Craspedostaurosnazmii sp. nov., a new diatom species (Bacillariophyta) from the Turkish Coast of the Black Sea

Elif Yılmaz; Andrzej Witkowski; Neslihan Özdelice; Cüneyt Nadir Solak; Romain Gastineau; Turgay Durmuş

doi:10.3897/phytokeys.232.106545

Craspedostaurosnazmii sp. nov., a new diatom species (Bacillariophyta) from the Turkish Coast of the Black Sea

PhytoKeys. 2023 Sep 11:232:77-88. doi: 10.3897/phytokeys.232.106545. eCollection 2023.

Authors

Elif Yılmaz^{1

2}, Andrzej Witkowski¹, Neslihan Özdelice³, Cüneyt Nadir Solak², Romain Gastineau¹, Turgay Durmuş³

Affiliations

¹ Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16A, Szczecin, PL70-383 Poland Kütahya Dumlupınar University Kütahya Turkiye.
² Department of Biology, Faculty of Science and Art, Kütahya Dumlupınar University, 43000 Kütahya, Turkiye University of Szczecin Szczecin Poland.
³ Istanbul University, Faculty of Science, Department of Biology, 34134 Istanbul, Turkiye Istanbul University Istanbul Turkiye.

Abstract

Craspedostauros E.J. Cox is a diatom genus comprising 17 taxa reported from various regions of the world. While many species of Craspedostauros are epibiontic, the taxa have variable ecological preferences. In this study we formally describe Craspedostaurosnazmiisp. nov., an epilithic species discovered along the Turkish Black Sea Coast, based on light and scanning electron microscopy. Craspedostaurosnazmiisp. nov. is characterized by valves that are lanceolate to narrowly lanceolate, slightly constricted near the apices with uniseriate, parallel throughout the whole valve, transapical striae and and the presence of an apical silica flap. The areolae are distributed over the valve face and the mantle. The differences and similarities between C.nazmiisp. nov. and established species of Craspedostauros are discussed. Based on shape and morphometrics, the most similar species is Craspedostauroscapensis, but it is easily distinguished from C.nazmiisp. nov. by its lack of an apical silica flap.

Keywords: Apical silica flap; Black Sea; Craspedostauros; epilithic marine diatom.

Elif Yılmaz, Andrzej Witkowski, Neslihan Özdelice, Cüneyt Nadir Solak, Romain Gastineau, Turgay Durmuş.

Grants and funding

YÖK-Proje Tabanlı Uluslararası Değişim Programı (Grant no: MEV-2016-46) Istanbul University Research Projects Coordinations Unit (Grant No: FBA-2018-32145)