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Latest Electroreception Stories

A Collage Of Senses Help Sharks Hunt For Food: Study
2014-04-07 11:22:28

[ Watch the Video: Sharks Sense Prey In Surprising Way ] Brett Smith for redOrbit.com - Your Universe Online Sharks are highly-evolved killing machines and a new study published in the open-access journal PLOS ONE has compiled a comprehensive picture of how these marine predators hunt – from start to finish. The study portrays the collage of senses used by sharks to detect, track and strike their prey with ruthless efficiency. The research team – from the University of South...

Shark Embryos Use Natural Repellant To Avoid Predators
2013-01-10 12:04:28

[Watch Video: Embryonic Bamboo Sharks Respond To Predators] Brett Smith for redOrbit.com - Your Universe Online In search of a better shark repellent, Australian marine biologist Ryan Kempster stumbled upon a behavior by embryonic sharks designed to evade predators sniffing around for lunch. Drawing on the same electroreceptors that adult sharks use to find prey, tiny embryonic bamboo sharks can sense predators and completely stop any movement, essentially ℠playing...

2012-01-05 16:39:24

In 1997, scientists at the Center for Neurodynamics at the University of Missouri - St. Louis demonstrated that special sensors covering the elongated snout of paddlefish are electroreceptors that help the fish detect prey by responding to the weak voltage gradients that swimming zooplankton create in the surrounding water. Now some of the same researchers have found that the electroreceptors contain oscillators, which generate rhythmical firing of electrosensory neurons. The oscillators...

Nearly All Vertebrates Descended From Ancestor With Sixth Sense
2011-10-12 04:49:05

A new study finds that sharks, paddlefishes and certain other aquatic vertebrates have a sixth sense: the ability to detect weak electrical fields in the water, and to use this information to detect prey, communicate and orient themselves. The study, which caps more than a quarter century of work, found that the vast majority of vertebrates — roughly 30,000 species of land animals (including humans) and a roughly equal number of ray-finned fishes — descended from a common...

2011-04-28 21:24:24

A novel way to ramp up biodiversity Bruce Carlson stands next to a fish tank in his lab, holding a putty colored Radio Shack amplifier connected to two wires whose insulation has been stripped. At the bottom of the tank a nondescript little fish lurks in a sawed-off section of PVC pipe. Carlson sticks the two bare wires into the tank. Suddenly we hear a rapid-fire pop, pop, pop, pop, pop, pop. The pops, which are surprisingly loud, sound rather like the static on an old-fashioned tube radio...

74dc3d11c1197b5163fbe3f5009724be1
2006-02-14 07:45:00

NASA -- Sharks are known for their almost uncanny ability to detect electrical signals while hunting and navigating. Now researchers have traced the origin of those electrosensory powers to the same type of embryonic cells that gives rise to many head and facial features in humans. The discovery, reported by University of Florida scientists in the current edition of Evolution & Development, identifies neural crest cells, which are common in vertebrate development, as a source of sharks'...


Latest Electroreception Reference Libraries

0_8faeea39d6bec9ee1a4c8279064595d1
2007-05-21 06:18:54

The Electric eel, Electrophorus electricus, is a species of fish. It is capable of generating powerful electric shocks, which it uses for both hunting and self-defense. It is a top predator in its South American range. Despite its name it is not an eel at all but rather a knifefish. Taxonomy The species is so unusual that it has been reclassified several times. Originally it was given its own family Electrophoridae, and then placed to a genus of Gymnotidae alongside Gymnotus....

42_f294be1ec1fa65e8319af46dc77bf24b
2006-12-12 11:27:08

The platypus is a semi-aquatic endemic to eastern Australia and Tasmania. Together with the four species of echidna, it is one of the five species of monotremes, the only mammals that lay eggs instead of giving birth to live young. It is the sole living representative of its family and genus, though a number of related species have been found in the fossil record. The unique appearance of this egg-laying, duck-billed mammal baffled naturalists when it was first discovered, with some...

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Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
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