Effects of local Polynesian plants and algae on growth and expression of two immune-related genes in orbicular batfish (Platax orbicularis)
|Author(s)||Reverter Miriam1, 2, 5, Saulnier Denis3, 5, David Rarahu3, 4, Bardon-Albaret Agnes3, Belliard Corinne3, Tapissier-Bontemps Nathalie1, 5, Lecchini David2, 5, Sasal Pierre2, 5|
|Affiliation(s)||1 : Univ PerpignanViaDomitia, CRIOBE, CNRS, EPHE,PSL,USR3278, 52 Ave Paul Alduy, F-66860 Perpignan, France.
2 : UPVD, CRIOBE, CNRS, PSL,EPHE,USR3278, BP1013, Papetoai 98729, Moorea, Fr Polynesia.
3 : IFREMER, IRD, ILM, UPF,EIO,UMR 241, BP 49, Taravao 98719, Tahiti, Fr Polynesia.
4 : Serv Peche, BP 20 Papeete, Tahiti 98713, Fr Polynesia.
5 : Lab Excellence CORAIL, Moorea 98729, Fr Polynesia.
|Source||Fish & Shellfish Immunology (1050-4648) (Academic Press Ltd- Elsevier Science Ltd), 2016-11 , Vol. 58 , P. 82-88|
|WOS© Times Cited||12|
|Keyword(s)||Orbicular batfish, Asparagopsis taxiformis, Immunostimulant, Lysozyme G, Transforming growth factor, Relative gene expression|
|Abstract||The emerging orbicular batfish (Platax orbicularis) aquaculture is the most important fish aquaculture industry in French Polynesia. However, bacterial infections are causing severe mortality episodes. Therefore, there is an urgent need to find an effective management solution. Besides the supplying difficulty and high costs of veterinary drugs in French Polynesia, batfish aquaculture takes place close to the coral reef, where use of synthetic persistent drugs should be restricted. Medicinal plants and bioactive algae are emerging as a cheaper and more sustainable alternative to chemical drugs. We have studied the effect of local Polynesian plants and the local opportunistic algae Asparagopsis taxiformis on batfish when orally administered. Weight gain and expression of two immune-related genes (lysozyme g – Lys G and transforming growth factor beta - TGF-β1) were studied to analyze immunostimulant activity of plants on P. orbicularis. Results showed that several plants increased Lys G and TGF-β1 expression on orbicular batfish after 2 and 3 weeks of oral administration. A. taxiformis was the plant displaying the most promising results, promoting a weight gain of 24% after 3 weeks of oral administration and significantly increasing the relative amount of both Lys G and TGF-β1 transcripts in kidney and spleen of P. orbicularis.|