Melosira (Diatomeae) taxa from the Iguaçu River in southern Brazil

Margaret Seghetto Nardelli; Priscila Izabel Tremarin; Thelma Alvim Veiga Ludwig; Norma Catarina Bueno

Melosira (Diatomeae) taxa from the Iguaçu River in southern Brazil

Authors

Margaret Seghetto Nardelli Universidade Estadual do Oeste do Paraná
Priscila Izabel Tremarin Universidade Federal do Paraná, Departamento de Botânica
Thelma Alvim Veiga Ludwig Universidade Federal do Paraná, Departamento de Botânica
Norma Catarina Bueno Universidade Estadual do Oeste do Paraná

Keywords:

diatoms, southern Brazil, taxonomy, ultrastructure

Abstract

Abstract The study of the genus Melosira in plankton samples from the lower Iguaçu River revealed the presence of four taxa: Melosira undulata (Ehrenberg) Kützing var. undulata, M. undulata var. normanni Arnott, M. varians C. Agardh and M. muscigena Iwahashi. We present illustrations of the frustules using light microscopy (LM), descriptions, and comments about the morphology of the four taxa. The analysis of Melosira muscigena under scanning electron microscopy revealed unprecedented details of the ultrastructure, such as the shape and distribution of the rimoportulae at the valve mantle. This is the first record of Melosira undulata var. undulata and the second of M. muscigena in Brazil.

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2016-01-01

How to Cite

Nardelli, M. S., Tremarin, P. I., Ludwig, T. A. V., & Bueno, N. C. (2016). Melosira (Diatomeae) taxa from the Iguaçu River in southern Brazil. Biota Neotropica, 16(4). Retrieved from //www.biotaneotropica.org.br/BN/article/view/1422

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Vol. 16 No. 4 (2016): v16n4

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Melosira (Diatomeae) taxa from the Iguaçu River in southern Brazil

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