The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard)
We investigated pigment and mycosporine-like amino acid (MAA) concentrations of phytoplankton and Northern krill ( Thysanoessa sp.) in sub-Arctic Kongsfjorden. Chlorophyll a (Chl-a) concentrations in the surface and middle-layer water were 0.44 μg L −1 (±0.17 μg L −1 ) and 0.63 μg L −1 (±0.25 μg L −...
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Language: | English |
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MDPI AG
2022
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Online Access: | https://doi.org/10.3390/md20040238 https://doaj.org/article/9ea715b8073645eaaa429ea9347d9174 |
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ftdoajarticles:oai:doaj.org/article:9ea715b8073645eaaa429ea9347d9174 2024-01-07T09:42:00+01:00 The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard) Bo Kyung Kim Mi-Ok Park Jun-Oh Min Sung-Ho Kang Kyung-Hoon Shin Eun Jin Yang Sun-Yong Ha 2022-03-01T00:00:00Z https://doi.org/10.3390/md20040238 https://doaj.org/article/9ea715b8073645eaaa429ea9347d9174 EN eng MDPI AG https://www.mdpi.com/1660-3397/20/4/238 https://doaj.org/toc/1660-3397 doi:10.3390/md20040238 1660-3397 https://doaj.org/article/9ea715b8073645eaaa429ea9347d9174 Marine Drugs, Vol 20, Iss 4, p 238 (2022) pigment mycosporine-like amino acids phytoplankton krill Kongsfjorden Svalbard Biology (General) QH301-705.5 article 2022 ftdoajarticles https://doi.org/10.3390/md20040238 2023-12-10T01:45:00Z We investigated pigment and mycosporine-like amino acid (MAA) concentrations of phytoplankton and Northern krill ( Thysanoessa sp.) in sub-Arctic Kongsfjorden. Chlorophyll a (Chl-a) concentrations in the surface and middle-layer water were 0.44 μg L −1 (±0.17 μg L −1 ) and 0.63 μg L −1 (±0.25 μg L −1 ), respectively. Alloxanthin (Allo, a marker of cryptophytes) was observed at all stations, and its mean values for surface and middle-layer water were 0.09 μg L −1 (±0.05 μg L −1 ) and 0.05 (±0.02 μg L −1 ), respectively. The mean MAA-to-Chl-a ratios at the surface (3.31 ± 2.58 μg (μg Chl-a) −1 ) were significantly higher than those in the middle-layer water (0.88 ± 0.49 μg (μg Chl-a) −1 ), suggesting that these compounds play an important role in reducing UV photodamage. In gut pigment levels of Northern krill, the most abundant accessory pigment was Allo (2.79 ± 0.33 μg g −1 dry weight; d.w.), as was the accumulation of Chl-a (8.29 ± 1.13 μg g −1 d.w.). The average concentration of MAAs was 1.87 mg g −1 d.w. (±0.88 mg g −1 d.w.) in krill eyes, which was higher than that in all other body parts (0.99 ± 0.41 mg g −1 d.w.), except for the gut. Thysanoessa sp. was found to contain five identified MAAs (shinorine, palythine, porphyra-334, mycosporine-glycine, and M-332) in the krill eye, whereas shinorine and porphyra-334 were only observed in the krill body, not the eyes and gut. These findings suggest that Northern krill accumulate MAAs of various compositions through the diet (mainly cryptophytes) and translocate them among their body parts as an adaptation for photoprotection and physiological demands. Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden Northern krill Phytoplankton Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Allo ENVELOPE(-61.800,-61.800,-63.967,-63.967) Marine Drugs 20 4 238 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
pigment mycosporine-like amino acids phytoplankton krill Kongsfjorden Svalbard Biology (General) QH301-705.5 |
spellingShingle |
