Article (Scientific journals)
Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex
Gismondi, Eric; Thomé, Jean-Pierre
2014In Environmental Pollution, 191, p. 119-125
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Abstract :
[en] Polybrominated diphenyl ethers (PBDEs) are abundant in aquatic environment. However, only few studies have investigated their impacts on freshwater invertebrates. This work aimed to study the effects of BDE-47 and BDE-99 congeners on the chitobiase and chitinolytic enzymes activities of the freshwater amphipod Gammarus pulex, according to gender, PBDE concentration and time of exposure. In addition, the bioaccumulation of BDE-47 and BDE-99 were measured. Results revealed that females have bioaccumulated more PBDE than males, and BDE-99 was more accumulated than BDE-47. PBDE exposures for 96hrs have caused chitobiase and chitinolytic enzymes inhibition. This study not only indicate the importance of taking into account various confounding factors (gender, congeners, concentration) to understand PBDE effects, but underline also disruptions of molting enzymes activities. These disturbances suggest effects on the gammarid development and reproduction, and consequently effects on the gammarid population, and on a larger scale, a dysfunction of the ecosystem.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Gismondi, Eric ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Ecologie animale et écotoxicologie
Thomé, Jean-Pierre ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Ecologie animale et écotoxicologie
Language :
English
Title :
Effects of two PBDE congeners on the moulting enzymes of the freshwater amphipod Gammarus pulex
Publication date :
2014
Journal title :
Environmental Pollution
ISSN :
0269-7491
eISSN :
1873-6424
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
191
Pages :
119-125
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 April 2014

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