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Göteborgs universitets publikationer

The toxicity of the three antifouling biocides DCOIT, TPBP and medetomidine to the marine pelagic copepod Acartia tonsa

Författare och institution:
Ida Wendt (-); Thomas Backhaus (Institutionen för biologi och miljövetenskap); Hans Blanck (Institutionen för biologi och miljövetenskap); Åsa Arrhenius (Institutionen för biologi och miljövetenskap)
Publicerad i:
Ecotoxicology, 25 ( 5 ) s. 871-879
ISSN:
0963-9292
E-ISSN:
1573-3017
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2016
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
© 2016 Springer Science+Business Media New York Copepods, the largest group of pelagic grazers, are at risk from exposure to antifouling biocides. This study investigated the toxicity of the antifouling biocides 4,5-dichloro-2-octyl-1,2-thiazol-3(2H)-one (DCOIT), triphenylborane pyridine (TPBP) and 4-[1-(2,3-dimethylphenyl)ethyl]-1H-imidazole (medetomidine) to the copepod Acartia tonsa, using mortality and egg production as endpoints. The toxicity ranking for mortality was as follows: DCOIT (LC50 57 nmol l−1) = TPBP (LC50 56 nmol l−1) > medetomidine (LC50 241 nmol l−1). Egg production was more sensitive than mortality to TPBP (EC50 3.2 nmol l−1), while DCOIT and medetomidine inhibited egg production at roughly the same concentrations (72 and 186 nmol l−1 respectively). Furthermore, TPBP seems to affect egg hatching directly which was not the case for DCOIT and medetomidine. DCOIT and medetomidine might pose an environmental risk as they have been reported to occur in different exposure scenarios or analytical surveys at concentrations only 2–3 times lower than the respective EC10. Reported environmental concentrations of TPBP are few but clearly lower than the EC10 values reported here, suggesting current risk of TPBP to copepods to be moderate.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Geovetenskap och miljövetenskap ->
Miljövetenskap ->
Miljökemi ->
Miljötoxikologi
NATURVETENSKAP ->
Biologiska vetenskaper
NATURVETENSKAP ->
Biologiska vetenskaper ->
Zoologi
NATURVETENSKAP ->
Annan naturvetenskap
Nyckelord:
Antifoulant , Egg production and hatching , Endpoint sensitivity , Lethality , Sublethal effects , Zooplankton
Postens nummer:
235700
Posten skapad:
2016-04-30 13:16
Posten ändrad:
2016-06-20 11:22

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