Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments
Selenium (Se) is an essential nutrient and the chemical forms of Se present in food affect both its bioavailability and its toxicity. The aim of this study was to evaluate the effects of the rotifer enrichment with three sources of selenium supplementation: selenite (Se(IV)), selenomethionine (SeMet...
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ftieo:oai:repositorio.ieo.es:10508/14528 2023-06-11T04:17:38+02:00 Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments Peña, M. (Marian) Giráldez, Inmaculada Calero, Sandra Ruiz-Azcona, P. (Paz) Morales, Emilio Fernández-Díaz, Catalina Hachero-Cruzado, I. (Ismael) 2018 http://hdl.handle.net/10508/14528 https://doi.org/10.1016/j.aquaculture.2017.10.040 eng eng Elsevier BV Sede Central IEO 0044-8486 http://hdl.handle.net/10508/14528 doi:10.1016/j.aquaculture.2017.10.040 closed access Rotifers Copepods Enrichments Selenium speciation Toxicity research article 2018 ftieo https://doi.org/10.1016/j.aquaculture.2017.10.040 2023-05-02T23:49:24Z Selenium (Se) is an essential nutrient and the chemical forms of Se present in food affect both its bioavailability and its toxicity. The aim of this study was to evaluate the effects of the rotifer enrichment with three sources of selenium supplementation: selenite (Se(IV)), selenomethionine (SeMet) and selenized yeast (SelPlex). For this purpose, rotifers were exposed to each source of selenium at two concentrations during 6 days (2 culture cycles of 3 days). The toxicity order for the three sources of Se was SelPlex > SeMet > Se(IV). Modelling calculations showed that SeMet and Selplex uptake followed a first-order kinetic model. Nevertheless, uptake of Se(IV) displayed a linear pattern with increasing exposure time. Speciation data revealed that the predominant form in rotifers was SeMet. Indeed, rotifers metabolized and chemically transformed Se(IV) into SeMet. If the source of Se assayed is Se(IV), rotifers with Se levels similar to those in copepods and high content of SeMet can be accomplished when they are exposed to 2 mg of Se per million rotifers for 12 h. For SeMet and SelPlex treatments, 0.2 mg of Se per million rotifers in 3 and 6 h, respectively, were required. Article in Journal/Newspaper Copepods Rotifer Instituto Español de Oceanografía: e-IEO Aquaculture 484 105 111 |
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Open Polar |
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Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
Rotifers Copepods Enrichments Selenium speciation Toxicity |
spellingShingle |
Rotifers Copepods Enrichments Selenium speciation Toxicity Peña, M. (Marian) Giráldez, Inmaculada Calero, Sandra Ruiz-Azcona, P. (Paz) Morales, Emilio Fernández-Díaz, Catalina Hachero-Cruzado, I. (Ismael) Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments |
topic_facet |
Rotifers Copepods Enrichments Selenium speciation Toxicity |
description |
Selenium (Se) is an essential nutrient and the chemical forms of Se present in food affect both its bioavailability and its toxicity. The aim of this study was to evaluate the effects of the rotifer enrichment with three sources of selenium supplementation: selenite (Se(IV)), selenomethionine (SeMet) and selenized yeast (SelPlex). For this purpose, rotifers were exposed to each source of selenium at two concentrations during 6 days (2 culture cycles of 3 days). The toxicity order for the three sources of Se was SelPlex > SeMet > Se(IV). Modelling calculations showed that SeMet and Selplex uptake followed a first-order kinetic model. Nevertheless, uptake of Se(IV) displayed a linear pattern with increasing exposure time. Speciation data revealed that the predominant form in rotifers was SeMet. Indeed, rotifers metabolized and chemically transformed Se(IV) into SeMet. If the source of Se assayed is Se(IV), rotifers with Se levels similar to those in copepods and high content of SeMet can be accomplished when they are exposed to 2 mg of Se per million rotifers for 12 h. For SeMet and SelPlex treatments, 0.2 mg of Se per million rotifers in 3 and 6 h, respectively, were required. |
format |
Article in Journal/Newspaper |
author |
Peña, M. (Marian) Giráldez, Inmaculada Calero, Sandra Ruiz-Azcona, P. (Paz) Morales, Emilio Fernández-Díaz, Catalina Hachero-Cruzado, I. (Ismael) |
author_facet |
Peña, M. (Marian) Giráldez, Inmaculada Calero, Sandra Ruiz-Azcona, P. (Paz) Morales, Emilio Fernández-Díaz, Catalina Hachero-Cruzado, I. (Ismael) |
author_sort |
Peña, M. (Marian) |
title |
Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments |
title_short |
Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments |
title_full |
Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments |
title_fullStr |
Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments |
title_full_unstemmed |
Toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments |
title_sort |
toxicity and biochemical transformation of selenium species in rotifer ( brachionus plicatilis ) enrichments |
publisher |
Elsevier BV |
publishDate |
2018 |
url |
http://hdl.handle.net/10508/14528 https://doi.org/10.1016/j.aquaculture.2017.10.040 |
genre |
Copepods Rotifer |
genre_facet |
Copepods Rotifer |
op_relation |
0044-8486 http://hdl.handle.net/10508/14528 doi:10.1016/j.aquaculture.2017.10.040 |
op_rights |
closed access |
op_doi |
https://doi.org/10.1016/j.aquaculture.2017.10.040 |
container_title |
Aquaculture |
container_volume |
484 |
container_start_page |
105 |
op_container_end_page |
111 |
_version_ |
1768376981358903296 |