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Evolutionary History of Cuban Crocodiles <I>Crocodylus rhombifer</I> and <I>Crocodylus acutus</I> Inferred From Multilocus Markers

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dc.contributor.author Milian-Garcia, Yoamel en
dc.contributor.author Venegas-Anaya, Miryam D. en
dc.contributor.author Frias-Soler, Roberto en
dc.contributor.author Crawford, Andrew J. en
dc.contributor.author Ramos-Targarona, Roberto en
dc.contributor.author Rodriguez-Soberon, Roberto en
dc.contributor.author Alonso-Tabet, Manuel en
dc.contributor.author Thorbjarnarson, John en
dc.contributor.author Sanjur, Oris I. en
dc.contributor.author Espinosa-Lopez, Georgina en
dc.contributor.author Bermingham, Eldredge en
dc.date.accessioned 2012-07-31T13:49:57Z
dc.date.available 2012-07-31T13:49:57Z
dc.date.issued 2011
dc.identifier.citation Milian-Garcia, Yoamel, Venegas-Anaya, Miryam D., Frias-Soler, Roberto, Crawford, Andrew J., Ramos-Targarona, Roberto, Rodriguez-Soberon, Roberto, Alonso-Tabet, Manuel, Thorbjarnarson, John, Sanjur, Oris I., Espinosa-Lopez, Georgina, and Bermingham, Eldredge. 2011. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F18659">Evolutionary History of Cuban Crocodiles Crocodylus rhombifer and Crocodylus acutus Inferred From Multilocus Markers</a>." <em>Journal of Experimental Zoology Part A-Ecological Genetics and Physiology</em>. 315A (6):358&ndash;375. <a href="https://doi.org/10.1002/jez.683">https://doi.org/10.1002/jez.683</a> en
dc.identifier.issn 1932-5223
dc.identifier.uri http://hdl.handle.net/10088/18659
dc.description.abstract Among crocodilians, Crocodylus rhombifer is one of the world&#39;s most endangered species with the smallest natural distribution. In Cuba, this endemic species coexists with the American crocodile (Crocodylus acutus). Hybridization between these two species is well known in captivity and might occur in the wild, but has never been demonstrated genetically. Here, we combined molecular data with environmental, geographic, and fossil data to infer the evolutionary history of Crocodylus in the Cuban Archipelago, and to evaluate genealogical support for species boundaries. We analyzed seven microsatellite loci plus DNA sequence data from nuclear (RAG-1) and mitochondrial (cytochrome b and cytochrome oxidase I) genes from 89 wild-caught individuals in Cuba, Grand Cayman Island, Jamaica, and Central America, and two samples from zoo collections. Microsatellites showed evidence of introgression, suggesting potential hybridization among Cuban groups. In Cuba, C. acutus contained one mitochondrial DNA (mtDNA) haplotype, whereas C. rhombifer contained two haplotypes. MtDNA data showed that C. acutus is paraphyletic with respect to C. rhombifer, revealing 1% sequence divergence between species within Cuba vs. 8% divergence between Cuban forms and mainland C. acutus. We suggest that hybridization has been a historical as well as a current phenomenon between C. acutus and C. rhombifer. These findings suggest that long-term conservation of crocodiles in Cuba will require identification of genetically pure and hybrid individuals, and a decrease in anthropogenic activities. We also recommend more extensive morphological and genetic analyses of Cuban population to establish clear boundaries of the hybrid zone between C. acutus and C. rhombifer. J. Exp. Zool. 315: 358-375, 2011. (C) 2011 Wiley-Liss, Inc. en
dc.relation.ispartof Journal of Experimental Zoology Part A-Ecological Genetics and Physiology en
dc.title Evolutionary History of Cuban Crocodiles <I>Crocodylus rhombifer</I> and <I>Crocodylus acutus</I> Inferred From Multilocus Markers en
dc.type Journal Article en
dc.identifier.srbnumber 101309
dc.identifier.doi 10.1002/jez.683
rft.jtitle Journal of Experimental Zoology Part A-Ecological Genetics and Physiology
rft.volume 315A
rft.issue 6
rft.spage 358
rft.epage 375
dc.description.SIUnit Peer-reviewed en
dc.description.SIUnit STRI en
dc.citation.spage 358
dc.citation.epage 375

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