Abstract
Four samplings were carried out during the dry and rainy seasons in 2014, in two biotopes (plankton and aquatic macrophytes) to assess the composition and species richness of testate amoebae community in a coastal stream in the state of Rio de Janeiro, Brazil. Results showed great representation of Difflugiidae, Centropyxidae, Lesquereusiidae and Arcellidae families. Higher richness was observed in the plankton samples and higher densities of testate amoebae were reported among the aquatic vegetation during the dry season. Current investigation is a pioneer study conducted in the Ubatiba stream. Further researches on these protists, especially in Rio de Janeiro, should be undertaken.
Highlights
Testate amoebae is a term used to designate amoeboid protozoa organisms whose protoplasm is inserted into a teak
Testate amoebae have been studied in different biotopes of freshwater ecosystems of Brazil (LANSAC-TÔHA et al, 2008; TODOROV et al, 2009), there are few studies focusing exclusively on testate amoebae in coastal environments, especially
Considering the importance of testate amoebae in the various biotopes and the lack of studies related to these protozoa, especially in the state of Rio de Janeiro, current study evaluates the composition and species richness of testate amoebae
Summary
Testate amoebae is a term used to designate amoeboid protozoa organisms whose protoplasm is inserted into a teak (shell). They present an oral opening from where pseudopods protrude during feeding and locomotion (SMIT et al, 2008). Testate amoebae have been studied in different biotopes of freshwater ecosystems of Brazil (LANSAC-TÔHA et al, 2008; TODOROV et al, 2009), there are few studies focusing exclusively on testate amoebae in coastal environments, especially. Considering the importance of testate amoebae in the various biotopes and the lack of studies related to these protozoa, especially in the state of Rio de Janeiro, current study evaluates the composition and species richness of testate amoebae. Current investigation provides in-depth additional knowledge on the biodiversity of these organisms in Brazil
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