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Actinella species (Bacillariophyta) from an Amazon black water floodplain lake (Amazonas - Brazil)

2010; INSTITUTO NACIONAL DE PESQUISAS DA AMAZÔNIA; Volume: 40; Issue: 2 Linguagem: Inglês

10.1590/s0044-59672010000200004

ISSN

1809-4392

Autores

Sérgio Melo, Lezilda Carvalho Torgan, Stela Valenti Raupp,

Tópico(s)

Fish biology, ecology, and behavior

Resumo

The genus Actinella Lewis was studied using planktonic samples from a black water floodplain lake in Central Amazon region. For species identification the taxa were morphological and morphometricaly analyzed on base in light microscope (LM) and scanning electronic microscope (SEM). Five species were registered: Actinella brasiliensis Grunow, A. guianensis Grunow, A. gracile Kociolek, A. mirabilis (Eulenstein ex Grunow) Grunow and A. robusta Hustedt. A. gracile is reported for the first time for Amazon State and black water systems and it is firstly documented with SEM. In addition, a review of geographic distribution of Actinella species in Brazilian Amazon region is given.

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