title: Energy reserves and metal-storage granules in the hepatopancreas of Oniscus asellus and Porcellio scaber (Isopoda) from a metal gradient at Avonmouth, UK.
abstract: Isopods taken from populations of Onsicus asellus and Porcellio scaber from long-term polluted sites in the vicinity of metal smelting works at Avonmouth, South West England, and from a control site near Tübingen, South Germany, were examined for the frequency and size of metal-containing granules (spherites), lipid droplets and glycogen in their hepatopancreas. The number and size of spherites in the hepatopancreas of O. asellus increased with decreasing distance to the smelter, but such a trend was not found in P. scaber. A trend towards massive reduction in hepatopancreatic energy reserves (lipid, glycogen) with increasing soil metal pollution was observed for O. asellus while, in contrast, the lipid and glycogen content of P. scaber midgut gland cells was independent of the distance to the smelter. In view of previous reports on metal accumulation and biochemical responses to metal pollution, we propose that the two investigated isopod species, which form stable populations in the Avonmouth metal gradient, use different strategies to survive.
authors.affiliation: Cell Biology, Zoological Institute, University of Tübingen, Auf der Morgenstelle 28, D-72076 Tübingen, Germany. ralph.schill@uni-tuebingen.de
authors.forename: Ralph O
authors.initials: RO
authors.lastname: Schill
authors.forename: Heinz-R
authors.initials: HR
authors.lastname: Köhler
mesh_terms: D000818:Animals; D003445:Crustacea / Q000187:drug effects / Q000378:metabolism; D004784:Environmental Monitoring; D005858:Germany; D043143:Hepatopancreas / Q000187:drug effects / Q000378:metabolism; D033321:Isopoda / Q000187:drug effects / Q000378:metabolism; D019216:Metals, Heavy / Q000378:metabolism / Q000633:toxicity*; D012989:Soil Pollutants / Q000378:metabolism / Q000633:toxicity*
chemical_list: D019216:Metals, Heavy; D012989:Soil Pollutants
references.citation: Anat Anz. 1964 Jul 31;115:81-2
references.pmid: 14249822
references.citation: Ecotoxicology. 2004 Nov;13(8):725-37
references.pmid: 15736845
references.citation: Arch Environ Contam Toxicol. 1990 Sep-Oct;19(5):699-703
references.pmid: 21318501
references.citation: Histochemistry. 1984;81(4):331-5
references.pmid: 6511487
references.citation: Environ Pollut. 2000 May;108(2):209-17
references.pmid: 15092951
references.citation: Oecologia. 1976 Jun;23 (2):107-114
references.pmid: 28309028
references.citation: Cell Biol Toxicol. 1988 Mar;4(1):97-109
references.pmid: 3228708
references.citation: Cell Biol Toxicol. 1988 Mar;4(1):81-96
references.pmid: 3228707
references.citation: Ecotoxicology. 2004 Nov;13(8):739-55
references.pmid: 15736846
references.citation: Ecotoxicology. 1995 Apr;4(2):114-37
references.pmid: 24197619
references.citation: Oecologia. 1982 Aug;54(2):227-232
references.pmid: 28311432
references.citation: Bull Environ Contam Toxicol. 1989 Jun;42(6):847-53
references.pmid: 2743017
references.citation: Calcif Tissue Res. 1977 Dec 28;24(2):199-200
references.pmid: 597758