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Title: Morphology and ecology of Fragilaria misarelensis sp. nov. (Bacillariophyta), a new diatom species from southwest of Europe
Authors: Novais, Maria Helena
Almeida, Salomé
Blanco, Saúl
Delgado, Cristina
Keywords: Diatoms
Geometric morphometry
Type material
Issue Date: 29-Jan-2019
Publisher: Taylor & Francis Group
Citation: Maria Helena Novais, Salomé F.P. Almeida, Saúl Blanco & Cristina Delgado (2019) Morphology and ecology of Fragilaria misarelensis sp. nov. (Bacillariophyta), a new diatom species from southwest of Europe, Phycologia, 58:2, 128-144, DOI: 10.1080/00318884.2018.1524245
Abstract: A new freshwater diatom species was described from southwest Europe (Portugal), based on morphological andultrastructuralcharacteristics. Fragilaria misarelensis Almeida, C.Delgado, Novais & S.Blanco is characterised by lanceolate valves, with slightly capitate ends, alternate striae and lacking spines joining adjacent cells, which are solitary. The valve shape of Fragilaria misarelensis, when compared to similar forms, is unique, as revealed by a thorough literature survey of Fragilaria species, geometric morphometry and discriminant analysis. Fragilaria misarelensis sp. nov. was frequent and abundant in central Portugal, in poorly mineralized watercourses under low anthropogenic influence, characterised by neutral pH, low conductivity and high dissolved oxygen concentration. The analysis of type material belonging to similar species, Fragilaria capucina fo. sublanceolata-baikali, F. capucina fo. lanceolata-baikali and F. nevadensis, contributed to improving their characterisation and illustration, also supporting the delimitation of the new Portuguese species. Fragilaria capucina fo. sublanceolata-baikali and F. capucina fo. lanceolata-baikali were considered to differ substantially from F. capucina and raised to species level as Fragilaria sublanceolata-baikali (Flower & D.M.Williams) Novais, C.Delgado & S.Blanco, comb. et stat. nov. and Fragilaria lanceolata-baikali (Flower & D.M.Williams) Novais, C.Delgado & S.Blanco, comb. et stat. nov.
Type: article
Appears in Collections:ICT - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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