A BIOLOGICAL FUNCTION FOR ELECTRORECEPTION IN SHARKS AND RAYS
نویسندگان
چکیده
منابع مشابه
A biological function for electroreception in sharks and rays.
The discovery of a new sensory modality in animals is of great significance in the history of biology – akin to the description of a new species of bird or primate or the unearthing of a missing link in the fossil record. In this issue we celebrate one of the key papers in the discovery of electroreception in fishes (Kalmijn, 1971), which established a biological function for the ampullae of Lo...
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The unique head morphology of sphyrnid sharks might have evolved to enhance electrosensory capabilities. The 'enhanced electroreception' hypothesis was tested by comparing the behavioral responses of similarly sized carcharhinid and sphyrnid sharks to prey-simulating electric stimuli. Juvenile scalloped hammerhead sharks Sphyrna lewini and sandbar sharks Carcharhinus plumbeus oriented to dipole...
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this study intends to investigate samuel beckett’s waiting for godot and endgame under the lacanian psychoanalysis. it begins by explaining the most important concepts of lacanian psychoanalysis. the beckettian characters are studied regarding their state of unconscious, and not the state of consciousness as is common in most beckett studies. according to lacan, language plays the sole role in ...
Freshwater sharks and rays
with an animal that is cognitively so capable, but has a brain anatomy that is so vastly different from us mammals, you start asking questions about our core concepts on the relationship between brain structure and function. So, I came to realize that very different kinds of brains can generate very similar kinds of mental operations. And when you realize this, you start asking yourself how exa...
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In 1917 Parker and van Heusen published their historic paper on the behavioural responses of the catfish, Amiurus nebulosus, to metallic and non-metallic rods. They found a blindfolded Amiurus to be remarkably sensitive to metallic rods, regularly responding to them even at a distance of some centimetres, whereas a glass rod did not elicit a reaction until it actually touched the skin of the an...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2010
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.034439