Results 31 to 40 of about 291,725 (293)

First record of Gymnotus henni (Albert, Crampton and Maldonado, 2003) in Panama: phylogenetic position and electric signal characterization [PDF]

open access: yesCheck List, 2013
We present the first record of the weakly electric fish Gymnotus henni in Panama, which also represents the first record of Gymnotus in the Pacific slope of the country. One specimen was collected in a tributary of the Chucunaque River in the Tuira basin.
Fernando Alda   +6 more
doaj   +3 more sources

A new and improved electric fish finder with resources for printed circuit board fabrication [PDF]

open access: yesNeotropical Ichthyology, 2019
We describe the circuit design, construction, and operation of a field-portable electric fish finder (an AC-coupled wide-band differential bio-amplifier with loudspeaker output).
Michael A. Haag   +3 more
doaj   +1 more source

Hippopotamyrus ansorgii species complex in the Upper Zambezi River System with a description of a new species, H. szaboi (Mormyridae) [PDF]

open access: yes, 2004
Specimens referable to Hippopotamyrus ansorgii sampled from the Upper Zambezi River System within Caprivi (Namibia) represent a complex of three species, two of which coexist in the Upper Zambezi River, and a third that inhabits a nearby river, the ...
Kramer, Bernd   +2 more
core   +1 more source

Global feather orientations changed by electric current

open access: yesiScience, 2021
Summary: During chicken skin development, each feather bud exhibits its own polarity, but a population of buds organizes with a collective global orientation.
Ting-Xin Jiang   +9 more
doaj   +1 more source

The agrin gene codes for a family of basal lamina proteins that differ in function and distribution [PDF]

open access: yes, 1992
We isolated two cDNAs that encode isoforms of agrin, the basal lamina protein that mediates the motor neuron-induced aggregation of acetylcholine receptors on muscle fibers at the neuromuscular junction.
Escher, G.   +6 more
core   +2 more sources

Elucidation of Rapid Synchronization on Electric Discharge by Use of Model Cell Systems Mimicking Electric Organs of Electric Eel

open access: yesElectrochemistry
The electric organ of a typical electric fish was artificially constructed by use of a model-cell system combining liquid-membrane cells mimicking the function of K+ and voltage-gated Na+ channels.
Yusuke YAMADA   +2 more
doaj   +1 more source

Long-range and high-precision localization method for underwater bionic positioning system based on joint active–passive electrolocation

open access: yesScientific Reports, 2023
Active electrolocation organ of weakly electric fish act as a proximity detection system with high accuracy in recognizing object parameters such as size and shape. In contrast, some fish with passive electrolocation organ are able to detect objects at a
Meijiang Hou   +3 more
doaj   +1 more source

Experimental evidence on promotion of electric and improved biomass cookstoves. [PDF]

open access: yes, 2019
Improved cookstoves (ICS) can deliver "triple wins" by improving household health, local environments, and global climate. Yet their potential is in doubt because of low and slow diffusion, likely because of constraints imposed by differences in culture,
Bhojvaid, V   +14 more
core   +1 more source

Magic trait Electric Organ Discharge (EOD) Dual function of electric signals promotes speciation in African weakly electric fish

open access: yesCommunicative & Integrative Biology, 2009
A unique evolutionary specialization of African weakly electric fish (Mormyridae) is their ability to produce and perceive electric signals. Mormyrids use their Electric Organs Discharge (EOD) for electrolocation and electrocommunication. Here we discuss
Philine G.D. Feulner   +4 more
doaj   +1 more source

Spatial and temporal distribution of Gymnorhamphichthys rondoni (Gymnotiformes: Rhamphichthyidae) in a long-term study of an Amazonian terra firme stream, Leticia - Colombia [PDF]

open access: yesNeotropical Ichthyology, 2019
Weakly electric fishes continually emit electric organ discharges (EOD) as a means of communication and localization of objects in their surroundings.
Carolina Escamilla-Pinilla   +2 more
doaj   +1 more source

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