Piabina argentea, Reinhardt, 1867

Baicere-Silva, Clarianna Martins, Ferreira, Katiane M., Malabarba, Luiz R., Benine, Ricardo C. & Quagio-Grassiotto, Irani, 2011, Spermatic characteristics and sperm evolution on the subfamily Stevardiinae (Ostariophysi: Characiformes: Characidae), Neotropical Ichthyology 9 (2), pp. 377-392: 383

publication ID

http://doi.org/ 10.1590/S1679-62252011005000014

persistent identifier


treatment provided by


scientific name

Piabina argentea


Piabina argentea   ( Fig. 14 View Fig A-E)

In the spermatozoon of Piabina argentea   the ovoid nucleus measures 1.52  m in the longitudinal axis and 1.2  m in the transverse axis. The surrounding strip of cytoplasm has no organelles ( Fig. 14A View Fig ). Nuclear rotation toward the flagellar axis was about 85 degrees ( Fig. 14A View Fig ). The midpiece has a conical shape, measures about 0.6  m in length and contains some elongate mitochondria ( Fig. 14A View Fig ,C-E). Information on the endomembrane system is not available, since the specimens of P. argentea   have been obtained from ichthyological collections and the gonads were not appropriately preserved for ultrastructural analysis.