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A first record of biphallia in imposexed female of Leucozonia nassa (Caenogastropoda: Fasciolariidae)

Published online by Cambridge University Press:  11 February 2009

Carlos A.O. Meirelles ,
Ítalo B. Castro  and
Jully C.L. Pinheiro
Carlos A.O. Meirelles*
Affiliation:
Universidade Federal do Ceará, Departamento de Biologia, Laboratório de Invertebrados Marinhos (LIMCE), Campus do Pici, CEP. 60455-970, Fortaleza, Ceará Brazil
Ítalo B. Castro
Affiliation:
Fundação Universidade Federal do Rio Grande, C.P. 474, CEP 96201-900, Rio Grande, RS, Brazil
Jully C.L. Pinheiro
Affiliation:
Universidade Federal do Ceará, Departamento de Biologia, Laboratório de Invertebrados Marinhos (LIMCE), Campus do Pici, CEP. 60455-970, Fortaleza, Ceará Brazil
*
Correspondence should be addressed to: Carlos A.O. Meirelles, Universidade Federal do Ceará, Departamento de Biologia, Laboratório de Invertebrados Marinhos (LIMCE), Campus do Pici, CEP. 60455-970, Fortaleza, Ceará Brazil email: cameirelles@gmail.com
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Abstract

Imposex is characterized by the development of male characteristics, such as the penis and vas deferens, in female prosobranch gastropods, caused by organotin compounds contamination. In Brazil, imposex was observed in the muricids Stramonita haemastoma and Stramonita rustica and in the olivid Olivancillaria vesica. During the low tide, 54 adult individuals of Leucozonia nassa were manually collected in February 2004 at Ilha do Japonês tidal flat, Cabo Frio County, Rio de Janeiro State, south-east Brazil. About 98.15% of females presented imposex (N = 30). Their penises were smaller than male ones. Only 1 imposexed female presented a biphallia problem, showing 2 flattened penises with a small scourge in the edge. This is the first record of biphallia in an imposexed female of fasciolarid Leucozonia nassa.

Keywords

Leucozonia nassaS.E. Brazilimposexbiphallia
Type
Research Article
Information
Marine Biodiversity Records , Volume 1 , January 2008 , e39
Copyright
Copyright © Marine Biological Association of the United Kingdom 2007

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