Ocorrência de dois citotipos em Serrasalmus spilopleura Kner, 1858 (characiformes, serrasalmidae) da região de confluência dos Rios Negro e Solimões, Amazonas, Brasil

  title={Ocorr{\^e}ncia de dois citotipos em Serrasalmus spilopleura Kner, 1858 (characiformes, serrasalmidae) da regi{\~a}o de conflu{\^e}ncia dos Rios Negro e Solim{\~o}es, Amazonas, Brasil},
  author={C. M. Nakayama and J. Porto and E. Feldberg},
  journal={Acta Amazonica},
  • C. M. Nakayama, J. Porto, E. Feldberg
  • Published 2000
  • Biology
  • Acta Amazonica
  • The karyotype of Serrasalmus spilopleura from the Central Amazon is reported here for the first time. All analized individuals showed 60 chromosomes, as observed in previously published karyotypes of this species from the Parana-Paraguai basin. However, two different cytotypes were found in sites near the confluence of the Negro and Solimoes rivers, where the specimens were collected. Such karyotypic differences were not related to sex differentiation. Moreover, the two amazon cytotypes are… CONTINUE READING
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