Pseudocodium okinawense(Bryopsidales, Chlorophyta), a new species from Okinawa and the first report of the genus from eastern Asia
Year: 2008
Type: article
Abstract: A new species of the green algal genus Pseudocodium is described on the basis of specimens collected from Okinawa, southern Japan. It differs from the generitype species P. de-vriesii Weber-van Bosse from South Africa, P. australasicum Womersley from Australia and P. floridanum C. J. Dawes & A. C. Mathieson from Florida in its smaller size (1–2 cm in height, axes 0.5–1.0 mm in width) and infrequent branching. Unlike P. de-vriesii and P. australasicum also is its total lack of constricted or articulated axes. Molecular-phylogenetic analyses based on plastid encoded rbcL gene sequences show the Okinawan plants to group with Atlantic P. floridanum but to be specifically distinct owing to substantial base pair differences (88 bp, 11.876%). Remarkable differences in morphometric data, ecological preferences and geographic distribution were also found between them. We thus describe the Okinawan entity as Pseudocodium okinawense E. J. Faye, M. Uchimura et S. Shimada sp. nov. In addition, on the basis of laboratory culture experiments, a diminutive, entirely tubular growth form showing great morphological dissimilarity with field materials is newly observed in the genus, thus adding further details to our understanding of the plants vegetative phenology at early developmental stages.
Source: European Journal of Phycology
Institutions: Port and Airport Research Institute, Hokkaido University
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2036628289