Navigation Links
Albatross study shows regional differences in ocean contamination

As long-lived predators at the top of the marine food chain, albatrosses accumulate toxic contaminants such as PCBs, DDT, and mercury in their bodies. A new study has found dramatic differences in contaminant levels between two closely related albatross species that forage in different areas of the North Pacific. Researchers also found that levels of PCBs and DDT have increased in both species over the past ten years.

The differences in contaminant levels between black-footed and Laysan albatrosses indicate regional differences in the contamination of North Pacific waters, said Myra Finkelstein, a postdoctoral researcher at the University of California, Santa Cruz, who led the study.

"The black-footed albatrosses forage mostly in the California Current, whereas the Laysan albatrosses forage at higher latitudes near Alaska. So it appears that the California Current system has significantly higher concentrations of these contaminants," Finkelstein said.

The researchers published their findings in the April issue of the journal Ecological Applications.

Mercury and organochlorine compounds such as PCBs (polychlorinated biphenyls), DDT, and related compounds persist in the environment for a long time and build up in the tissues of animals high on the food chain. Analysis of blood samples showed that concentrations of these compounds in black-footed albatrosses were 370 to 460 percent higher than in Laysan albatrosses.

The two species breed at the same sites in the Hawaiian Islands. But when they leave their breeding colonies on foraging trips, the black-footed albatrosses head northeast toward the West Coast of North America, while Laysan albatrosses head northwest toward the northern and western regions of the North Pacific.

Black-footed and Laysan albatrosses both consume a mixed diet of squid, fish, and fish eggs. Finkelstein analyzed nitrogen isotope ratios in the two species--an indicator of an animal's "trophic lev
'"/>

Source:University of California - Santa Cruz


Page: 1 2 3

Related biology news :

1. Bioartificial kidney under study at MCG
2. W.M. Keck Foundation funds study of friendly microbes
3. Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
4. Genome-wide mouse study yields link to human leukemia
5. Clam embryo study shows pollutant mixture adversely affects nerve cell development
6. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
7. Same mutation aided evolution in many fish species, Stanford study finds
8. Sequencing of marine bacterium will help study of cell communication
9. Genetically modified rice in China benefits farmers health, study finds
10. A new study examines how shared pathogens affect host populations
11. NYU study reveals how brains immune system fights viral encephalitis
Post Your Comments:
(Date:4/17/2014)... study suggests that fish consumption advisories for expecting ... long-lived contaminants like persistent organic pollutants (POPs). ... researchers including University of Toronto Scarborough PhD student ... how different levels of environmental contamination, a mother,s ... in the body influenced exposure in her children. ...
(Date:4/17/2014)... hundred births, Down syndrome - or trisomy 21 - ... It results from a chromosomal abnormality where cells of ... (1% of the human genome). A study conducted by ... Genetic Medicine and Development at the University of Geneva ... shed light on how the extra chromosome 21 upsets ...
(Date:4/17/2014)... in bone marrow need to produce hydrogen sulfide in ... to a new study from the Center for Craniofacial ... of USC. , Professor Songtao Shi, principal investigator on ... by the cells governs the flow of calcium ions. ... that results in osteogenesis, or the creation of new ...
Breaking Biology News(10 mins):Fish consumption advisories fail to cover all types of contaminants 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 3
... PHILADELPHIA People with the heritable disorder of the ... develop basal cell carcinoma of the skin may have ... According to results of a placebo-controlled, randomized, double-blind, Phase ... inhibiting the development of basal cell carcinomas in a ...
... being recognized for devising a new way to study a ... investigating its role in the communication of important genetic messages ... Last year, the team, led by J. Andrew Hockert, at ... Health Science Center School of Medicine, put in its crosshairs ...
... HILL Bacteria can swim, propelling themselves through fluids using ... strolling along solid surfaces using little fibrous legs called pili. ... establish the infections such as meningitis that cause ... Now researchers at the University of North Carolina at Chapel ...
Cached Biology News:Celebrex inhibited the burden of skin cancer in high-risk patients 2Researchers pin down long-elusive protein that's essential to 'life as we know it' 2Researchers pin down long-elusive protein that's essential to 'life as we know it' 3A single atom controls motility required for bacterial infection 2A single atom controls motility required for bacterial infection 3
(Date:1/15/2014)... 15, 2014 DTS Language Services, Inc ... Web Portal for Life Science organizations who need document translations. ... subject matter of their documents in advance with a selection ... time-to-delivery of translations, often a critical factor in clinical and ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Date: Friday, April ... Location: Warrington Country Club, 1360 Almshouse Road, Warrington, Pa. ... nonprofit organization solely dedicated to finding a cure for hepatitis ... worldwide, will host its annual Crystal Ball on Friday, April ...
(Date:1/14/2014)... EquitiesIQ, a leading informational research provider, has ... an emerging biomedical company acquiring, developing, manufacturing, and marketing ... Free report download: http://equitiesiq.com/reports/alliqua/ , In late ... and Board, which launched the company’s new strategy to ...
(Date:1/14/2014)... , Jan. 14, 2014  RXi Pharmaceuticals Corporation (OTCQX: ... and commercializing innovative therapies addressing major unmet medical ... received the Notice of Allowance from the United ... self-delivering RNAi compounds (sd-rxRNA®), for the treatment of ...
Breaking Biology Technology:DTS Improves Efficiency for Life Science Document Translations 2Hepatitis B Foundation to Host Annual Crystal Ball Gala 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3
... 23, 2012 SiREM ( www.siremlab.com ) and ... signing of a Sales Agency Agreement between the ... Tersus Environmental will market, promote and sell SiREM,s ... as well as Gene-Trac® molecular testing services and ...
... Mich. and AMSTERDAM, Feb. 23, 2012   Rubicon ... sample-specific pre-analytical processes to improve the capabilities ... platforms, today announced a clinical supply agreement ... TransPLEX® whole genome RNA amplification technology.  Agendia ...
... Inc. (OTCBB: AMBS), a biotechnology company developing MANF, ... Gerald E. Commissiong, President and CEO, will present ... National Investment Banking Association (NIBA) conference on Thursday, ... Pavillon Hotel in New Orleans, LA. Mr. Commissiong ...
Cached Biology Technology:Rubicon Genomics and Agendia Sign Agreement for Use of TransPLEX® Whole Genome RNA Amplification Technology With Symphony™ Cancer Diagnostics 2Rubicon Genomics and Agendia Sign Agreement for Use of TransPLEX® Whole Genome RNA Amplification Technology With Symphony™ Cancer Diagnostics 3Amarantus BioSciences to Present at the 2012 National Investment Banking Association Conference in New Orleans 2
... the cost-effective solution for entry level imaging ... research imaging tasks, MetaVue enables time lapse, ... analysis. Compatibility with MetaMorphs extensive and ... has the power to drive motorized microscopes, ...
... for microRNA expression profiling ,miRCURY ... Locked Nucleic Acid (LNA) technology to provide ... short microRNA (miRNA) targets. miRCURY LNA Arrays ... RNA (no need for microRNA enrichment) labeled ...
... XL extends the MSn performance of the ... tools to generate extensive structural information for ... , Multiple dissociation techniques (PQD, ETD, ... unpredicted metabolites , Fast polarity switching for ...
For removal of the zona pellucida. Sterile, Mouse Embryo tested...
Biology Products: