Navigation Links
The secret life of Ireland's smooth-hound sharks
Date:10/3/2010

They grow to over a meter in length, can weigh up to twelve kilos and each summer they swarm into the shallow waters of the Irish east coast. Despite this, the starry smooth-hound has remained Ireland's least well known shark species. However, thanks to researchers at University College Dublin, whose work is now published in the Journal of Fish Biology, this may be about to change.

Dr. Edward Farrell, who recently graduated from UCD School of Biology & Environmental Science, spent the last four years studying these unusual sharks. Under the supervision of Dr. Stefano Mariani of the SBES and Dr. Maurice Clarke of the Marine Institute, the PhD project successfully investigated the age, growth, reproduction and identification of the species in the Northeast Atlantic.

"It's amazing how little was known about this species considering their size and abundance on the east coast," said Farrell. "Until recently we weren't even sure what species we were dealing with but we developed a genetic method which allowed us to confirm that it is the starry smooth-hound which occurs in Irish waters and not the related common smooth-hound. Once this was established we were able to investigate their life-history."

Starry smooth-hounds were previously considered to be a fast growing and early maturing species, meaning they were not a conservation concern. However the results of the four year project have revealed that starry smooth-hounds in Irish waters actually grow twice as slowly as previously estimated and only reproduce every two years rather than annually as is the case in the Mediterranean.

"Some of the findings are quite worrying for the species as males don't mature until they are 4-5 years old and females until they are 6 years old, said Farrell. "Females also appear to take two years to complete the reproductive cycle. The pups develop inside the female for approximately 12 months before being born after which the female has a
'/>"/>

Contact: Ben Norman
Lifesciencenews@wiley.com
44-124-377-0375
Wiley-Blackwell
Source:Eurekalert  

0

GOOD

Page: 1 2 3

Related biology news :

