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Sharks, dolphins store pollutants

Florida's top aquatic predators are rapidly accumulating high concentrations of brominated flame retardants and other persistent toxic chemicals.

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1. Photo-monitoring whale sharks
   12-26-2007 · EurekAlert!
   Up to 20 meters long and weighing as much as 20 tons, its enormous size gives the whale shark its name. Listed as a rare species, relatively little is known about whale sharks. However, a new study combines computer-assisted photographic identification with ecotourism to study the rare species and suggests whale shark populations in Ningaloo, Western Australia are healthy. The study appears in the Ecological Society of America's January issue of Ecological Applications.
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2. Food for Thought: New Estimates of the Shark-Fin Trade
   11-04-2006 · Science News Online
   A new study of the Asian fish market yields a disturbing estimate of how many sharks are killed each year to satisfy demand for a pricy Asian soup.
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3. Ongoing collapse of coral reef shark populations
   12-04-2006 · EurekAlert!
   Investigators have revealed that coral reef shark populations are in the midst of rapid decline, and that "no-take zones" -- reefs where fishing is prohibited -- do protect sharks, but only when compliance with no-take regulations is high. The findings, reported by William Robbins and colleagues at James Cook University and its ARC Centre of Excellence for Coral Reef Studies, appear in the December 5th issue of Current Biology.
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4. Reef sharks threatened by overfishing
   12-05-2006 · EurekAlert!
   Research by scientists at the ARC Centre of Excellence for Coral Reef Studies and James Cook University has warned that coral reef shark populations on the Great Barrier Reef are in the midst of a catastrophic collapse.
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5. NASA probes the sources of the world's tiny pollutants
   01-30-2007 · EurekAlert!
   Pinpointing pollutant sources is an important part of the ongoing battle to improve air quality and to understand its impact on climate. Scientists using NASA data recently tracked the path and distribution of aerosols -- tiny particles suspended in the air -- to link their region of origin and source type with their tendencies to warm or cool the atmosphere.
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6. Too Few Jaws: Shark declines let rays overgraze scallops
   03-31-2007 · Science News Online
   A shortage of big sharks on the U.S. East Coast is letting their prey flourish, and that prey is going hog wild, demolishing bay scallop populations.
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7. Bony vertebrate evolution: Elephant sharks closer to humans than teleost fish
   04-02-2007 · EurekAlert!
   The cartilaginous elephant shark has a basal phylogenetic position useful for understanding jawed vertebrate evolution. Survey sequencing of its genome identified four Hox clusters, suggesting that, unlike for teleost fishes, no additional whole-genome duplication has occurred.
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8. Virgin Birth: Shark has daughter without a dad
   05-26-2007 · Science News Online
   DNA testing of two sharks confirms an instance of reproduction without mating, adding a fifth major vertebrate lineage to those known for occasional virgin births.
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9. Higher levels of pollutants found in fish caught near a coal-fired power plant
   11-07-2007 · EurekAlert!
   Emissions from coal-fired power plants may be an important source of water pollution and fish contamination, say researchers at the University of Pittsburgh. Researchers found higher-than-EPA-recommended levels of mercury and elevated levels of selenium in channel catfish caught in a rural area downwind from a coal-fired power plant. Based on testing of 63 fish, they found that fish caught near the power plant had 19 times more mercury than store-bought fish.
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10. Scientists ramp up ability of poplar plants to disarm toxic pollutants
    10-15-2007 · EurekAlert!
    The most common contaminant at Superfund sites is the industrial solvent trichloroethylene. Experimental poplar plants, several inches tall and growing in a solution laced with trichloroethylene, were able break down, or metabolize, the pollutant into harmless byproducts at rates 100 times that of the control plants.
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