Effect of Body Size on Methylmercury Concentrations in Shoreline Spiders: Implications for Their Use as Sentinels
| Autor: | Madeline P. Hannappel, Lexton P. Trauffler, Benjamin D. Barst, J. Margaret Castellini, Matthew M. Chumchal, Ray W. Drenner, Audrey R. Nolan, James H. Kennedy, F. Manton Willoughby |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Health Toxicology and Mutagenesis Zoology Schizocosa 010501 environmental sciences Body size 010603 evolutionary biology 01 natural sciences chemistry.chemical_compound Animals Body Size Environmental Chemistry Methylmercury 0105 earth and related environmental sciences Pardosa Shore Spider geography geography.geographical_feature_category biology Spiders Methylmercury Compounds biology.organism_classification Texas chemistry Bioaccumulation Tetragnatha |
| Zdroj: | Environmental Toxicology and Chemistry. 40:1149-1154 |
| ISSN: | 1552-8618 0730-7268 |
| DOI: | 10.1002/etc.4964 |
| Popis: | Shoreline spiders have been proposed as sentinels to monitor aquatic contaminants including methylmercury (MeHg). The present study examined the effect of spider body size on MeHg concentrations in shoreline spiders. We collected 6 taxa of spiders belonging to 4 families (orb-weavers [Araneidae], long-jawed orb weavers [Tetragnathidae: Tetragnatha sp.], jumping spiders [Salticidae], and wolf spiders [Lycosidae: Pardosa sp., Rabidosa sp., and Schizocosa sp.]) from the shorelines of 14 human-made ponds at the Lyndon B. Johnson National Grasslands in north Texas (USA). As a proxy for body size, we measured leg length (tibia + patella) of each spider. Spider taxa differed by 3-fold in mean MeHg concentration, and MeHg concentrations in 4 of 6 spider taxa increased significantly with leg length. The present study is the first to demonstrate that shoreline spider MeHg concentrations increase as a function of spider body size. Because spider size may account for some within-taxa variation in MeHg concentrations, future studies that utilize spiders as sentinels of aquatic contamination by MeHg or other biomagnifying contaminants should take spider size into account. Environ Toxicol Chem 2021;40:1149-1154. © 2020 SETAC. |
| Databáze: | OpenAIRE |
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