Electric fish approach stationary signal sources by following electric current lines
نویسندگان
چکیده
منابع مشابه
Electric Signals & Electric Fish
Philip K. Stoddard Department of Biological Sciences Florida International University Miami, Florida, 33199, USA Synopsis Electric sense (i.e. the ability to detect low-voltage electrical impulses from other individuals) is found in most primitive fish orders, a few derived teleost fish, some aquatic amphibians, the platypus and the echidna. Electric signals (i.e. self-generated electrical sign...
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Many species of electric fish emit sexually dimorphic electrical signals that are used in gender recognition. In Sternopygus, mature females produce an electric organ discharge (EOD) that is higher in frequency and shorter in pulse duration than that of mature males. EOD pulse duration is determined by ion currents in the electrocytes, and androgens influence EOD pulse duration by altering the ...
متن کاملElectric fish
Figure 1. Types and distribution of electric fish. Species of electric fish can be found in freshwater rivers of Africa and South America, as well as marine environments. Marine species are depicted in blue, freshwater species in yellow. Strongly electric fish use electricity to stun their prey, while weakly electric fish use electricity for sensing and communication. The waveform above each fi...
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2439 What could an African lion stalking a distant impala in the African savanna possibly have in common with an electric fish searching for nearby water fleas in the Amazon River? Both the lion and the rather less daunting 14cm black ghost knifefish (Apteronotus albifrons) use sensory information to help them to locate and catch prey. But lions, which rely on their acute vision during the hunt...
متن کاملModeling the electric field of weakly electric fish.
Weakly electric fish characterize the environment in which they live by sensing distortions in their self-generated electric field. These distortions result in electric images forming across their skin. In order to better understand electric field generation and image formation in one particular species of electric fish, Apteronotus leptorhynchus, we have developed three different numerical mod...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1987
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.130.1.359