Abstract
Abstract The occurrence of intersex specimens of Lissoporcellana quadrilobata (Miers, 1884), Pisidia bluteli (Risso, 1816) and Pisidia longimana (Risso, 1816) is recorded for the first time and their secondary sexual characters analyzed. Intersex specimens were collected in regions regularly affected by pollution. There is a high possibility that intersexuality in porcelain crabs is caused by environmental contamination.
Highlights
All content of the journal, except where identi ed, is licensed under a Creative Commons attribution-type BY
Males occasionally have highly modified pleopods (= gonopods) located on the second abdominal somite
Intersexuality has been only reported in two species: Porcellana platycheles (Pennant, 1777) and Pisidia longicornis (Linnaeus, 1767) by Ferreira and Guzmán (2013) and Ferreira (2015), respectively
Summary
All content of the journal, except where identi ed, is licensed under a Creative Commons attribution-type BY. Ferreira (2015) identified an ovigerous intersex specimen in P. longicornis, representing the first record of this condition in porcelain crabs. The present paper aims to report new records of intersexuality in three additional porcellanid crabs: Lissoporcellana quadrilobata (Miers, 1884), Pisidia bluteli (Risso, 1816) and Pisidia longimana (Risso, 1816). The sex of individuals was determined based on the position of the gonopores on either P3 (males) or P5 (females), whereas secondary sexual characters were scored based mainly on the morphology of the sternum, abdomen and pleopods.
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