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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.18  supl.1 Curitiba July 2001

http://dx.doi.org/10.1590/S0101-81752001000500016 

Mycale (Aegogropila) kolletae sp. n. from the SE Atlantic, with comments on the species of Mycale Gray with raphidotoxas (Mycalidae, Demospongiae, Porifera)

 

 

José Luis CarballoI; Eduardo HajduII

IInstituto de Ciencias del Mar y Limnología, Universidad Autonoma de Mexico. Estación Mazatlán, Apartado Postal 811, Mazatlán 82000 México. E-mail: carballo@ola.icmyl.unam.mx
IIDepartamento de Invertebrados, Museu Nacional, Universidade do Brasil. Quinta da Boa Vista, 20940-040 Rio de Janeiro, Rio de Janeiro, Brasil. E-mail: hajdu@acd.ufrj.br

 

 


ABSTRACT

A new species of Mycale Gray, 1867 bearing raphidotoxas is described from the Namibian coast (SE Atlantic). Mycale (Aegogropila) kolletae sp. n. is characterized by having raphidotoxas up to 590 µm long, three distinct categories of anisochelae, two categories of sigmas, very small raphides, and most of all, by toxas serrated in an unusual pattern (on the inner parts of all three bends). Mycale magnirhaphidifera Van Soest, 1984 is redescribed from the Brazilian coast, based on a population from the northern São Paulo State coastline. The remaining two species with raphidotoxas, viz. Mycale rhaphidotoxa Hentschel, 1912 and M. mannarensis Thomas, 1968 are revised. Levi's (1963) record of Carmia macilenta (Bowerbank, 1866) for the South African coast was reevaluated and found conspecific with M. kolletae sp. n. It has both raphidotoxas as well as toxas with bends which are serrated on their inner surfaces. An identification key for all the Mycale with raphidotoxas is given, and a discussion on possible phylogenetic interpretations for the occurrence of raphidotoxas is advanced.

Key words: Poecilosclerida, Mycalidae, Mycale, taxonomy, microscleres, raphidotoxas, subgeneric classification, phylogeny


 

 

Full text available only in PDF format.

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ACKNOWLEDGEMENTS. JLC wishes to thank the Ministry of Fisheries and Marine Resources of the Republic of Namibia for the facilities provided, as well as Miss B. Curry and K. Grobler from the Fisheries Centre of the Republic of Namibia for their help in the scientific expedition where the specimens of M. kolletae were collected. EH is thankful to R.W.M. van Soest and D. Platvoet (Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam) for the provision of SEM (JEOL JSM-35) facilities and technical help in SEM operation, respectively; and to A. Ribeiro and E. Mattos (Instituto de Biociencias, Universidade de São Paulo) for the provision of SEM (ZEISS DSM-940) facilities and technical help in SEM operation, respectively. CNPq, FAPERJ, FAPESP and FUJB (all from Brazil) provided financial support in the form of grants and/or fellowships, which is deeply acknowledged.

 

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Recebido em 24.VIII.2000; aceito em 26.VI.2001.

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