Development of the embryo, larva and early juvenile of Nile tilapia Oreochromis niloticus (Pisces: Cichlidae). Developmental staging system

摘要: We described the developmental stages for embryonic, larval and early juvenile periods of Nile tilapia Oreochromis niloticus to elucidate sequential events craniofacial development. Craniofacial development cichlids, especially differentiation morphogenesis pharyngeal skeleton, progresses until about 30 days postfertilization (dpf). Because there is no comprehensive report describing processes up 30 dpf, we newly defined 32 using a numbered staging system. For embryonic development, 18 (stages 1–18), which were grouped into seven named zygote, cleavage, blastula, gastrula, segmentation, pharyngula hatching periods. 19–25), two periods, late larval. 26–32) in period. This system O. will benefit researchers investigating skeletogenesis throughout ontogeny also facilitate comparative evolutionary biology studies haplochromine comprise species flocks Lakes Malawi Victoria.