eigenmannia การใช้

• For the genus Eigenmannia, frequencies range from 240 to 600 Hz.
• The behavior has been most intensively studied in the South American species " Eigenmannia virescens ".
• Neuroethologists performed several experiments under " Eigenmannia " s natural conditions to study how it determined the sign of the frequency difference.
• Neuroethologists performed several experiments under " Eigenmannia's " natural conditions to study how it determined the sign of the frequency difference.
• ""'Eigenmannia goajira " "'is a species of glass knifefish found in the Lake Maracaibo basin in Colombia and Venezuela.
• "Eigenmannia vicentespelaea " is the only cave-dwelling gymnotiform . " Humboldtichthys kirschbaumi " ( formerly genus " Ellisella " ) from Upper Miocene of Bolivia is the only fossil gymnotiform.
• In the gymnotiform fish, " Eigenmannia " illustrated here, the primary sensory neurons in the electroreceptor system are simple feature detectors, and they include the ampullary receptors, probability coders ( P units ), and phase coders ( T units ).
• A few species are familiar to the aquarium trade, such as the black ghost knifefish ( " Apteronotus albifrons " ), the glass knifefish ( " Eigenmannia virescens " ), and the banded knifefish ( " Gymnotus carapo " ).
• "' Walter F . Heiligenberg "'( January 31, 1938 & ndash; September 8, 1994 ) is best known for his contribution to neuroethology through his work on one of the best neurologically understood behavioral patterns in vertebrate, Eigenmannia ( Zupanc and Bullock 2006 ).
• If a neighboring electric field is discharging sinusoidally close to the fish's EOD frequency, then it will cause sensory confusion in the fish, jamming it and preventing it from electrolocating effectively . " Eigenmannia " typically are within the electric field range of three to five conspecifics at any time.
• In some species the waveform is continuous and almost sinusoidal ( for example the genera " Apteronotus ", " Eigenmannia " and " Gymnarchus " ) and these are said to have a wave-type EOD . In other species, the EOD waveform consists of brief pulses separated by longer gaps ( for example " Gnathonemus ", " Gymnotus ", " Leucoraja " ) and these are said to have a pulse-type EOD.