Cryptic species within the rotifer Lecane bulla (Rotifera: Monogononta: Lecanidae) from North America based on molecular species delimitation

Periodo de realización: 1900/01/01 al 2020/01/01

Tipo: Artículo científico

Resumen: "The littoral rotifer Lecane bulla is one of the most eurytopic members of the Lecane genus and is found in a widevariety of water bodies around the world. Taxonomic orthodoxy dictates that all specimens of this widespread taxonrepresent a single morphospecies. We analyzed a dataset of previously published and newly generated sequences of themitochondrial COI gene of the L. bulla complex to examine cryptic diversity in the taxon. We undertook phylogeneticanalyses and applied 3 methods of species delimitation (ABGD, PTP and GMYC) to identify cryptic species withinL. bulla. Our results revealed the existence of 13 cryptic species based on the agreement of the different delimitationmethods. Genetic distances between the 13 cryptic species ranged from 4.6 to 16.8%. We found a barcoding gapwhere the intraspecific divergences (within cryptic species) were smaller than interspecific divergences (among crypticspecies), thus supporting the 13 cryptic species delimited by the species delineation methods as independent entities.Our work reveals high levels of cryptic diversity in L. bulla and highlights the need to further studies to resolve thetaxonomic status of these cryptic species (and genetic lineages)."

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