Comparative study on two freshwater invertebrates for monitoring environmental lead exposure
Two freshwater invertebrate organisms, Biomphalaria glabrata and Lumbriculus variegatus, were tested as potential experimental animal models to assess Pb exposure using acute laboratory bioassays. Since long, the enzyme δ-aminolevulinic acid dehydratase (ALA-D) has been recognised as a useful biomar...
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2005
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0300483X_v210_n1_p45_Aisemberg http://hdl.handle.net/20.500.12110/paper_0300483X_v210_n1_p45_Aisemberg |
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paper:paper_0300483X_v210_n1_p45_Aisemberg2023-06-08T15:27:16Z Comparative study on two freshwater invertebrates for monitoring environmental lead exposure Bioindicators Biomarkers Biomphalaria glabrata Lumbriculus variegatus Pb δ-Aminolevulinic acid dehydratase biological marker fresh water lead porphobilinogen synthase animal tissue annelid worm aquatic environment article Biomphalaria blood level calculation comparative study comparative toxicology concentration (parameters) environmental monitoring enzyme activity enzyme inhibition gastropod invertebrate lumbriculus variegatus metal binding nonhuman priority journal soft tissue water contamination Animalia Biomphalaria glabrata Gastropoda Invertebrata Lumbriculus variegatus Oligochaeta (Metazoa) Two freshwater invertebrate organisms, Biomphalaria glabrata and Lumbriculus variegatus, were tested as potential experimental animal models to assess Pb exposure using acute laboratory bioassays. Since long, the enzyme δ-aminolevulinic acid dehydratase (ALA-D) has been recognised as a useful biomarker of Pb exposure and effect. Therefore, determinations of ALA-D activity were performed in the whole body soft tissues of pigmented and non-pigmented gastropods B. glabrata and in the oligochaete L. variegatus. The organisms were exposed to varying concentrations of Pb for 48 h. Levels of Pb in the invertebrates were also analysed. Highly significant negative correlations were found between the enzymatic activity and the levels of Pb exposure, and also between the enzymatic activity and the metal incorporated by the invertebrates. No significant differences were found in the enzyme activity nor in the resulting metal accumulation based on gastropod pigmentation. The values of Pb concentration that produce 50% of inhibition on the enzyme activity (EIC 50) were 0.023 and 0.029 mg Pb/L for pigmented and non-pigmented B. glabrata, respectively. A much higher value was found for L. variegatus (0.703 mg Pb/L). The non-observed effect concentration (NOEC) on enzyme activity for the oligochaetes was 0.05 mg Pb/L, about twice the EIC50 calculated for the gastropods. These data showed that both pigmented and non-pigmented B. glabata were much more sensitive organisms than the oligochaetes. The differences in enzyme inhibition could be attributed, at least partly, to differences in the metal body burden found between the organisms, since levels of Pb accumulated by B. glabrata were approximately three times higher compared to those observed in L. variegatus. Therefore B. glabrata showed to be a more suitable and reliable bioindicator organism for assessing Pb contamination in aquatic ecosystems, especially at low levels of metal exposure. © 2005 Elsevier Ireland Ltd. All rights reserved. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0300483X_v210_n1_p45_Aisemberg http://hdl.handle.net/20.500.12110/paper_0300483X_v210_n1_p45_Aisemberg |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Bioindicators Biomarkers Biomphalaria glabrata Lumbriculus variegatus Pb δ-Aminolevulinic acid dehydratase biological marker fresh water lead porphobilinogen synthase animal tissue annelid worm aquatic environment article Biomphalaria blood level calculation comparative study comparative toxicology concentration (parameters) environmental monitoring enzyme activity enzyme inhibition gastropod invertebrate lumbriculus variegatus metal binding nonhuman priority journal soft tissue water contamination Animalia Biomphalaria glabrata Gastropoda Invertebrata Lumbriculus variegatus Oligochaeta (Metazoa) |
