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Mammals metabolize some pesticides to limit their biomagnification

Date:
July 21, 2014
Source:
Wiley
Summary:
The concentrations of many historically used, and now widely banned, pesticides and other toxic chemicals -- called legacy contaminants -- can become magnified in an animal that eats contaminated food. However, a new study has found that Arctic mammals metabolize some currently used pesticides, preventing such 'biomagnification.'

The concentrations of many historically used, and now widely banned, pesticides and other toxic chemicals -- called legacy contaminants -- can become magnified in an animal that eats contaminated food. However, a new study has found that Arctic mammals metabolize some currently used pesticides, preventing such 'biomagnification.'

The study appears in the journal Environmental Toxicology & Chemistry.

Researchers who studied the vegetation-caribou-wolf food chain in the Bathurst region of Canada say that currently use pesticides enter the food chain and become concentrated in vegetation, but the evidence shows that they are not biomagnified through the diets of their consumers.

"Since these pesticides replaced some legacy contaminants that do biomagnify in similar food chains, this is good news for the wildlife and the people of the Arctic who survive by hunting caribou and other animals," said first author Adam Morris. "But this is still only a small part of a much larger picture regarding replacement contaminants and how they're behaving compared with their legacy counterparts."


Story Source:

The above story is based on materials provided by Wiley. Note: Materials may be edited for content and length.


Journal Reference:

  1. Adam D. Morris, Derek C.G. Muir, Keith R. Solomon, Camilla Teixeira, Mark Duric, Xiaowa Wang. Trophodynamics of current use pesticides and ecological relationships in the Bathurst region vegetation-caribou-wolf food chain of the Canadian Arctic. Environmental Toxicology and Chemistry, 2014; DOI: 10.1002/etc.2634

Cite This Page:

Wiley. "Mammals metabolize some pesticides to limit their biomagnification." ScienceDaily. ScienceDaily, 21 July 2014. <www.sciencedaily.com/releases/2014/07/140721123928.htm>.
Wiley. (2014, July 21). Mammals metabolize some pesticides to limit their biomagnification. ScienceDaily. Retrieved September 17, 2014 from www.sciencedaily.com/releases/2014/07/140721123928.htm
Wiley. "Mammals metabolize some pesticides to limit their biomagnification." ScienceDaily. www.sciencedaily.com/releases/2014/07/140721123928.htm (accessed September 17, 2014).

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