Gomphonema Ehrenberg (Bacillariophyceae, Gomphonemataceae) of the São Francisco Falso River, Paraná, Brazil

Authors

  • Gabriela Medeiros Universidade Estadual do Oeste do Paraná, Centro de Ciências Biológicas e da Saúde https://orcid.org/0000-0002-5444-3064
  • Mailor Wellinton Wedig Amaral Universidade Estadual do Oeste do Paraná, Centro de Ciências Biológicas e da Saúde
  • Paula Carolina Ferreira Universidade Federal do Paraná
  • Thelma Veiga Ludwig Universidade Federal do Paraná https://orcid.org/0000-0003-0576-3499
  • Norma Catarina Bueno Universidade Estadual do Oeste do Paraná, Centro de Ciências Biológicas e da Saúde

Keywords:

Lotic environment, diatoms, taxonomy, ultrastructure

Abstract

Abstract: Gomphonema Ehrenberg is a genus well represented in periphytic algal flora of epicontinental environments. The substrate colonization is facilitated by the secretion of mucilage by the pore field, allowing cell adhesion. Samples were scraped off and analyzed from vegetative portions of the macrophyte Eichhornia azurea Kunth, collected in São Francisco Falso River, located in Santa Helena City, Paraná State. The sampling occurred in four different sites, in four different periods, totaling 16 samples. The quantitative material analysis resulted in 28 identified taxa, in which Gomphonema brasiliense ssp. pacificum, Gomphonema neoapiculatum Lange-Bertalot, Reichardt & Metzeltin Gomphonema pantropicum Reichardt and Gomphonema perapicatum Metzeltin & Lange-Bertalot represented pioneer citations for Paraná diatomflorula. The ultrastructure observations of some species were crucial to distinguish a few taxa, as Gomphonema brasiliense and Gomphonema brasiliensoide D. Metzeltin, Lange-Bertalot & F. García-Rodríguez. We suggest future studies in this environment, once it has propitious characteristics to the development of epilithic diatoms. Moreover, phylogenetic studies are also recommended for a better distinction of taxa with a wide morphologic variation.

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Published

2018-01-01

How to Cite

Medeiros, G., Amaral, M. W. W., Ferreira, P. C., Ludwig, T. V., & Bueno, N. C. (2018). Gomphonema Ehrenberg (Bacillariophyceae, Gomphonemataceae) of the São Francisco Falso River, Paraná, Brazil. Biota Neotropica, 18(3). Retrieved from //www.biotaneotropica.org.br/BN/article/view/1525

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