Mercury in Little Brown Bat (Myotis lucifugus) Maternity Colonies and Its Correlation with Freshwater Acidity in Nova Scotia, Canada
Insectivorous little brown bats are exposed to elevated concentrations of mercury (Hg) through their preference for aquatic-based prey. Here we investigated spatial patterns of total Hg (THg) in fur from 10 little brown bat maternity colonies across Nova Scotia, and assessed relationships with the a...
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| Veröffentlicht in: | Environmental science & technology 2015-02, Vol.49 (4), p.2059-2065 |
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| creator | Little, Megan E Burgess, Neil M Broders, Hugh G Campbell, Linda M |
| description | Insectivorous little brown bats are exposed to elevated concentrations of mercury (Hg) through their preference for aquatic-based prey. Here we investigated spatial patterns of total Hg (THg) in fur from 10 little brown bat maternity colonies across Nova Scotia, and assessed relationships with the acidity of nearby lakes and rivers. Total Hg concentrations were measured in fur samples from 149 adult female little brown bats. Values showed significant variation among colonies (mean range 3.76–27.38 μg/g, dry weight), and 48% of individuals had Hg concentrations in excess of the 10 μg/g threshold associated with neurochemical changes in Chiroptera conspecifics (n = 26) from Virginia. Average surface water acidity parameters (pH and acid neutralization capacity) within an 8 km radius of each maternity roost showed strong negative associations with average colony fur THg concentrations. This suggests that freshwater acidity in foraging grounds explains much of the variation in average fur THg concentrations in little brown bat colonies. These findings highlight the significant role that water quality may have on Hg bioaccumulation within terrestrial species that feed on aquatic prey. |
| doi_str_mv | 10.1021/es5050375 |
| format | Article |
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Sci. Technol</addtitle><description>Insectivorous little brown bats are exposed to elevated concentrations of mercury (Hg) through their preference for aquatic-based prey. Here we investigated spatial patterns of total Hg (THg) in fur from 10 little brown bat maternity colonies across Nova Scotia, and assessed relationships with the acidity of nearby lakes and rivers. Total Hg concentrations were measured in fur samples from 149 adult female little brown bats. Values showed significant variation among colonies (mean range 3.76–27.38 μg/g, dry weight), and 48% of individuals had Hg concentrations in excess of the 10 μg/g threshold associated with neurochemical changes in Chiroptera conspecifics (n = 26) from Virginia. Average surface water acidity parameters (pH and acid neutralization capacity) within an 8 km radius of each maternity roost showed strong negative associations with average colony fur THg concentrations. 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These findings highlight the significant role that water quality may have on Hg bioaccumulation within terrestrial species that feed on aquatic prey.</description><subject>Acidity</subject><subject>Animals</subject><subject>Bats</subject><subject>Chiroptera</subject><subject>Chiroptera - growth & development</subject><subject>Chiroptera - metabolism</subject><subject>Environmental Monitoring - methods</subject><subject>Female</subject><subject>Food Chain</subject><subject>Hair - chemistry</subject><subject>Hydrogen-Ion Concentration</subject><subject>Lakes - chemistry</subject><subject>Mercury</subject><subject>Mercury - analysis</subject><subject>Mercury - pharmacokinetics</subject><subject>Myotis lucifugus</subject><subject>Nonnative species</subject><subject>Nova Scotia</subject><subject>Rivers - chemistry</subject><subject>Surface water</subject><subject>Virginia</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Pollutants, Chemical - pharmacokinetics</subject><subject>Water