Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis

Smolina, I; Kollias, S; Møller, EF; Lindeque, PK; Sundaram, AYM; Fernandes, JMO; Hoarau, G. 2015 Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis. Marine Ecology Progress Series, 534. 79-93. 10.3354/meps11398

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Official URL: http://dx.doi.org/10.3354/meps11398

Abstract/Summary

Climate change has already led to the range expansion of warm-water plankton assemblages in the northeast Atlantic and the corresponding range contraction of colder-water species. The temperate copepod Calanus finmarchicus is predicted to shift farther northward into polar waters traditionally dominated by the arctic copepod C. glacialis. To identify temperaturemediated changes in gene expression that may be critical for the thermal acclimation and resilience of the 2 Calanus spp., we conducted a whole transcriptome profiling using RNA-seq on an Ion Torrent platform. Transcriptome responses of C. finmarchicus and C. glacialis from Disko Bay, west Greenland, were investigated under realistic thermal stresses (at + 5, +10 and +15°C) for 4 h and 6 d. C. finmarchicus showed a strong response to temperature and duration of stress, involving up-regulation of genes related to protein folding, transcription, translation and metabolism. In sharp contrast, C. glacialis displayed only low-magnitude changes in gene expression in response to temperature and duration of stress. Differences in the thermal responses of the 2 species, particularly the lack of thermal stress response in C. glacialis, are in line with laboratory and field observations and suggest a vulnerability of C. glacialis to climate change.

Item Type: Publication - Article
Additional Keywords: RNA-seq · Copepods · Temperature stress response · Heat shock protein RNA-seq · Copepods · Temperature stress response · Heat shock protein · Climate change
Subjects: Biology
Ecology and Environment
Marine Sciences
Divisions: Plymouth Marine Laboratory > Science Areas > Marine Ecology and Biodiversity
Depositing User: Pennie Lindeque
Date made live: 28 Jan 2016 16:35
Last Modified: 06 Jun 2017 16:15
URI: http://plymsea.ac.uk/id/eprint/6778

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