title: Field assessment of reproduction-related traits of chironomids using a newly developed emergence platform (E-Board).
abstract: Further progress in the development of reliable biomonitoring strategies requires to better link effects in aquatic ecological systems to ambient concentrations of chemical contaminants. Among existing tools, in situ bioassays using caging method represent an interesting way to achieve this challenge. However, elaboration of adapted exposure chambers and suitable operating procedures is still required, particularly to assess ecological relevant traits such as those related to the reproduction. In such context, we developed a new device (Emergence board - E-Board) which allows assessing in rivers the development of the Chironomus riparius species from the early fourth instar larvae to the adult stage. The system acts as a suspended matter trap floating in the subsurface of the water equipped of an emergence trap for catching adults. The system was tested in actual field conditions. Its easy handling allowed obtaining data which demonstrated its applicability for assessing the development of the chironomids. Moreover, by adapting energy-based models (DEB) specifically developed in the laboratory for the species C. riparius, we were able to predict the growth pattern and the emergence of chironomids in real environmental conditions. The E-Board represents thus a promising new in situ tool in perspective of evaluation of the quality of the ecosystems.
authors.affiliation: Swiss Centre for Applied Ecotoxicology Eawag/EPFL (Centre Ecotox), EPFL-ENAC-IIE-GE, Station 2, 1015 Lausanne, Switzerland; Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, BP 32108, 69626 Cedex, Villeurbanne, France. Electronic address: benoit.ferrari@centreecotox.ch.
authors.forename: Benoît J D
authors.initials: BJ
authors.lastname: Ferrari
authors.affiliation: UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78026 Versailles, France; Irstea, UR MALY, Centre de Lyon-Villeurbanne, 5 rue de la Doua, BP 32108, 69626 Cedex, Villeurbanne, France.
authors.forename: Juliette
authors.initials: J
authors.lastname: Faburé
mesh_terms: D000818:Animals; D001681:Biological Assay / Q000379:methods; D002683:Chironomidae / Q000187:drug effects* / Q000254:growth & development; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D019015:Geologic Sediments / Q000737:chemistry; D007814:Larva / Q000187:drug effects / Q000254:growth & development; D008962:Models, Theoretical; D012098:Reproduction / Q000187:drug effects*; D045483:Rivers / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D014874:Water Pollutants, Chemical
keywords: Biomonitoring; Chironomus riparius; Dynamic Energy Budget; Endocrine disruptors; Reproduction; Sediment