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Three new intertidal sponges (Porifera: Demospongiae) from Brazil’s fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia ’s exclusion from Poecilosclerida

2013; Taylor & Francis; Volume: 47; Issue: 33-34 Linguagem: Inglês

10.1080/00222933.2013.792962

1464-5262

Victor Ribeiro Cedro, Eduardo Hajdu, Mônica Dorigo Correia,

Coral and Marine Ecosystems Studies

AbstractThe inventory of Brazil's marine sponge fauna is notably fragmentary; knowledge remains basic even in the vicinity of some important urban areas. Accordingly, we set up a plan to prioritize taxonomic study of sensitive areas, coupling high biodiversity potential and likely outstanding human pressure on biological resources. One such area comprises the fringing urban reefs of Maceió (Alagoas State, northeastern Brazil), from where three new demosponges are described here: Plakina coerulea sp. nov., Rhabderemia meirimensis sp. nov. and Mycale rubra sp. nov. The new Rhabderemia shares with Biemna, Desmacella, Neofibularia and Sigmaxinella, the possession of distally microspined sigmas. Recent molecular results have shown these taxa to be only distantly related to chelae-bearing Poecilosclerida, hence our decision to leave the new species as ordo incertae sedis. It is proposed that the intertidal or shallow subtidal sponge fauna in northeastern Brazil's reefs deserves enhanced conservation effort to preserve what remains in these highly impacted ecosystems. http://www.zoobank.org/urn:lsid:zoobank.org:pub:4F150A0A-2371-40A1-B7B2-8CD14CEB885C Keywords: PlakinaMycaletaxonomySouthwest Atlantic AcknowledgementsProf. Dr Hilda H. Sovierzosky, Mr André Felipe Bispo da Silva and Mr Alvaro G.A. Borba Jr are thanked for their help with field work. André is also thanked for helping with microphotography and image editing, while Alvaro deserves further thanks for generating the map of the Maceió coastline. Prof. Dr Guilherme R.S. Muricy is thanked for the loan of comparative material and for suggestions concerning the description and identification of Plakina coerulea sp. nov. Dr Mariana de S. Carvalho, Sula Salani MSc and Julio C.C. Fernandez MSc are thanked for helping VRC in the laboratory at Museu Nacional/UFRJ. Amanda G. da Veiga is thanked for scanning electron microscopy operation at the Centre for Scanning Electron Microscopy of the Departamento de Invertebrados (Museu Nacional/UFRJ). The establishment of this Centre was achieved thanks to a grant from CENPES/PETROBRAS, and is part of the company's Thematic Network for Marine Environmental Monitoring. CNPq and FAPERJ provided grants and/or fellowships that were greatly appreciated.