Navigation Links
New analysis confirms sharks are in trouble
Date:9/29/2011

Sharks are in big trouble on the Great Barrier Reef and worldwide, according to an Australian-based team who have developed a world-first way to measure rates of decline in shark populations.

"There is mounting evidence of widespread, substantial, and ongoing declines in the abundance of shark populations worldwide, coincident with marked rises in global shark catches in the last half-century," say Mizue Hisano, Professor Sean Connolly and Dr William Robbins from the ARC Centre of Excellence for Coral Reef Studies and James Cook University.

"Overfishing of sharks is now recognized as a major global conservation concern, with increasing numbers of shark species added to the International Union for the Conservation of Nature's list of threatened species," they say in the latest issue of the international science journal PLos ONE.

"Evaluating population trends for sharks is complicated," explains Professor Connolly. "The simplest approach of looking at trends in fisheries catches doesn't work well for sharks. First, many countries with coral reefs don't keep reliable records of catches or fishing effort. Second, around 75 per cent of the world shark catch consists of illegal and unreported finning. Third, sharks may be caught, discarded, and not reported when fishers are targeting other species."

"An alternative is to take estimates of shark growth, birth, and mortality rates, and use these to calculate population growth rates. Estimates of growth and birth rates are easy to get, but it is very hard to get good estimates of mortality in sharks and other large animals," he says.

To deal with this problem, the team developed several alternative models, which combined birth rates and growth rates for sharks with a variety of different methods for estimating mortality. They then used state-of-the art statistical methods to combine the uncertainty associated with each of these methods and arrive at a more robust lon
'/>"/>

Contact: Sean Connolly
Sean.Connolly@jcu.edu.au
61-074-781-4242
ARC Centre of Excellence in Coral Reef Studies
Source:Eurekalert

Page: 1 2

Related biology news :

