Phylogenetic analyses of Cerithioidea (Mollusca, Caenogastropoda) based on comparative morphology

• Autor(a) principal: Simone, Luiz Ricardo L.
• Data de Publicação: 2001
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Arquivos de Zoologia (Online)
• Texto Completo: https://www.revistas.usp.br/azmz/article/view/12018
• topic: Cerithioidea; phylogeny; morphology; new species

A detailed morphological study is performed on the following cerithioidean species: 1) family Thiaridae, Aylacostoma exoplicata n.sp., from Pará, Brazil; Aylacostoma ci n. sp. from Roraima, Brazil; Aylacostoma tenuilabris (Reeve), from São Paulo, Brazil; Melanoides tuberculatus (Müller), Eurasian species introduced in Brazil; 2) family Planaxidae, Supplanaxis nucleus (Bruguière),from Venezuela; 3) family Pleuroceridae, Doryssa ipupiara n. sp., from Roraima, Brazil; Doryssa atra (Bruguière), from French Guyana; Doryssa macapa (Moricand), from Amapá, Brazil; Pachychilus sp., from Chiapas, Mexico; 4) family Turritellidae, Turritella hookeri Reeve, from Rio de Janeiro, Brazil; 5) family Modulidae, Modulus modulus (L.),from Venezuela and Brazilian coasts; 6) family Cerithiidae, Cerithium atratum (Born) from Brazilian coast; Bittium varium (Pfeiffer) from S.E. Brazil; 7) family Diastomatidae, Finella dubia (Orbigny) from São Paulo, Brazil; 8) family Litiopidae, Alaba incerta (Orbigny) from Rio de Janeiro, Brazil; 9) family Baullariidae, Batillaria minima (Gmelin) from Venezuela; 10) family Cerithideidae, Cerithidea costata from Venezuela; 11) family Campanilidae, Campanile symbolicum Iredale,from Western Australia; and 12) family Vermetidae, Serpulorbis decussatus (Gmelin), from Espirito Santo, Brazil. (The Thiaridae and Pleuroceridae are freshwater groups, the remainder marine.) A cladistic analysis is undertaken using standard techniques, 122 characters (181 states) (included some autapomorphies) and polarization by outgroup method: archaeogastropod (Patellogastropoda, Vetigastropoda, Cocculiniformia and Nerithimorpha) and sometimes other caenogastropod outgroups. The consensus tree has the following topology: (Modulus modulus ((Campanile symbolicum (Serpulorbis decussatus - Turritella hookeri)) (Batillaria minima ((Pachychilus sp (Doryssa ipupiara (Doryssa atra - Doryssa macapa))) ((Cerithidea costata (Cerithium atratum (Alaba incerta (Bittium varium - Finella dubia)))) (Supplanaxis nucleus (Melanoides tuberculatus (Aylacostoma tenuilabris (Aylacostoma exoplicata - Aylacostoma ci))))))))), length = 331, CI= 55, RI= 73. The Cerithioidea is a monophyletic taxon, supported by 23 synapomorphies and includes Campanile and Serpulorbis.