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Ultrastructure of the germ cells in the testis of matrinxã, Brycon cephalus (Gunther, 1869) (Teleostei, Characidae)
Romagosa, E.; Narahara, M.Y.; Borella, M.I.; Parreira, S.F.; Fenerich-Verani, N. (2000). Ultrastructure of the germ cells in the testis of matrinxã, Brycon cephalus (Gunther, 1869) (Teleostei, Characidae), in: Norberg, B. et al. (Ed.) Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. pp. 261
In: Norberg, B. et al. (2000). Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. International Symposium on the Reproductive Physiology of Fish, 6. Department of Fisheries and Marine Biology, University of Bergen: Bergen. ISBN 82-7461-048-2. 499 pp., meer
In: International Symposium on the Reproductive Physiology of Fish. Museo Nacional de Ciencias Naturales. , meer
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  • Romagosa, E.
  • Narahara, M.Y.
  • Borella, M.I.
  • Parreira, S.F.
  • Fenerich-Verani, N.
Abstract
    This study describes the germ cells in the testis of matrinxa raised in captivity at the ultrastructural level. This study was developed at the CEPAR, from Fishery Institute, in Pariquera-Acu City in Sao Paulo, Brazil (24 degree 43' S and 47 degree 53'W). The testes have been classifield as testis tubular unrestricted spermatogonial type, where 4 spermatogenic cells phases can be distinguished: spermatogonia, spermatocytes, spermatids and spermatozoa.
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