... Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038 RGPIN-2017-06901 RGPIN-2017-147489 Weakly electric fish Electrolocation Path integration Foraging Navigation Summary: The trajectories of electric fish change as they learn to find food...

...Te K. Jones; Kathryne M. Allen; Cynthia F. Moss ABSTRACT Animals that rely on electrolocation and echolocation for navigation and prey detection benefit from sensory systems that can operate in the dark, allowing them to exploit sensory niches with few competitors. Active sensing has been...

... of diversity in the electric organ discharge (EOD) – which is the carrier of both the communication and electrolocation signal of electric fishes – via descriptions of the intrinsic properties of electrocytes, electrocyte innervation, electric organ anatomy and the neural coordination of the discharge (among...

... for electrolocation. It has been argued that sensor readings from electroreceptors along the rostrocaudal line allow fish to determine the location of a target object. It is well known that the ratio between the maximal slope and the maximal amplitude of the electric image can allow the discrimination of object...

... (e-mail: jlewis@uottawa.ca ) 22 6 2006 © The Company of Biologists Limited 2006 2006 electric image electrolocation finite-element-model Apteronotus leptorhynchus In order to extract relevant features from the environment in which they live, animals use both active...

... ). Electrolocation I. How the electroreceptors of Apteronotus albifrons code for moving objects and other electrical stimuli. J. Comp. Physiol. 144 , 465 -479. Bastian, J. ( 1981b ). Electrolocation II. The effects of moving objects and other electrical stimuli on the activities of two categories...

... via electrolocation to locate an aperture, whether they detect changes in landmark size and respond appropriately, whether landmarks or hydrostatic pressure are the primary cues for navigation and whether fish of different developmental stages behave differently with respect to landmarks...

...Stefan Schuster; Natalie Otto SUMMARY Weakly electric fish communicate and electrolocate objects in the dark by discharging their electric organs (EOs) and monitoring the spatiotemporal pattern of current flow through their skin. In the South-American pulse-type gymnotid fish these organs often...

...Stefan Schuster ABSTRACT Weakly electric fish of the pulse type electrolocate objects in the dark by emitting discrete electric organ discharges (EODs) separated by intervals of silence. Two neighbouring pulse-type fish often reduce the risk of discharging simultaneously by means of an ‘echo...

... and 600 μS cm −1 ) that are probably outside the natural range. Changes in water conductivity can influence high-frequency (active) electrolocation performance in three ways: effects on the fish’s EOD strength, effects on tuberous receptor sensitivity, and effects on the ‘electrical contrast...

...Christopher Assad; Brian Rasnow; Philip K. Stoddard ABSTRACT Weakly electric fish use active electrolocation – the generation and detection of electric currents – to explore their surroundings. Although electrosensory systems include some of the most extensively understood circuits...

... (R01MH49242). References Bastian , J. ( 1981 ). Electrolocation. I. How the electroreceptors of Apteronotus albifrons code for moving objects and other electrical stimuli . J. Comp. Physiol . 144 , 465 – 479 . 10.1007/BF01326832 Bastian , J. ( 1986 ). Electrolocation...

...), and central components of the electrosensory system analyze the information provided by the electroreceptor afferents. The electrosensory system is used for electrolocation, for the detection and analysis of objects near the fish which distort the EOD and for electrocommunication. Since the electric organ...

... randomly placed chironomid larvae was measured. The influence of various senses on search time was investigated by blocking the use of one or more senses. Active electrolocation was used by most fish for prey detection in the dark. In addition, passive electrolocation played a role in some individuals...