Browsing by Author "Zubia, Mayalen"
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- Concise review of the genus Caulerpa J.V. LamourouxPublication . Zubia, Mayalen; Draisma, Stefano G. A.; Morrissey, Kathryn Lee; Varela-Álvarez, Elena; De Clerck, OlivierThe genus Caulerpa is highly diverse, especially in the Caribbean Sea, the Indo-Malay archipelago and the temperate waters of southern Australia. Currently, more than 100 species are recognized worldwide. Despite recent advances in taxonomy and phylogeny, there is still confusion about the delimitation and identification of some species due to tremendous phenotypic plasticity. Caulerpa is known to occupy a wide range of environmental niches and to have great invasive potential. More studies are necessary to understand better the ecology (invasiveness, the functional role of its microbiome) and the biology (reproduction, life cycle, and metabolism) of Caulerpa species, especially for economical species. Very few species, mainly C. lentillifera and C. racemosa known as green caviar, have been cultivated. Caulerpa is consumed mostly in Asia and Oceania, but its popularity tends to be on the increase in western countries with new nutritional practices (vegetarians, vegans, health foods). Being naturally enriched in essential nutrients and various health-promoting compounds, Caulerpa species are promising candidates for the design of functional foods and in the health and well-being sectors. The diversity of Caulerpa offers a remarkable potential for valorization with innovation opportunities. Caulerpa farming can bring significant economic and environmental (e.g., bioremediation, blue carbon pump) benefits if these farms are established in a sustainable approach.
- Lobophora (Dictyotales, Phaeophyceae) from the western Indian Ocean: diversity and biogeographyPublication . Vieira, Christophe; Rasoamanendrika, Faravavy A.; Zubia, Mayalen; Bolton, John J.; Anderson, Robert J.; Engelen, Aschwin; D'hondt, Sofie; Leliaert, Frederik; Payri, Claude; Kawai, Hiroshi; De Clerck, OlivierThe brown algal genus Lobophora (Dictyotales, Phaeophyceae) is an important ecological component of tropical marine systems. Although still scantily sampled, 35 species of Lobophora were discovered previously from the western Indian Ocean. This study updates previous diversity estimates by incorporating recent collections from Madagascar, Mozambique, and the Red Sea, considerably improving our knowledge of Lobophora diversity and biogeography in this region. Eight additional species are identified from the western Indian Ocean, raising the total number of Lobophora species to 43. Fifteen species are new to science and described herein. With ca. 40% of the global diversity, the western Indian Ocean is second only to the Central IndoPacific. Of the species identified to date, 29 appear to be restricted to the western Indian Ocean, three are shared with the Atlantic (four including L. lessepsiana introduced to the western Mediterranean Sea) and 12 have a wider distribution in the Indo-Pacific. The western Indian Ocean supports a high diversity with ca. 67% of its Lobophora restricted to this region, which is comparable to the Central Indo-Pacific (62%) and the Caribbean (61%). The presence of several putative endemic species in the western Indian Ocean islands and the Red Sea illustrates that these provinces played an important role in Lobophora species diversification within the western Indian Ocean by producing locally new species. The small number of species shared between the western Indo-Pacific and Atlantic indicates that this oceanic boundary - associated with the temperate Agulhas marine province, and the Benguela current and upwelling - acts as an effective dispersal barrier.
- Taxonomic insights into caulerpa (Bryopsidales, Chlorophyta) species in French Polynesia: confirmation of 13 species and reinstatement of c. pickeringii Harvey & BaileyPublication . Lagourgue, Laura; Sauvage, Thomas; Zubia, Mayalen; Draisma, Stefano G. A.; Vieira, António Carlos; Engelen, Aschwin; Payri, Claude E.Caulerpa J.V. Lamouroux is a genus of green macroalgae belonging to the family Caulerpaceae in the order Bryopsidales. The genus comprises 104 currently accepted species, of which 51 have been recorded from Pacific Islands. Among these islands, French Polynesia is found in the middle of the South Pacific Ocean and includes five archipelagos (i.e., the Austral, Gambier, Marquesas, Society, and Tuamotu Islands) where seaweed inventories have reported a total of 16 Caulerpa species so far based on morphology. Here, based on a sampling covering the five archipelagos of French Polynesia, we attempt to (i) verify the taxonomy of Caulerpa species present in these regions based on phylogeny, (ii) describe in more detail the specific diversity between the five archipelagos, and (iii) provide a morphological identification tool for these species. We successfully obtained 134 new tufA sequences for phylogenetic analyses, which corresponded to 13 species. We propose to resurrect C. pickeringii Harvey & Bailey for representatives of C. webbiana var. pickeringii and classify it in the Caulerpa subgenus Araucarioideae. We also transfer C. seuratii to C. pickeringii based on genetic results. A new morphological identification key is provided as well as an updated distribution of Caulerpa species across French Polynesia.