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Eudistoma clavatum sp. nov. (Tunicata: Ascidiacea: Polycitoridae) from Brazil

Published online by Cambridge University Press:  03 March 2009

R.M. Rocha  and
N.Y.K. Bonnet
R.M. Rocha*
Affiliation:
Departamento de Zoologia, Universidade Federal do Paraná, Brazil
N.Y.K. Bonnet
Affiliation:
Departamento de Zoologia, Universidade Federal do Paraná, Brazil
*
Correspondence should be addressed to: R.M. Rocha, Departamento de Zoologia, Universidade Federal do Paraná, Brazil email: [email protected]
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Abstract

Six species of Eudistoma are known on the Brazilian coast, most of them from the tropical part of the country. Here we describe a new species found in shallow waters at 24–27°S, which hang from vertical surfaces or ledges. The colony is formed by clavate lobes connected by the base. The main diagnostic characteristic is the shape of the colony and the larvae which have small projections at the base of the ectodermal ampullae. Other characteristics are: zooid 5–7 mm long with abdomen 3.5 times longer than the thorax, not organized in systems, up to 20 longitudinal and 23 transverse muscle bands on the thorax, decreasing number of stigmata from the first (21–24 stigmata per side) to the third row (13–19 stigmata per side), 16 oral tentacles of two sizes arranged in one circle, 8–13 testis follicles, 2–4 embryos developing in a wide atrial cavity, larva 0.5 mm long with four pairs of long ampullae and tail winding 3/4 of the way around the trunk.

Keywords

Urochordatataxonomynew species
Type
Research Article
Information
Marine Biodiversity Records , Volume 2 , January 2009 , e3
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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References

REFERENCES

Kott, P. (1957) The Ascidians of Australia. Australian Journal of Marine and Freshwater Research 8, 64–110.CrossRefGoogle Scholar
Kott, P. (1990) The Australian Ascidiacea. Part 2. Aplousobranchia (1). Memoirs of the Queensland Museum 29, 1–266.Google Scholar
Lotufo, T.M.C. (2002) Ascidiacea (Chordata: Tunicata) do litoral tropical brasileiro. PhD thesis, Instituto de Biociências, Universidade de São Paulo, Brazil.Google Scholar
Lotufo, T.M.C. and Silva, A.M.B. (2006) Ascidiacea do Litoral Cearense. In Cascon, H.M. and Lotufo, T.M.C. (eds) Biota Marinha da Costa Oeste do Ceará. Brasília: Ministério do Meio Ambiente, pp. 221–247.Google Scholar
Millar, R.H. (1975) Ascidians from the Indo-West-Pacific Region in the Zoological Museum, Copenhagen (Tunicata, Ascidiacea). Steenstrupia, Zoological Museum University of Copenhagen 20, 205–336.Google Scholar
Millar, R.H. (1977) Ascidians (Tunicata: Asciacea) from the northern and north-eastern Brazilian shelf. Journal of Natural History 11, 169–223.CrossRefGoogle Scholar
Monniot, C., Monniot, F., Griffiths, C.L. and Schleyer, M. (2001) South African Ascidians. Annals of the South African Museum, Part 1, 108, 1–141.Google Scholar
Monniot, F. (1983) Ascidies littorales de Guadeloupe. V. Polycitoridae. Bulletin du Muséum National d'Histoire Naturelle, 4a Sér., Section A, 5, 999–1019.CrossRefGoogle Scholar
Monniot, F. (1988) Ascidies de Nouvelle-Calédonie V. Polycitoridae du lagon. Bulletin du Muséum National d'Histoire Naturelle, 4a Sér., Section A, 10, 197–235.CrossRefGoogle Scholar
Monniot, F. and Monniot, C. (2001) Ascidians from the tropical western Pacific. Zoosystema 23, 201–383.Google Scholar
Rocha, R.M. and Kremer, L.P. (2005) Introduced Ascidians in Paranaguá Bay, Paraná, southern Brazil. Revista Brasileira de Zoologia 22, 1170–1184.CrossRefGoogle Scholar
Rocha, R.M. and Moreno, T.R. (2000) Ascidians associated with Eudistoma carolinense Van Name, 1945 (Ascidiacea, Polycitoridae). Description of species and ecological notes. Ophelia 52, 9–16.CrossRefGoogle Scholar
Rocha, R.M., Moreno, T.R. and Faria, S.B. (2005) Ascidians from Bocas del Toro, Panamá. I. Biodiversity. Caribbean Journal of Science 41, 600–612.Google Scholar
Tokioka, T. (1954) Contributions to Japanese Ascidian Fauna. IX. Re-description of Oka's Species Found in “Figuraro de Japanaj Bestoj”. Seto Marine Biological Laboratory 4, 69–75.Google Scholar