Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional

BIBTEX RIS

Plasma ion levels of freshwater and marine/estuarine teleosts from Southern Brazil

2011; Sociedade Brasileira de Ictiologia; Volume: 9; Issue: 4 Linguagem: Inglês

10.1590/s1679-62252011005000039

1982-0224

Alexssandro Geferson Becker, Jamile F. Gonçalves, Jaderson dos Anjos Toledo, Marcelo D. M. Burns, Luciano Garcia, João P. Vieira, Bernardo Baldisserotto,

Fish biology, ecology, and behavior

The purpose of this study was to investigate Na+, Cl-, K+, Ca2+, and Mg2+ levels in the plasma of freshwater and marine/estuarine teleosts collected at different salinities (0 to 34) from the estuarine and freshwater portions of the São Gonçalo channel in Southern Brazil. Any relationship between plasma ion levels and salinity and the capacity of ionic regulation of teleosts found at three or more different salinities (Genidens barbus and Micropogonias furnieri) was also investigated. Results showed no relationship between plasma ion levels and salinity when considering all species together, but the two species collected from three or more different salinities showed a significant positive relationship between plasma ion levels and salinity, indicating that G. barbus and M. furnieri have a high capacity to regulate plasma ion levels at both low and high salinities.