Comasiella, Desmodesmus, Pectinodesmus e Scenedesmus na comunidade perifítica em ecossistema lêntico tropical, Brasil Central

Souza, Danúzia Batista da Silva e; Felisberto, Sirlene Aparecida

doi:10.1590/s2236-89062014000100010

Cited by 10 publications

(5 citation statements)

References 24 publications

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“…In general, the water of the Samambaia Reservoir is more turbid with the increased of biochemical oxygen demand, as well as a higher concentration of coliforms in the rainy season (Table 1, [8]). The climate in the study area is considered as tropical by according to Köppen classification [17].…”

Section: Methodsmentioning

confidence: 99%

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Characteristics and Diversity of Cyanobacteria in Periphyton from Lentic Tropical Ecosystem, Brazil

Felisberto¹,

Souza²

2014

AiM

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This study aimed to perform the taxonomic survey of the species of periphytic Cyanobacteria in a lentic tropical environment, seeking to contribute to the knowledge on biodiversity and their distribution. This study was conducted at the Samambaia Reservoir, which is located at Federal University of Goiás, Goiânia, Central West region of Brazil. In general, the water of the Samambaia Reservoir is characterized as more turbid and the increased biochemical oxygen demand as well as a higher concentration of coliforms in the rainy season. Twenty six samples were collected, ten in the dry season (09/2010 and 11/2010; 07/2012) and ten in the rainy season (01/2011 and 03/2011; 01/2013). Periphyton was collected from stems of aquatic plants (Cyperaceae), which were in the marginal area of the reservoir. With the floristic survey, 38 taxa of Cyanobacteria were identified in periphyton of the Samambaia Reservoir. Phormidium (family Phormidiaceae) and Aphanocapsa (Merismopediaceae) are among genera with the highest species richness. Regarding morphological types, many species of filamentous cyanobacteria were identified, followed by colonial taxa. In relation to the frequency of occurrence and the seasonal period, 14 taxa were classified in the rare category, 12 in common category and 12 in constant category. Regarding the seasonal period, Cyanophyceae were the greatest wealth in the rainy season (97.4%).

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Section: Methodsmentioning

confidence: 99%

“…Despite the significance of the amount of freshwater to Goiás Cerrado, there is little research on periphytic communities [2]- [8].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Diversity of Cyanobacteria in Periphyton from Lentic Tropical Ecosystem, Brazil

Felisberto¹,

Souza²

2014

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“…For the phytoplankton sampling, mesh net with 20 µm was used in horizontal trawls at the water surface (one point per zone), and fixed with formaldehyde (4%); and by direct collection in the photic zone, fixed with 1% acetic lugol, the material was subsequently identified according to current works (Sant'anna et al, 2006;Biolo et al, 2008;Dellamano-Oliveira et al, 2008;Menezes et al, 2011;Nogueira et al, 2011;Ramos et al, 2012;Rosini et al, 2013;Aquino et al, 2014;Souza & Felisberto, 2014;Alves-da-Silva & Klein, 2015), and counted according to Utermöhl (1958) methodology, in sedimentation chambers (Lund et al, 1958) and inverted microscope Zeiss (Axiovert 40C). The density of the phytoplankton community (cel.L -1 ) was obtained from the count of the organisms in relation to the area of the used sample container (INAG, I.P., 2009), following the Equation 1.…”

Section: Sampling and Analysis Of Samplesmentioning

confidence: 99%

Is it possible to evaluate the ecological status of a reservoir using the phytoplankton community?

et al. 2018

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Aim: The present study aims to evaluate the ecological status of the Broa reservoir through the application of the ecological index Evenness E2 on phytoplankton. Methods Phytoplankton samples from surface were obtained during the dry period (June/2015) in 9 points (P1 to P9), along a longitudinal transect in the reservoir. The qualitative analysis was performed using binocular optical microscope, and the quantitative analysis was performed using the sedimentation chamber method and inverted microscope analysis. The Uniformity Index was calculated on density and richness data. The reference values used in this study were set according to the literature covering 5 classifications (High, Good, Moderate, Low and Bad) for the water quality from Evenness E2 index for phytoplankton, being 1 the maximum value. Results The values observed ranged from 0.1142 in P1 to 0.1468 in P3, being both classified as “Bad”, since values were less than0.21. Conclusions The result reinforces the sanitary problem of the reservoir, the occurrence of consecutive algae blooms because the amount of nutrients in the region. A massive occurrence of Cyanobacteria was observed, with emphasis on the species Aphanizomenon gracile, which may be related to the adaptive advantages that this class presents on the community in eutrophic environments. Activities in the basin can contribute effectively to the eutrophication process of the reservoir, such as agriculture, sand mining and livestock. The water quality is compromised due to the dense presence of potentially toxic species, reflects of the eutrophication process, pointing commitments for the multiple uses of the reservoir, as well as human and ecosystem health. These processes could be corroborated by the application of the index and indication of poor water quality.

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“…The Pectinodesmus pectinatus (NCBI Taxonomy ID: 91197), formerly named as Scenedesmus pectinatus, is a species of chlorophycean algae in the family Scenedesmaceae and a common and important planktonic microalgae distributed globally in ponds, lakes, ditches, small puddles, various cultivation tanks and other water bodies all over the world [24,25]. P. pectinatus is rarely single-celled and usually composed of four to eight cells, sometimes dozens of cells [26].…”

Section: Introductionmentioning

confidence: 99%

Structure and Phylogeny of Chloroplast and Mitochondrial Genomes of a Chlorophycean Algae Pectinodesmus pectinatus (Scenedesmaceae, Sphaeropleales)

Zhao

Liu

et al. 2022

Life

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Pectinodesmus pectinatus is a green alga of commercial interest in sewage purification. Clarification of its organelle genomes is helpful for genetic manipulation, taxonomic revisions and evolutionary research. Here, de novo sequencing was used to determine chloroplast genome and mitochondrial genome of P. pectinatus strain F34. The chloroplast genome was composed of a large single-copy (LSC) region of 99,156 bp, a small single-copy (SSC) region of 70,665 bp, and a pair of inverted repeats (IRs) with a length of 13,494 bp each separated by LSC and SSC. The chloroplast genome contained 69 protein-coding genes, 25 transfer-RNA (tRNA) genes, 3 ribosomal RNA (rRNA) genes. The mitochondrial genome was 32,195 bp in length and consisted of 46 unique genes, including 16 protein-coding genes, 27 tRNA genes and 3 rRNA genes. The predominant mutations in organelle genomes were T/A to G/C transitions. Phylogenic analysis indicated P. pectinatus was a sister species to Tetradesmus obliquus and Hariotina sp. within the Pectinodesmus genus. In analysis with CGView Comparison Tool, P. pectinatus organelle genomes displayed the highest sequence similarity with that of T. obliquus. These findings advanced research on the taxonomy and phylogeny of Chlorophyceae algae and particularly revealed the role of P. pectinatus in microalgae evolution.

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Comasiella, Desmodesmus, Pectinodesmus e Scenedesmus na comunidade perifítica em ecossistema lêntico tropical, Brasil Central

Cited by 10 publications

References 24 publications

Characteristics and Diversity of Cyanobacteria in Periphyton from Lentic Tropical Ecosystem, Brazil

Characteristics and Diversity of Cyanobacteria in Periphyton from Lentic Tropical Ecosystem, Brazil

Is it possible to evaluate the ecological status of a reservoir using the phytoplankton community?

Structure and Phylogeny of Chloroplast and Mitochondrial Genomes of a Chlorophycean Algae Pectinodesmus pectinatus (Scenedesmaceae, Sphaeropleales)

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