Abstract
The purpose of the present study is to examine the population structure and the breeding period of Pachycheles monilifer (Dana, 1852) inhabiting sabellariid worm reefs in the littoral of São Paulo State coast. The specimens were obtained at 2-month intervals from September/94 to July/95. The study sites were located at the rocky shores of Tenorio and Paranapuã Beaches. Individuals sampled showed a total averaged 4.4 ± 1.4 mm carapace length. Ovigerous females were more frequent in September. Despite clear differences regarding the arrangement of these sabellariid colonies, they are extremely important to the establishment and maintenance of P. monilifer.
Porcellanidae; Pachycheles monilifer; sabellariid worm reefs; biology
Population structure and breeding period of Pachycheles monilifer (Dana) (Anomura, Porcellanidae) inhabiting sabellariid sand reefs from the littoral coast of São Paulo State, Brazil
Adilson Fransozo; Giovana Bertini
Departamento de Zoologia, Instituto de Biociências. Universidade Estadual Paulista. Caixa Postal 510, 18618-000 Botucatu, São Paulo, Brazil. E-mail: fransozo@ibb.unesp.br
ABSTRACT
The purpose of the present study is to examine the population structure and the breeding period of Pachycheles monilifer (Dana, 1852) inhabiting sabellariid worm reefs in the littoral of São Paulo State coast. The specimens were obtained at 2-month intervals from September/94 to July/95. The study sites were located at the rocky shores of Tenorio and Paranapuã Beaches. Individuals sampled showed a total averaged 4.4 ± 1.4 mm carapace length. Ovigerous females were more frequent in September. Despite clear differences regarding the arrangement of these sabellariid colonies, they are extremely important to the establishment and maintenance of P. monilifer.
Key words: Porcellanidae, Pachycheles monilifer, sabellariid worm reefs, biology
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ACKNOWLEDGMENTS. We are grateful to the "Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)" for financing transport to the collecting sites (# 94/4878-8). We are also thankful to the NEBECC coworkers for their help during collection.
Recebido em 28.X.1999; aceito em 05.IV.2001
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Publication Dates
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Publication in this collection
30 Apr 2009 -
Date of issue
Mar 2001
History
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Accepted
05 Apr 2001 -
Received
28 Oct 1999