时间、种群密度具有较大关系，且幼虫的叠背行为可能对其栖息、防卫、取食、迁移等行为活动具有重大意义。 |
| 关键词: 三叶虫萤 幼虫 叠背 行为学 |
| DOI：10.14188/j.ajsh.2019.06.009 |
| 分类号:Q968.1 |
| 基金项目:四川省教育厅一般项目（17ZB0195）；四川省大学生创新创业训练项目（201810649107） |
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| The stack back behavior of the larval Emeia pseudosauteri |
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CHEN Zhengwei1,CAO Chengquan1,MEI Zhaoli1,XU Danyang1,TONG Chao1
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College of Life Science, Leshan Normal University, Leshan 614004, Sichuan, China
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| Abstract: |
| In order to investigate behavioral characteristics of the larval Emeia pseudosauteri，and accelerate its utilization and artificial breeding, we took the last instar larva of Emeia pseudosauteri as an example and studied the stack back phenomenon at different times and space densities, analyzed the back, abdomen and foot structure by LY-WN ultra-clear microscope system photo analysis method. The results showed that the larval Emeia pseudosauteri manifested unique stack back behavior. According to the overlap degree of the stack back, it can be divided into a relative stack back and a cluster stack back. Stack back rate increases as population density increases. The correlation coefficient between stack back rate and population density is 0.835 8. The foot of the larval Emeia pseudosauteri contians many bristles and the tarsulus extends a barb; wide back with undulate and segmenting structures; the abdomen contains a large number of small, thin bristles and undulate structures. Therefore, the stack back behavior of the larval Emeia pseudosauteri may be related to foot structure, back and abdomen structure, contact time and population density. The stack back behavior of the larvae may be significant for its behavioral activities such as inhabitation, defense, predation, and migration. |
| Key words: Emeia pseudosauteri larva stack back behavioristics |
