Nupela species (Naviculales: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp.

The genus Nupela comprises ca. 50 species that generally have a distribution restricted by bioclimatic frontiers. As part of an integrated analysis of the diatom flora of Colombia, in this study we focused our interest on the genus Nupela from lowland waters. Periphyton samples were collected from 1...

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Detalles Bibliográficos
Autores principales: Sala, Silvia Estela, Vouilloud, Amelia, Plata Díaz, Yasmín, Pedraza, Edna
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Botánica
Nupela
Nupela acaciensis
Nupela catatumbensis
Diatoms
Bacillariophyceae
Neotropics
Colombia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/105193
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-105193
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Botánica
Nupela
Nupela acaciensis
Nupela catatumbensis
Diatoms
Bacillariophyceae
Neotropics
Colombia
spellingShingle Botánica
Nupela
Nupela acaciensis
Nupela catatumbensis
Diatoms
Bacillariophyceae
Neotropics
Colombia
Sala, Silvia Estela
Vouilloud, Amelia
Plata Díaz, Yasmín
Pedraza, Edna
Nupela species (Naviculales: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp.
topic_facet Botánica
Nupela
Nupela acaciensis
Nupela catatumbensis
Diatoms
Bacillariophyceae
Neotropics
Colombia
description The genus Nupela comprises ca. 50 species that generally have a distribution restricted by bioclimatic frontiers. As part of an integrated analysis of the diatom flora of Colombia, in this study we focused our interest on the genus Nupela from lowland waters. Periphyton samples were collected from 150 sites of lotic water bodies in Colombia, taking into account hidrogeomorfological variability. In each sampling station, periphyton samples were obtained by scraping, and temperature, pH, dissolved oxygen and conductivity variables were measured. Samples were processed by both light microscopy (LM; Carl Zeiss Axio Scope.A1) and scanning electron microscopy (SEM; FEI-Quanta 450 and a Jeol JSM-6360 LV). The genus Nupela was found in 28 sites. Five taxa were identified, described and illustrated from tropical or subtropical environments: N. lesothensis, N. praecipua y N. subpallavicinii; these were new records for Colombia, and N. acaciensis and N. catatumbensis two new species for science. N. acaciensis is characterized by raphe branches of both valves equally long combined with cymbelloid symmetry, striae built by 2 transapically elongated areolae that delimit a longitudinal line at each hemivalve. N. catatumbensis is characterized by the presence of a well developed raphe in both valves; valves lanceolate with subcapitated to capitated ends and cymbelloid symmetry, striae built by 3-4 transapically elongated areolae, interestriae elevated as transapical ribs and internal proximal raphe ends hook-shaped. The genus Nupela was widely distributed in the studied basins but showed different distribution patterns: N. acaciensis and N. subpallavicini had a restricted distribution, while N. catatumbensis, N. lesothensis and N. praecipua had a wider distribution, and were collected in sites with significant variations in their ecomorphology, altitude, temperature, pH and electrolyte content.
format Articulo
Articulo
author Sala, Silvia Estela
Vouilloud, Amelia
Plata Díaz, Yasmín
Pedraza, Edna
author_facet Sala, Silvia Estela
Vouilloud, Amelia
Plata Díaz, Yasmín
Pedraza, Edna
author_sort Sala, Silvia Estela
title Nupela species (Naviculales: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp.
title_short Nupela species (Naviculales: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp.
title_full Nupela species (Naviculales: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp.
title_fullStr Nupela species (Naviculales: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp.
title_full_unstemmed Nupela species (Naviculales: Bacillariophyceae) from Colombian lowland waters including N. acaciensis nov. sp. and N. catatumbensis nov. sp.
title_sort nupela species (naviculales: bacillariophyceae) from colombian lowland waters including n. acaciensis nov. sp. and n. catatumbensis nov. sp.
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/105193
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