Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution
Among 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...
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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09621083_v21_n1_p130_Lessios http://hdl.handle.net/20.500.12110/paper_09621083_v21_n1_p130_Lessios |
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paper:paper_09621083_v21_n1_p130_Lessios2023-06-08T15:58:01Z Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution gametic isolation molecules Isthmus of Panama marine barriers mitochondrial DNA speciation cytochrome c oxidase mitochondrial DNA primer DNA animal Arbacia article classification DNA sequence genetics hybridization molecular evolution molecular genetics nucleotide sequence Panama phylogeny phylogeography species difference Animals Arbacia DNA Primers DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Hybridization, Genetic Molecular Sequence Data Panama Phylogeny Phylogeography Sequence Analysis, DNA Species Specificity Arbacia Arbacia spatuligera Echinoidea Among 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. © Published 2011. This article is a U.S. Government work and is in the public domain in the USA. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09621083_v21_n1_p130_Lessios http://hdl.handle.net/20.500.12110/paper_09621083_v21_n1_p130_Lessios |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
gametic isolation molecules Isthmus of Panama marine barriers mitochondrial DNA speciation cytochrome c oxidase mitochondrial DNA primer DNA animal Arbacia article classification DNA sequence genetics hybridization molecular evolution molecular genetics nucleotide sequence Panama phylogeny phylogeography species difference Animals Arbacia DNA Primers DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Hybridization, Genetic Molecular Sequence Data Panama Phylogeny Phylogeography Sequence Analysis, DNA Species Specificity Arbacia Arbacia spatuligera Echinoidea |
| spellingShingle |
gametic isolation molecules Isthmus of Panama marine barriers mitochondrial DNA speciation cytochrome c oxidase mitochondrial DNA primer DNA animal Arbacia article classification DNA sequence genetics hybridization molecular evolution molecular genetics nucleotide sequence Panama phylogeny phylogeography species difference Animals Arbacia DNA Primers DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Hybridization, Genetic Molecular Sequence Data Panama Phylogeny Phylogeography Sequence Analysis, DNA Species Specificity Arbacia Arbacia spatuligera Echinoidea Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution |
| topic_facet |
gametic isolation molecules Isthmus of Panama marine barriers mitochondrial DNA speciation cytochrome c oxidase mitochondrial DNA primer DNA animal Arbacia article classification DNA sequence genetics hybridization molecular evolution molecular genetics nucleotide sequence Panama phylogeny phylogeography species difference Animals Arbacia DNA Primers DNA, Mitochondrial Electron Transport Complex IV Evolution, Molecular Hybridization, Genetic Molecular Sequence Data Panama Phylogeny Phylogeography Sequence Analysis, DNA Species Specificity Arbacia Arbacia spatuligera Echinoidea |
| description |
Among 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. © Published 2011. This article is a U.S. Government work and is in the public domain in the USA. |
| title |
Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution |
| title_short |
Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution |
| title_full |
Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution |
| title_fullStr |
Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution |
| title_full_unstemmed |
Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution |
| title_sort |
phylogeography and bindin evolution in arbacia, a sea urchin genus with an unusual distribution |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09621083_v21_n1_p130_Lessios http://hdl.handle.net/20.500.12110/paper_09621083_v21_n1_p130_Lessios |
| _version_ |
1768544648851095552 |