A transcriptome resource for Antarctic krill (Euphausia superba Dana) exposed to short-term stress

• Published in: Marine Genomics
• Main Authors: Martins, Maria João F, Lago-Leston, Asuncion, Anjos, Antonio, Duarte, Carlos M., Agusti, Susana, Serrão, Ester A., Pearson, Gareth A
• Other Authors: Biological and Environmental Sciences and Engineering (BESE) Division, Marine Science Program, Red Sea Research Center (RSRC), CCMAR, Universidade do Algarve, 8005-139 Faro, Portugal, ISMAT - Instituto Superior Manuel Teixeira Gomes, 8500-508 Portimão, Portugal, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution NHB, MRC 121 , Washington DC 20013-7012, USA
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Elsevier BV 2015
• Subjects: 454 pyrosequencing; Food shortage; UV; Antarc*; Antarctic; Antarctic Krill; Euphausia superba
• Online Access: http://hdl.handle.net/10754/594112; https://doi.org/10.1016/j.margen.2015.04.008

Euphausia superba is a keystone species in Antarctic food webs. However, the continued decrease in stock density raises concerns over the resilience and adaptive potential of krill to withstand the current rate of environmental change. We undertook a transcriptome-scale approach (454 pyrosequencing) as a baseline for future studies addressing the physiological response of krill to short-term food shortage and natural UV-B stress. The final assembly resulted in a total of 26,415 contigs, 39.8% of which were putatively annotated. Exploratory analyses indicate an overall reduction in protein synthesis under food shortage while UV stress resulted in the activation of photo-protective mechanisms. © 2015. Spanish Ministry of Economy and Competitivity[POL2006-00550/CTM] Portuguese Science Foundation (FCT)[PTCD/MAR/72630/2006]