The Experts below are selected from a list of 5673 Experts worldwide ranked by ideXlab platform
Evaldo Luiz Gaeta Espindola - One of the best experts on this subject based on the ideXlab platform.
-
bioaccumulation and chronic toxicity of arsenic and zinc in the aquatic oligochaetes branchiura sowerbyi and tubifex tubifex annelida clitellata
Aquatic Toxicology, 2021Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Pilar Rodriguez, Evaldo Luiz Gaeta EspindolaAbstract:Abstract Oligochaetes feed on bulk sediment and penetrate the sediment through the construction of burrows, making them especially vulnerable to sediment metal contamination. However, the few oligochaete species that have been tested to date are almost exclusively temperate test species. Although the warmwater adapted species Branchiura sowerbyi has been indicated as a promising candidate for tropical sediment toxicity testing, few (especially chronic) studies have been conducted so far to confirm this. Therefore, the aim of the present study was to evaluate the bioaccumulation and chronic 28d lethal and sublethal toxicity of arsenic (As) and zinc (Zn) to both the warmwater-adapted B. sowerbyi and the coldwater-adapted oligochaete Tubifex tubifex for comparison. Arsenic was more toxic to both oligochaete species than Zn. Inter- and intra-species variability in toxicity values of the two test species and other benthic invertebrates was within an order of magnitude. However, B. sowerbyi was the most sensitive species to As even for sediment concentration (EC50: 36.6 ± 2.1 µg/g and 147.1 ± 21.7 µg/g, for B. sowerbyi and T. tubifex, respectively) and for tissue concentration (ER50: 9.2 ± 0.9 µg/g and 887.0 ± 35.0 µg/g, for B. sowerbyi and T. tubifex, respectively). Finally, the Tissue Residue-effects Approach (TRA) using Effective Tissue Residues appears to be a promising way forward in advancing in this since it considers internal body concentrations.
-
acute toxicity of zinc and arsenic to the warmwater aquatic oligochaete branchiura sowerbyi as compared to its coldwater counterpart tubifex tubifex annelida clitellata
Journal of Soils and Sediments, 2016Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Evaldo Luiz Gaeta EspindolaAbstract:Purpose This study aimed at evaluating the acute effects of arsenic and zinc to the warmwater aquatic oligochaete Branchiura sowerbyi. Relative sensitivity with the coldwater species Tubifex tubifex was compared. Implications for the use of B. sowerbyi in the risk assessment of sediments in the tropics are discussed.
-
branchiura sowerbyi beddard 1892 Oligochaeta naididae as a test species in ecotoxicology bioassays a review
Zoosymposia, 2014Co-Authors: Haroldo Lobo, Evaldo Luiz Gaeta EspindolaAbstract:Branchiura sowerbyi (Oligochaeta; Naididae; Rhyacodrilinae) is an oligochaete with great potential to be used as a test-species in toxicology bioassays. Since 1950, its life cycle has been studied and nowadays it is well described in the literature. B. sowerbyi has a cosmopolitan distribution and can be found in places where Tubifex tubifex (normally used in toxicity bioassays) does not occur, especially in tropical regions. Due to its high individual biomass, B. sowerbyi is suitable for use in bioaccumulation bioassays. The present study reviews papers that have used this species in toxicology bioassays and were published between 1950 and the first semester of 2012. In the first part, a brief overview is provided of the biology and the life-cycle parameters of B. sowerbyi. In the second part, the bioassays are presented and discussed, and in the third and last part, conclusions about research to date and perspectives about future studies are presented. Throughout the investigation, it was possible to find a total of 30 papers that tested approximately 65 different substances (insecticides, metals, industrial chemicals and others). The majority of the bioassays run are 96-h acute water-only tests, only five were chronic bioassays and two involved bioaccumulation. The lack of research and the small number of tested substances in comparison with the standardized T. tubifex species (i.e. approximately 9 and 44 tested metals for B. sowerbyi and T. tubifex , respectively) can be explained by the absence of a bioassay protocol for B. sowerbyi , causing researchers to choose other species. It is necessary to undertake more methodological research in order to find a better and common methodology for bioassays.
Haroldo Lobo - One of the best experts on this subject based on the ideXlab platform.
