Payame Noor University Experimental animal Biology 2322-2387 5 2 2016 11 21 Review stages of embryonic development stage hatching of the Sepia pharaonis Review stages of embryonic development stage hatching of the Sepia pharaonis 25 33 3199 FA Meysam Golzar . MSc., Proliferation and aquaculture, Science and Research Branch of Tehran (Kurdistan), Sanandaj, Iran Tooraj Valinasab . Professor, Iranian Fisheries Research Organization, Iran Mehrdad Shirin Abadi Assistant Professor, Department of Fisheries, Islamic Azad University, Science and Research, Kurdistan, Sanandaj, Iran Mahmood Hafeziyeh Associate Professor, Iranian Fisheries Research Organization, Iran Journal Article 2016 12 10 The various stages of embryonic growth pharaoh´s cuttlefish (<em>Sepia</em> <em>pharaonis</em>) reside in Oman until hatching was studied. Gregor tours and the eggs collected for further study of the propagation of Education, Research Center of the Earth - Chabahar Moved .once every 24 hours to get detailed information was sampling of from fertilized eggs. Egg size of 11±4 mm were selected because of the large size of cuttlefish eggs during incubation stages of embryonic development within the capsule is visible. The studies showed that the water temperature of 20±2°C hatching takes about 20±10 days. In this study results showed that the first cleavage was performed on the first day and the 15th day after the yolk sac has started to decrease. Tentacle is visible on day 14. Cuttlefish in all developmental stages of the embryonic development of a model to follow, but the temperature plays an important role in hatching time. <br />  The various stages of embryonic growth pharaoh´s cuttlefish (<em>Sepia</em> <em>pharaonis</em>) reside in Oman until hatching was studied. Gregor tours and the eggs collected for further study of the propagation of Education, Research Center of the Earth - Chabahar Moved .once every 24 hours to get detailed information was sampling of from fertilized eggs. Egg size of 11±4 mm were selected because of the large size of cuttlefish eggs during incubation stages of embryonic development within the capsule is visible. The studies showed that the water temperature of 20±2°C hatching takes about 20±10 days. In this study results showed that the first cleavage was performed on the first day and the 15th day after the yolk sac has started to decrease. Tentacle is visible on day 14. Cuttlefish in all developmental stages of the embryonic development of a model to follow, but the temperature plays an important role in hatching time. <br />  https://eab.journals.pnu.ac.ir/article_3199_b26fc05c8ce8a617df1e24449ace9fe0.pdf