Temporal patterning of electric organ discharges in the African electric catfish,Malapterurus electricus(Gmelin)
作者:
C. H. Rankin,
P. Moller,
期刊:
Journal of Fish Biology
(WILEY Available online 1992)
卷期:
Volume 40,
issue 1
页码: 49-58
ISSN:0022-1112
年代: 1992
DOI:10.1111/j.1095-8649.1992.tb02553.x
出版商: Blackwell Publishing Ltd
关键词: electric fish;Malapterurus electricus;EODs
数据来源: WILEY
摘要:
This paper is the first detailed analysis of situation‐specific temporal patterning of electric organ discharges (EODs) in a strong electric fish. Using a resident‐intruder paradigm EODs were recorded during interactions between dyads composed ofMalapterurus electricus(Gmelin) and four different types of fish: (1) conspecifics; (2) large prey‐type mid‐water fish, goldfish (Carassius auratus, Linnaeus 1758) and tilapia (Oreochromis melanotheron, Rüppel, 1852); (3) a sympatric competitor,Polypterus palmas(Ayres 1850) and (4) a larger, threatening catfish,Clariassp.An analysis of the EODs emitted showed that in the presence of conspecifics the average EOD volley consisted of a single long‐duration, low frequency train of EODs. The presence of the midwater fish (goldfish and Tilapia) elicited volleys consisting of two short trains, andP. palmaselicited long duration volleys with two trains and long inter‐train intervals. Finally, an attackingClariasresulted on average in volleys consisting of two high‐frequency trains of EODs. With nonconspecific partner species resident electric catfish emitted volleys with more pulses, more trains that were longer in duration and higher in frequency than the EODs in volleys emitted by intruder electric catfish with the same species
点击下载:
PDF
(710KB)
返 回