|
|
|
|
|
Leboulanger, C; Bouvy, M; Pagano, M; Dufour, Robert; Got, P; Cecchi, P. |
This study focused on the effects of two pesticides, paraquat (herbicide) and deltamethrin (insecticide), which are two common molecules used intensively in Burkina Faso. Natural bacterial populations, phytoplankton cultures (one cyanobacterium, Cylindrospermopsis raciborskii, and one chlorophycea, Monoraphidium sp.), and two species of zooplankton (Diaphanosoma excisum and Moina micrura) were isolated from aquatic communities and were used as biological targets in the experimental protocols. Paraquat was moderately toxic to bacteria and phytoplankton, whereas deltamethrin was significantly toxic only to the zooplankton species. Paradoxically, the chlorophycea Monoraphidium sp. exhibited a significant increase of in vitro fluorescence after 48 h at the... |
Tipo: Text |
Palavras-chave: West Africa; Reservoirs; Planktonic organisms; Deltamethrin; Paraquat. |
Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-5287.pdf |
| |
|
| |
|
| |
|
| |
|
|
Assis,Helena Cristina da Silva de; Nicareta,Lilian; Salvo,Ligia Maria; Klemz,Claudio; Truppel,Jessé Henrique; Calegari,Rossana. |
This study aimed to determine the effect of sublethal doses of deltamethrin, using biochemical biomarkers as activities of cholinesterase (ChE), ethoxyresorufin-O-deethylase (EROD) and the Na+K+- ATPase and levels of total cytochrome P450 (CYP450). Fishes received sublethal doses of deltamethrin and were sacrificed after 96 h of exposure. Samples of gills, heart, brain, liver and muscle were collected for enzymatic analyses. Deltamethrin inhibited the activity of the gills and heart Na+ K+-ATPase, induced the liver total CYP450, as well as the liver EROD activity. The activity of the ChE was not inhibited by deltamethrin. Deltamethrin altered the hepatic metabolism and the normal ionic flux in Ancistrus multispinis. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Deltamethrin; Cytochrome P450; Fish; Ancistrus multispinis; Biomarker. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600012 |
| |
|
|
|