T1 A New Species from the Canary Islands Increases the Diversity of the Red Algal Genus Pterocladiella in the Northeastern Atlantic.
A1 Rancel Rodríguez, Nereida
A1 Afonso Carrillo, Julio
A1 Tronholm, Ana
A1 Sansón Acedo, Marta
A2 BotánicaEcología y Fisiología Vegetal
A2 BOTMAR ULL
K1 cox1
K1 Gelidiales
K1 morphology
K1 Pterocladiaceae
K1 Pterocladiella canariensis
K1 rbcL
K1 turf-forming algae
AB Environmental and human factors are inducing a drastic decline in many marine algae inregions with a high floristic richness as in the Canary Islands. Simultaneously, undescribed algalspecies continue to be discovered, suggesting a probable loss in diversity, before being properlyidentified and catalogued. Turf-forming Gelidiales occur in marine littoral communities from tropicalto warm temperate regions and are challenging to identify correctly because of their small size andsimple morphology. In the present study, we combined morphological and molecular phylogeneticsmethods to study a turf-forming species of the genus Pterocladiella from the Canary Islands (NEAtlantic). Both cox1 and rbcL gene analyses revealed a novel species described here, Pterocladiellacanariensis sp. nov. The new species has no single unique morphological feature, but it is different bya distinctive combination of attributes, namely, minute size less than 18 mm in height, ribbon-likeerect axes, small polygonal cortical cells, cystocarp circular in outline with placental tissue attachedto the floor, spermatangial sori with sterile margins with spermatangia simultaneously formed onboth sides of the blade, and tetrasporangia arranged in V-shaped rows. Phylogenies inferred fromcox1 and concatenated genes (cox1 + rbcL) suggest a link to only two Pterocladiella species endemicto South Africa and Madagascar; nevertheless, the rbcL gene establishes P. canariensis as the earliestdivergent lineage of the genus
LK http://riull.ull.es/xmlui/handle/915/40869
UL http://riull.ull.es/xmlui/handle/915/40869
DS Repositorio institucional de la Universidad de La Laguna
RD 26-abr-2025