Freshwater hyphomycetes in a preserved insular system from Brazil: first records at the Parque Estadual da Ilha do Cardoso, municipality of Cananéia, São Paulo State, Brazil

Abstract

(Freshwater hyphomycetes in a preserved insular system from Brazil: first records at Parque Estadual da Ilha do Cardoso, municipality of Cananéia, São Paulo State). To survey freshwater hyphomycetes from insular water bodies at the Parque Estadual da Ilha do Cardoso State Park, in Cananéia municipality, São Paulo State, Brazil, submerged mixed leaf litter samples were collected from six sites from June 2012 to February 2013. The samples were taken to the laboratory and incubated in Petri dishes containing sterile distilled water at room temperature (20oC). From the 5th day on, until at least one month, fragments of the leaf litter samples were examined under the microscope, resulting in the morphological identification of 33 taxa. Among those, two are new records for the state of São Paulo and four for Brazil. Descriptions and pictures of each new record are presented.

Diversity of hyphomycetes on submerged leaf litter in two Atlantic Forest areas in the Northeast of Brazil with comments on the water quality

“…The range of variation of abiotic variables detected in this work fell within the ranges of studies in tropical streams (Bärlocher et al, 2010;Fernández et al, 2017;Fiuza et al, 2019;Moro & Schoenlein-Crusius, 2020). Four water variables are commonly discussed in studies of aquatic hyphomycetes (DO, EC, pH and temperature).…”

“…Oliveira (2016) and Rasvailer et al (2020) were able to detect aquatic hyphomycetes at low concentrations of DO. However, it was at higher concentrations, although below the values determined by Ordinance Nº 2914/2011 , that Moro & Schoenlein-Crusius (2020) were able to identify 39 species of hyphomycetes.…”

“…Ingoldian hyphomycetes are often found in well-aerated water, notably Flagellospora spp. and Triscelophorus monosporus (Bärlocher et al, 2010;Schoenlein-Crusius et al, 2015;Moro & Schoenlein-Crusius, 2020). The DO is important for the occurrence of other organisms in the water; therefore, CONAMA Resolution 357/2005 establishes that, in any sample, the concentrations of DO should not be lower than 6 mg.L -1 O 2 (Brasil, 2005).…”

“…Several studies have related temperature to the occurrence of hyphomycetes: Chauvet & Suberkropp (1998) discussed that temperature may be a factor that selects certain species of hyphomycetes while Fernandes et al (2009) found that changes in temperature altered the composition of fungal species and led to changes in leaf litter decomposition. Moro & Schoenlein-Crusius (2020) reported that temperature influenced the amount of hyphomycetes identified on an island in southeastern Brazil, and found more frequently Triscelophorus monosporus, Lunulospora curvula, and Tripospermum camelopardus in a temperature range between 18 °C and 24 °C.…”