FN Archimer Export Format
PT J
TI Description of the unusual digestive tract of   Platax orbicularis   and the potential impact of   Tenacibaculum maritimum   infection
BT 
AF Alix, Maud
   Gasset, Eric
   Bardon-Albaret, Agnes
   Noel, Jean
   Pirot, Nelly
   Perez, Valérie
   Coves, Denis
   SAULNIER, Denis
   Lignot, Jehan-Hervé
   Cucchi, Patricia N.
AS 1:2,6;2:1;3:3;4:4,5;5:4,5;6:6;7:1;8:3;9:6;10:6;
FF 1:;2:PDG-RBE-MARBEC-LAAAS;3:PDG-RBE-RMPF;4:;5:;6:;7:PDG-RBE-MARBEC-LAAAS;8:PDG-RBE-RMPF;9:;10:;
C1 MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
   Institute of Marine Research, Bergen, Norway
   Ifremer, UMR Ecosystèmes Insulaires Océaniens, UPF, ILM, IRD, Tahiti, French Polynesia
   BCM, Université de Montpellier, CNRS, INSERM, Montpellier, France
   IRCM, Université de Montpellier, ICM, INSERM, Montpellier, France
   MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
C2 IFREMER, FRANCE
   IMR (BERGEN), NORWAY
   IFREMER, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV MONTPELLIER, FRANCE
SI PALAVAS
   TAHITI
SE PDG-RBE-MARBEC-LAAAS
   PDG-RBE-RMPF
UM MARBEC
   EIO
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.984
TC 3
UR https://archimer.ifremer.fr/doc/00652/76421/77485.pdf
   https://archimer.ifremer.fr/doc/00652/76421/77486.png
   https://archimer.ifremer.fr/doc/00652/76421/77487.png
   https://archimer.ifremer.fr/doc/00652/76421/77488.xlsx
   https://archimer.ifremer.fr/doc/00652/76421/77489.xlsx
   https://archimer.ifremer.fr/doc/00652/76421/77490.xlsx
LA English
DT Article
DE ;Digestive system;Tenacibaculosis;Mucous;Osmoregulation;Absorption;Batfish;Teleost
AB Background Ephippidae fish are characterized by a discoid shape with a very small visceral cavity. Among them Platax orbicularis has a high economic potential due to its flesh quality and flesh to carcass ratio. Nonetheless, the development of its aquaculture is limited by high mortality rates, especially due to Tenacibaculum maritimum infection, occurring one to three weeks after the transfer of fishes from bio-secure land-based aquaculture system to the lagoon cages for growth. Among the lines of defense against this microbial infection, the gastrointestinal tract (GIT) is less studied. The knowledge about the morphofunctional anatomy of this organ in P. orbicularis is still scarce. Therefore, the aims of this study are to characterize the GIT in non-infected P. orbicularis juveniles to then investigate the impact of T. maritimum on this multifunctional organ. Methods In the first place, the morpho-anatomy of the GIT in non-infected individuals was characterized using various histological techniques. Then, infected individuals, experimentally challenged by T. maritimum were analysed and compared to the previously established GIT reference. Results The overlapped shape of the GIT of P. orbicularis is probably due to its constrained compaction in a narrow visceral cavity. Firstly, the GIT was divided into 10 sections, from the esophagus to the rectum. For each section, the structure of the walls was characterized, with a focus on mucus secretions and the presence of the Na+/K+ ATPase pump. An identification key allowing the characterization of the GIT sections using in toto histology is given. Secondly, individuals challenged with T. maritimum exhibited differences in mucus type and proportion and, modifications in the mucosal and muscle layers. These changes could induce an imbalance in the trade-off between the GIT functions which may be in favour of protection and immunity to the disadvantage of nutrition capacities. 
PY 2020
PD SEP
SO Peerj
SN 2167-8359
PU PeerJ
VL 8
UT 000572280300009
DI 10.7717/peerj.9966
ID 76421
ER

EF