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Biota Neotropica

Print version ISSN 1806-129XOn-line version ISSN 1676-0611

Biota Neotrop. vol.3 no.2 Campinas  2003

http://dx.doi.org/10.1590/S1676-06032003000200007 

Synopsis of knowledge on Cnidaria Medusozoa from Brazil

 

Sinopse sobre o conhecimento dos Cnidaria Medusozoa do Brasil

 

 

Antonio C. MarquesI; André C. MorandiniI; Alvaro E. MigottoII

IDepartamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Caixa Postal 11461, 05422-970, São Paulo, SP, Brazil.
IICentro de Biologia Marinha, Universidade de São Paulo, Caixa Postal 83, 11600-970, São Sebastião, SP, Brazil.
e-mails: marques@ib.usp.br, acmorand@usp.br, aemigott@usp.br

 

 


ABSTRACT

A synopsis of knowledge concerning Medusozoa (Cnidaria) along the Brazilian coast is presented. We generated a data list with all records of medusozoans from Brazil, including information on the distribution of the species and the phase (polyp or medusa) recorded. Currently the number of species of Medusozoa recorded from Brazil is 377 (205 genera and 82 families), with 348 species of hydrozoans, 22 scyphozoans, 3 cubozoans and 1 staurozoan. Geographical and historical analyses were carried out based on the data list. The geographical analysis reveals that knowledge on biodiversity of the group is most inadequate for the North and part of the Northeastern coast. Although the Southeastern coast is the best known region in number of species and representative suprageneric taxa recorded, in general there is a lack of knowledge of the fauna in other than shallow waters, a pattern also observed for all other regions. Historically, the rapid increase of records on hydrozoans began in the 1940s and accelerated during the last decade. Investigations on coronates are all concentrated in the last decade but, in general, other groups show slow and gradual accumulation of species records. Guidelines and policies for the study of medusozoan biodiversity are suggested.

Key words: Hydrozoa, Scyphozoa, Cubozoa, Staurozoa, Fauna, South Atlantic, Polyp, Medusa, Brazil


RESUMO

Uma sinopse sobre o conhecimento dos Medusozoa (Cnidaria) da costa brasileira é apresentada. Este estudo é baseado em uma lista com todos os registros de Medusozoa para o Brasil, incluindo informações sobre a distribuição das espécies e suas fases (pólipo ou medusa). O número de espécies de Medusozoa registradas para o Brasil até o momento é 377 (205 gêneros e 82 famílias), com 348 espécies de hidrozoários, 22 de cifozoários, 3 de cubozoários e 1 de estaurozoário. Análises geográfica e histórica também foram conduzidas. A análise geográfica mostra claramente a ausência de conhecimento sobre a biodiversidade da costa norte bem como de parte da costa nordeste do país. Embora a costa sudeste seja a melhor conhecida em termos de números de espécies e representantes de táxons supragenéricos registrados, há em geral ausência de conhecimento sobre ambientes diferentes das águas rasas, um padrão também observado para as outras regiões. Historicamente, o crescimento dos registros de hidrozoários iniciou-se após a década de 1940, com um aumento na última década; os estudos com coronados estão todos concentrados na última década mas, em geral, outros grupos mostram um acúmulo lento e gradual nos registros de espécies. Linhas gerais e políticas para o estudo da biodiversidade dos Medusozoa são sugeridas.

Palavras-chave: hidrozoários, cifozoários, cubozoários, estaurozoários, Fauna, Atlântico Sul, Pólipo, Medusa, Brasil


 

 

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Date Received : 07/14/2003
Accepted :08/26/2003
ISSN 1676-0611

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