J 2016

Metallothionein modulation in relation to cadmium bioaccumulation and age-dependent sensitivity of Chironomus riparius larvae

TOUŠOVÁ, Zuzana, Jan KUTA, David HYNEK, Vojtěch ADAM, René KIZEK et. al.

Basic information

Original name

Metallothionein modulation in relation to cadmium bioaccumulation and age-dependent sensitivity of Chironomus riparius larvae

Authors

TOUŠOVÁ, Zuzana (203 Czech Republic, belonging to the institution), Jan KUTA (203 Czech Republic, belonging to the institution), David HYNEK (203 Czech Republic), Vojtěch ADAM (203 Czech Republic), René KIZEK (203 Czech Republic), Luděk BLÁHA (203 Czech Republic, belonging to the institution) and Klára HILSCHEROVÁ (203 Czech Republic, guarantor, belonging to the institution)

Edition

Environmental Science and Pollution Research, Landsberg, Germany, Ecomed, 2016, 0944-1344

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30304 Public and environmental health

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.741

RIV identification code

RIV/00216224:14310/16:00093481

Organization unit

Faculty of Science

UT WoS

000377021500018

Keywords in English

Chironomus; Artificial sediment; Cadmium; Bioaccumulation; Metallothionein

Tags

Tags

International impact, Reviewed
Změněno: 2/3/2017 12:23, Mgr. Michaela Hylsová, Ph.D.

Abstract

V originále

The goal of this study was to contribute to understanding of the mechanisms behind sensitivity differences between early and late instar larvae of Chironomus riparius and to address the influence of the differences in standard testing approaches on the toxicity evaluation. A 10-day contact sediment toxicity test was carried out to assess sensitivity to cadmium exposure in relation to different age and laboratory culture line origin of test organisms. Chironomid larvae of early (OECD 218 method) and late instar (US-EPA600/R-99/064 method) differed substantially in sensitivity of traditional endpoints (OECD: LOEC 50 and 10 mu g Cd/g dry weight (dw); US-EPA: LOEC > 1000 and 100 mu g Cd/g dw for survival and growth, respectively). Bioaccumulated cadmium and metallothioneins (MTs) concentrations were analyzed to investigate the role of MTs in reduced sensitivity to cadmium in late instar larvae. Metallothioneins were induced after treatment to greater Cd concentrations, but their levels in relation to cadmium body burdens did not fully explain low sensitivity of late instars to cadmium, which indicates some other effective way of detoxification in late instars. This study brings new information related to the role of MTs in age-dependent toxicant sensitivity and discusses the implications of divergence in data generated by chironomid sediment toxicity tests by standardized methods using different instars.

Links

LM2011028, research and development project
Name: RECETOX ? Národní infrastruktura pro výzkum toxických látek v prostředí
Investor: Ministry of Education, Youth and Sports of the CR
LO1214, research and development project
Name: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX)
Investor: Ministry of Education, Youth and Sports of the CR