A TIME-CALIBRATED SPECIES TREE OF CROCODYLIA REVEALS A RECENT RADIATION OF THE TRUE CROCODILES
True crocodiles (Crocodylus) are the most broadly distributed, ecologically diverse, and species-rich crocodylian genus, comprising about half of extant crocodylian diversity and exhibiting a circumtropical distribution. Crocodylus traditionally has been viewed as an ancient group of morphologically...
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| Veröffentlicht in: | Evolution 2011-11, Vol.65 (11), p.3285-3297 |
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| description | True crocodiles (Crocodylus) are the most broadly distributed, ecologically diverse, and species-rich crocodylian genus, comprising about half of extant crocodylian diversity and exhibiting a circumtropical distribution. Crocodylus traditionally has been viewed as an ancient group of morphologically conserved species that originated in Africa prior to continental breakup. In this study, these long-held notions about the temporal and geographic origin of Crocodylus are tested using DNA sequence data of 10 loci from 76 individuals representing all 23 crocodylian species. I infer a time-calibrated species tree of all Crocodylia and estimate the spatial pattern of diversification within Crocodylus. For the first time, a fully resolved phylogenetic estimate of all Crocodylia is well-supported. The results overturn traditional views of the evolution of Crocodylus by demonstrating that the true crocodiles are not "living-fossils" that originated in Africa. Rather, Crocodylus originated from an ancestor in the tropics of the Late Miocene Indo-Pacific, and rapidly radiated and dispersed around the globe during a period marked by mass extinctions of fellow crocodylians. The findings also reveal more diversity within the genus than is recognized by current taxonomy. |
| doi_str_mv | 10.1111/j.1558-5646.2011.01373.x |
| format | Article |
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Evolution© 2011 The Society for the Study of Evolution.</rights><rights>Copyright Society for the Study of Evolution Nov 2011</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5223-4ac0e2e4c1e81f2aad16aaf9ad7351d457b007e6f0621a553af7560d7fbb21143</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/41317045$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/41317045$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,1411,27901,27902,45550,45551,57992,58225</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22023592$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Oaks, Jamie R.</creatorcontrib><title>A TIME-CALIBRATED SPECIES TREE OF CROCODYLIA REVEALS A RECENT RADIATION OF THE TRUE CROCODILES</title><title>Evolution</title><addtitle>Evolution</addtitle><description>True crocodiles (Crocodylus) are the most broadly distributed, ecologically diverse, and species-rich crocodylian genus, comprising about half of extant crocodylian diversity and exhibiting a circumtropical distribution. 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The findings also reveal more diversity within the genus than is recognized by current taxonomy.</description><subject>Alligators</subject><subject>Alligators and Crocodiles - genetics</subject><subject>Animals</subject><subject>Base Sequence</subject><subject>Biogeography</subject><subject>Biological taxonomies</subject><subject>Crocodiles</subject><subject>Crocodylus</subject><subject>Dirichlet process</subject><subject>Evolution</subject><subject>Evolution, Molecular</subject><subject>Fossils</subject><subject>Likelihood Functions</subject><subject>Modeling</subject><subject>Models, Genetic</subject><subject>Molecular Sequence Data</subject><subject>Morphology</subject><subject>multispecies coalescent</subject><subject>Phylogenetics</subject><subject>Phylogeny</subject><subject>Phylogeography</subject><subject>relaxed clock</subject><subject>Sequence Analysis, DNA</subject><subject>Species</subject><subject>Species Specificity</subject><subject>Taxa</subject><subject>Taxonomy</subject><issn>0014-3820</issn><issn>1558-5646</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpdkU9P2zAYh61pCDrgI2yKduGU8L7-2xx2CKkLkUKD0gDaDrPcxpGatZQlrVa-_RLa9TBf_Eq_57Et_wjxEALs1nUdoBBDX0guAwqIASBTLNh9IINj8JEMAJD7bEjhjHxq2xoAQoHhKTmjFCgTIR2Qn5FXJPfaj6M0ucmjQo-86YOOEz31ilxrLxt7cZ7F2eh7mkRerp90lE69for1pPDyaJRERZJNerC40530qA9GkurpBTmp7LJ1l4f9nDyOdRHf-Wl2m3R3-nNBKfO5nYOjjs_RDbGi1pYora1CWyomsORCzQCUkxVIilYIZislJJSqms0oImfn5Gp_7muz_r117casFu3cLZf2xa23rQkBJAfJoCO__kfW623z0j2ug1ANw_Ad-nKAtrOVK81rs1jZ5s38-7cO-LYH_iyW7u2YI5i-H1ObvgbT12D6fsx7P2Zn9FPWT53_ee_X7WbdHH2ODBVw0eX-Pl-0G7c75rb5ZaRiSpjnya35Ie-flRrfGM7-AkEIkXk</recordid><startdate>201111</startdate><enddate>201111</enddate><creator>Oaks, Jamie R.</creator><general>Blackwell Publishing Inc</general><general>Wiley Subscription Services, Inc</general><general>Oxford University Press</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7QG</scope><scope>7QL</scope><scope>7QP</scope><scope>7QR</scope><scope>7SN</scope><scope>7SS</scope><scope>7TK</scope><scope>7TM</scope><scope>7U9</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>201111</creationdate><title>A TIME-CALIBRATED SPECIES TREE OF CROCODYLIA REVEALS A RECENT RADIATION OF THE TRUE CROCODILES</title><author>Oaks, Jamie R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5223-4ac0e2e4c1e81f2aad16aaf9ad7351d457b007e6f0621a553af7560d7fbb21143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Alligators</topic><topic>Alligators and Crocodiles - 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| subjects | Alligators Alligators and Crocodiles - genetics Animals Base Sequence Biogeography Biological taxonomies Crocodiles Crocodylus Dirichlet process Evolution Evolution, Molecular Fossils Likelihood Functions Modeling Models, Genetic Molecular Sequence Data Morphology multispecies coalescent Phylogenetics Phylogeny Phylogeography relaxed clock Sequence Analysis, DNA Species Species Specificity Taxa Taxonomy |
| title | A TIME-CALIBRATED SPECIES TREE OF CROCODYLIA REVEALS A RECENT RADIATION OF THE TRUE CROCODILES |
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