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Embryonic development of Cuban gar (Atractosteus tristoechus) under laboratory conditions
Y Comabella1, J Canabal, A Hurtado
1Centro de Investigaciones Marinas, Universidad de la Habana, Calle 16 # 114 e/1ra y 3ra, Miramar, Playa, Cuba.
Abstract:
The embryonic development of Cuban gar (Atractosteus tristoechus) was described under controlled laboratory conditions. During the whole embryogenesis seven periods were defined: the zygote (0-½ h), cleavage (¾-4 h), blastula (5-10 h), gastrula (12-20 h), segmentation (24-40 h), pharyngula (48-66 h) and hatching (72-96 h) periods. The stages were based on morphological features, generally readily identified by examination of the embryo with the dissecting stereomicroscope. Hatching occurred 96 ± 4 h after spawning at 28°C.
