Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops
We examined the RNA and DNA concentration of field-caught scallops Chlamys islandica, maintained in suspended cultures at 15 and 30 m depth, and scallops from a wild population at 50 to 60 m in Kobbefjord, southwest Greenland. General relations between RNA and DNA concentrations and individual shell...
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Inter Research
2010
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Online Access: | https://oceanrep.geomar.de/id/eprint/9978/ https://oceanrep.geomar.de/id/eprint/9978/1/m407p087.pdf https://doi.org/10.3354/meps08540 |
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ftoceanrep:oai:oceanrep.geomar.de:9978 2023-05-15T14:26:26+02:00 Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops Blicher, Martin E. Clemmesen, Catriona Sejr, Mikael K. Rysgaard, Soeren 2010 text https://oceanrep.geomar.de/id/eprint/9978/ https://oceanrep.geomar.de/id/eprint/9978/1/m407p087.pdf https://doi.org/10.3354/meps08540 en eng Inter Research https://oceanrep.geomar.de/id/eprint/9978/1/m407p087.pdf Blicher, M. E., Clemmesen, C. , Sejr, M. K. and Rysgaard, S. (2010) Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops. Open Access Marine Ecology Progress Series, 407 . pp. 87-98. DOI 10.3354/meps08540 <https://doi.org/10.3354/meps08540>. doi:10.3354/meps08540 info:eu-repo/semantics/openAccess Article PeerReviewed 2010 ftoceanrep https://doi.org/10.3354/meps08540 2023-04-07T14:57:43Z We examined the RNA and DNA concentration of field-caught scallops Chlamys islandica, maintained in suspended cultures at 15 and 30 m depth, and scallops from a wild population at 50 to 60 m in Kobbefjord, southwest Greenland. General relations between RNA and DNA concentrations and individual shell height were established, and we found that the RNA:DNA ratio (RD) worked well as a standardisation of the RNA concentration independent of size and sex. During an experimental period of 14 mo, we observed a pronounced seasonal pattern in RD and mass growth, and differences between depths. Even though the period with high levels of RD reflected the growth season relatively well, RD was a poor predictor of individual mass growth rates of C. islandica. However, we found a non-linear response in RD to increased food concentrations resulting in RD being up- and down-regulated at the beginning and end of the productive summer season, respectively. These results indicate that short-term dynamics in the actual mass growth rate might be controlled through regulation of ribosome activity rather than ribosome number (RNA concentration). This adaption would allow scallops to up-regulate protein synthesis more rapidly, thereby ensuring efficient utilisation of the intense peaks in food availability in coastal areas in the Arctic. Therefore, we suggest that RD in C. islandica reflects the growth potential rather than the actual growth rate. Still, the amount of unexplained variance in RD is considerable and not independent over time, suggesting the existence of unresolved mechanisms or relationships. Article in Journal/Newspaper Arctic Arctic Greenland OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Greenland Kobbefjord ENVELOPE(-51.527,-51.527,64.177,64.177) Marine Ecology Progress Series 407 87 98 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
We examined the RNA and DNA concentration of field-caught scallops Chlamys islandica, maintained in suspended cultures at 15 and 30 m depth, and scallops from a wild population at 50 to 60 m in Kobbefjord, southwest Greenland. General relations between RNA and DNA concentrations and individual shell height were established, and we found that the RNA:DNA ratio (RD) worked well as a standardisation of the RNA concentration independent of size and sex. During an experimental period of 14 mo, we observed a pronounced seasonal pattern in RD and mass growth, and differences between depths. Even though the period with high levels of RD reflected the growth season relatively well, RD was a poor predictor of individual mass growth rates of C. islandica. However, we found a non-linear response in RD to increased food concentrations resulting in RD being up- and down-regulated at the beginning and end of the productive summer season, respectively. These results indicate that short-term dynamics in the actual mass growth rate might be controlled through regulation of ribosome activity rather than ribosome number (RNA concentration). This adaption would allow scallops to up-regulate protein synthesis more rapidly, thereby ensuring efficient utilisation of the intense peaks in food availability in coastal areas in the Arctic. Therefore, we suggest that RD in C. islandica reflects the growth potential rather than the actual growth rate. Still, the amount of unexplained variance in RD is considerable and not independent over time, suggesting the existence of unresolved mechanisms or relationships. |
format |
Article in Journal/Newspaper |
author |
Blicher, Martin E. Clemmesen, Catriona Sejr, Mikael K. Rysgaard, Soeren |
spellingShingle |
Blicher, Martin E. Clemmesen, Catriona Sejr, Mikael K. Rysgaard, Soeren Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops |
author_facet |
Blicher, Martin E. Clemmesen, Catriona Sejr, Mikael K. Rysgaard, Soeren |
author_sort |
Blicher, Martin E. |
title |
Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops |
title_short |
Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops |
title_full |
Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops |
title_fullStr |
Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops |
title_full_unstemmed |
Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops |
title_sort |
seasonal and spatial variations in the rna:dna ratio and its relation to growth in sub-arctic scallops |
publisher |
Inter Research |
publishDate |
2010 |
url |
https://oceanrep.geomar.de/id/eprint/9978/ https://oceanrep.geomar.de/id/eprint/9978/1/m407p087.pdf https://doi.org/10.3354/meps08540 |
long_lat |
ENVELOPE(-51.527,-51.527,64.177,64.177) |
geographic |
Arctic Greenland Kobbefjord |
geographic_facet |
Arctic Greenland Kobbefjord |
genre |
Arctic Arctic Greenland |
genre_facet |
Arctic Arctic Greenland |
op_relation |
https://oceanrep.geomar.de/id/eprint/9978/1/m407p087.pdf Blicher, M. E., Clemmesen, C. , Sejr, M. K. and Rysgaard, S. (2010) Seasonal and spatial variations in the RNA:DNA ratio and its relation to growth in sub-Arctic scallops. Open Access Marine Ecology Progress Series, 407 . pp. 87-98. DOI 10.3354/meps08540 <https://doi.org/10.3354/meps08540>. doi:10.3354/meps08540 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps08540 |
container_title |
Marine Ecology Progress Series |
container_volume |
407 |
container_start_page |
87 |
op_container_end_page |
98 |
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1766299004947136512 |