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E-M:/ Global Climate Change And Toxic Chemicals: A Potentially Lethal Combination




<x-tad-smaller>“The study suggests that rising global temperatures and the presence of environmental contaminants may influence the survival of many organisms but additional research is needed to understand the magnitude of the effect.”</x-tad-smaller>


<x-tad-smaller>Global Climate Change And Toxic Chemicals: A Potentially Lethal Combination</x-tad-smaller>

<x-tad-smaller>Science Daily — As temperature influences the toxic effects of</x-tad-smaller>

<x-tad-smaller>chemicals, so does chemical exposure influence the temperature tolerance</x-tad-smaller>

<x-tad-smaller>of an organism. The consequences of this harmful reciprocal relationship</x-tad-smaller>

<x-tad-smaller>on four freshwater fish are explored in a new study published in the</x-tad-smaller>

<x-tad-smaller>latest issue of Environmental Toxicology and Chemistry.</x-tad-smaller>

<x-tad-smaller> </x-tad-smaller>

<x-tad-smaller>The authors evaluated the effects of three organic chemicals commonly</x-tad-smaller>

<x-tad-smaller>found in the environment: endosulfan, chloripyrifos and phenol. The</x-tad-smaller>

<x-tad-smaller>first two are used as agricultural pesticides, and phenol is a common</x-tad-smaller>

<x-tad-smaller>industrial chemical and a component in plant extracts. Four fish</x-tad-smaller>

<x-tad-smaller>species, dwelling in different habitats inAustralia, were selected for</x-tad-smaller>

<x-tad-smaller>the tests.</x-tad-smaller>

<x-tad-smaller> </x-tad-smaller>

<x-tad-smaller>As demonstrated in previous studies, exposure to sublethal</x-tad-smaller>

<x-tad-smaller>concentrations of certain chemicals can cause stresses that limit an</x-tad-smaller>

<x-tad-smaller>organism’s ability to survive or tolerate changes in environmental</x-tad-smaller>

<x-tad-smaller>factors such as temperature. As expected, with the exception of phenol,</x-tad-smaller>

<x-tad-smaller>the current study confirms that prior exposure to sublethal</x-tad-smaller>

<x-tad-smaller>concentrations of the chemicals affects the ability of fish to tolerate</x-tad-smaller>

<x-tad-smaller>progressive temperature increases.</x-tad-smaller>

<x-tad-smaller> </x-tad-smaller><x-tad-smaller>snip
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<x-tad-smaller>To read the entire study, click here:</x-tad-smaller>

<x-tad-smaller>http://www.allenpress.com/pdf/entc_g26_07.1454-1459.pdf</x-tad-smaller>

<x-tad-smaller> </x-tad-smaller>

<x-tad-smaller>Environmental Toxicology and Chemistry is the monthly journal of the</x-tad-smaller>

<x-tad-smaller>Society of Environmental Toxicology and Chemistry (SETAC).</x-tad-smaller>

<x-tad-smaller> </x-tad-smaller>

<x-tad-smaller> </x-tad-smaller>

<x-tad-smaller> </x-tad-smaller>