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Latest Batoidea Stories

2014-01-21 08:27:48

GLAND, Switzerland, Jan. 21, 2014 /PRNewswire-USNewswire/ -- A quarter of the world's sharks and rays are threatened with extinction, according to IUCN Red List(TM) criteria, with rays at greater risk than sharks. The findings, published today in the journal eLife, are part of a global assessment of 1,041 species conducted by the IUCN Shark Specialist Group. Ray and sharks are at substantially higher risk than most other groups of animals and have the lowest percentage of species...

Researchers Identify Ray Species Used For Their Filters In Asian Medical Trade
2013-09-20 10:02:32

Brett Smith for redOrbit.com - Your Universe Online A newly published study led by researchers at the University of Washington has identified the anatomical differences between the different filters of various marine rays. Study researchers said their findings could be used to assess the species of ray filters being sold in Asian apothecary shops and to create new and improved manufacturing filters. The Washington researchers said they have found enough signature markers to be able to...

2013-03-14 17:49:13

CITES plenary today accepted Committee recommendations to list five species of highly traded sharks under the CITES Appendices, along with those for the listing of both manta rays and one species of sawfish. Japan, backed by Gambia and India, unsuccessfully challenged the Committee decision to list the oceanic whitetip shark, while Grenada and China failed in an attempt to reopen debate on listing three hammerhead species. Colombia, Senegal, Mexico and others took the floor to defend...

First Satellite Study Of Tagged Manta Rays Exposes Hidden Habits
2012-05-12 06:01:44

Conservationists from the University of Exeter in the UK, the Government of Mexico, and the Wildlife Conservation Society have completed a revolutionary study of Manta Rays, utilizing innovative satellite tracking devices. The published study is the first to track the ocean´s largest ray, growing to twenty-five feet long, using satellite telemetry to ascertain the whereabouts of the endangered animal. The International Union for Conservation of Nature (IUCN) has listed the Manta ray...

Sawfish Behavior Leads To Species Own Decline
2012-03-06 05:58:15

[ Watch the Video ] A team of researchers led by Barbara Wueringer of the University of Queensland, Australia have been studying the feeding habits of the freshwater-dwelling sawfish Pristis microdon. The researchers found that when the sawfish feeds, it uses electrosensors in its long snout to detect the location of the prey in the water. The sawfish swipes, several times per second, at its prey with a side to side motion with enough force to saw the fish in half. The sawfish would...

2011-11-25 11:16:00

UN Conservation Convention Accepts Ecuador Proposal to List Largest Living Rays BERGEN, Norway, Nov. 25, 2011 /PRNewswire-USNewswire/ -- Shark Advocates International is heralding today's agreement by Parties to the Convention on Migratory Species of Wild Animals (CMS) to list the giant manta ray (Manta birostris) under CMS Appendix I and II. The listing obligates CMS member countries to provide strict national protections for giant manta rays and their habitats, and encourages concerted...

2009-05-23 18:30:33

With shark populations tumbling around the world, Chinese cooks are turning to manta and devil rays to fill their shark fin soup pots. Until recently, the rays were targeted only by subsistence fishermen, The Times of London reported Friday. Now, about 1,500 big manta rays are taken every year in the Indonesian fishing port of Lamakera. Tim Clark of the University of Hawaii said the rays could be overfished quickly. They have a long lifespan -- possibly more than 50 years -- and do not begin...

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2009-03-24 07:45:00

The genetic toolkit that animals use to build fins and limbs is the same genetic toolkit that controls the development of part of the gill skeleton in sharks, according to research to be published in Proceedings of the National Academy of Sciences on March 23, 2009, by Andrew Gillis and Neil Shubin of the University of Chicago, and Randall Dahn of Mount Desert Island Biological Laboratory. "In fact, the skeleton of any appendage off the body of an animal is probably patterned by the...

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2008-12-01 16:25:00

The University of Florida, keeper of the world's shark attack records, is also now overseeing a national records collection for another toothy marine predator: the sawfish. Distinguished by a long rostrum or "saw" that makes it a popular curio item and gives it its name, the sawfish has become a historical and cultural icon that is rapidly disappearing, said George Burgess, a UF ichthyologist and curator of both the International Shark Attack File and the newly expanded National Sawfish...


Latest Batoidea Reference Libraries

Reef Manta Ray, Manta alfredi
2012-12-29 11:15:17

The reef manta ray is found in shallow coastal waters around the Indo-West Pacific, The Red Sea, South Africa, Thailand and Western Australia. It can also be found around the southern islands of Japan and from Eastern Australia to French Polynesia, including the Hawaiian Islands. It will normally stay within a few miles of the shoreline around coral and rocky reef areas. The reef manta ray is the second largest of the ray family, reaching a maximum length of up to 16.4 feet and maximum...

Giant Oceanic Manta Ray, Manta Birostris
2012-12-29 11:07:10

The largest ray in the world is the giant oceanic manta ray. It is found in the open water of all the major oceans of the world. In the eastern Atlantic it can be seen from New Jersey to Uruguay; in the western Atlantic from the Azores Islands to South Africa; in the eastern Pacific from southern California to Peru and in the western Pacific from Japan to New Zealand. It also can be seen in the entire Indian Ocean. This manta ray will swim in deep water but enter the shallows around reefs for...

Cownose Ray, Rhinoptera Bonasus
2012-12-29 10:52:00

The cownose ray is found in the western Atlantic from the coast of Maine to southern Brazil. In the fall schools of 10,000 or more will migrate south to the warmer water of Yucatan, Mexico. The cownose ray is a bottom dweller at depths of up to 70 feet, in brackish (salty) water. As a territorial act the cownose will leap out of the water and land with a loud smack. An adult cownose has a brown body with a yellowish white belly, has an average wingspan of 45 inches and can weigh 50 lbs,...

Bull Ray, Pteromylaeus Bovinus
2012-12-27 16:11:25

The bull ray is found in the warm coastal waters, lagoons, and estuaries of Europe and Africa, mainly in the eastern Atlantic Ocean, Indian Ocean, Black Sea, and Mediterranean Sea. The full distribution of this species is unclear. It swims both near the surface and on the bottom to feed in small groups at depths of 200 ft or more, sometimes leaping out of the water. Occasionally it is called a duckbill ray in the region of South Africa. The shape of the head is where the bull ray gets its...

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2009-01-20 19:15:53

The Shovelnose Guitarfish (Rhinobatos productus) is a species of ray that is found in Pacific waters from central California down to the Sea of Cortez. It can be found, sometimes in large numbers, over sand or mud sand bottoms in colder, shallow coastal waters. This fish is also known as the Shovelnose Shark, Pointed-nosed Guitarfish, and simply Guitarfish. The body of the guitarfish is depressed and gradually tapers into the tail. The snout is somewhat long and rounded at the tip. The top...

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