Navigation Links
New study reveals vulnerability of sharks as collateral damage in commercial fishing
Date:7/22/2014

MIAMI A new study that examined the survival rates of 12 different shark species when captured as unintentional bycatch in commercial longline fishing operations found large differences in survival rates across the 12 species, with bigeye thresher, dusky, and scalloped hammerhead being the most vulnerable. The study, led by researchers at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science and UM Abess Center for Ecosystem Science and Policy, provides new information to consider for future conservation measures for sharks in the Northwest Atlantic.

The unintentional capture of a fish species when targeting another species, known as bycatch, is one of the largest threats facing many marine fish populations.

Researchers from UM and the National Marine Fisheries Service analyzed over 10 years of shark bycatch data from the western Atlantic Ocean and Gulf of Mexico tuna and swordfish longline fisheries to examine how survival rates of sharks were affected by fishing duration, hook depth, sea temperature, animal size and the target fish. Some species, such as the tiger shark, exhibited over 95% survival, whereas other species survival was significantly lower, in the 20-40% range, such as night shark and scalloped hammerheads.

"Our study found that the differences in how longline fishing is actually conducted, such as the depth, duration, and time-of-day that the longlines are fished can be a major driver of shark survival, depending on the species," said UM Rosenstiel School Ph.D student and lead author Austin Gallagher. "At-vessel mortality is a crucial piece of the puzzle in terms of assessing the vulnerability of these open-ocean populations, some of which are highly threatened."

The researchers also generated overall vulnerability rankings of species taking into account not only their survival, but also reproductive potential. They found that species most at risk were those wi
'/>"/>

Contact: Diana Udel
dudel@rsmas.miami.edu
305-421-4704
University of Miami Rosenstiel School of Marine & Atmospheric Science
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. Law that regulates shark fishery is too liberal: UBC study
3. New study will help protect vulnerable birds from impacts of climate change
4. Study jointly led by UCSB researcher supports theory of extraterrestrial impact
5. BYU study: Using a gun in bear encounters doesnt make you safer
6. 15-year study: When it comes to creating wetlands, Mother Nature is in charge
7. Pycnogenol (French maritime pine bark extract) shown to improve menopause symptoms in new study
8. Crystal structure of archael chromatin clarified in new study
9. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
10. University of Houston study shows BP oil spill hurt marshes, but recovery possible
11. Study demonstrates cells can acquire new functions through transcriptional regulatory network
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New study reveals vulnerability of sharks as collateral damage in commercial fishing
(Date:5/11/2015)... , May 11, 2015 Curemark LLC, ... the start of a new Phase III double blind, ... its novel formulation, CM-AT, on all children ages 3-8 ... its FDA Phase III double blinded clinical trial for ... low levels of the digestive enzyme chymotrypsin. This new ...
(Date:5/7/2015)... May 7, 2015 Fingerprint ... FPC1022 and FPC1035, FPC,s smallest touch fingerprint sensors ... mainly considered for integration on the backside of ... OEMs increased possibilities to integrate touch fingerprint sensors ... also improves possibilities for module manufacturers to customize ...
(Date:4/27/2015)... ATLANTA , April 27, 2015  For more ... and trade show has been the premier worldwide event ... Systems 2015 is a must-attend event for any local, ... insight into the emerging commercial markets and current applications ... and innovations of this projected $48 billion industry, and ...
Breaking Biology News(10 mins):Curemark, LLC, Launches New Phase III Trial in Expanded Population of Children with Autism 2FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5
... in China have an increased risk of schizophrenia, consistent ... deficiency and schizophrenia, according to a study in the ... violence and human rights. , Schizophrenia is a common ... hallucinations, and delusions, as well a as deterioration of ...
... scientists replace pricey solvents with cheap processing fluidsIn ... fluorescent quantum dots, scientists at Rice University have ... solvents used in quantum dot synthesis with cheaper ... , Rice's study, which was conducted under the ...
... conducted by a biologist at the University of California, San ... Animal Behaviour found that females of the species Uca crenulata ... their burrows before finally deciding on a mate. , “As ... sampling nearly as many candidates as the California fiddler crab,?said ...
Cached Biology News:Prenatal exposure to famine increases risk of schizophrenia 2The right drug at the right time 2The right drug at the right time 3Biologist Discovers What May Be World’s ‘Pickiest?Mates 2Biologist Discovers What May Be World’s ‘Pickiest?Mates 3
(Date:5/27/2015)... The Medical Innovation Impact Index (MI3), a ... medical innovation, has been developed at the Initiative ... University’s ( FDU ) Rothman Institute of Innovation and ... new FDA (Food & Drug Administration) draft guidance documents ... certain medical devices. , “The main impediment to ...
(Date:5/26/2015)... May 26, 2015 Innovacyn, a ... in the human and animal health industries, announced ... Future Innovators of Agriculture College Scholarship Award. The ... who exhibits a passionate commitment to the agriculture ... This year’s winners, Alexis Pedrow from Anderson County ...
(Date:5/26/2015)... 26, 2015  Alere Inc. (NYSE: ALR ) (the ... to timely file its Quarterly Report on Form 10-Q for ... it has received a notice from the New York Stock ... with the NYSE,s continued listing requirements under the timely filing ... Manual. The reason for the delay relates ...
(Date:5/26/2015)...  A simple blood test developed at the University ... Alzheimer,s disease is a step closer to being used ... that are needed before a blood test could be ... & Dementia . The guidelines establish protocols and reflect ... includes UNT Health Science Center. "If we ...
Breaking Biology Technology:Medical Innovation Impact Index Launched at Fairleigh Dickinson University’s Initiative for Patient-Centered Innovation (iPCI) under the Rothman Institute 2Innovacyn Announces Winners Of This Year’s Vetericyn® College Scholarship Award 2Innovacyn Announces Winners Of This Year’s Vetericyn® College Scholarship Award 3Guidelines bring UNT Health Science Center's blood test for Alzheimer's one step closer 2
... LAFAYETTE, Ind. - Researchers are developing a new ... for advanced optical technologies, including ultrapowerful microscopes and ... cloak. The new materials could make possible ... an assistant professor of electrical and computer engineering ...
... forces between atoms and surfaces with unprecedented precision, University ... our understanding of the structure of atoms and improve ... Physical Review Letters . Van der Waals ... they are among the weakest known chemical interactions, so ...
... MINNEAPOLIS, Jan. 25, 2011 Thomas, McNerney & Partners, ... in life science and medical technology companies, today announced ... Schiess to Vice President. "These promotions are ... have made as members of the Thomas, McNerney investment ...
Cached Biology Technology:New materials may bring advanced optical technologies, cloaking 2Physicists take new look at the atom 2Physicists take new look at the atom 3Physicists take new look at the atom 4Thomas, McNerney & Partners Promotes Two Members of its Investment Team 2
... Science, which pioneered the blending of thermostable ... and Expand Long Template PCR Systems, now ... the first product of a family ... blend combines Taq DNA Polymerase with a ...
... brings together two mature, well-understood technologies: ... surfaces. This combination produces a sensitive ... detection of molecular binding events without ... Protein-specific capture molecules are immobilized on ...
... polymers) are prepared by ... the enzyme, polynucleotide phosphorylase, ... the appropriate, ribonucleoside diphosphate ... exception of catalog number ...
... Bacillus globigii 5'GCCNNNN NGGC3' 3'CGGN NNNNCCG5' Inactivation ... min or phenol treatment followed by ethanol ... 200mM KCl, 0.1mM EDTA, 1.0mM DTT, 0.01% ... on dry ice. Store at -20C. Unit ...
Biology Products: