FN Archimer Export Format
PT J
TI Specific regulations of gill membrane fatty acids in response to environmental variability reveal fitness differences between two suspension-feeding bivalves (Nodipecten subnodosus and Spondylus crassisquama)
BT 
AF Mathieu-Resuge, Margaux
   Le Grand, Fabienne
   Schaal, Gauthier
   Lluch-Cota, Salvador E
   Racotta, Ilie S
   Kraffe, Edouard
   Todgham, Anne
AS 1:1,2;2:1;3:1;4:3;5:3;6:1;7:;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Univ Brest, CNRS, IRD, Ifremer, LEMAR, IUEM, F-29280, Plouzane, France
   WasserCluster Lunz—Inter-University Centre for Aquatic Ecosystem Research, Dr. Carl Kupelwieser Promenade 5, A-3293, Lunz am See, Austria
   Centro de Investigaciones Biológicas del Noroeste (CIBNOR), La Paz, BCS, Mexico
C2 CNRS, FRANCE
   WASSERCLUSTER LUNZ, AUSTRIA
   CIBNOR, MEXICO
UM LEMAR
IN WOS Cotutelle UMR
   DOAJ
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 3.079
TC 5
UR https://archimer.ifremer.fr/doc/00648/75991/76893.pdf
LA English
DT Article
DE ;Bivalves;coastal lagoon;gill membrane fatty acids;diet influence;physiological regulation;trophic ecophysiology
AB Bivalves’ physiological functions (i.e. growth, reproduction) are influenced by environmental variability that can be concomitant with trophic resource variations in terms of quality and quantity. Among the essential molecules that bivalves need to acquire from their diet to maintain physiological functions, fatty acids (FAs) such as polyunsaturated fatty acids (e.g. 20:4n-6 (arachidonic acid), 20:5n-3 (eicosapentaenoic acid) and 22:6n-3 (docosahexaenoic acid)) have been described to play a critical role. The present study examined the FA composition of gill membrane lipids of two bivalve species, Nodipecten subnodosus and Spondylus crassisquama, sampled in a coastal lagoon of the Northeastern Pacific (Ojo de Liebre, Mexico), at two contrasting locations (inner versus outer part of the lagoon) and at two different periods (February and August 2016). Spatiotemporal variations showed that FA composition of gill membrane lipids was highly correlated to FA composition of reserve lipids from digestive gland. This highlights the marked impact of the diet on FA composition of gill membranes. Interestingly, both species presented differences in the seasonal accumulations of plasmalogens and of particular FA that are not found in their diet (e.g. non-methylene interrupted FA, 22:4n-9trans, 20:1n-11), suggesting specific regulations of FA incorporation and lipid class composition in gill membranes to maintain optimal membrane function in their specific and changing environment. This study highlights the importance to characterize the spatial and temporal variability of food resources in order to apprehend the physiological consequences of environmental variability, as well as species differential regulation capacities in a changing world. 
PY 2020
PD AUG
SO Conservation Physiology
SN 2051-1434
PU Oxford University Press (OUP)
VL 8
IS 1
UT 000562767300001
DI 10.1093/conphys/coaa079
ID 75991
ER

EF