title: Temporal distribution of accumulated metal mixtures in two feral fish species and the relation with condition metrics and community structure.
abstract: The present study investigated temporal influences on metal distribution in gudgeon (Gobio gobio) and roach (Rutilus rutilus), and its relation to condition metrics and fish community structure. Fish communities were sampled in two seasons (autumn and spring) during two successive years and the Index of Biotic Integrity (IBI) was calculated. Cadmium, Cu, Pb, Zn and As concentrations were measured in gill, liver, kidney and muscle, and condition factor (CF) and hepatosomatic index (HSI) were measured. Cadmium (max. 39.0 μg g(-1) dw) and Zn (max 2502 μg g(-1) dw) were most strongly stored in kidney and liver and periodical influences on metal accumulation were observed. CF appeared to be a stable metric related to accumulated metal-mixtures and was best related to hepatic levels, while the HSI was less useful. Relations between single metal accumulation and IBI were influenced by sample period, however, when taking into account multiple metals periodical influences disappeared.
authors.affiliation: Department of Biology, Systemic Physiological and Ecotoxicological Research (SPHERE), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium. Electronic address: maarten.dejonge@uantwerpen.be.
authors.forename: M
authors.initials: M
authors.lastname: De Jonge
authors.affiliation: Research Institute for Nature and Forest (INBO), Duboislaan 14, 1560 Groenendaal-Hoeilaart, Belgium.
authors.forename: C
authors.initials: C
authors.lastname: Belpaire
authors.affiliation: Research Institute for Nature and Forest (INBO), Duboislaan 14, 1560 Groenendaal-Hoeilaart, Belgium.
authors.forename: G
authors.initials: G
authors.lastname: Van Thuyne
authors.affiliation: Research Institute for Nature and Forest (INBO), Duboislaan 14, 1560 Groenendaal-Hoeilaart, Belgium.
authors.forename: J
authors.initials: J
authors.lastname: Breine
authors.affiliation: Department of Biology, Systemic Physiological and Ecotoxicological Research (SPHERE), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
authors.forename: L
authors.initials: L
authors.lastname: Bervoets
mesh_terms: D000818:Animals; D002104:Cadmium / Q000032:analysis; D003530:Cyprinidae / Q000378:metabolism; D004784:Environmental Monitoring; D005399:Fishes / Q000378:metabolism*; D005880:Gills / Q000737:chemistry / Q000378:metabolism; D008099:Liver / Q000737:chemistry / Q000378:metabolism; D008670:Metals / Q000032:analysis / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical; D002104:Cadmium
keywords: Condition factor (CF); Fish communities; Hepatosomatic index (HSI); Index of biotic integrity (IBI); Metal accumulation