electric organ of the stargazer, Astroscopus (Brevoort)
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electric organ of the stargazer, Astroscopus (Brevoort) (a new form of electric apparatus in an American Teleost by Ulric Dahlgren

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Published by Verlag von Gustave Fischer in [Jena .
Written in English


  • Electric organs in fishes.

Book details:

Edition Notes

Statementby Ulric Dahlgren... and C.F. Silvester....
ContributionsSilvester, Charles Frederick, 1876-1929.
The Physical Object
Paginationp.[387]-403 :
Number of Pages403
ID Numbers
Open LibraryOL21559163M

Download electric organ of the stargazer, Astroscopus (Brevoort)


COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. Other articles where Electric stargazer is discussed: perciform: Danger to human life: Especially well-armed are the electric stargazers (Astroscopus; Uranoscopidae), which are capable of discharging up to 50 volts of electricity from the modified muscle tissue just posterior to the eyes; in addition, they possess a venom spine just above the pectoral fins.   The Northern Stargazer Astroscopus guttatus whiles away the long lazy days lying mostly buried by sand, the stargazy eyes on top of its head picking out prey – mostly small fish – to ambush and stuff into its bizarre YKK zip-mouth. It can bury itself in seconds. An adult stargazer may grow to nearly 2-foot of concealed eating machine. Electric organs have evolved independently at least six different times (see Fig. ): once in the African Mormyriformes, once in the South American Gymnotiformes, once in the “modern” teleost order Perciformes (the stargazer Astroscopus), twice in cartilaginous fishes (once in the torpedinoids or electric rays and once in the rajoids or.

Astroscopus y-graecum This unusual, stout fish has completely adapted to spending most of its life buried in sand, waiting to ambush its prey and gulp it down whole. Its eyes, gill slits, nostrils and most of its mouth are on the top of its body, and its pectoral fins are adept at digging and burying.   In some stargazers, specifically the Astroscopus and Uranoscopus, they aren’t just poisonous but can also give electric shocks. The electric organ – or, where the electric field is created, and from where the electricity is discharged – is located in their eye muscles, while the Uranoscopus has the electric field in the sonic muscle.   The Northern Stargazer is adapted to a life buried in the sand waiting to ambush its prey. Look closely at the video to see the placement of its eyes and mouth at the top of its head, this allows. Astroscopus countermani, sp. nov., a new stargazer from the Miocene (Tortonian) of Calvert Cliffs (Maryland), is described herein based on well-preserved three-dimensional cranial remains.

While I certainly enjoyed Evernight, the first book in Claudia Gray's trilogy, I definitely think that Stargazer was a better read. Gray shows quite a bit of improvement with this story and leaves us hanging, anxiously waiting for Hourglass (due out in March)/5(). fig. 2 photograph of a living astroscopus guttatus half buried in the sand in the aquarium in washington. captured at norfolk, va., and shows the fine-spotted pattern of the typical northern strain. from d. s. jordan's book on fishes after a photograph by dr. r. w. shufelt from a twelve-inch bay fish. No matter what age you are, this beautifully written and magical tale reminds us that anything is truly possible. Stargazer captures the heart and imagination as it recounts the life-changing adventure of a fluffy yet surprising intergalactic hero!. Stargazer paperback and ebook has just been released and is available now for order here.   The species within the genera Astroscopus and Uranoscopus can also cause electric shocks. Astroscopus species have a single electric organ consisting of modified eye muscles, while Uranoscopus species have theirs derived from sonic muscles. They are some of the few marine bioelectrogenic bony fishes, the other being the striped catfish.