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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Miscellaneous features of electroreceptors in Gnathonemus petersii (Gunther, 1862) (Pisces, Teleostei, Mormyriformes)

RC Peters and JP Denizot (2004)

Miscellaneous features of electroreceptors in Gnathonemus petersii (Gunther, 1862) (Pisces, Teleostei, Mormyriformes)

BELGIAN JOURNAL OF ZOOLOGY, 134(S1):61-66.

The cutaneous electrical activity of ampullary and tuberous electroreceptor organs of Gnathonemus petersii (Teleostei, Mormyriformes) was studied in seven specimens. The spontaneous activity levels of 38 ampullary primary afferents showed significant differences between individual fishes rather than between different loci within a single specimen. Spontaneous activity of ampullary electroreceptor organs is not constant, but depends on some unknown factor, e.g. occlusion of the ampullary opening or local accumulation of ions. Both under Saffan and Hypnodil anesthesia it proved possible to record ampullary primary afferent activity from anesthetized specimens. Ampullary organ activity is modulated by Electric Organ Discharges and by respiratory potentials. Respiratory potentials also modulate the cutaneous electrical activity of mormyromasts. The ion composition of the water influences the cutaneous electrical oscillations of the Knollen organs.

ampullary electroreceptor organ; conductivity; electroreception; Gnathonemus petersii; Knollenorgan; mormyromast; tuberous organ
9th Benelux Congress of Zoology, Antwerp, BELGIUM, NOV 08-09, 2002
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
1903-1923
​Annales de la Société royale malacologique et zoologique de Belgique
 
1923-1989
Annales de la Société Royale Zoologique de Belgique
 
1989-
Belgian Journal of Zoology