Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters
Summary The tendency of ectotherms to get larger in the cold (Bergmann clines) has potentially great implications for individual performance and food web dynamics. The mechanistic drivers of this trend are not well understood, however. One fundamental question is to which extent variation in body si...
Published in: | Ecology and Evolution |
---|---|
Main Authors: | , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2016
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ece3.2302 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2302 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2302 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2302 |
id |
crwiley:10.1002/ece3.2302 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ece3.2302 2024-06-02T08:01:54+00:00 Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters Leinaas, Hans Petter Jalal, Marwa Gabrielsen, Tove M. Hessen, Dag O. Norges Forskningsråd 2016 http://dx.doi.org/10.1002/ece3.2302 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2302 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2302 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2302 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 6, issue 16, page 5585-5595 ISSN 2045-7758 2045-7758 journal-article 2016 crwiley https://doi.org/10.1002/ece3.2302 2024-05-06T07:01:21Z Summary The tendency of ectotherms to get larger in the cold (Bergmann clines) has potentially great implications for individual performance and food web dynamics. The mechanistic drivers of this trend are not well understood, however. One fundamental question is to which extent variation in body size is attributed to variation in cell size, which again is related to genome size. In this study, we analyzed body and genome size in four species of marine calanoid copepods, Calanus finmarchicus , C. glacialis , C. hyperboreus and Paraeuchaeta norvegica , with populations from both south Norwegian fjords and the High Arctic. The Calanus species showed typical interspecific Bergmann clines, and we assessed whether they also displayed similar intraspecific variations—and if correlation between genome size and body size differed between species. There were considerable inter‐ as well as intraspecific variations in body size and genome size, with the northernmost populations having the largest values of both variables within each species. Positive intraspecific relationships suggest a functional link between body and genome size, although its adaptiveness has not been settled. Impact of additional drivers like phylogeny or specific adaptations, however, was suggested by striking divergences in body size – genome size ratios among species. Thus, C. glacialis and C. hyperboreus , had fairly similar genome size despite very different body size, while P. norvegica, of similar body size as C. hyperboreus, had the largest genome sizes ever recorded from copepods. The inter‐ and intraspecific latitudinal body size clines suggest that climate change may have major impact on body size composition of keystone species in marine planktonic food webs. Article in Journal/Newspaper Arctic Calanus finmarchicus Climate change Copepods Wiley Online Library Arctic Ecology and Evolution 6 16 5585 5595 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Summary The tendency of ectotherms to get larger in the cold (Bergmann clines) has potentially great implications for individual performance and food web dynamics. The mechanistic drivers of this trend are not well understood, however. One fundamental question is to which extent variation in body size is attributed to variation in cell size, which again is related to genome size. In this study, we analyzed body and genome size in four species of marine calanoid copepods, Calanus finmarchicus , C. glacialis , C. hyperboreus and Paraeuchaeta norvegica , with populations from both south Norwegian fjords and the High Arctic. The Calanus species showed typical interspecific Bergmann clines, and we assessed whether they also displayed similar intraspecific variations—and if correlation between genome size and body size differed between species. There were considerable inter‐ as well as intraspecific variations in body size and genome size, with the northernmost populations having the largest values of both variables within each species. Positive intraspecific relationships suggest a functional link between body and genome size, although its adaptiveness has not been settled. Impact of additional drivers like phylogeny or specific adaptations, however, was suggested by striking divergences in body size – genome size ratios among species. Thus, C. glacialis and C. hyperboreus , had fairly similar genome size despite very different body size, while P. norvegica, of similar body size as C. hyperboreus, had the largest genome sizes ever recorded from copepods. The inter‐ and intraspecific latitudinal body size clines suggest that climate change may have major impact on body size composition of keystone species in marine planktonic food webs. |
author2 |
Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Leinaas, Hans Petter Jalal, Marwa Gabrielsen, Tove M. Hessen, Dag O. |
spellingShingle |
Leinaas, Hans Petter Jalal, Marwa Gabrielsen, Tove M. Hessen, Dag O. Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters |
author_facet |
Leinaas, Hans Petter Jalal, Marwa Gabrielsen, Tove M. Hessen, Dag O. |
author_sort |
Leinaas, Hans Petter |
title |
Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters |
title_short |
Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters |
title_full |
Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters |
title_fullStr |
Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters |
title_full_unstemmed |
Inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters |
title_sort |
inter‐ and intraspecific variation in body‐ and genome size in calanoid copepods from temperate and arctic waters |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/ece3.2302 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2302 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2302 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2302 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Calanus finmarchicus Climate change Copepods |
genre_facet |
Arctic Calanus finmarchicus Climate change Copepods |
op_source |
Ecology and Evolution volume 6, issue 16, page 5585-5595 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.2302 |
container_title |
Ecology and Evolution |
container_volume |
6 |
container_issue |
16 |
container_start_page |
5585 |
op_container_end_page |
5595 |
_version_ |
1800746397232791552 |