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Influence of biotic and abiotic factors on metallothionein level in Gammarus pulex
- Source :
- Comparative Biochemistry and Physiology-Part C: Toxicology and Pharmacology, Comparative Biochemistry and Physiology-Part C: Toxicology and Pharmacology, Elsevier, 2007, 145, pp.632-640
- Publication Year :
- 2007
- Publisher :
- Elsevier BV, 2007.
-
Abstract
- International audience; Detection and assessment of the impact of pollution on biological resources imply increasing research on early-warning markers such as metallothioneins in metal exposure. Metallothioneins are cytosolic, low-molecular-weight proteins, involved principally in essential metal homeostasis and non-essential metal detoxication. Metallothionein synthesis could be influenced by abiotic (season) or biotic (reproduction process) factors directly or indirectly by its effect on metal bio-accumulation (i.e., sex, weight). In view of using metallothioneins as metal-exposure biomarkers in Gammarus pulex, this study attempts to define the effect of several factors (sex, weight/size and season) on the level of this protein. Metallothionein levels recorded in individuals over a large range of weights indicate a negative correlation between them. Inversely in our conditions, no difference was observed between male and female organisms. During field study, metallothionein level changes were observed with the highest levels in autumn and winter periods. The highest metallothionein levels were observed after the reproduction period, perhaps with the metabolic needs of biologically available essential metal such as zinc.
- Subjects :
- Male
[SDE] Environmental Sciences
0106 biological sciences
CEMAGREF
Physiology
Health, Toxicology and Mutagenesis
Period (gene)
media_common.quotation_subject
Zoology
010501 environmental sciences
Toxicology
01 natural sciences
Biochemistry
Detoxication
Sex Factors
Biomonitoring
Animals
Metallothionein
Amphipoda
0105 earth and related environmental sciences
media_common
Abiotic component
biology
Ecology
010604 marine biology & hydrobiology
Body Weight
BELY
Cell Biology
General Medicine
ECO
biology.organism_classification
Gammarus pulex
Bioaccumulation
[SDE]Environmental Sciences
Female
Seasons
Reproduction
Copper
Cadmium
Environmental Monitoring
Subjects
Details
- ISSN :
- 15320456
- Volume :
- 145
- Database :
- OpenAIRE
- Journal :
- Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology
- Accession number :
- edsair.doi.dedup.....4706551958e3437691da7eab2b1fad9b