Galitz A., Ekins M., Folcher E., Buttner G., Hall K., Hooper J. N. A., Reddy M. M., Schatzle S., Thomas O. P., Worheide G., Petek Sylvain, Debitus Cécile, Erpenbeck D. (2023). Poriferans rift apart : molecular demosponge biodiversity in Central and French Polynesia and comparison with adjacent marine provinces of the Central Indo-Pacific. Biodiversity and Conservation, [Early access], p. [26 p.]. ISSN 0960-3115.
Titre du document
Poriferans rift apart : molecular demosponge biodiversity in Central and French Polynesia and comparison with adjacent marine provinces of the Central Indo-Pacific
Année de publication
2023
Auteurs
Galitz A., Ekins M., Folcher E., Buttner G., Hall K., Hooper J. N. A., Reddy M. M., Schatzle S., Thomas O. P., Worheide G., Petek Sylvain, Debitus Cécile, Erpenbeck D.
Source
Biodiversity and Conservation, 2023,
[Early access], p. [26 p.] ISSN 0960-3115
The distribution of marine sponges in the tropical Southwest Pacific Ocean is largely unexplored despite the vital ecological role of sponges in coral reefs and their value as sources of metabolites for drug design. Several collection campaigns to the French Polynesian archipelagos (Society, Marquesas, Tuamotu, Gambier, and Austral) were conducted to assess the bio- and chemodiversity of the island groups. In the course of these scientific expeditions, more than 200 identified sponge specimens were acquired, for which we were able to assign 102 Molecular Operational Taxonomic Units (MOTUs). Based on these MOTUs, we assessed, in the largest analysis of its kind for this area to date, the sponge composition and faunistic overlaps of the marine province Southeast Polynesia with Marquesas and Central Polynesia. We also compared the sponge fauna of these Eastern Indo-Pacific provinces with marine provinces of the adjacent Central Indo-Pacific realm. Our findings corroborate that sponge faunal similarity within marine realms is higher than among realms, and follows the marine barriers to gene flow observed for other taxa. We detected high levels of provincial endemism for marine sponges, consistent with findings from other Indo-Pacific regions. At the level of province, geographical distance and ocean surface currents influence faunal similarity, and constitute the primary factors for the connectivity of sponge faunas between the disjunct and remote island groups in the tropical Southwest Pacific Ocean.
Plan de classement
Limnologie biologique / Océanographie biologique [034]
;
Etudes, transformation, conservation du milieu naturel [082]
Description Géographique
OCEANIE ; POLYNESIE FRANCAISE ; WALLIS ET FUTUNA
Localisation
Fonds IRD [F B010087721]
Identifiant IRD
fdi:010087721
