Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods
The toxic diatom Pseudo-nitzschia seriata was exposed directly and indirectly (separated by a membrane)to copepods, Calanus hyperboreus and C. finmarchicus, to evaluate the effects of the copepods on domoicacid production and chain formation in P. seriata. The toxicity of P. seriata increased in the...
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2015
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ftdtupubl:oai:pure.atira.dk:publications/c7119940-ff99-4c11-a340-766f922f6936 2024-09-15T18:00:43+00:00 Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods Tammilehto, Anna Nielsen, Torkel Gissel Krock, B. Møller, Eva Friis Lundholm, Nina 2015 https://orbit.dtu.dk/en/publications/c7119940-ff99-4c11-a340-766f922f6936 https://doi.org/10.1016/j.aquatox.2014.11.026 eng eng https://orbit.dtu.dk/en/publications/c7119940-ff99-4c11-a340-766f922f6936 info:eu-repo/semantics/closedAccess Tammilehto , A , Nielsen , T G , Krock , B , Møller , E F & Lundholm , N 2015 , ' Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods ' , Aquatic Toxicology , vol. 159 , pp. 52-61 . https://doi.org/10.1016/j.aquatox.2014.11.026 article 2015 ftdtupubl https://doi.org/10.1016/j.aquatox.2014.11.026 2024-08-05T23:48:29Z The toxic diatom Pseudo-nitzschia seriata was exposed directly and indirectly (separated by a membrane)to copepods, Calanus hyperboreus and C. finmarchicus, to evaluate the effects of the copepods on domoicacid production and chain formation in P. seriata. The toxicity of P. seriata increased in the presence ofthe copepods. This response was chemically mediated without physical contact between the organismssuggesting that it was induced by potential waterborne cues from the copepods or changes in waterchemistry. Domoic acid production may be related to defense against grazing in P. seriata although it wasnot shown in the present study. To evaluate if the induction of domoic acid production was mediatedby the chemical cues from damaged P. seriata cells, live P. seriata cells were exposed to a P. seriata cellhomogenate, but no effect was observed. Chain formation in P. seriata was affected only when in directcontact with the copepods. This study suggests that the presence of zooplankton may be one of the factorsaffecting the toxicity of Pseudo-nitzschia blooms in the field. Article in Journal/Newspaper Calanus hyperboreus Copepods Technical University of Denmark: DTU Orbit Aquatic Toxicology 159 52 61 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
The toxic diatom Pseudo-nitzschia seriata was exposed directly and indirectly (separated by a membrane)to copepods, Calanus hyperboreus and C. finmarchicus, to evaluate the effects of the copepods on domoicacid production and chain formation in P. seriata. The toxicity of P. seriata increased in the presence ofthe copepods. This response was chemically mediated without physical contact between the organismssuggesting that it was induced by potential waterborne cues from the copepods or changes in waterchemistry. Domoic acid production may be related to defense against grazing in P. seriata although it wasnot shown in the present study. To evaluate if the induction of domoic acid production was mediatedby the chemical cues from damaged P. seriata cells, live P. seriata cells were exposed to a P. seriata cellhomogenate, but no effect was observed. Chain formation in P. seriata was affected only when in directcontact with the copepods. This study suggests that the presence of zooplankton may be one of the factorsaffecting the toxicity of Pseudo-nitzschia blooms in the field. |
format |
Article in Journal/Newspaper |
author |
Tammilehto, Anna Nielsen, Torkel Gissel Krock, B. Møller, Eva Friis Lundholm, Nina |
spellingShingle |
Tammilehto, Anna Nielsen, Torkel Gissel Krock, B. Møller, Eva Friis Lundholm, Nina Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods |
author_facet |
Tammilehto, Anna Nielsen, Torkel Gissel Krock, B. Møller, Eva Friis Lundholm, Nina |
author_sort |
Tammilehto, Anna |
title |
Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods |
title_short |
Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods |
title_full |
Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods |
title_fullStr |
Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods |
title_full_unstemmed |
Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods |
title_sort |
induction of domoic acid production in the toxic diatom pseudo-nitzschia seriata by calanoid copepods |
publishDate |
2015 |
url |
https://orbit.dtu.dk/en/publications/c7119940-ff99-4c11-a340-766f922f6936 https://doi.org/10.1016/j.aquatox.2014.11.026 |
genre |
Calanus hyperboreus Copepods |
genre_facet |
Calanus hyperboreus Copepods |
op_source |
Tammilehto , A , Nielsen , T G , Krock , B , Møller , E F & Lundholm , N 2015 , ' Induction of domoic acid production in the toxic diatom Pseudo-nitzschia seriata by calanoid copepods ' , Aquatic Toxicology , vol. 159 , pp. 52-61 . https://doi.org/10.1016/j.aquatox.2014.11.026 |
op_relation |
https://orbit.dtu.dk/en/publications/c7119940-ff99-4c11-a340-766f922f6936 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.aquatox.2014.11.026 |
container_title |
Aquatic Toxicology |
container_volume |
159 |
container_start_page |
52 |
op_container_end_page |
61 |
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1810437889384775680 |