-
bioaccumulation and chronic toxicity of arsenic and zinc in the aquatic oligochaetes branchiura sowerbyi and tubifex tubifex annelida clitellata
Aquatic Toxicology, 2021Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Pilar Rodriguez, Evaldo Luiz Gaeta EspindolaAbstract:Abstract Oligochaetes feed on bulk sediment and penetrate the sediment through the construction of burrows, making them especially vulnerable to sediment metal contamination. However, the few oligochaete species that have been tested to date are almost exclusively temperate test species. Although the warmwater adapted species Branchiura sowerbyi has been indicated as a promising candidate for tropical sediment toxicity testing, few (especially chronic) studies have been conducted so far to confirm this. Therefore, the aim of the present study was to evaluate the bioaccumulation and chronic 28d lethal and sublethal toxicity of arsenic (As) and zinc (Zn) to both the warmwater-adapted B. sowerbyi and the coldwater-adapted oligochaete Tubifex tubifex for comparison. Arsenic was more toxic to both oligochaete species than Zn. Inter- and intra-species variability in toxicity values of the two test species and other benthic invertebrates was within an order of magnitude. However, B. sowerbyi was the most sensitive species to As even for sediment concentration (EC50: 36.6 ± 2.1 µg/g and 147.1 ± 21.7 µg/g, for B. sowerbyi and T. tubifex, respectively) and for tissue concentration (ER50: 9.2 ± 0.9 µg/g and 887.0 ± 35.0 µg/g, for B. sowerbyi and T. tubifex, respectively). Finally, the Tissue Residue-effects Approach (TRA) using Effective Tissue Residues appears to be a promising way forward in advancing in this since it considers internal body concentrations.
-
acute toxicity of zinc and arsenic to the warmwater aquatic oligochaete branchiura sowerbyi as compared to its coldwater counterpart tubifex tubifex annelida clitellata
Journal of Soils and Sediments, 2016Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Evaldo Luiz Gaeta EspindolaAbstract:Purpose This study aimed at evaluating the acute effects of arsenic and zinc to the warmwater aquatic oligochaete Branchiura sowerbyi. Relative sensitivity with the coldwater species Tubifex tubifex was compared. Implications for the use of B. sowerbyi in the risk assessment of sediments in the tropics are discussed.
-
Branchiura sowerbyi Beddard, 1892 (Oligochaeta: Naididae) as a test species in ecotoxicology bioassays: a review
2015Co-Authors: Haroldo Lobo, Evaldo L. G. EspindolaAbstract:Branchiura sowerbyi (Oligochaeta; Naididae; Rhyacodrilinae) is an oligochaete with great potential to be used as a test-species in toxicology bioassays. Since 1950, its life cycle has been studied and nowadays it is well described in the literature. B. sowerbyi has a cosmopolitan distribution and can be found in places where Tubifex tubifex (normally used in toxicity bioassays) does not occur, especially in tropical regions. Due to its high individual biomass, B. sowerbyi is suitable for use in bioaccumulation bioassays. The present study reviews papers that have used this species in toxicology bioassays and were published between 1950 and the first semester of 2012. In the first part, a brief overview is provided of the biology and the life-cycle parameters of B. sowerbyi. In the second part, the bioassays are presented and discussed, and in the third and last part, conclusions about research to date and perspectives about future studies are presented. Throughout the investigation, it was possible to find a total of 30 papers that tested approximately 65 different substances (insecticides, metals, industrial chemicals and others). The majority of the bioassays run are 96-h acute water-only tests, only five were chronic bioassays and two involved bioaccumulation. The lack of research and the small number of tested substances in comparison with the standardized T. tubifex species (i.e. approximately 9 and 44 tested metals for B. sowerbyi and T. tubifex, respectively) can be explained by the absence of a bioassay protocol for B. sowerbyi, causing researchers to choose other species. It is necessary to undertake more methodological research in order to find a bette
-
branchiura sowerbyi beddard 1892 Oligochaeta naididae as a test species in ecotoxicology bioassays a review
