Reconstruction of Electric Discharge Patterns and Electrogenesis Mechanism in African Sharptooth Catfish Clarias gariepinus (Clariidae, Siluriformes)

Орлов, А. А.; Olshanskiy, V. M.; Барон, В. Д.

doi:10.1134/s0012496621050082

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…This increase in current leakage may have made those individuals easier to detect by electroreceptive conspecifics in dark or muddy water, therefore potentially leading to increased reproductive success. Findings from Clarias gariepinus catfish, which generate rudimentary electric fields during social encounters (Baron et al, 1994;Orlov et al, 2021), are consistent with this hypothesis.…”

Section: Weakly Electric Fishes and The Adaptive Shift Hypothesissupporting

confidence: 56%

“…Although these fishes use electric fields to detect nearby objects, evidence from catfish are nevertheless consistent with the hypothesis that the generation of weak electric fields evolved in the context of social signaling (Baron et al, 1994;Orlov et al, 2021). Weakly electric fishes detect the electric fields of nearby conspecifics (Heiligenberg, 1991) and the active electric sense is an important channel for social communication between conspecifics (Henninger, 2015;Caputi, 2017;Crampton, 2019).…”

Section: Weakly Electric Fishes and The Adaptive Shift Hypothesissupporting

confidence: 52%

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Adaptive shift of active electroreception in weakly electric fish for troglobitic life

Soares,

Gallman,

Bichuette

et al. 2023

Front. Ecol. Evol.

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The adaptive-shift hypothesis for the evolution of cave-dwelling species posits that ancestor species in surface habitats had exaptations for subterranean life that were exploited when individuals invaded caves. Weakly electric Gymnotiform fishes, nocturnal South American teleost fishes, have features that appear to be likely exaptations for troglobitic life. These fishes have active electrosensory systems in which fish generate weak electric fields that are detected by specialized electroreceptors. Gymnotiform fishes use their electric fields for navigation, prey capture (scene analysis), and social communication. Although active electrosensory systems appear to be exaptations for troglobitic life, as fish use these systems to “see in the dark”, producing electric fields is energetically costly. Cave habitats, which often are low in resources, may not be able to support such high energetic demands. Eigenmannia vicentespelaea, a species of weakly electric fish that is endemic to the São Vicente II cave in central Brazil, surprisingly generates stronger electric fields than their surface relatives. The increase in strength of electric fields may result simply from differences in size between cave and surface populations, but may also be due to lack of predation pressure in the cave or increases in “sensory volumes” and acuity that improve prey localization and capture. Eigenmannia vicentespelaea exhibits the classical phenotypes of any troglobitic fish: these fish have small to nonexistent eyes and loss of pigmentation. The closest living surface relative, Eigenmannia trilineata, inhabits streams nearby and has eyes and pigmentation. The electrosensory and locomotor behavior of both species of fish were measured in their natural habitats using a grid recording system. Surface Eigenmannia exhibited dramatic circadian changes in social behavior, such as hiding under rocks during the day and foraging in groups at night, while cave Eigenmannia displayed territorial behavior with no apparent circadian modulations. The territorial behavior involved electrical and movement-based interactions that may be a form of boundary patrolling. Electrosocial behavior and scene analysis are mechanistically interlinked because both stem from active sensing tactics.

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Section: Weakly Electric Fishes and The Adaptive Shift Hypothesissupporting

confidence: 56%

Section: Weakly Electric Fishes and The Adaptive Shift Hypothesissupporting

confidence: 52%

Adaptive shift of active electroreception in weakly electric fish for troglobitic life

Soares,

Gallman,

Bichuette

et al. 2023

Front. Ecol. Evol.

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Adaptations to Subterranean Environments

Lunghi,

Niemiller,

Bilandzija

2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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Visualization of electric fields and associated behavior in fish and other aquatic animals

et al. 2023

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Reconstruction of Electric Discharge Patterns and Electrogenesis Mechanism in African Sharptooth Catfish Clarias gariepinus (Clariidae, Siluriformes)

Cited by 3 publications

References 13 publications

Adaptive shift of active electroreception in weakly electric fish for troglobitic life

Adaptive shift of active electroreception in weakly electric fish for troglobitic life

Adaptations to Subterranean Environments

Visualization of electric fields and associated behavior in fish and other aquatic animals

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