Transcriptomic response to thermal and salinity stress in introduced and native sympatric Palaemon caridean shrimps

Marie, Amandine D. and Smith, Steve and Green, Andy J. and Rico, Ciro and Lejeusne, Christophe (2017) Transcriptomic response to thermal and salinity stress in introduced and native sympatric Palaemon caridean shrimps. Scientific Reports, 7 (13980). pp. 1-12. ISSN 2045-2322

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Abstract

Organisms develop local adaptations to cope with spatially and temporally variable environments
such as estuarine habitats, where abiotic parameters such as salinity and temperature fluctuate
continuously. Studying the regulation of gene expression in a variable environment allows us to
understand the underlying molecular mechanisms of these adaptations and the relative roles of the
genetic and plastic response. The transcriptomes of the European native Palaemon longirostris (PL)
and the introduced P. macrodactylus (PM) shrimps are described and compared after an experiment
simulating summer conditions in the Guadalquivir Estuary, Spain. Specimens, collected in the
Guadalquivir Estuary, were maintained at a temperature and salinity of 20 °C and 5 ppt for the control,
and 30 °C and 15 ppt for the stress treatment. A large amount of differential gene expression was
observed: 16,013 and 2,594 for PL and PM respectively. Functionally annotated unigenes revealed some
differences, with PL seemingly having to face stronger physiological stress than PM. Thus, PM seems
to have greater resistance than PL under conditions of high temperature and salinity. These results
constitute a step forward in the understanding of the underlying molecular mechanisms of genetic
adaptation of native invertebrates, and alien taxa that have successfully invaded estuaries in temperate
regions around the world.

Item Type:	Journal Article
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > Q Science (General)
Divisions:	Faculty of Science, Technology and Environment (FSTE) > School of Marine Studies
Depositing User:	Fulori Nainoca - Waqairagata
Date Deposited:	30 Oct 2017 04:10
Last Modified:	02 Oct 2018 03:44
URI:	https://repository.usp.ac.fj/id/eprint/10350

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