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The influence of the season and the biotic factors on the cytosolic metal concentrations in the gills of the European chub (Leuciscus cephalus L.)

Dragun, Zrinka; Raspor, Biserka; Podrug, Marijana (2007) The influence of the season and the biotic factors on the cytosolic metal concentrations in the gills of the European chub (Leuciscus cephalus L.). Chemosphere, 69 (6). pp. 911-919. ISSN 0045-6535

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Abstract

The influence of the season and the biotic factors (age and gill mass) on metal and protein levels in the gill cytosol of the young chubs (2 and 3 years old) was studied in Sava River in autumn 2005 and spring 2006. The obtained results are the first reported cytosolic concentrations of five metals and proteins for the chub gills. The average levels in autumn and spring, respectively, for total cytosolic proteins were 11.2 and 19.9 mg mL-1, for Zn 6.3 and 10.3  g mL-1, for Fe 3.9 and 9.6  g mL-1, for Cu 68.4 and 79.0 ng mL-1, for Mn 55.0 and 63.5 ng mL-1, and for Cd 2.9 and 3.6 ng mL-1. The influence of the gill mass on both the protein and the metal levels was observed, but it was seasonally dependent. In autumn, positive correlations were obtained between the gill mass and four parameters (total proteins, Mn, Zn and Fe), and negative with Cu. Contrary, in spring, even negative correlations of total proteins and some metals with the gill mass were observed. The proposed explanation for the different dependence of metal levels on the gill mass in autumn and spring was the seasonal difference in feeding intensity and metabolic rate, with presumably faster metabolism and water filtration through gills in spring. This hypothesis was further supported by the statistically significantly higher concentrations of the total proteins, Zn and Fe, as well as the Fulton condition indices in the spring period.

Item Type: Article
Uncontrolled Keywords: bioindicator; fish; gill cytosol; metals; river
Subjects: NATURAL SCIENCES > Biology
NATURAL SCIENCES > Biology > Ecology
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions: Division for Marine and Enviromental Research
Projects:
Project titleProject leaderProject codeProject type
Stanične promjene u vodnih organizama pobuđene metalima[40333] Biserka Raspor098-0982934-2721MZOS
SAva RIver Basin : Sustainable Use, Managment and Protection of Resources - SARIBBiserka Raspor509160FP6
Depositing User: Zrinka Dragun
Date Deposited: 11 May 2015 14:52
Last Modified: 18 May 2015 10:44
URI: http://fulir.irb.hr/id/eprint/1893
DOI: 10.1016/j.chemosphere.2007.05.069

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