Dear Mercedes,
I didnt check in my work the exact moment where the swim bladder separates from the digestive tract, but you will find some good information in this paper:
SARASQUETE M.C., POLO A., YUFERA M., 1995. Histology and histochemistry of the development of the digestive system of larval gilthead seabream, Sparus aurata L.. AQUACULTURE 130 (1995) 79-92
I can, if you need, send you over some papers of our laboratory on liver and pancreas organogenesis in Sparus aurata, Dicentrarchus labrax and Stizostedion lucioperca.
cheers - Alois
><> ><> ><> ><> <>< ><> ><> Alois Maurizi Laboratoire de biologie animale (cc.102) ><> ><> Université Montpellier II 34095 Montpellier - cedex 5 ><> ><> France
Tel. ++33-04.67.14.36.77 Fax. ++33-04.67.14.36.75 ou 04.67.14.35.95 <><
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