Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated Lake
Lake Steinsfjorden, an important Norwegian location for noble crayfish (<i>Astacus astacus</i>), is often affected by cyanobacterial blooms caused by microcystin (MC)-producing <i>Planktothrix</i> spp. The impact of MCs on noble crayfish as a food source and crayfish health i...
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| Format: | Article |
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MDPI AG
2020-05-01
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| Series: | Toxins |
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| Online Access: | https://www.mdpi.com/2072-6651/12/5/298 |
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| author | Ingunn Anita Samdal David Allan Strand Andreas Ballot Johannes Christopher Rusch Sigrid Haande Kjersti Liv Eriksen Løvberg Christopher Owen Miles Trude Vrålstad |
| author_facet | Ingunn Anita Samdal David Allan Strand Andreas Ballot Johannes Christopher Rusch Sigrid Haande Kjersti Liv Eriksen Løvberg Christopher Owen Miles Trude Vrålstad |
| author_sort | Ingunn Anita Samdal |
| collection | DOAJ |
| description | Lake Steinsfjorden, an important Norwegian location for noble crayfish (<i>Astacus astacus</i>), is often affected by cyanobacterial blooms caused by microcystin (MC)-producing <i>Planktothrix</i> spp. The impact of MCs on noble crayfish as a food source and crayfish health is largely unknown. We investigated the quantities and correlations of MCs in noble crayfish and lake water during and after a cyanobacterial bloom peaking in June–July 2015. Noble crayfish and water samples were collected monthly from June to October 2015 and in October 2016. The content of MCs was analysed by ELISA from tail muscle, intestine, stomach and hepatopancreas. PCR analysis for <i>Planktothrix</i> gene markers was performed on crayfish stomach content. Water samples were analysed for phytoplankton composition, biomass and MCs. PCR-positive stomach contents indicated <i>Planktothrix</i> to be part of the noble crayfish diet. Concentrations of MCs were highest in the hepatopancreas, stomach and intestine, peaking in August–September. Tail muscle contained low concentrations of MCs. Similar levels of MCs were found in crayfish from 2016. Except in September 2015, a normal portion of boiled noble crayfish tails was below the tolerable daily intake (TDI) for MCs for humans. Removing the intestine more than halved the content of MCs and seems a reasonable precautionary measure for noble crayfish consumers. |
| first_indexed | 2024-03-10T20:01:55Z |
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| issn | 2072-6651 |
| language | English |
| last_indexed | 2024-03-10T20:01:55Z |
| publishDate | 2020-05-01 |
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| record_format | Article |
| series | Toxins |
| spelling | doaj.art-dd380de0da5a4cbfb96118a78d77d6742023-11-19T23:32:03ZengMDPI AGToxins2072-66512020-05-0112529810.3390/toxins12050298Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated LakeIngunn Anita Samdal0David Allan Strand1Andreas Ballot2Johannes Christopher Rusch3Sigrid Haande4Kjersti Liv Eriksen Løvberg5Christopher Owen Miles6Trude Vrålstad7Norwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, NorwayNorwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, NorwayNorwegian Institute for Water Research, Gaustadalléen 21, 0349 Oslo, NorwayNorwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, NorwayNorwegian Institute for Water Research, Gaustadalléen 21, 0349 Oslo, NorwayNorwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, NorwayNorwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, NorwayNorwegian Veterinary Institute, P.O. Box 750 Sentrum, 0106 Oslo, NorwayLake Steinsfjorden, an important Norwegian location for noble crayfish (<i>Astacus astacus</i>), is often affected by cyanobacterial blooms caused by microcystin (MC)-producing <i>Planktothrix</i> spp. The impact of MCs on noble crayfish as a food source and crayfish health is largely unknown. We investigated the quantities and correlations of MCs in noble crayfish and lake water during and after a cyanobacterial bloom peaking in June–July 2015. Noble crayfish and water samples were collected monthly from June to October 2015 and in October 2016. The content of MCs was analysed by ELISA from tail muscle, intestine, stomach and hepatopancreas. PCR analysis for <i>Planktothrix</i> gene markers was performed on crayfish stomach content. Water samples were analysed for phytoplankton composition, biomass and MCs. PCR-positive stomach contents indicated <i>Planktothrix</i> to be part of the noble crayfish diet. Concentrations of MCs were highest in the hepatopancreas, stomach and intestine, peaking in August–September. Tail muscle contained low concentrations of MCs. Similar levels of MCs were found in crayfish from 2016. Except in September 2015, a normal portion of boiled noble crayfish tails was below the tolerable daily intake (TDI) for MCs for humans. Removing the intestine more than halved the content of MCs and seems a reasonable precautionary measure for noble crayfish consumers.https://www.mdpi.com/2072-6651/12/5/298<i>Astacus astacus</i>cyanobacteriaELISAnoble crayfishfood safetymicrocystin |
| spellingShingle | Ingunn Anita Samdal David Allan Strand Andreas Ballot Johannes Christopher Rusch Sigrid Haande Kjersti Liv Eriksen Løvberg Christopher Owen Miles Trude Vrålstad Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated Lake Toxins <i>Astacus astacus</i> cyanobacteria ELISA noble crayfish food safety microcystin |
| title | Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated Lake |
| title_full | Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated Lake |
| title_fullStr | Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated Lake |
| title_full_unstemmed | Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated Lake |
| title_short | Microcystins in European Noble Crayfish <em>Astacus astacus</em> in Lake Steinsfjorden, a <em>Planktothrix</em>-Dominated Lake |
| title_sort | microcystins in european noble crayfish em astacus astacus em in lake steinsfjorden a em planktothrix em dominated lake |
| topic | <i>Astacus astacus</i> cyanobacteria ELISA noble crayfish food safety microcystin |
| url | https://www.mdpi.com/2072-6651/12/5/298 |
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