Breakdown of the sperm nuclear envelope is a prerequisite for male pronucleus formation: direct evidence from the gynogenetic crucian carp Carassius auratus langsdorfii.

@article{Yamashita1990BreakdownOT,
  title={Breakdown of the sperm nuclear envelope is a prerequisite for male pronucleus formation: direct evidence from the gynogenetic crucian carp Carassius auratus langsdorfii.},
  author={Michiaki Yamashita and H Onozato and Tomoko Nakanishi and Yoshitaka Nagahama},
  journal={Developmental biology},
  year={1990},
  volume={137 1},
  pages={155-60}
}
The gynogenetic fish, Carassius auratus langsdorfii (the ginbuna, a crucian carp), provides an interesting model for the study of the mechanisms controlling male pronucleus formation. When the sperm nucleus of a different subspecies (C. a. cuvieri) is incorporated into the gynogenetic egg, the nuclear envelope of the spermatozoon is not broken down, and the… CONTINUE READING