Sukhodol'skaia A N, Ivanova L V
Arkh Anat Gistol Embriol. 1980 Dec;79(12):80-8.
Development of small fragments taken from the body of some Spongillidae (Halichondria panicea, Spongilla lacustris) was studied during various periods of their reproductive cycle. Reconstructive morphogenesis of fresh-water sponges from small pieces of their body tissue took 5-7 days and did not depend on the stage of the reproductive cycle in the maternal organism. Form-restoring potentials in marine reproductive sponges were different. The least potentials for the development into new species were noted in the fragments containing oocytes at stages of vitellogenesis, embryos and larvae. The sponge fragments having embryos and larvae perished before they began to develop. Restorative morphogenesis of the fragments having oocytes at the stage of vitellogenesis lasted two months, while the development of the fragments having oogonia and oocytes at early stages of development transformed into a young sponge during two weeks. The fate of oocytes, embryos and larvae under conditions of restorative morphogenesis was different: oogonia and oocytes at early stages of development were preserved, while oocytes at the stage of vitellogenesis and embryos were mostly resorbed. Most of larvae completed their embryogenesis, however, if they were lesioned, external and internal larval cells could participate in the restorative process.
研究了取自某些针海绵科（泛白海绵、湖海绵）身体的小碎片在其生殖周期不同阶段的发育情况。淡水海绵身体组织小块的重建形态发生需要5至7天，且不依赖于母体生物的生殖周期阶段。海洋生殖海绵的形态恢复潜力则有所不同。在含有处于卵黄发生期、胚胎和幼虫阶段卵母细胞的碎片中，发育成新个体的潜力最小。含有胚胎和幼虫的海绵碎片在开始发育前就死亡了。处于卵黄发生期的含有卵母细胞的碎片的恢复性形态发生持续两个月，而含有处于发育早期的卵原细胞和卵母细胞的碎片在两周内发育成幼海绵。在恢复性形态发生条件下，卵母细胞、胚胎和幼虫的命运各不相同：发育早期的卵原细胞和卵母细胞得以保留，而处于卵黄发生期的卵母细胞和胚胎大多被吸收。大多数幼虫完成了胚胎发育，然而，如果它们受到损伤，外部和内部的幼虫细胞可以参与恢复过程。
