[Nueva especie de diatomea descrita por colaboradora de ECOHYDROS]

“Morphology and ecology of Fragilaria misarelensis sp. nov.(Bacillariophyta), a new diatom species from southwest of Europe.”

Un equipo del que forma parte la investigadora Cristina Delgado (Univ. de Vigo) experta en diatomeas bentónicas de ríos, y asidua colaboradora de ECOHYDROS S.L., describe una nueva especie de diatomea a partir de muestras recolectadas en el río Mondego [Casal da Misarela, en Portugal].

Publicado en 2019 en Phycologia, 58(2): 128-144.

A new freshwater diatom species was described from southwest Europe (Portugal), based on morphological and ultrastructural characteristics. 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.

Fragillaria

©Taylor & Francis 2019


Fragillaria

©Taylor & Francis 2019

Puedes consultar y descargar el artículo en esta referencia https://doi.org/10.1080/00318884.2018.1524245

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