Distribution and morphology of the diatom genus Olifantiella Riaux-Gobin & Compère in Indonesian and Australian waters, including the description of O. gondwanensis sp. nov.

By

Rybak, Mateusz
Arsad, Sulastri
Riaux-Gobin, Catherine
Luthfi, Oktiyas
Hallegraeff, Gustaaf M
Ciaś, Renata
Kierzek, Agnieszka
Witkowski, Andrzej

Type

Article

Date of Publication

2023

Original Publication

PhytoKeys

Volume

236

Pages

197--213

Subjects

Bacillariophyta , buciniportula , Diadesmidaceae , marine coasts , new combination , new species , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.236.111109

 

Abstract

Samples from coastal tropical waters of Central Sulawesi, Bangka Island and Bawean Island in Indonesia and from the Great Barrier Reef at Fitzroy Island in Queensland, Australia were analysed for species composition of diatom assemblages with a focus on Olifantiella. Whereas samples from Fitzroy Island littoral in Australia retrieved only one species of Olifantiella, in Poso Bay, Indonesia, we observed at least six species. All established taxa were documented with light (LM) and scanning electron microscope (SEM) and principal component analysis (PCA) analysis was used to compare the species, based on the basic valve parameters of length, width, length to width ratio and striae density. A new species of the genus Olifantiella, O. gondwanensis is described from Australia. In addition, we showed the distinct nature of O. pilosella var. rhizophorae permitting to species status. Particular attention is placed on girdle bands in this genus.