Arsenic Accumulation in Bark Beetles and Forest Birds Occupying Mountain Pine Beetle Infested Stands Treated with Monosodium Methanearsonate

CHRISTY A.MORRISSEY; COURTNEY A.ALBERT; PATTI L.DODS

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Arsenic Accumulation in Bark Beetles and Forest Birds Occupying Mountain Pine Beetle Infested Stands Treated with Monosodium Methanearsonate

机译：Arsenic Accumulation in Bark Beetles and Forest Birds Occupying Mountain Pine Beetle Infested Stands Treated with Monosodium Methanearsonate

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The arsenic-based pesticide,monosodium methanearsonate (MSMA),is presently being evaluated for re-registration in Canada and the United States and has been widely used in British Columbia to help suppress Mountain Pine Beetle (MPB) outbreaks.We assessed the availability and exposure of MSMA to woodpeckers and other forest birds that may prey directly on contaminated bark beetles.Total arsenic residues in MPB from MSMA treated trees ranged from 1.3-700.2 mug g-1 dw (geometric mean 42.0 mu g g-1) with the metabolite monomethyl arsonic acid (MMAA) contributing 90-97 to the total arsenic extracted.Live adult and larval beetles were collected from treated trees and reached concentrations up to 327 mu g g-1 dw.MPBs from reference trees had significantly lower arsenic concentrations averaging 0.19 mug g-1 dw.Woodpeckers foraged more heavily on MSMA trees that contained beetles with lower arsenic residues,suggesting those trees had reduced MSMA translocation and possibly greater live beetle broods.Blood samples from five species of woodpeckers and other forest passerines breeding within 1 km of MSMA stands contained elevated levels of total arsenic but with large individual variability (geometric mean = 0.18 mu g g-1 dw,range 0.02-2.20 mu g-1).The results indicate that there is significant accumulation and transfer of organic arsenic within the food chain at levels that may present a toxicity risk to avian wildlife.

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《Environmental Science & Technology: ES&T》 |2007年第4期|1494-1500|共7页
作者
CHRISTY A.MORRISSEY; COURTNEY A.ALBERT; PATTI L.DODS;
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作者单位

Environment Canada,Canadian Wildlife Service,Pacific Wildlife Research Centre,5421 Robertson Road,Delta,British Columbia,Canada,V4K 3N2,Department of Biological Sciences,Simon Fraser University,8888 University Drive,Burnaby,British Columbia,Canada,V5;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种英语
中图分类环境化学;
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Arsenic Accumulation in Bark Beetles and Forest Birds Occupying Mountain Pine Beetle Infested Stands Treated with Monosodium Methanearsonate

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