FN Archimer Export Format PT J TI Vitamin A supplementation enhances Senegalese sole (Solea senegalensis) early juvenile’s immunocompetence: new insights on potential underlying pathways BT AF FERNANDEZ, Ignacio LOPEZ-JOVEN, Maria-Carmen ANDREE, Karl B. ROQUE, Ana GISBERT, Enric AS 1:1,2;2:2,3;3:2;4:2;5:2; FF 1:;2:PDG-RBE-IHPE;3:;4:;5:; C1 Univ Algarve, Ctr Ciencias Mar CCMAR CIMAR LA, P-8005139 Faro, Portugal. Ctr St Carles de la Rapita IRTA SCR, IRTA, Unitat Cultius Expt, San Carlos de la Rapita 43540, Spain. Univ Perpignan, Univ Montpellier, IFREMER, IHPE,CNRS,UMR 5244, F-34095 Montpellier 5, France. C2 UNIV ALGARVE, PORTUGAL IRTA, SPAIN IFREMER, FRANCE SI MONTPELLIER SE PDG-RBE-IHPE UM IHPE IN WOS Ifremer jusqu'en 2018 copubli-europe IF 3.025 TC 14 UR https://archimer.ifremer.fr/doc/00275/38617/37147.pdf LA English DT Article DE ;Vitamin;Retinoic acid;Immune system;Gene expression;Senegalese sole Solea senegalensis;Photobacterium damselae subp. damselae AB Senegalese sole (Solea senegalensis) has been considered since the 1990´s to be a promising flatfish species for diversifying European marine aquaculture. However, pathogen outbreaks leading to high mortality rates can impair Senegalese sole commercial production at the weaning phase. Different approaches have been shown to improve fish immunocompetence; with this in mind the objective of the work described herein was to determine whether increased levels of dietary vitamin A (VA) improve the immune response in early juveniles of Senegalese sole. For this purpose, Senegalese sole were reared and fed with Artemia metanauplii containing increased levels of VA (37,000; 44,666; 82,666 and 203,000 total VA IU Kg-1) from 6 to 60 days post-hatch (early juvenile stage). After an induced bacterial infection with a 50 % lethal dose of Photobacterium damselae subsp. damselae, survival rate, as well as underlying gene expression of specific immune markers (C1inh, C3, C9, Lgals1, Hamp, LysC, Prdx1, Steap4 and Transf) were evaluated. Results showed that fish fed higher doses of dietary VA were more resistant to the bacterial challenge. The lower mortality was found to be related with differential expression of genes involved in the complement system and iron availability. We suggest that feeding metamorphosed Senegalese sole with 203,000 total VA IU Kg-1 might be an effective, inexpensive and environmentally friendly method to improve Senegalese sole immunocompetence, thereby improving survival of juveniles and reducing economic losses. PY 2015 PD OCT SO Fish & Shellfish Immunology SN 1050-4648 PU Academic Press Ltd- Elsevier Science Ltd VL 46 IS 2 UT 000363071200060 BP 703 EP 709 DI 10.1016/j.fsi.2015.08.007 ID 38617 ER EF