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@article{933176,
author = {Wenger, Michael and Ondračková, Markéta and Machala, Miroslav and Neča, Jiří and Hyršl, Pavel and Vetešníková Šimková, Andrea and Jurajda, Pavel and von der Ohe, Peter and Segner, Helmut},
article_location = {PENSACOLA,},
article_number = {2},
keywords = {Multiple stressors; Environmental risk assessment; Exposure biomarkers; Parasites; Fish health},
language = {eng},
issn = {0730-7268},
journal = {Environmental Toxicology and Chemistry},
title = {ASSESSING RELATIONSHIPS BETWEEN CHEMICAL EXPOSURE, PARASITE INFECTION, FISH HEALTH, AND FISH ECOLOGICAL STATUS: A CASE STUDY USING CHUB (LEUCISCUS CEPHALUS) IN THE BILINA RIVER, CZECH REPUBLIC},
volume = {29},
year = {2010}
}
TY - JOUR
ID - 933176
AU - Wenger, Michael - Ondračková, Markéta - Machala, Miroslav - Neča, Jiří - Hyršl, Pavel - Vetešníková Šimková, Andrea - Jurajda, Pavel - von der Ohe, Peter - Segner, Helmut
PY - 2010
TI - ASSESSING RELATIONSHIPS BETWEEN CHEMICAL EXPOSURE, PARASITE INFECTION, FISH HEALTH, AND FISH ECOLOGICAL STATUS: A CASE STUDY USING CHUB (LEUCISCUS CEPHALUS) IN THE BILINA RIVER, CZECH REPUBLIC
JF - Environmental Toxicology and Chemistry
VL - 29
IS - 2
SP - 453-466
EP - 453-466
PB - SETAC PRESS, 1010 N 12TH AVE, PENSACOLA,
SN - 07307268
KW - Multiple stressors
KW - Environmental risk assessment
KW - Exposure biomarkers
KW - Parasites
KW - Fish health
N2 - Multiple stressor scenarios, as they are relevant in many watersheds, call for approaches extending beyond conventional chemical-focused approaches. The present study, investigated the fish population, represented by chub (Leuciscus cephalus), in the Bilina River (Czech Republic), which is impacted by various pollution sources and might pose a fisk on the fish population. To confirm or reject this hypothesis, it was examined whether there exists an association between abundance of chub and exposure to toxic chemicals as well as natural stressors, represented by parasites, and whether health-related suborganismal traits, namely, organ indices, tissue histopathology, and immune parameters, would help in revealing relationships between stressor impact and population status. Toxic pressure was assessed by the toxic unit approach, which gives an integrative estimate of toxic effect concentrations and by measuring the biomarkers cytochrome P4501A and vitellogenin, which indicate exposure to bioavailable arylhydrocarbon-or estrogen receptor ligands. Parasite pressure was estimated by determining abundance and species composition of ecto- and endoparasites of chub. Chub abundance was high upstream in the Bilina, low to zero in the middle stretches, and increased again downstream. Toxic pressure increased in the downstream direction, while parasite intensity decreased in this direction. Health status of chub did not differ clearly between up-, middle-, and downstream sites. Thus, it appears that neither toxic pressure nor parasite pressure nor their combination translates into a change of chub health status' By using varied assessment tools, this study provides evidence against a presumed causative role of toxicants impairing the fish ecological status of the Bilina River
ER -
WENGER, Michael, Markéta ONDRAČKOVÁ, Miroslav MACHALA, Jiří NEČA, Pavel HYRŠL, Andrea VETEŠNÍKOVÁ ŠIMKOVÁ, Pavel JURAJDA, Peter VON DER OHE a Helmut SEGNER. ASSESSING RELATIONSHIPS BETWEEN CHEMICAL EXPOSURE, PARASITE INFECTION, FISH HEALTH, AND FISH ECOLOGICAL STATUS: A CASE STUDY USING CHUB (LEUCISCUS CEPHALUS) IN THE BILINA RIVER, CZECH REPUBLIC. \textit{Environmental Toxicology and Chemistry}. PENSACOLA,: SETAC PRESS, 1010 N 12TH AVE, PENSACOLA,, 2010, roč.~29, č.~2, s.~453-466. ISSN~0730-7268.
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