quality</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqN0c9LHDEUB_AgFd1aD_0HSqAUFJyaH5NMctSltsKuPVShtyGTeVsjs4kmmS579w9vlrUi7cVTIHze9_HeQ-g9JZ8pYfQUkiCC8EbsoAkVjFRCCfoGTQihvNJc_txHb1O6I4QwTtQe2mdCaErqZoIe5xDtGNfYeTxzOQ-Az2NYeXxuMj6ar0N2CQ-jdYvx15iO8dxkiN7lNZ6GIXgHCRvf48ucykeMMJjsgscrl2_xRYR0u9oU4DPr-k1R6XIVfhv8w5Zgc4KnxpvevEO7CzMkOHx6D9DNxZfr6bdq9v3r5fRsVhneyFxxBtrqrl5wVlOpKW9A9qqru0b1nJG6Vpb3ZTLdFQAdQK-00sBU00mrKfADdLTNvY_hYYSU26VLFobBeAhjaqmUNSOq4eoVVMiyQCZFoR__oXdhjL4MslGKFKKboo63ysaQUoRFex_d0sR1S0m7uWL7fMViPzwljt0S-mf592wFfNoCY9OLbv8F_QEtoqGg</recordid><startdate>20150217</startdate><enddate>20150217</enddate><creator>Little, Megan E</creator><creator>Burgess, Neil M</creator><creator>Broders, Hugh G</creator><creator>Campbell, Linda M</creator><general>American Chemical Society</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><scope>7X8</scope><scope>7QH</scope><scope>7UA</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>20150217</creationdate><title>Mercury in Little Brown Bat (Myotis lucifugus) Maternity Colonies and Its Correlation with Freshwater Acidity in Nova Scotia, Canada</title><author>Little, Megan E ; Burgess, Neil M ; Broders, Hugh G ; Campbell, Linda M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a376t-32e9c9b4f324169137e6d8b4b78d320448c3d5599b324ebeed8989e287b6c91e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Acidity</topic><topic>Animals</topic><topic>Bats</topic><topic>Chiroptera</topic><topic>Chiroptera - growth & development</topic><topic>Chiroptera - metabolism</topic><topic>Environmental Monitoring - methods</topic><topic>Female</topic><topic>Food Chain</topic><topic>Hair - chemistry</topic><topic>Hydrogen-Ion Concentration</topic><topic>Lakes - chemistry</topic><topic>Mercury</topic><topic>Mercury - analysis</topic><topic>Mercury - pharmacokinetics</topic><topic>Myotis lucifugus</topic><topic>Nonnative species</topic><topic>Nova Scotia</topic><topic>Rivers - chemistry</topic><topic>Surface water</topic><topic>Virginia</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Pollutants, Chemical - pharmacokinetics</topic><topic>Water quality</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Little, Megan E</creatorcontrib><creatorcontrib>Burgess, Neil M</creatorcontrib><creatorcontrib>Broders, Hugh G</creatorcontrib><creatorcontrib>Campbell, Linda M</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Little, Megan E</au><au>Burgess, Neil M</au><au>Broders, Hugh G</au><au>Campbell, Linda M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mercury in Little Brown Bat (Myotis lucifugus) Maternity Colonies and Its Correlation with Freshwater Acidity in Nova Scotia, Canada</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2015-02-17</date><risdate>2015</risdate><volume>49</volume><issue>4</issue><spage>2059</spage><epage>2065</epage><pages>2059-2065</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Insectivorous little brown bats are exposed to elevated concentrations of mercury (Hg) through their preference for aquatic-based prey. Here we investigated spatial patterns of total Hg (THg) in fur from 10 little brown bat maternity colonies across Nova Scotia, and assessed relationships with the acidity of nearby lakes and rivers. Total Hg concentrations were measured in fur samples from 149 adult female little brown bats. Values showed significant variation among colonies (mean range 3.76–27.38 μg/g, dry weight), and 48% of individuals had Hg concentrations in excess of the 10 μg/g threshold associated with neurochemical changes in Chiroptera conspecifics (n = 26) from Virginia. 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| subjects | Acidity Animals Bats Chiroptera Chiroptera - growth & development Chiroptera - metabolism Environmental Monitoring - methods Female Food Chain Hair - chemistry Hydrogen-Ion Concentration Lakes - chemistry Mercury Mercury - analysis Mercury - pharmacokinetics Myotis lucifugus Nonnative species Nova Scotia Rivers - chemistry Surface water Virginia Water Pollutants, Chemical - analysis Water Pollutants, Chemical - pharmacokinetics Water quality |
| title | Mercury in Little Brown Bat (Myotis lucifugus) Maternity Colonies and Its Correlation with Freshwater Acidity in Nova Scotia, Canada |
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