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electric organ discharge
Also known as: EOD, electric organ discharges, electric-organ discharge
Facts (11)
Sources
Comparable Ages for the Independent Origins of Electrogenesis in ... journals.plos.org 3 facts
referenceArnegard ME and Carlson BA (2005) observed and documented electric organ discharge patterns in a mormyrid fish during group hunting.
claimModern extant species of electric fish have convergently evolved cerebellum-like neural circuitry in the hindbrain that is capable of learning to cancel the amplitude modulations of electric organ discharge caused by tail movements.
claimHopkins suggested that extending the length of the tail in electric fish, where the electric organ is located, increases the voltage of the electric organ discharge and the active space of electric signaling, which is particularly important in water with reduced conductivity.
Electroreception and electrogenesis - Wikipedia en.wikipedia.org 2 facts
claimElectric catfish use electric discharges to ward off other species from their shelter sites, but they rarely use electric organ discharges during intraspecific conflicts, preferring ritualized fights with open-mouth displays and bites.
claimElectric organs in Gymnotiformes consist of a stack of electrocytes, each capable of generating a small voltage, which are added together in series to produce a powerful electric organ discharge.
Editorial: Recent Advances in Electroreception and Electrogeneration frontiersin.org 2 facts
claimElectric fish mitigate jamming signals by altering their electric organ discharge (EOD) characteristics to shift the frequency content of the jamming signal away from other electrosensory stimuli they need to detect, as established by Heiligenberg (1991).
referenceH. Zakon, J. Oestreich, S. Tallarovic, and F. Triefenbach documented EOD (Electric Organ Discharge) modulations in brown ghost electric fish, including JARs, chirps, rises, and dips, in a 2002 Journal of Physiology Paris article.
Electroreception, electrogenesis and electric signal evolution - ADS ui.adsabs.harvard.edu 2 facts
claimTuberous electroreceptors in Mormyroidea and Gymnotiformes facilitate electrocommunication by detecting the electric-organ discharges (EODs) of neighboring fishes.
measurementSome groups of elasmobranchs and teleosts generate weak electric-organ discharges (EODs) of less than 10 volts or strong EODs of greater than 50 volts to facilitate communication or predation, though these groups do not perform electrolocation.
[PDF] Electroreception science.umd.edu 1 fact
claimElectric organs in animals produce electric organ discharges.
Electroreception, electrogenesis and electric signal evolution pubmed.ncbi.nlm.nih.gov 1 fact
claimActive electroreception, or electrolocation, occurs only in the teleost lineages Mormyroidea and Gymnotiformes, where the animal generates a weak electric-organ discharge (EOD) of less than 1 volt and detects distortions in the resulting field using high-frequency-tuned tuberous electroreceptors.