FN Archimer Export Format
PT J
TI Ontogenetic shift in the energy allocation strategy and physiological condition of larval plaice (Pleuronectes platessa)
BT 
AF Di Pane, Julien
   Joly, Lea
   Koubbi, Philippe
   Giraldo, Carolina
   Monchy, Sébastien
   Tavernier, Eric
   Marchal, Paul
   Loots, Christophe
AS 1:1;2:1;3:2;4:1;5:3;6:3;7:1;8:1;
FF 1:PDG-RBE-HMMN-LRHBL;2:PDG-RBE-HMMN-LRHBL;3:;4:PDG-RBE-HMMN-LRHBL;5:;6:;7:PDG-RBE-HMMN;8:PDG-RBE-HMMN-LRHBL;
C1 IFREMER, Channel and North Sea Fisheries Research Unit, Boulogne-sur-Mer, France
   UFR 918 « Terre, Environnement, Biodiversite´ », Sorbonne Universite´ , Paris, France
   LOG—Laboratoire d’Oce´anologie et Ge´osciences, Wimereux, France
C2 IFREMER, FRANCE
   UNIV SORBONNE, FRANCE
   UNIV LITTORAL COTE D'OPALE, FRANCE
SI BOULOGNE
SE PDG-RBE-HMMN-LRHBL
   PDG-RBE-HMMN
IN WOS Ifremer UPR
   DOAJ
   copubli-france
   copubli-univ-france
IF 2.74
TC 13
UR https://archimer.ifremer.fr/doc/00514/62610/66974.pdf
LA English
DT Article
CR IBTS 2017
   INTERNATIONAL BOTTOM TRAWL SURVEY (IBTS)
BO Thalassa
AB Condition indices aim to evaluate the physiological status of fish larvae by estimating both the level of starvation and potential of survival. Histological indices reveal direct effects of starvation whereas biochemical indices such as lipid classes or RNA:DNA ratios are used as proxies of condition, giving information on the amount of energy reserves and growth rate, respectively. We combined these three indices to evaluate ontogenetic variations of growth performance, lipid dynamics and nutritional condition of plaice larvae caught in the field during winter 2017 in the eastern English Channel and the Southern Bight of the North Sea. RNA:DNA ratios showed that larvae at the beginning of metamorphosis (stage 4) had a lower growth rate than younger individuals (stages 2 and 3). A significant increase in the proportion of triglycerides also occurred at stage 4, indicating energy storage. Histological indices indicated that most of the larvae were in good condition, even younger ones with low lipid reserves. There was, however, an increase in the proportion of healthy individuals over ontogeny, especially with respect to liver vacuoles which were larger and more numerous for stage 4 larvae. Combined together, these condition indices revealed the ontogenetic shift in the energy allocation strategy of plaice larvae. Young larvae (stages 2 and 3) primarily allocate energy towards somatic growth. The decrease in growth performance for stage 4 was not related to poor condition, but linked to a higher proportion of energy stored as lipids. Since the quantity of lipid reserves is particularly important for plaice larvae to withstand starvation during metamorphosis, this could be considered as a second critical period after the one of exogenous feeding for larval survival and recruitment success. 
PY 2019
PD SEP
SO Plos One
SN 1932-6203
PU Public Library of Science (PLoS)
VL 14
IS 9
UT 000532225700024
DI 10.1371/journal.pone.0222261
ID 62610
ER

EF