Six new epibiotic Proschkinia (Bacillariophyta) species and new insights into the genus phylogeny
Date
2019Author
Majewska, Roksana
Bosak, Sunčica
Frankovich, Thomas A.
Ashworth, Matt P.
Sullivan, Michael J.
Metadata
Show full item recordAbstract
The diatom genus Proschkinia is a common element of biofilms covering diverse substrata in saline inland or shallow
coastal environments. It can be distinguished from other naviculoid taxa by its lanceolate valves with a fistula located within
the central area and numerous open girdle bands with a U-shaped cross-section and a single row of perforations on the
internal side of the fold. Despite this distinct morphology, frustules of Proschkinia are typically weakly silicified and often
overlooked when cleaned diatom material is analysed. The current paper describes six new species of Proschkinia:
P. browderiana sp. nov., P. lacrimula sp. nov., P. maluszekiana sp. nov., P. sulcata sp. nov., P. torquata sp. nov. and
P. vergostriata sp. nov., found in numerous samples of marine organisms, such as sea turtles (including sea turtle museum
specimens), sea turtle-associated barnacles and seagrass from across the three oceans. Some of the newly described taxa
were found on multiple individuals belonging to different sea turtle species, whereas others were in samples collected from
different continents. Molecular phylogenetic analysis indicated that examined Proschkinia strains formed a monophyletic
clade, sister to Fistulifera
URI
http://hdl.handle.net/10394/33297https://www.tandfonline.com/doi/full/10.1080/09670262.2019.1628307
https://doi.org/10.1080/09670262.2019.1628307