Scientia Marina, Vol 70, No S3 (2006)

Distribution patterns of Terebellidae (Annelida: Polychaeta): an application of Parsimony Analysis of Endemicity (PAE)


https://doi.org/10.3989/scimar.2006.70s3269

André Rinaldo Senna Garraffoni
Centro de Estudos do Mar, Universidade Federal do Paraná, Brazil

Curso de Pós-Graduação em Ciências Biológicas, Zoologia, Universidade Federal do Paraná, Setor de Ciências Biológicas, Departamento de Zoologia, Curitiba, Brazil.

Silvio Shigueo Nihei
Centro de Estudos do Mar, Universidade Federal do Paraná, Brazil

Paulo da Cunha Lana
Centro de Estudos do Mar, Universidade Federal do Paraná, Brazil

Abstract


The biogeography of Terebellidae (Polychaeta) using Parsimony Analysis of Endemism (PAE) is investigated and species and genera distribution in relation to coastal and continental shelf areas of endemism around the world is considered. Hierarchical patterns in PAE cladograms are identified by testing for congruence with patterns derived from cladistic biogeography and geological evidence. The PAE cladogram indicates that many of the extant terebellid worms from the current Southern Hemisphere (“Gondwanan clades”) have originated from Laurasian ancestors or, in the case of the clade formed by Brazilian, South Atlantic and Antarctic taxa, have descended directly from an ancestral lineage common to some Northern areas. The present analysis also shows a high level of endemism at the species level. Relationships of the areas differ slightly from previous biogeographical analyses applied to other polychaete families.


Keywords


marine biogeography; historical biogeography; areas of endemicity; Terebellinae; Polycirrinae; Thelepodinae; Trichobranchinae

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