Scheffel, Andreas and Kramer, Bernd (1997) Electrocommunication and social behaviour in Marcusenius senegalensis (Mormyridae, Teleostei). ETHOLOGY, 103 (5). pp. 404-420. ISSN 0179-1613, 1439-0310
Full text not available from this repository.Abstract
The electric organ discharges (EODs) Marcusenius senegalensis, a West African freshwater fish, are bipolar pulses of short duration (220 +/- SE 13 mu s). In males (n = 10; 10.1-13.1 cm standard length-which is around the size of getting mature), the duration of EOD pulses was of significantly greater variance than in females (n = 9; 9.8-12.8 cm standard length). Male EODs also showed a tendency for a longer duration than female EODs. Groups of three as well as of 14 M. senegalensis formed temporary schools in a 'naturally' equipped 720-1 tank. While swimming slowly in a loose school during their nocturnal active phase, fish discharged in irregular long-short-long inter-EOD interval patterns. Near neighbours displayed a tendency to discharge in intervals of similar duration (nearest neighbour distance <1/2 fish length). On removal of a plastic partition that had separated a pair of fish for at least 3 days, mutual threat displays followed by fighting were observed. During threatening, the fish alternated regularly between bursts of a high discharge rate and shea discharge breaks; the rate of change was 4/s. The subdominant animal in a group of two was attacked frequently and often ceased discharging when the dominant fish approached. Courtship behaviour involving gonadally mature fish was accompanied by high-discharge-rate displays with intervals of constant duration in both fish, and the reciprocal display of 'preferred' EOD latencies in the 12 ms range. The results demonstrate electric communication by distinct inter-discharge interval patterns in the social behaviour of this mormyrid fish.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | WEAKLY-ELECTRIC FISH; GNATHONEMUS-PETERSII; POLLIMYRUS-ISIDORI; WATER CONDUCTIVITY; DISCHARGE; COMMUNICATION; VARIABILITY; FREQUENCY; INTERVALS; SIGNALS |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie > Alumni or Retired > Verhaltensbiologie und Verhaltensphysiologie (Prof. Dr. Bernd Kramer) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 May 2023 06:53 |
| Last Modified: | 09 May 2023 06:53 |
| URI: | https://pred.uni-regensburg.de/id/eprint/50842 |
Actions (login required)
 |
View Item |
