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

• Published in: Scientia Marina
• Main Authors: André Rinaldo Senna Garraffoni, Silvio Shigueo Nihei, Paulo da Cunha Lana
• Format: Article in Journal/Newspaper
• Language: English
• Published: Consejo Superior de Investigaciones Científicas 2006
• Subjects: marine biogeography; historical biogeography; areas of endemicity; terebellinae; polycirrinae; thelepodinae; trichobranchinae; Aquaculture. Fisheries. Angling; SH1-691; Antarctic; Antarc*
• Online Access: https://doi.org/10.3989/scimar.2006.70s3269; https://doaj.org/article/1d79538176a048e3bfe53ce03119c0a9

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.