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SourceID156692
NameLessios, H. A., Lockhart, S., Collin, R., Sotil, G., Sanchez-Jerez, P., Zigler, K. S., Perez, A. F., Garrido, M. J., Geyer, L. B., Bernardi, G., Vaquier, V. D., Haroun, R. & Kessing, B. D. 2012. Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution. Molecular Ecology 21, 130-144.
Type Publication
Linkhttp://dx.doi.org/10.1111/j.1365-294X.2011.05303.x
AbstractAmong shallow water sea urchin genera, Arbacia is the only genus that contains species found in both high and low latitudes. In order to determine the geographical origin of the genus and its history of speciation events, we constructed phylogenies based on cytochrome oxidase I and sperm bindin from all its species. Both the mitochondrial and the nuclear gene genealogies show that Arbacia originated in the temperate zone of the Southern Hemisphere and gave rise to three species in the eastern Pacific, which were then isolated from the Atlantic by the Isthmus of Panama. The mid-Atlantic barrier separated two additional species. The bindin data suggest that selection against hybridization is not important in the evolution of this molecule in this genus. Metz et al. in a previous publication found no evidence of selection on bindin of Arbacia and suggested that this might be due to allopatry between species, which obviated the need for species recognition. This suggestion formed the basis of the conclusion, widely spread in the literature, that the source of selection on sea urchin bindin (where it does occur) was reinforcement. However, the range of Arbacia spatuligera overlaps with that of two other species of Arbacia, and our data show that it is hybridizing with one of them. We found that even in the species that overlap geographically, there are no deviations from selective neutrality in the evolution of bindin. Keywords: gametic isolation molecules, Isthmus of Panama, marine barriers, mitochondrial DNA, speciation
Taxonomic
term
Echinoidea
Taxa
(7)
Checked: verified by a taxonomic editorArbacia crassispina Mortensen, 1910 accepted as Checked: verified by a taxonomic editorArbacia dufresnii (Blainville, 1825) (status source)
Checked: verified by a taxonomic editorArbacia dufresnii (Blainville, 1825) (additional source)
Checked: verified by a taxonomic editorArbacia lixula (Linnaeus, 1758) (additional source)
Checked: verified by a taxonomic editorArbacia lixula africana (Troschel, 1873) (additional source)
Checked: verified by a taxonomic editorArbacia punctulata (Lamarck, 1816) (additional source)
Checked: verified by a taxonomic editorArbacia spatuligera (Valenciennes, 1846) (additional source)
Checked: verified by a taxonomic editorArbacia stellata (Blainville, 1825; ?Gmelin, 1788) (additional source)
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Date   action   by
2013-01-12 18:30:12Z  created  db_admin
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