Oocyte resorption in the ovaries of sexually mature carp, which did not spawn, was investigated using a method of sampling ovaries in vivo. A 2‐year study revealed that a portion of the oocytes had undergone a slow resorption while the basic mass of the ovaries, throughout the experiment, consisted of the oocytes similar to those of stage IV of sexual maturity. At the same time no growth of the oocytes of the earlier maturation stages was found. The condition of the ovaries in the females studied indicated their complete infertility, at least for three successive spawning periods.
No takes yet. Share an insight, caveat, or question.
Bieniarz et al. (1976) studied this question.