High degree of connectivity among amphi-Atlantic populations of Hermodice carunculata (Amphinomidae, Annelida)

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dc.contributor.authorAhrens, Joseph
dc.contributor.authorBorda, Elizabeth
dc.contributor.authorCampbell, Alexandra
dc.contributor.authorSchulze, Anje
dc.date.accessioned2012-06-01T19:32:42Z
dc.date.available2012-06-01T19:32:42Z
dc.date.issued2012-06-01
dc.descriptionFaculty advisor: Dr. Anja Schulzeen_US
dc.description.abstractPolychaete annelids in the genus Hermodice exhibit an amphi-Atlantic distribution extending into the Gulf of Mexico as well as the Caribbean and Mediterranean Seas. Currently, this genus contains two nominal species; H. carunculata, which inhabits the Greater Caribbean, and H. nigrolineata which is found in the Mediterranean and along the African Atlantic coast. In this study, we analyzed DNA sequence data from specimens in the Gulf of Mexico (GoM), the Mediterranean and Caribbean Seas to estimate population structure and phylogeographic patterns for Hermodice. Analysis of mitochondrial cytochrome oxidase subunit I (COI) and 16s rDNA indicates low levels of divergence between Greater Caribbean and Mediterranean specimens. Additionally, at least three outliers from Mediterranean populations cluster with Greater Caribbean specimens in phylogenetic analyses. Our results provide no support for the distinction between H. carunculata and H. nigrolineata and stress the importance of including molecular data as a criterion for delimiting species. Whereas other genetic studies of marine taxa often reveal the presence of cryptic species complexes, our study indicates high population connectivity across a wide geographic range for H. carunculata.en_US
dc.identifier.urihttp://hdl.handle.net/1969.3/28342
dc.language.isoen_USen_US
dc.relation.ispartofseriesTAMUG Student Research Symposium;8th Annual, 2012
dc.subjectannelidaen_US
dc.subjectHermodice carunculataen_US
dc.subjectpopulation structureen_US
dc.subjectphylogeographic patternsen_US
dc.titleHigh degree of connectivity among amphi-Atlantic populations of Hermodice carunculata (Amphinomidae, Annelida)en_US
dc.typeImageen_US

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(2012) 8th Annual Student Research Symposium