1. Looking for secrets to drug addiction in our blood
2. Neutrons helping ORNL researchers unlock secrets to cheaper ethanol
3. Ancient brew masters tapped antibiotic secrets
4. Secrets of the gecko foot help robot climb
5. Frozen flies may yield secrets for human organ transplants
6. Unlocking the secrets of RNA biology with WIREs
7. The secret of life may be as simple as what happens between the sheets -- mica sheets
8. Scientists unlock secret of rabies transmission in bats
9. Behind the secrets of silk lie high-tech opportunities
10. Ear bones reveal spawning secrets of Lake Erie walleye
11. What secrets are stored in the roots of corn plants?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The secret life of Ireland's smooth-hound sharks
(Date:5/23/2013)... be the world,s most popular fruit, can be made ... purple GM varieties. , "Working with GM tomatoes ... addition of a specific compound, allows us to pinpoint ... Cathie Martin from the John Innes Centre. , The ... flavour, health and shelf life characteristics because even higher ...
(Date:5/23/2013)... mechanism by which estrogen suppresses lipid synthesis in the ... approach toward treating certain liver diseases. , With ... are changing long-held views in the field. Study results ... Science Signaling . , "The dogma in the ... only receptors located in the nucleus respond to steroid ...
(Date:5/23/2013)... A new report from the Institute of Medicine ... in at least 60 minutes of vigorous or moderate ... than half of American youth meet current evidence-based guidelines ... intensity physical activity daily, according to the report, which ... school for nearly half of their waking hours, the ...
Breaking Biology News(10 mins):The world's favorite fruit only better-tasting and longer-lasting 2UCI study reveals new mechanism for estrogen suppression of liver lipid synthesis 2Schools should provide students with daily physical activity, IOM recommends 2
... cameras in our cell phones have dramatically changed the way ... instantly available to friends and family. Now, the imaging sensor ... helping engineers at the California Institute of Technology (Caltech) transform ... platform for a "smart" petri dish. Dubbed ePetri, ...
... more than 100 years ago by Camillo Golgi, the ... as a critical sorting and processing station for intracellular ... endoplasmic reticulum and then dispatches this to the plasma ... such as endosomes. The Golgi also plays an important ...
... of seabird in the Galpagos, the child abuse "cycle of violence" ... study of Nazca boobies by Wake Forest University researchers provides the ... when they are young often grow up to be abusers. ... The Auk . "We were surprised by the ...
Cached Biology News:Caltech engineers build smart petri dish 2Caltech engineers build smart petri dish 3Child abuse in birds: Study documents 'cycle of violence' in nature 2
(Date:5/23/2013)... Can economic incentives such as gift cards, T-shirts, ... public to increase their donations of blood? , A ... School Assistant Professor Mario Macis says the answer ... of recent research that supports their argument, the three ... Science that the World Health Organization and national blood ...
(Date:5/23/2013)... May 23, 2013 The maker community ... types of inventions. They focus on learning practical skills ... community gravitate toward bringing their ideas to life via ... Movement, works on making projects using biology. Glowing Plant ... plants to make them glow with bioluminescence genes, and ...
(Date:5/23/2013)... Pa. , May 23, 2013 ... research and advisory firms for specialized biopharmaceutical issues, ... hepatologists, and infectious disease specialists reported that in ... patients (e.g., intentionally delaying treatment) in anticipation of ... than six months ago, when only 6 percent ...
(Date:5/23/2013)... SOUTH EASTON, Mass. , May 23, 2013 /PRNewswire/ ... "Company") today announced that the Company will host a ... and to provide a business update. The teleconference information ... 2013 Time: 11:00 a.m. Eastern Daylight Time (EDT) ... Canada ); (302) 607-2001 (Int,l) Passcode: VS22823 ...
Breaking Biology Technology:Offering Economic Incentives to Attract Blood Donations Should Be Encouraged, Research Team writes in Science 2Offering Economic Incentives to Attract Blood Donations Should Be Encouraged, Research Team writes in Science 3Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home 2The Majority of Physicians that Treat Hepatitis C Virus (HCV) Have Begun "Warehousing" and Preparing Their HCV Patients for the Next Generation of HCV Treatments 2The Majority of Physicians that Treat Hepatitis C Virus (HCV) Have Begun "Warehousing" and Preparing Their HCV Patients for the Next Generation of HCV Treatments 3Pressure BioSciences, Inc. to Discuss First Quarter 2013 Financial Results and Provide Business Update 2
... June 29 Centocor Ortho Biotech Inc. announced today that ... against Abbott Laboratories in a patent infringement suit. , ... our favor in the patent litigation case against Abbott," said ... in question relates to the company,s anti-TNF class of arthritis ...
... BioSpecifics Technologies Corp. (Nasdaq: BSTC ), a biopharmaceutical ... it was added to the Russell 3000 and Russell 2000 ... June 29, 2009. The Russell family of U.S. indexes is ... of the investable U.S. equity market. , , The ...
... SGP ) is scheduled to announce its sales and earnings ... , , At approximately 7:45 a.m. (EDT) on ... for the 2009 second quarter. Fred Hassan, Schering-Plough,s chairman and ... , , To listen live to the call, dial ...
Cached Biology Technology:Centocor Ortho Biotech Inc. Awarded $1.67 Billion Patent Jury Verdict from Abbott Laboratories 2BioSpecifics Technologies Corp. Added to Russell 3000 and Russell 2000 Indexes 2Schering-Plough Schedules Conference Call Webcast for 2009 Second Quarter Earnings 2
Includes PROTEAN II xi Basic unit and IPG conversion kit PROTEAN II XL Cell, wide format, Compatible with ReadyStrip IPG Strips 1.0 mm 165-3188 1.5 mm 165-3189 2.0 mm 165-3190...
... cell, 20 cm, is used for vertical slab ... agarose gels. The cell is supplied without spacers ... core with gaskets, lower buffer chamber, lid with ... clamps, upper buffer dam, casting stand with gaskets, ...
... This depletion cocktail is ... T cells from suspensions of ... Cells are separated using the ... negative selection system. The CD4+ ...
... uses the Adept CE 4100 high pressure dual ... dual wavelength detector for added flexibility. ... software and interface unit, CE 4901., The CE ... also be used with Windows 98 and 2000, ...
Biology Products: