{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T09:12:12Z","timestamp":1784625132107,"version":"3.55.0"},"reference-count":24,"publisher":"Oxford University Press (OUP)","issue":"11","license":[{"start":{"date-parts":[[2019,8,23]],"date-time":"2019-08-23T00:00:00Z","timestamp":1566518400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"},{"start":{"date-parts":[[2019,10,3]],"date-time":"2019-10-03T00:00:00Z","timestamp":1570060800000},"content-version":"vor","delay-in-days":41,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"TCU Research and Creative Activities Fund Grant","award":["Grant 60745"],"award-info":[{"award-number":["Grant 60745"]}]},{"name":"TCU Science and Engineering Research Center Grant for undergraduates","award":["Grant 150302"],"award-info":[{"award-number":["Grant 150302"]}]},{"name":"TCU Invests in Scholarship Grant","award":["Grant 66013"],"award-info":[{"award-number":["Grant 66013"]}]}],"content-domain":{"domain":["setac.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2019,8,23]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Terrestrial organisms such as shoreline spiders that consume prey from aquatic food webs can be contaminated with methylmercury (MeHg). However, no studies have examined the relationship between MeHg contamination of shoreline spider taxa and the proportion of aquatic and terrestrial prey in their diets. The present study had 2 objectives: 1) determine concentrations of MeHg in 7 taxa of shoreline spiders, and 2) assess the relationship between concentrations of MeHg in spiders and the proportion of aquatic and terrestrial prey in spider diets. We collected shoreline spiders, emergent aquatic insects, and terrestrial insects from in and around 10 experimental ponds. Methylmercury concentrations were greatest in spiders, intermediate in aquatic insects, and lowest in terrestrial insects. The elevated MeHg concentrations in spiders indicate that they were feeding, at least in part, on emergent aquatic insects. However, variability in MeHg concentration observed among spider taxa suggested that the proportion of aquatic and terrestrial prey in spider diets likely varied among taxa. We estimated the proportion of aquatic and terrestrial prey in the diet of each spider taxon from the nitrogen (\u03b415N) and carbon (\u03b413C) isotope values of spiders and their potential aquatic and terrestrial prey items. The median proportion of aquatic prey in spider diets varied by almost 2-fold, and MeHg concentrations in shoreline spiders were strongly correlated with the proportion of aquatic prey in their diet. In the present study, we demonstrate for the first time that the degree of connectivity to aquatic food webs determines MeHg contamination of shoreline spiders. Environ Toxicol Chem 2019;38:2503\u20132508. \u00a9 2019 SETAC<\/jats:p>\n               <jats:p>Abstract<\/jats:p>\n               <jats:p>The concentration of MeHg in spider taxa increased as a function of the proportion of aquatic prey in their diet, demonstrating for the first time that the degree of connectivity to aquatic food webs determines MeHg contamination of shoreline spiders.<\/jats:p>","DOI":"10.1002\/etc.4579","type":"journal-article","created":{"date-parts":[[2019,8,23]],"date-time":"2019-08-23T14:48:04Z","timestamp":1566571684000},"page":"2503-2508","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Relationship Between Methylmercury Contamination and Proportion of Aquatic and Terrestrial Prey in Diets of Shoreline Spiders"],"prefix":"10.1093","volume":"38","author":[{"given":"Celeste L.","family":"Ortega-Rodriguez","sequence":"first","affiliation":[{"name":"Department of Biology Texas Christian University Fort Worth Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew M.","family":"Chumchal","sequence":"additional","affiliation":[{"name":"Department of Biology Texas Christian University Fort Worth Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ray W.","family":"Drenner","sequence":"additional","affiliation":[{"name":"Department of Biology Texas Christian University Fort Worth Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James H.","family":"Kennedy","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences University of North Texas Denton Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weston H.","family":"Nowlin","sequence":"additional","affiliation":[{"name":"Aquatic Station, Department of Biology Texas State University San Marcos Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin D.","family":"Barst","sequence":"additional","affiliation":[{"name":"Water and Environmental Research Center University of Alaska Fairbanks Fairbanks Alaska USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D. 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