title: Seven new species within western Atlantic Starksia atlantica, S. lepicoelia, and S. sluiteri (Teleostei, Labrisomidae), with comments on congruence of DNA barcodes and species.
abstract: Specimens of Starksia were collected throughout the western Atlantic, and a 650-bp portion of the mitochondrial gene cytochrome oxidase-c subunit I (COl) was sequenced as part of a re-analysis of species diversity of western Central Atlantic shorefishes. A neighbor-joining tree constructed from the sequence data suggests the existence of several cryptic species. Voucher specimens from each genetically distinct lineage and color photographs of vouchers taken prior to dissection and preservation were examined for diagnostic morphological characters. The results suggest that Starksia atlantica, Starksia lepicoelia, and Starksia sluiteri are species complexes, and each comprises three or more species. Seven new species are described. DNA data usually support morphological features, but some incongruence between genetic and morphological data exists. Genetic lineages are only recognized as species if supported by morphology. Genetic lineages within western Atlantic Starksia generally correspond to geography, such that members of each species complex have a very restricted geographical distribution. Increasing geographical coverage of sampling locations will almost certainly increase the number of Starksia species and species complexes recognized in the western Atlantic. Combining molecular and morphological investigations is bringing clarity to the taxonomy of many genera of morphologically similar fishes and increasing the number of currently recognized species. Future phylogenetic studies should help resolve species relationships and shed light on patterns of speciation in western Atlantic Starksia.
authors: National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560.
authors: Carole C
authors: CC
authors: Baldwin
authors: Cristina I
authors: CI
authors: Castillo
authors: Lee A
authors: LA
authors: Weigt
authors: Benjamin C
authors: BC
authors: Victor
references: J Mol Evol. 1980 Dec;16(2):111-20
references: 7463489
references: Proc Natl Acad Sci U S A. 2010 Aug 3;107(31):13777-82
references: 20643927
references: Mol Biol Evol. 1987 Jul;4(4):406-25
references: 3447015
references: Proc Biol Sci. 2005 Mar 22;272(1563):573-9
references: 15817431
references: Mol Ecol Resour. 2009 May;9 Suppl s1:237-42
references: 21564983
references: PLoS One. 2010 Apr 01;5(4):e9950
references: 20376349
references: Proc Natl Acad Sci U S A. 2004 Oct 12;101(41):14812-7
references: 15465915