| spellingShingle |
Bioindicators Biomarkers Biomphalaria glabrata Lumbriculus variegatus Pb δ-Aminolevulinic acid dehydratase biological marker fresh water lead porphobilinogen synthase animal tissue annelid worm aquatic environment article Biomphalaria blood level calculation comparative study comparative toxicology concentration (parameters) environmental monitoring enzyme activity enzyme inhibition gastropod invertebrate lumbriculus variegatus metal binding nonhuman priority journal soft tissue water contamination Animalia Biomphalaria glabrata Gastropoda Invertebrata Lumbriculus variegatus Oligochaeta (Metazoa) Comparative study on two freshwater invertebrates for monitoring environmental lead exposure |
| topic_facet |
Bioindicators Biomarkers Biomphalaria glabrata Lumbriculus variegatus Pb δ-Aminolevulinic acid dehydratase biological marker fresh water lead porphobilinogen synthase animal tissue annelid worm aquatic environment article Biomphalaria blood level calculation comparative study comparative toxicology concentration (parameters) environmental monitoring enzyme activity enzyme inhibition gastropod invertebrate lumbriculus variegatus metal binding nonhuman priority journal soft tissue water contamination Animalia Biomphalaria glabrata Gastropoda Invertebrata Lumbriculus variegatus Oligochaeta (Metazoa) |
| description |
Two freshwater invertebrate organisms, Biomphalaria glabrata and Lumbriculus variegatus, were tested as potential experimental animal models to assess Pb exposure using acute laboratory bioassays. Since long, the enzyme δ-aminolevulinic acid dehydratase (ALA-D) has been recognised as a useful biomarker of Pb exposure and effect. Therefore, determinations of ALA-D activity were performed in the whole body soft tissues of pigmented and non-pigmented gastropods B. glabrata and in the oligochaete L. variegatus. The organisms were exposed to varying concentrations of Pb for 48 h. Levels of Pb in the invertebrates were also analysed. Highly significant negative correlations were found between the enzymatic activity and the levels of Pb exposure, and also between the enzymatic activity and the metal incorporated by the invertebrates. No significant differences were found in the enzyme activity nor in the resulting metal accumulation based on gastropod pigmentation. The values of Pb concentration that produce 50% of inhibition on the enzyme activity (EIC 50) were 0.023 and 0.029 mg Pb/L for pigmented and non-pigmented B. glabrata, respectively. A much higher value was found for L. variegatus (0.703 mg Pb/L). The non-observed effect concentration (NOEC) on enzyme activity for the oligochaetes was 0.05 mg Pb/L, about twice the EIC50 calculated for the gastropods. These data showed that both pigmented and non-pigmented B. glabata were much more sensitive organisms than the oligochaetes. The differences in enzyme inhibition could be attributed, at least partly, to differences in the metal body burden found between the organisms, since levels of Pb accumulated by B. glabrata were approximately three times higher compared to those observed in L. variegatus. Therefore B. glabrata showed to be a more suitable and reliable bioindicator organism for assessing Pb contamination in aquatic ecosystems, especially at low levels of metal exposure. © 2005 Elsevier Ireland Ltd. All rights reserved. |
| title |
Comparative study on two freshwater invertebrates for monitoring environmental lead exposure |
| title_short |
Comparative study on two freshwater invertebrates for monitoring environmental lead exposure |
| title_full |
Comparative study on two freshwater invertebrates for monitoring environmental lead exposure |
| title_fullStr |
Comparative study on two freshwater invertebrates for monitoring environmental lead exposure |
| title_full_unstemmed |
Comparative study on two freshwater invertebrates for monitoring environmental lead exposure |
| title_sort |
comparative study on two freshwater invertebrates for monitoring environmental lead exposure |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0300483X_v210_n1_p45_Aisemberg http://hdl.handle.net/20.500.12110/paper_0300483X_v210_n1_p45_Aisemberg |
| _version_ |
1768544818471895040 |