Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae
Explanations for biogeographic disjunctions involving South America and Africa typically invoke vicariance of western Gondwanan biotas or long distance dispersal. These hypotheses are problematical because many groups originated and diversified well after the last known connection between Africa and...
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ftlouisianastuir:oai:digitalcommons.lsu.edu:biosci_pubs-3665 2023-06-11T04:14:38+02:00 Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae Davis, Charles C. Bell, Charles D. Mathews, Sarah Donoghue, Michael J. 2002-05-14T07:00:00Z application/pdf https://digitalcommons.lsu.edu/biosci_pubs/2666 https://doi.org/10.1073/pnas.102175899 https://digitalcommons.lsu.edu/context/biosci_pubs/article/3665/viewcontent/2666.pdf unknown LSU Digital Commons https://digitalcommons.lsu.edu/biosci_pubs/2666 doi:10.1073/pnas.102175899 https://digitalcommons.lsu.edu/context/biosci_pubs/article/3665/viewcontent/2666.pdf Faculty Publications text 2002 ftlouisianastuir https://doi.org/10.1073/pnas.102175899 2023-05-28T18:21:06Z Explanations for biogeographic disjunctions involving South America and Africa typically invoke vicariance of western Gondwanan biotas or long distance dispersal. These hypotheses are problematical because many groups originated and diversified well after the last known connection between Africa and South America (≈105 million years ago), and it is unlikely that "sweepstakes" dispersal accounts for many of these disjunctions. Phylogenetic analyses of the angiosperm clade Malpighiaceae, combined with fossil evidence and molecular divergence-time estimates, suggest an alternative hypothesis to account for such distributions. We propose that Malpighiaceae originated in northern South America, and that members of several clades repeatedly migrated into North America and subsequently moved via North Atlantic land connections into the Old World during episodes starting in the Eocene, when climates supported tropical forests. This Laurasian migration route may explain many other extant lineages that exhibit western Gondwanan distributions. Text North Atlantic LSU Digital Commons (Louisiana State University) Proceedings of the National Academy of Sciences 99 10 6833 6837 |
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LSU Digital Commons (Louisiana State University) |
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description |
Explanations for biogeographic disjunctions involving South America and Africa typically invoke vicariance of western Gondwanan biotas or long distance dispersal. These hypotheses are problematical because many groups originated and diversified well after the last known connection between Africa and South America (≈105 million years ago), and it is unlikely that "sweepstakes" dispersal accounts for many of these disjunctions. Phylogenetic analyses of the angiosperm clade Malpighiaceae, combined with fossil evidence and molecular divergence-time estimates, suggest an alternative hypothesis to account for such distributions. We propose that Malpighiaceae originated in northern South America, and that members of several clades repeatedly migrated into North America and subsequently moved via North Atlantic land connections into the Old World during episodes starting in the Eocene, when climates supported tropical forests. This Laurasian migration route may explain many other extant lineages that exhibit western Gondwanan distributions. |
format |
Text |
author |
Davis, Charles C. Bell, Charles D. Mathews, Sarah Donoghue, Michael J. |
spellingShingle |
Davis, Charles C. Bell, Charles D. Mathews, Sarah Donoghue, Michael J. Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae |
author_facet |
Davis, Charles C. Bell, Charles D. Mathews, Sarah Donoghue, Michael J. |
author_sort |
Davis, Charles C. |
title |
Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae |
title_short |
Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae |
title_full |
Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae |
title_fullStr |
Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae |
title_full_unstemmed |
Laurasian migration explains Gondwanan disjunctions: Evidence from Malpighiaceae |
title_sort |
laurasian migration explains gondwanan disjunctions: evidence from malpighiaceae |
publisher |
LSU Digital Commons |
publishDate |
2002 |
url |
https://digitalcommons.lsu.edu/biosci_pubs/2666 https://doi.org/10.1073/pnas.102175899 https://digitalcommons.lsu.edu/context/biosci_pubs/article/3665/viewcontent/2666.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Faculty Publications |
op_relation |
https://digitalcommons.lsu.edu/biosci_pubs/2666 doi:10.1073/pnas.102175899 https://digitalcommons.lsu.edu/context/biosci_pubs/article/3665/viewcontent/2666.pdf |
op_doi |
https://doi.org/10.1073/pnas.102175899 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
99 |
container_issue |
10 |
container_start_page |
6833 |
op_container_end_page |
6837 |
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1768392776054996992 |