Abstract

The patterns of electric discharges were studied in two species of upside-down catfishes, Synodontis clarias and S. membranaceus. In S. clarias, constant generation of weak electrical pulses with a relatively stable frequency (~30 s^–1) and an amplitude reaching 200 μV was found. In representatives of both species, both relatively short two-phase discharges of two types, differing in the total duration and ratio of positive and negative phases, and long-term impulses of various shapes with characteristic frontal irregularities were recorded at aggressive-defensive behavior in pairs of specimens. In S. membranaceus, short biphasic discharges of both the first and second types were recorded. Using a simple computer model, an attempt was made to reconstruct the process of the formation of long-term electric discharges from short elementary pulses.

中文翻译：

---

非洲颠倒的Cat鱼（滑齿科，Siluriformes）的放电：特殊性和发电机理

摘要

研究了两种倒置cat鱼的放电模式，即Synodontis clarias和S. membranaceus。在S. clarias中，发现不断产生弱电脉冲，其频率相对稳定（〜30 s ^–1），幅度达到200μV。在这两个物种的代表中，记录了两种类型的相对较短的两相放电，它们在正负相的总持续时间和比例上有所不同，并且长期记录了各种形状的，具有特征性正面不规则性的冲动。对标本。在S. membranaceus，记录了第一类型和第二类型的短双相放电。使用简单的计算机模型，尝试从短基本脉冲重建长期放电的形成过程。