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Latest Dusky shark Stories

2011-04-29 08:15:00

Studies show that coastal sharks have "DNA zip codes" that can reveal where they were born; underscores potential of DNA testing to monitor fin trade STONY BROOK, N.Y., April 29, 2011 /PRNewswire-USNewswire/ -- An international team of scientists, led by the Institute for Ocean Conservation Science at Stony Brook University, has used DNA to determine that groups of dusky sharks (Carcharhinus obscurus) and copper sharks (Carcharhinus brachyurus) living in different coastal regions across...

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2011-04-28 06:35:00

An international team of scientists have used DNA to determine that groups of dusky sharks and copper sharks living in different coastal regions across the globe are in fact separate populations of each species. Both groups are heavily exploited for the shark fin trade, which claims tens of millions of animals every year to produce the Asian delicacy: shark fin soup. Many of these fish are declining rapidly as a result of pressures of fishing for their fins. The dusky shark is classified by...

2010-12-20 16:13:00

WASHINGTON, Dec. 20, 2010 /PRNewswire-USNewswire/ -- Matt Rand, director of the Pew Environment Group's Global Shark Conservation Campaign, issued the following statement today in response to the U.S. Senate passing the Shark Conservation Act, which was introduced by Sen. John Kerry (D-MA). (Photo: http://photos.prnewswire.com/prnh/20101220/DC20295) "The Senate has acted decisively today to help protect sharks, the predators at the top of the global marine food chain. The Shark...

2010-03-23 09:34:00

DOHA, Qatar, March 23 /PRNewswire-USNewswire/ -- Sharks were the big losers today at the 15th Conference of the Parties (CoP 15) of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) meeting in Doha. "CITES Parties voted by the slimmest of margins to protect porbeagle sharks, but rejected all other shark proposals at this meeting," said Dr. Ralf Sonntag, Director IFAW Germany. "An Appendix II listing would have given sharks a fighting chance against...

2009-08-13 14:35:59

Sandbar, dusky and tiger sharks are among dozens of shark species living in the coastal waters off the U.S. East Coast. Little is known about many of the species, but a survey begun nearly 25 years ago is helping scientists and fishery resource managers to monitor shark populations and their role in marine ecosystems.NOAA scientists from the Northeast Fisheries Science Center (NEFSC) lab in Narragansett, R.I., recently conducted their ninth coastal shark survey from Florida to Delaware. ...

2009-06-25 06:00:00

WASHINGTON, June 25 /PRNewswire-USNewswire/ -- The Pew Environment Group today called for stronger shark conservation measures worldwide as a new report by the International Union for Conservation of Nature (IUCN) classifies 35 out of 64 known pelagic shark and related ray species around the world as threatened or near threatened with extinction.   The IUCN report was released just days before a joint meeting of the world's fishery managers in San Sebastian, Spain. The regional...

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2008-02-19 05:00:00

The scalloped hammerhead shark will be added to the "globally endangered" species list this year.  Among the reasons are over-fishing and demand for shark fins, according to discussions that took place during last week's annual meeting of the American Association for the Advancement of Science (AAAS). Speaking at the Boston meeting, Dr Julia Baum, a marine ecologist at the Scripps Institution of Oceanography and a member of the World Conservation Union (IUCN), said excessive fishing...

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2008-02-17 18:05:00

Sharks are disappearing from the world's oceans. The numbers of many large shark species have declined by more than half due to increased demand for shark fins and meat, recreational shark fisheries, as well as tuna and swordfish fisheries, where millions of sharks are taken as bycatch each year. Now, the global status of large sharks has been assessed by the World Conservation Union (IUCN), which is widely recognized as the most comprehensive, scientific-based information source on the...


Latest Dusky shark Reference Libraries

39_5c4164a9c4a88d70fea54083048675b8
2007-03-13 10:23:08

The Dusky shark, Carcharhinus obscurus, is one of the larger species of shark, reaching 771.62 lb (350 kg). The Dusky shark is also known as the Black whaler and Dusky whaler. Less frequently used names include Bay-shark, Brown dusky shark, Brown shark, Common whaler, and Dusky ground shark. Physical description The dusky shark has a long streamlined body that is brown or gray above and white below. On the side of the body a stripe can be seen from the pelvic fins to the head. They can...

39_f006f25da1c13d9ed39c93629af8f543
2007-03-13 10:09:47

The Blacktip shark, Carcharhinus limbatus, is a large shark, native to the continental and insular shelves of tropical and warm temperate seas around the world. The Blacktip is a large fairly stout shark, grey in color, normally with black-tipped fins. It has a long, narrow, pointed snout, long gill slits, a large first dorsal fin and fairly large second dorsal. Taxonomy The Blacktip shark was first described by Achille Valenciennes in Müller & Henle (1839) as Carcharias...

39_728617d02c18e51c1bb2e73640fb478a
2007-03-13 10:00:09

The Silky shark, Carcharhinus falciformis, is a large pelagic shark of tropical and warm temperate seas. Distribution This species is found worldwide in tropical and warm temperate > 73.4 °F (> 23 °C) seas. It is usually pelagic, but sometimes approaches the coast, especially at remote offshore islands. It is found to depths of at least 1640.42 ft (500 m). Appearance This shark has a large 'typical' shark body, slender with 'silky' smooth skin. It is brown-grey dorsally and...

39_1b7f137a05015a221ff6e56325631669
2007-03-13 09:57:29

The Copper shark, Bronze whaler, or Narrowtooth shark, Carcharhinus brachyurus, is a large shark of the Carcharhinidae family, found in subtropical seas and oceans worldwide, except the eastern coast of North America and the northern Indian Ocean. Their length is up to about 11.48 ft (3.5 m) and they can weigh up to 661.39 lb (300 kg). The Bronze whaler has a blunt broad snout, narrow bent cusps on the upper teeth, and no interdorsal ridge. They are gray to bronze in color on the back, and...

39_86505d43bf1eb242a2cdfefa74ab8770
2007-03-13 09:51:56

The graceful shark, Carcharhinus amblyrhynchoides, is a requiem shark of the family Carcharhinidae, found in the Indo-Pacific oceans between latitudes 21° N and 25° S, from the surface to 164.04 ft (50 m). Its length is up to about 5.25 ft (1.6 m). The graceful shark is a little-known inshore coastal pelagic species, feeding mainly on fishes but also crustaceans and cephalopods. It is viviparous. The flesh is utilized fresh and dried salted for human consumption, the fins are used in...

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Word of the Day
vermicular
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.
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