pigment mycosporine-like amino acids phytoplankton krill Kongsfjorden Svalbard Biology (General) QH301-705.5 Bo Kyung Kim Mi-Ok Park Jun-Oh Min Sung-Ho Kang Kyung-Hoon Shin Eun Jin Yang Sun-Yong Ha The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard) |
topic_facet |
pigment mycosporine-like amino acids phytoplankton krill Kongsfjorden Svalbard Biology (General) QH301-705.5 |
description |
We investigated pigment and mycosporine-like amino acid (MAA) concentrations of phytoplankton and Northern krill ( Thysanoessa sp.) in sub-Arctic Kongsfjorden. Chlorophyll a (Chl-a) concentrations in the surface and middle-layer water were 0.44 μg L −1 (±0.17 μg L −1 ) and 0.63 μg L −1 (±0.25 μg L −1 ), respectively. Alloxanthin (Allo, a marker of cryptophytes) was observed at all stations, and its mean values for surface and middle-layer water were 0.09 μg L −1 (±0.05 μg L −1 ) and 0.05 (±0.02 μg L −1 ), respectively. The mean MAA-to-Chl-a ratios at the surface (3.31 ± 2.58 μg (μg Chl-a) −1 ) were significantly higher than those in the middle-layer water (0.88 ± 0.49 μg (μg Chl-a) −1 ), suggesting that these compounds play an important role in reducing UV photodamage. In gut pigment levels of Northern krill, the most abundant accessory pigment was Allo (2.79 ± 0.33 μg g −1 dry weight; d.w.), as was the accumulation of Chl-a (8.29 ± 1.13 μg g −1 d.w.). The average concentration of MAAs was 1.87 mg g −1 d.w. (±0.88 mg g −1 d.w.) in krill eyes, which was higher than that in all other body parts (0.99 ± 0.41 mg g −1 d.w.), except for the gut. Thysanoessa sp. was found to contain five identified MAAs (shinorine, palythine, porphyra-334, mycosporine-glycine, and M-332) in the krill eye, whereas shinorine and porphyra-334 were only observed in the krill body, not the eyes and gut. These findings suggest that Northern krill accumulate MAAs of various compositions through the diet (mainly cryptophytes) and translocate them among their body parts as an adaptation for photoprotection and physiological demands. |
format |
Article in Journal/Newspaper |
author |
Bo Kyung Kim Mi-Ok Park Jun-Oh Min Sung-Ho Kang Kyung-Hoon Shin Eun Jin Yang Sun-Yong Ha |
author_facet |
Bo Kyung Kim Mi-Ok Park Jun-Oh Min Sung-Ho Kang Kyung-Hoon Shin Eun Jin Yang Sun-Yong Ha |
author_sort |
Bo Kyung Kim |
title |
The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard) |
title_short |
The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard) |
title_full |
The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard) |
title_fullStr |
The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard) |
title_full_unstemmed |
The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill ( Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard) |
title_sort |
interplay of mycosporine-like amino acids between phytoplankton groups and northern krill ( thysanoessa sp.) in a high-latitude fjord (kongsfjorden, svalbard) |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/md20040238 https://doaj.org/article/9ea715b8073645eaaa429ea9347d9174 |
long_lat |
ENVELOPE(-61.800,-61.800,-63.967,-63.967) |
geographic |
Arctic Svalbard Allo |
geographic_facet |
Arctic Svalbard Allo |
genre |
Arctic Kongsfjord* Kongsfjorden Northern krill Phytoplankton Svalbard |
genre_facet |
Arctic Kongsfjord* Kongsfjorden Northern krill Phytoplankton Svalbard |
op_source |
Marine Drugs, Vol 20, Iss 4, p 238 (2022) |
op_relation |
https://www.mdpi.com/1660-3397/20/4/238 https://doaj.org/toc/1660-3397 doi:10.3390/md20040238 1660-3397 https://doaj.org/article/9ea715b8073645eaaa429ea9347d9174 |
op_doi |
https://doi.org/10.3390/md20040238 |
container_title |
Marine Drugs |
container_volume |
20 |
container_issue |
4 |
container_start_page |
238 |
_version_ |
1787422828952289280 |