Thalassiosirales (Diatomeae) do rio Guaraguaçu, Bacia Litorânea, PR, Brasil

Tremarin, Priscila Izabel; Ludwig, Thelma Alvim Veiga; Filho, Hermes Moreira

doi:10.1590/s0102-33062008000400021

Cited by 21 publications

(12 citation statements)

References 12 publications

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“…Most of them have dealt with all diatom genera of periphytic community from the south and southeast regions of the country (Ludwig & Valente-Moreira 1990;Ludwig & Flôres 1995;Brassac et al 1999;Landucci & Ludwig 2005;Morandi et al 2006;Tremarin et al 2008;Tremarin et al 2012). Only four previous studies of diatoms have been performed in the state of Bahia: Zimmerman (1913-1919 recorded approximately 200 marine and freshwater species; Moreira-Filho et al (1995) recorded 92 marine and estuarine diatoms; and recently, two endemic species of Perinotia Metzeltin et Lange--Bertalot were recorded in the Chapada Diamantina region (Metzeltin & Lange-Bertalot 2007;Ferrari et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Taxonomic studies of centric diatoms (Diatomeae): unusual nanoplanktonic forms and new records for Brazil

2013

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There have been few taxonomic studies of centric diatoms in lotic freshwater environments in Brazil, especially in terms of those including nanoplanktonic forms, which are often neglected in studies of local floras, because of their small size or confusing taxonomy. This is the first study focusing on centric diatoms in the flora of the state of Bahia, in northeastern Brazil. Plankton and periphyton attached to Eichornia crassipes were collected in the winter of 2009 in the Cachoeira River. The diatoms were analyzed and described under light and electron microscopies. Seventeen infrageneric taxa were identified. Cyclotella was represented by five taxa, and concerning of similarities between diacritical features of species in this genus, their descriptions were thoroughly detailed. This was the first time that Cyclotella atomus var. marina, previously recorded only in coastal areas of Japan and Korea, has been documented in a river in South America. We also identified two diatom taxa previously unrecorded in the flora of Brazil: C. cryptica and C. meduanae. Finally, we present a detailed light, transmission and scanning electron microscopy analysis of Skeletonema potamos, a diatom rarely found in the Brazilian literature.

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Section: Introductionmentioning

confidence: 99%

Taxonomic studies of centric diatoms (Diatomeae): unusual nanoplanktonic forms and new records for Brazil

2013

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“…Comentário: no material da baía de Guaratuba, o número de fultopórtulas no anel marginal da valva excedeu o registrado na literatura para a espécie (4-6 em 10 μm) (Hasle 1979), porém valores mais elevados também foram encontrados por Tremarin et al (2008) (5-10 em 10 μm) por ocasião da análise de amostras do estuário do rio Guaraguaçu, no litoral do Paraná.…”

Section: Família Thalassiosiraceaeunclassified

“…Contudo, fato semelhante ocorreu com Tremarin et al (2008) Figuras 15 e 16 Valvas circulares; superfície valvar pouco côncava; aréolas arredondadas em distribuição radial, com exceção das centrais que são maiores e distribuídas em padrão irregular; anel de fultopórtulas marginal; rimopórtulas marginais inconspícuas. Diâmetro: 10-16 μm; 14-20 aréolas em 10 μm; 4-6 fultopórtulas em 10 μm na margem.…”

Section: Família Thalassiosiraceaeunclassified

“…Desde então, outros autores deram continuidade a estudos envolvendo diatomáceas paranaenses, sendo que atualmente já foram registradas 38 espécies de Thalassiosirales para o Estado (Procopiak et al 2006). A ordem Thalassiosirales do rio Guaraguaçu, um ambiente estuarino da região litorânea do Paraná foi estudada por Tremarin et al (2008), tendo encontrado 28 espécies, sendo 23 delas consideradas marinhas e/ou estuarinas.…”

Section: Introductionunclassified

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Thalassiosirales (Diatomeae) da baía de Guaratuba, Estado do Paraná, Brasil

et al. 2010

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LEHMKUHL, E.A., TREMARIN, P.I., MOREIRA-FILHO, H. & LUDWIG, T.A.V. Thalassiosirales (Diatomeae) from Guaratuba bay, Paraná state, Brazil. Biota Neotrop. 10(2): http://www.biotaneotropica.org.br/v10n2/en/ abstract?inventory+bn03310022010.Abstract: A survey of the Thalassiosirales from three different regions of Guaratuba bay resulted in the identification of 28 infrageneric taxa. The samples were collected every three months from April 2007 to January 2008. The taxa were described and illustrated by optical. Some of them were illustrated by scanning electron micrographs. Taxonomic comments were added when relevant. Thalassiosira cedarkeyensis was first recorded to Brazil and two Thalassiosira ferelineata and T. minuscula were new citations to Parana state. Comparing the occurrence of Thalassiosirales representatives from 1961's previous work 23 species were added to the flora. Based on literature informations, only four species were considered from freshwater habitat, Discostella stelligera, Cyclotella meneghiniana, Cyclostephanos invisitatus and Thalassiosira rudis, the others were marine or estuarine.

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“…Contribuições mais numerosas foram disponibilizadas por pesquisadores do estado paranaense, sendo as mais recentes: Landucci & Ludwig (2005), Ferrari & Ludwig (2007), Tremarin et al (2008aTremarin et al ( , 2008bTremarin et al ( , 2009Tremarin et al ( , 2010.…”

Section: Introductionunclassified