z-logo
Premium
Comparing Morphological and Molecular Estimates of Species Diversity in the Freshwater Genus Synura (Stramenopiles): A Model for Understanding Diversity of Eukaryotic Microorganisms
Author(s) -
Škaloud Pavel,
Škaloudová Magda,
Jadrná Iva,
Bestová Helena,
Pusztai Martin,
Kapustin Dmitry,
Siver Peter A.
Publication year - 2020
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/jpy.12978
Subject(s) - biology , taxon , genus , phylogenetic tree , species diversity , phylogenetic diversity , biodiversity , morphology (biology) , cosmopolitan distribution , species complex , ecology , molecular phylogenetics , algae , phylogenetics , zoology , evolutionary biology , gene , biochemistry
We performed a comparison of molecular and morphological diversity in a freshwater colonial genus Synura (Chrysophyceae, Stramenopiles), using the island of Newfoundland (Canada) as a case study. We examined the morphological species diversity in collections from 79 localities, and compared these findings to diversity based on molecular characters for 150 strains isolated from the same sites. Of 27 species or species‐level lineages identified, only one third was recorded by both molecular and morphological techniques, showing both approaches are complementary in estimating species diversity within this genus. Eight taxa, each representing young evolutionary lineages, were recovered only by sequencing of isolated colonies, whereas ten species were recovered only microscopically. Our complex investigation, involving both morphological and molecular examinations, indicates that our knowledge of Synura diversity is still poor, limited only to a few well‐studied areas. We revealed considerable cryptic diversity within the core S. petersenii and S. leptorrhabda lineages. We further resolved the phylogenetic position of two previously described taxa, S. kristiansenii and S. petersenii f. praefracta , propose species‐level status for S. petersenii f. praefracta , and describe three new species, S. vinlandica , S. fluviatilis, and S. cornuta . Our findings add to the growing body of literature detailing distribution patterns observed in the genus, ranging from cosmopolitan species, to highly restricted taxa, to species such as S. hibernica found along coastal regions on multiple continents. Finally, our study illustrates the usefulness of combining detailed morphological information with gene sequence data to examine species diversity within chrysophyte algae.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here