Reproductive capacities in the polyploid males of spined loaches from the unisexual-bisexual complex, occurred in the Moscow River.

@article{Vasilev2003ReproductiveCI,
  title={Reproductive capacities in the polyploid males of spined loaches from the unisexual-bisexual complex, occurred in the Moscow River.},
  author={Victor P Vasil'ev and Nina V Akimova and Natalya G Emel'yanova and Dmitry A Pavlov and Ekaterina D Vasil'eva},
  journal={Folia biologica},
  year={2003},
  volume={51 Suppl},
  pages={67-73}
}
The unisexusal-bisexual complex of spined loaches from genus Cobitis, occurred in the Moscow River, includes two tetraploid forms. One of them consists of males and females. The studies of spermatogenesis as well as spermatozoa mobility and ultrastructure, of these males were performed simultaneously with experimental crosses to define their reproductive capacities. The testis visually looked undeveloped in the most of cases. The study of spermatogenesis revealed that they reached the stage of… CONTINUE READING

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Making it on their own: sperm-dependent hybrid fishes (Cobitis) switch the sexual hosts and expand beyond the ranges of their original sperm donors.

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