Zoosymposia, 2014Co-Authors: Haroldo Lobo, Evaldo Luiz Gaeta EspindolaAbstract:Branchiura sowerbyi (Oligochaeta; Naididae; Rhyacodrilinae) is an oligochaete with great potential to be used as a test-species in toxicology bioassays. Since 1950, its life cycle has been studied and nowadays it is well described in the literature. B. sowerbyi has a cosmopolitan distribution and can be found in places where Tubifex tubifex (normally used in toxicity bioassays) does not occur, especially in tropical regions. Due to its high individual biomass, B. sowerbyi is suitable for use in bioaccumulation bioassays. The present study reviews papers that have used this species in toxicology bioassays and were published between 1950 and the first semester of 2012. In the first part, a brief overview is provided of the biology and the life-cycle parameters of B. sowerbyi. In the second part, the bioassays are presented and discussed, and in the third and last part, conclusions about research to date and perspectives about future studies are presented. Throughout the investigation, it was possible to find a total of 30 papers that tested approximately 65 different substances (insecticides, metals, industrial chemicals and others). The majority of the bioassays run are 96-h acute water-only tests, only five were chronic bioassays and two involved bioaccumulation. The lack of research and the small number of tested substances in comparison with the standardized T. tubifex species (i.e. approximately 9 and 44 tested metals for B. sowerbyi and T. tubifex , respectively) can be explained by the absence of a bioassay protocol for B. sowerbyi , causing researchers to choose other species. It is necessary to undertake more methodological research in order to find a better and common methodology for bioassays.
Maite Martinezmadrid - One of the best experts on this subject based on the ideXlab platform.
-
bioaccumulation and chronic toxicity of arsenic and zinc in the aquatic oligochaetes branchiura sowerbyi and tubifex tubifex annelida clitellata
Aquatic Toxicology, 2021Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Pilar Rodriguez, Evaldo Luiz Gaeta EspindolaAbstract:Abstract Oligochaetes feed on bulk sediment and penetrate the sediment through the construction of burrows, making them especially vulnerable to sediment metal contamination. However, the few oligochaete species that have been tested to date are almost exclusively temperate test species. Although the warmwater adapted species Branchiura sowerbyi has been indicated as a promising candidate for tropical sediment toxicity testing, few (especially chronic) studies have been conducted so far to confirm this. Therefore, the aim of the present study was to evaluate the bioaccumulation and chronic 28d lethal and sublethal toxicity of arsenic (As) and zinc (Zn) to both the warmwater-adapted B. sowerbyi and the coldwater-adapted oligochaete Tubifex tubifex for comparison. Arsenic was more toxic to both oligochaete species than Zn. Inter- and intra-species variability in toxicity values of the two test species and other benthic invertebrates was within an order of magnitude. However, B. sowerbyi was the most sensitive species to As even for sediment concentration (EC50: 36.6 ± 2.1 µg/g and 147.1 ± 21.7 µg/g, for B. sowerbyi and T. tubifex, respectively) and for tissue concentration (ER50: 9.2 ± 0.9 µg/g and 887.0 ± 35.0 µg/g, for B. sowerbyi and T. tubifex, respectively). Finally, the Tissue Residue-effects Approach (TRA) using Effective Tissue Residues appears to be a promising way forward in advancing in this since it considers internal body concentrations.
-
acute toxicity of zinc and arsenic to the warmwater aquatic oligochaete branchiura sowerbyi as compared to its coldwater counterpart tubifex tubifex annelida clitellata
Journal of Soils and Sediments, 2016Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Evaldo Luiz Gaeta EspindolaAbstract:Purpose This study aimed at evaluating the acute effects of arsenic and zinc to the warmwater aquatic oligochaete Branchiura sowerbyi. Relative sensitivity with the coldwater species Tubifex tubifex was compared. Implications for the use of B. sowerbyi in the risk assessment of sediments in the tropics are discussed.
Michiel A Daam - One of the best experts on this subject based on the ideXlab platform.
-
bioaccumulation and chronic toxicity of arsenic and zinc in the aquatic oligochaetes branchiura sowerbyi and tubifex tubifex annelida clitellata
Aquatic Toxicology, 2021Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Pilar Rodriguez, Evaldo Luiz Gaeta EspindolaAbstract:Abstract Oligochaetes feed on bulk sediment and penetrate the sediment through the construction of burrows, making them especially vulnerable to sediment metal contamination. However, the few oligochaete species that have been tested to date are almost exclusively temperate test species. Although the warmwater adapted species Branchiura sowerbyi has been indicated as a promising candidate for tropical sediment toxicity testing, few (especially chronic) studies have been conducted so far to confirm this. Therefore, the aim of the present study was to evaluate the bioaccumulation and chronic 28d lethal and sublethal toxicity of arsenic (As) and zinc (Zn) to both the warmwater-adapted B. sowerbyi and the coldwater-adapted oligochaete Tubifex tubifex for comparison. Arsenic was more toxic to both oligochaete species than Zn. Inter- and intra-species variability in toxicity values of the two test species and other benthic invertebrates was within an order of magnitude. However, B. sowerbyi was the most sensitive species to As even for sediment concentration (EC50: 36.6 ± 2.1 µg/g and 147.1 ± 21.7 µg/g, for B. sowerbyi and T. tubifex, respectively) and for tissue concentration (ER50: 9.2 ± 0.9 µg/g and 887.0 ± 35.0 µg/g, for B. sowerbyi and T. tubifex, respectively). Finally, the Tissue Residue-effects Approach (TRA) using Effective Tissue Residues appears to be a promising way forward in advancing in this since it considers internal body concentrations.
-
acute toxicity of zinc and arsenic to the warmwater aquatic oligochaete branchiura sowerbyi as compared to its coldwater counterpart tubifex tubifex annelida clitellata
Journal of Soils and Sediments, 2016Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Evaldo Luiz Gaeta EspindolaAbstract:Purpose This study aimed at evaluating the acute effects of arsenic and zinc to the warmwater aquatic oligochaete Branchiura sowerbyi. Relative sensitivity with the coldwater species Tubifex tubifex was compared. Implications for the use of B. sowerbyi in the risk assessment of sediments in the tropics are discussed.
Leire Mendezfernandez - One of the best experts on this subject based on the ideXlab platform.
-
bioaccumulation and chronic toxicity of arsenic and zinc in the aquatic oligochaetes branchiura sowerbyi and tubifex tubifex annelida clitellata
Aquatic Toxicology, 2021Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Pilar Rodriguez, Evaldo Luiz Gaeta EspindolaAbstract:Abstract Oligochaetes feed on bulk sediment and penetrate the sediment through the construction of burrows, making them especially vulnerable to sediment metal contamination. However, the few oligochaete species that have been tested to date are almost exclusively temperate test species. Although the warmwater adapted species Branchiura sowerbyi has been indicated as a promising candidate for tropical sediment toxicity testing, few (especially chronic) studies have been conducted so far to confirm this. Therefore, the aim of the present study was to evaluate the bioaccumulation and chronic 28d lethal and sublethal toxicity of arsenic (As) and zinc (Zn) to both the warmwater-adapted B. sowerbyi and the coldwater-adapted oligochaete Tubifex tubifex for comparison. Arsenic was more toxic to both oligochaete species than Zn. Inter- and intra-species variability in toxicity values of the two test species and other benthic invertebrates was within an order of magnitude. However, B. sowerbyi was the most sensitive species to As even for sediment concentration (EC50: 36.6 ± 2.1 µg/g and 147.1 ± 21.7 µg/g, for B. sowerbyi and T. tubifex, respectively) and for tissue concentration (ER50: 9.2 ± 0.9 µg/g and 887.0 ± 35.0 µg/g, for B. sowerbyi and T. tubifex, respectively). Finally, the Tissue Residue-effects Approach (TRA) using Effective Tissue Residues appears to be a promising way forward in advancing in this since it considers internal body concentrations.
-
acute toxicity of zinc and arsenic to the warmwater aquatic oligochaete branchiura sowerbyi as compared to its coldwater counterpart tubifex tubifex annelida clitellata
Journal of Soils and Sediments, 2016Co-Authors: Haroldo Lobo, Leire Mendezfernandez, Maite Martinezmadrid, Michiel A Daam, Evaldo Luiz Gaeta EspindolaAbstract:Purpose This study aimed at evaluating the acute effects of arsenic and zinc to the warmwater aquatic oligochaete Branchiura sowerbyi. Relative sensitivity with the coldwater species Tubifex tubifex was compared. Implications for the use of B. sowerbyi in the risk assessment of sediments in the tropics are discussed.
