Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp.
The discus fish Symphysodon sp. is an Amazonian cichlid with a unusual form of parental care where fry obligately feed from parental mucus for the first few weeks of life. Here, we investigated the possible impact of environmental cadmium on this species, particularly with respect to mucus contamina...
| Autor principal: | Maunder, Richard J. |
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| Outros Autores: | Buckley, Jonathan, Val, Adalberto Luis, Sloman, Katherine A. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Aquatic Toxicology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18194 |
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oai:repositorio:1-18194 |
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oai:repositorio:1-18194 Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp. Maunder, Richard J. Buckley, Jonathan Val, Adalberto Luis Sloman, Katherine A. Adenosine Triphosphatase Cadmium Bioaccumulation Cadmium Concentration (composition) Diet Feeding Mucus Animals Experiment Animals Tissue Bioaccumulation Cichlid Controlled Study Environmental Impact Enzyme Activity Fluid Intake Food Intake Intestines Kidney Nonhuman Pollution Priority Journal Symphysodon Toxicokinetics Adenosine Triphosphatases Animal Cadmium Cichlids Diet Epidermis Gills Mucus Sodium-potassium-exchanging Atpase Water Pollutants, Chemical Amazonia Cichlidae Symphysodon The discus fish Symphysodon sp. is an Amazonian cichlid with a unusual form of parental care where fry obligately feed from parental mucus for the first few weeks of life. Here, we investigated the possible impact of environmental cadmium on this species, particularly with respect to mucus contamination. We exposed groups of fish to cadmium either through their food (400mgkg-1) or through the water (3μgl-1) for 4weeks, and measured tissue concentrations and ATPase activities at weekly intervals. Cadmium significantly accumulated in all tissues (except for muscle) after 7days, and tissue concentrations increased until the end of the experiment. Significant alterations in ATPase activities of intestine and kidney were observed at day 7 and 14, but no alterations in gill ATPase activities occurred. The epidermal mucus showed a high accumulation of cadmium from both exposures, but particularly from the diet, indicating that dietary cadmium can be transferred from gut to mucus. Combining this data with approximations of fry bite volumes and bite frequencies, we constructed daily estimates of the cadmium that could potentially be consumed by newly hatched fry feeding on this mucus. These calculations suggest that feeding fry might consume up to 11μgg-1day-1, and hence indicate that this species' dependency on parental mucus feeding of fry could make them particularly susceptible to cadmium contamination of their native habitat. © 2011 Elsevier B.V. 2020-06-15T21:52:29Z 2020-06-15T21:52:29Z 2011 Artigo https://repositorio.inpa.gov.br/handle/1/18194 10.1016/j.aquatox.2011.03.005 en Volume 103, Número 3-4, Pags. 205-212 Restrito Aquatic Toxicology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Adenosine Triphosphatase Cadmium Bioaccumulation Cadmium Concentration (composition) Diet Feeding Mucus Animals Experiment Animals Tissue Bioaccumulation Cichlid Controlled Study Environmental Impact Enzyme Activity Fluid Intake Food Intake Intestines Kidney Nonhuman Pollution Priority Journal Symphysodon Toxicokinetics Adenosine Triphosphatases Animal Cadmium Cichlids Diet Epidermis Gills Mucus Sodium-potassium-exchanging Atpase Water Pollutants, Chemical Amazonia Cichlidae Symphysodon |
| spellingShingle |
Adenosine Triphosphatase Cadmium Bioaccumulation Cadmium Concentration (composition) Diet Feeding Mucus Animals Experiment Animals Tissue Bioaccumulation Cichlid Controlled Study Environmental Impact Enzyme Activity Fluid Intake Food Intake Intestines Kidney Nonhuman Pollution Priority Journal Symphysodon Toxicokinetics Adenosine Triphosphatases Animal Cadmium Cichlids Diet Epidermis Gills Mucus Sodium-potassium-exchanging Atpase Water Pollutants, Chemical Amazonia Cichlidae Symphysodon Maunder, Richard J. Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp. |
| topic_facet |
Adenosine Triphosphatase Cadmium Bioaccumulation Cadmium Concentration (composition) Diet Feeding Mucus Animals Experiment Animals Tissue Bioaccumulation Cichlid Controlled Study Environmental Impact Enzyme Activity Fluid Intake Food Intake Intestines Kidney Nonhuman Pollution Priority Journal Symphysodon Toxicokinetics Adenosine Triphosphatases Animal Cadmium Cichlids Diet Epidermis Gills Mucus Sodium-potassium-exchanging Atpase Water Pollutants, Chemical Amazonia Cichlidae Symphysodon |
| description |
The discus fish Symphysodon sp. is an Amazonian cichlid with a unusual form of parental care where fry obligately feed from parental mucus for the first few weeks of life. Here, we investigated the possible impact of environmental cadmium on this species, particularly with respect to mucus contamination. We exposed groups of fish to cadmium either through their food (400mgkg-1) or through the water (3μgl-1) for 4weeks, and measured tissue concentrations and ATPase activities at weekly intervals. Cadmium significantly accumulated in all tissues (except for muscle) after 7days, and tissue concentrations increased until the end of the experiment. Significant alterations in ATPase activities of intestine and kidney were observed at day 7 and 14, but no alterations in gill ATPase activities occurred. The epidermal mucus showed a high accumulation of cadmium from both exposures, but particularly from the diet, indicating that dietary cadmium can be transferred from gut to mucus. Combining this data with approximations of fry bite volumes and bite frequencies, we constructed daily estimates of the cadmium that could potentially be consumed by newly hatched fry feeding on this mucus. These calculations suggest that feeding fry might consume up to 11μgg-1day-1, and hence indicate that this species' dependency on parental mucus feeding of fry could make them particularly susceptible to cadmium contamination of their native habitat. © 2011 Elsevier B.V. |
| format |
Artigo |
| author |
Maunder, Richard J. |
| author2 |
Buckley, Jonathan Val, Adalberto Luis Sloman, Katherine A. |
| author2Str |
Buckley, Jonathan Val, Adalberto Luis Sloman, Katherine A. |
| title |
Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp. |
| title_short |
Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp. |
| title_full |
Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp. |
| title_fullStr |
Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp. |
| title_full_unstemmed |
Accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish Symphysodon sp. |
| title_sort |
accumulation of dietary and aqueous cadmium into the epidermal mucus of the discus fish symphysodon sp. |
| publisher |
Aquatic Toxicology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18194 |
| _version_ |
1787141068822675456 |
| score |
11.755432 |