摘要
三疣梭子蟹分布广,资源丰富,经济价值高,是我国重要的海洋水产资源之一。它的趋光行为表明其视觉特性在生活中占重要位置。目前,对无脊椎动物视觉研究多以昆虫和头足类为对象。虽然Wald等对马蹄蟹、蜘蛛蟹等的色觉方面有过研究,但未能得出一致结论。郑微云、罗会明于1979年所发表的论文,曾用行为方法对三疣梭子蟹色觉进行过研究,但不够深入。我们试图用电生理方法对三疣梭子蟹的视觉特性作较系统分析,为了解甲壳动物视觉特性提供资料。
The electroretinogram (ERG) of the compound eye of the portunid crab Portunus tritu-berculatus (Miers) collected from sea areas of Xiamen and Longhai in 1984. 12-1985.3. consists of a cornea negative potential during illumination followed by a positive off-rebound. The amplitud of ERG increases with increasing light intensity. During the course of dark-adaptation, the threshold decreased smoothly 5.4 log units and took 100 minutes to return to the original level. No plateau was seen at any stage. The spectral sensitivity curve has a maximum at 513 nm, no matter. It was tested under white or colour light adaptation, or scotopic condition. It is concluded that the portunid crab eye is a unireceptor system, and lacks the ability of colour discrimination.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1990年第5期490-494,共5页
Oceanologia Et Limnologia Sinica
基金
中国科学院科学基金
