Navigation Links
Hammerhead shark double whammy
Date:3/26/2012

arks thought to be scalloped hammerheads based on their physical appearance. A research team from the University of South Carolina independently confirmed the existence of the new species in 2006.

Combining genetic assessments of NSU and South Carolina researchers shows that at least 7 percent of the sharks in U.S. waters originally thought to be scalloped hammerheads turned out to be the new species. This means that the population of the endangered real scalloped hammerhead in U.S. waters is probably smaller than originally thought.

The status of the scalloped hammerhead (Sphyrna lewini) is currently under review by the U.S. National Marine Fisheries Service to determine if it warrants listing as threatened or endangered under the U.S. Endangered Species Act. It's already on the red list of endangered species of the International Union for Conservation of Nature and Natural Resources (IUCN). The new species is on neither list.

"We hope that during this important scalloped hammerhead status review, the new look-alike species will be recognized, and possible impacts of historical mix-ups between the two species on past scalloped hammerhead stock assessments will be considered," says Shivji.

According to Danillo Pinhal, Ph.D., an assistant professor at the UNESP-So Paulo State University in Brazil who performed the lab work as a visiting graduate student in Shivji's laboratory in 2009, "the finding of this species all the way down in Brazilian waters, where hammerhead sharks are heavily fished, raises concerns about the population status of both species not just in U.S. waters but throughout the western Atlantic. It's an international issue now and it's essential that further research on this new species be conducted in Brazilian waters."

Other than differences in their DNA, the two shark species also differ in their number of vertebrae. The new look-alike species has approximately 20 fewer vertebrae than the
'/>"/>

Contact: Ken Ma
ken.ma@nova.edu
954-621-7961
Nova Southeastern University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. University of Miami scientists track great hammerhead shark migration
2. Hammerhead shark study shows cascade of evolution affected size, head shape
3. Wide heads give hammerheads exceptional stereo view
4. New species of deep-sea catshark described from the Galapagos
5. Law that regulates shark fishery is too liberal: UBC study
6. Neurotoxins in shark fins: A human health concern
7. Amazing skin gives sharks a push
8. Study of skates and sharks questions assumptions about essential genes
9. New study illustrates the physics behind great white shark attacks on seals
10. Details of ancient shark attack preserved in fossil whale bone
11. Humans and sharks share immune system feature
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Hammerhead shark double whammy
(Date:8/28/2014)... app called TX Invasives is now available from the ... Texas at Austin for identifying harmful non-native plant, insect ... in the United States cause about $137 billion in ... crops, clog waterways, kill native plants and more. , ... for reporting where invasive species occur, we,re more likely ...
(Date:8/28/2014)... America (ESA) is pleased to announce the selection of ... Society. Honorary Membership acknowledges those who have served ESA ... the affairs of the Society that has reached an ... the ESA Governing Board and then voted on by ... the Awards Ceremony at Entomology 2014, ESA,s Annual Meeting ...
(Date:8/28/2014)... bacterial culprits that may drive inflammatory bowel diseases (IBD) ... own intestinal immune responses as a guide. , The ... Cell . , Trillions of bacteria exist within the ... the development and progression of IBD. Yet it,s thought ... a person,s susceptibility to IBD and its potential severity. ...
Breaking Biology News(10 mins):Mobile app makes ID of harmful plants, insects in Texas a snap 2Fred Baxendale selected as Honorary Member of the Entomological Society of America 2Yale study identifies possible bacterial drivers of IBD 2
... + Lomb, the global eye health company, announced today that ... unowned shares of Technolas ™ Perfect Vision GmbH (TPV), ... was established in 2009 through a joint venture between Bausch ... sell advanced refractive and cataract technologies. The deal is expected ...
... -- Four innovating life science fields to keep an ... and tissue culture. Thanks to an aging population and ... these markets are on the rise. (Photo: ... (GII) presents four innovative life science market research reports ...
... . , Methane is formed under the absence ... the sea floor. It is a much more powerful greenhouse ... this gas is inactivated before it reaches the atmosphere and ... have now proven that these microorganisms are quite picky about ...
Cached Biology News:Bausch + Lomb to Acquire Technolas Perfect Vision GmbH 2Bausch + Lomb to Acquire Technolas Perfect Vision GmbH 3Global Market for Blood Banking and Blood Products Projected to reach $43 billion by 2018; Spectrometers and Fluorometers to Reach $18.4 bn; Anticoagulants to Reach $12.9 bn; Cell and Tissue Culture Supplies to Reach $5.6 bn 2Global Market for Blood Banking and Blood Products Projected to reach $43 billion by 2018; Spectrometers and Fluorometers to Reach $18.4 bn; Anticoagulants to Reach $12.9 bn; Cell and Tissue Culture Supplies to Reach $5.6 bn 3Global Market for Blood Banking and Blood Products Projected to reach $43 billion by 2018; Spectrometers and Fluorometers to Reach $18.4 bn; Anticoagulants to Reach $12.9 bn; Cell and Tissue Culture Supplies to Reach $5.6 bn 4Strange diet for methane consuming microorganisms 2
(Date:8/28/2014)... California, USA (PRWEB) August 28, 2014 ... Department of Physics and Optical Science and Director of ... University of North Carolina at Charlotte, and co-founder and ... elected to serve as the 2015 Vice President of ... SPIE 2014 President Philip Stahl announced recent election results ...
(Date:8/28/2014)... Nevada City, CA (PRWEB) August 28, 2014 ... and sanitation products for the food processing industry, is ... conducting a side-by side comparison of the E2 soap ... Q E2 Sanitizing Foam Soap . Hand hygiene ... pathogens in the food processing environment. Six key criteria ...
(Date:8/28/2014)... August 28, 2014 Best Sanitizers, Inc., ... an alcohol-based hand sanitizer, asks food processors and food ... the hand sanitizer they’re currently using to Best Sanitizers’ ... hygiene is critical to fighting cross-contamination and the spread ... Sanitizers believes there are key criteria that make a ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 “This kit has ... to screen from 0 to 150 ppb,” said Mark Tess, ... a significant benefit to plant owners and USDA-GIPSA inspection agencies ... other commodities. Testing can take place in a matter of ... can the plant test the feed and grain before accepting ...
Breaking Biology Technology:Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 3
Rabbit polyclonal to 13,14 dihydro 15 keto Prostaglandin E2 ( Abpromise for all tested applications)....
Goat polyclonal to T7 tag (Agarose) Immunogen: Goats were immunized with MASMTGGQQMG (T7) conjugated to KLH.After multiple immunizations in Freund's adjuvant, serum was collected....
Insect Cell Lysis Buffer 50 ml...
Mouse monoclonal [11C9] to Zeralenone ( Abpromise for all tested applications). Antigen: Chemical / Small Molecule conjugated to BSA: Zeralenone...
Biology Products: