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Early life stage toxicity of extracts from the African fish poison plants Tephrosia vogelii Hook. f. and Asystasia vogeliana Benth. on zebrafish embryos
Author(s) -
Ekanem A. P.,
Meinelt T.,
Kloas W.,
Knopf K.
Publication year - 2004
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2004.00464.x
Subject(s) - biology , danio , hook , toxicity , larva , embryo , fish <actinopterygii> , botany , zebrafish , fishery , medicine , biochemistry , structural engineering , engineering , gene
Embryos of Danio rerio are highly susceptible to extracts of the plants Tephrosia vogelii and Asystasia vogeliana . The concentration of the dried extracts at which 50% of the embryos were affected (EC 50 ) after 24 h exposure were 320 and 572 μg l −1 , respectively; corresponding 50% mortality (LC 50 ) values after 48 h exposure were 493 and 869 μg l −1 . Results indicate that the use of these ichthyotoxic plants might have a severe impact on the survival of fish larvae in the field.