DSpace Repository

Distribution patterns of the genus Pacifigorgia (Octocorallia: Gorgoniidae): track compatibility analysis and parsimony analysis of endemicity

Show simple item record

dc.contributor.author Vargas, Sergio en
dc.contributor.author Guzman, Hector M. en
dc.contributor.author Breedy, Odalisca en
dc.date.accessioned 2011-02-16T18:28:03Z
dc.date.available 2011-02-16T18:28:03Z
dc.date.issued 2008
dc.identifier.citation Vargas, Sergio, Guzman, Hector M., and Breedy, Odalisca. 2008. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F12219">Distribution patterns of the genus Pacifigorgia (Octocorallia: Gorgoniidae): track compatibility analysis and parsimony analysis of endemicity</a>." <em>Journal of Biogeography</em>. 35 (2):241&ndash;247. en
dc.identifier.issn 1365-2699
dc.identifier.uri http://hdl.handle.net/10088/12219
dc.description.abstract Abstract Aim We analysed the distribution patterns of the eastern Pacific octocoral genus Pacifigorgia and deduced its ancestral distribution to determine why Pacifigorgia is absent from the Gulf of Mexico, the Caribbean of central America, and the Antilles. We also examined the current patterns of endemism for Pacifigorgia to look for congruence between hot spots of endemism in the genus and generally recognized areas of endemism for the eastern Pacific. Location The tropical eastern Pacific and western Atlantic, America. Methods We used track compatibility analysis (TCA) and parsimony analysis of endemicity (PAE) to derive ancestral distribution patterns and hot spots of endemism, respectively. Distributional data for Pacifigorgia were gathered from several museum collections and from fieldwork, particularly in the Pacific of Costa Rica and Panama. Results A single generalized track joined the three main continental eastern Pacific biogeographical provinces and the western Atlantic. This track can be included within a larger eastern Atlantic-eastern Pacific transoceanic track that may be the oldest transoceanic track occurring in the region. PAE results designate previously recognized eastern Pacific biogeographical provinces as Pacifigorgia hot spots of endemism. The number of endemic species, which for other taxonomic groups is similar among the eastern Pacific provinces, is higher in the Panamic province for Pacifigorgia. Main conclusions We propose that the absence of Pacifigorgia from the Gulf of Mexico, the Caribbean of central America, and the Antilles is the result of an ancient absence of the genus from these areas rather than the consequence of a major, recent, extinction episode. The Cortez province and the Mexican province appear together as a result of either non-response to vicariance or dispersal across the Sinaloan Gap. We posit that the Central American Gap acts as a barrier that separates the Panamic province from the northern Cortez-Mexican province. en
dc.relation.ispartof Journal of Biogeography en
dc.title Distribution patterns of the genus Pacifigorgia (Octocorallia: Gorgoniidae): track compatibility analysis and parsimony analysis of endemicity en
dc.type Journal Article en
dc.identifier.srbnumber 74412
rft.jtitle Journal of Biogeography
rft.volume 35
rft.issue 2
rft.spage 241
rft.epage 247
dc.description.SIUnit Encyclopedia of Life en
dc.description.SIUnit Forces of Change en
dc.description.SIUnit STRI en
dc.citation.spage 241
dc.citation.epage 247


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account

Statistics