| 41. | Reproduction in the Tasmanian numbfish is viviparous, with the developing embryos nourished to term via their yolk sacs.
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| 42. | This species is ovoviviparous, meaning that the young hatch inside the uterus and are nourished by a yolk sac.
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| 43. | One to four, but usually two pups are retained in the uterus, where they feed from a yolk sac.
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| 44. | The placenta structure is derived from the wall of the embryonic yolk sac that has fused with the uterine wall.
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| 45. | When the rearing habitat is reached, the larvae typically take around 25 days for the yolk sac to be absorbed.
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| 46. | PGCs come from the epiblast and migrate subsequently into the mesoderm, the endoderm and the posterior of the yolk sac.
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| 47. | Inside the embryo, the dorsal aorta forms and eventually connect the heart to the capillary plexus of the yolk sac.
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| 48. | The larvae are long at hatching, with a small yolk sac that is absorbed by the time the larva reaches.
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| 49. | Depending on the species, froglets hatch with or without the tail fully absorbed but with the yolk sac still visible.
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| 50. | Specialized primordial germ cells are forming and migrating from the yolk sac to the embryonic gonads during week eight and nine.
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