1. Human Microbiome Project awards funds for technology development, data analysis and ethical research
2. MIT analysis shows how cap-and-trade plans can cut greenhouse emissions
3. Microarray analysis improves prenatal diagnosis
4. Powerful online tool for protein analysis provided pro bono by Stanford geneticist
5. US science education organization updates analysis
6. Execretion analysis aids primate social studies
7. Analysis of fresh strawberries reveals consumer preferences
8. Boehringer Ingelheim uses Genomatix Next Generation Sequencing data analysis systems
9. JCVI program trains USDA scientists on eukaryotic genome analysis
10. CRG buys Genomatix Next Generation Sequencing analysis solution
11. MCTP bought Genomatix NextGen Sequencing analysis stations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/21/2015)... 2015 High crime rate, ... boosting access control systems market in Saudi ... recently published report by TechSci Research " Saudi Arabia Access ... control systems market in Saudi Arabia ... access control systems market in the Kingdom is growing ...
(Date:4/20/2015)... -- The announcement comes as demand for ... (GRM), Ireland,s foremost records management company, ... up an impressive track record of clients within the first ... records management sector in Dubai . As ... and employ a further eight staff members at its Irish ...
(Date:4/14/2015)...  HYPR Corp. today announced it has joined ... tm , an industry consortium transforming online authentication ... technology and collaborate to deliver open specifications for ... and private, and easier to use. ... sensitive user information and eliminates the dependency on ...
Breaking Biology News(10 mins):Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 2Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 3HYPR Corp. Joins the FIDO Alliance 2HYPR Corp. Joins the FIDO Alliance 3
... the piano, first you have to learn notes, scales and chords ... of music. The same principle applies to speech and to reading, ... the rules of grammar. But how do separate small ... It has been shown that a specific area of the ...
... portable, wireless cameras and monitoring equipment for recording and ... who watches nature programs on TV. However, common to ... life, which becomes particularly troublesome when using such equipment ... the International Journal of Computational Science and Engineering ...
... that determine the size of plants have fascinated plant ... understood. An international research team led by plant scientists ... in the scientific journal The Plant Cell . ... from cell division to cell specialization. By extending the ...
Cached Biology News:How does the brain create sequences? 2A good tern deserves another 2Plant scientists unravel a molecular switch to stimulate leaf growth 2
(Date:5/20/2015)... Mass. , May 20, 2015  Haemonetics Corporation ... Concannon , President & CEO, will present at The ... York on June 1 st , 2015 ... may access Mr. Concannon,s presentation live via webcast at: ... Haemonetics (NYSE: HAE ) is a global ...
(Date:5/20/2015)... May 20, 2015  Resolution Bioscience announced today the ... ALK TM , a blood-based liquid biopsy for an ... carcinoma (NSCLC), the most common form of this cancer. ... guide patients to personalized therapies and direct them into ... The Department of Health, the CLIA authority in ...
(Date:5/20/2015)... North Carolina , 20. Mai ... Unternehmen für klinische Logistik (Clinical Logistics ... das Geschäftsjahr 2014, das am 31. ... Das Unternehmen hat die Marktentwicklung übertroffen ... Logo - http://photos.prnewswire.com/prnh/20110930/NY78064LOGO ...
(Date:5/20/2015)... Winston-Salem, NC (PRWEB) May 20, 2015 ... Winston-Salem, NC based not-for-profit organization, is pleased to announce ... International Clinical Trials Day. These donations represent the effort ... a study at the GGI partner sites in 2014. ... and highlight the greater good of clinical trial participation, ...
Breaking Biology Technology:Resolution Bioscience Receives CLIA Certification for its Diagnostic Laboratory and Launches CLIA-Certified Liquid Biopsy for Lung Cancer 2Marken schließt Ergebnisse für das Geschäftsjahr 2014 ab 2The Greater Gift Initiative Donates over 10,000 Vaccines in Honor of International Clinical Trials Day 2
... Chromatography and Mass Spectrometry Application Note , ... Electron Corporation, San Jose, CA , ... Rapid identification of low abundance proteins in complex mixtures is one ... research. Traditionally, this approach has utilized 3-dimensional quadrupole ion trap systems, such ...
... Chromatography and Mass Spectrometry Application Note ... Structure Elucidation Metabolite ID Mass Frontier , ... , Introduction , ... metabolites plays a crucial role throughout its development. In the early discovery ...
... Chromatography and Mass Spectrometry Application Report , ... Corporation, San Jose, CA , ... Use of LC/MS n has experienced a dramatic increase in applications ... studies. The Finnigan LCQ series ion trap mass spectrometers meet the demands ...
Cached Biology Technology:Complex Peptide Mixture Analysis on the Finnigan LTQ Linear Ion Trap Mass Spectrometer 2Complex Peptide Mixture Analysis on the Finnigan LTQ Linear Ion Trap Mass Spectrometer 3Complex Peptide Mixture Analysis on the Finnigan LTQ Linear Ion Trap Mass Spectrometer 4Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 2Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 3Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 4Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 5Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 6Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 7Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 8Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 9Analysis of a Verapamil Microsomal Incubation using Metabolite ID and Mass FrontierTM 10Use of On-line Size Exclusion Chromatography (SEC) for Sample Clean-up in LC/MS Analyses 2Use of On-line Size Exclusion Chromatography (SEC) for Sample Clean-up in LC/MS Analyses 3Use of On-line Size Exclusion Chromatography (SEC) for Sample Clean-up in LC/MS Analyses 4
... SMZ line is a Greenough stereomicroscope designed for ... is available with a choice of a large ... base (N2GG). This microscope can be easily connected ... at the same time giving you ultimate flexibility. ...
... siRNA applications, contains magnetic nanoparticles (MagTag) which ... of interest. Exploiting magnetic force the full ... towards and delivered into the target cells ... be used for adherent cells; for suspension ...
...
... TNT Coupled Reticulocyte Lysate Systems(a,b,c,d) offer ... vitro translations: a single-tube, coupled transcription/translation ... simplify the process and reduce the ... translation results. Standard rabbit reticulocyte lysate ...
Biology Products: