A phylogenetic hypothesis for Crocodylus (Crocodylia) based on mitochondrial DNA: Evidence for a trans-Atlantic voyage from Africa to the New World

Meredith, Robert W.; Hekkala, Evon R.; Amato, George; Gatesy, John

doi:10.1016/j.ympev.2011.03.026

Cited by 78 publications

(86 citation statements)

References 53 publications

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“…The New World crocodiles are supported by two unambiguous synapomorphies: the dorsal surface of rostrum bears medial dorsal boss (15-1) and the palatine-pterygoid suture lies nearly at the posterior angle of suborbital fenestra (20-0). These characters seem to have evolved shortly after the dispersion event from the Old World to the New World 19 , as they are present in C. falconensis sp. nov. already early in the Pliocene.…”

Section: Systematic Section Crocodylia Gmelin 1789mentioning

confidence: 92%

“…C. acutus and C. intermedius share an anterior process of palatines wider than the posterior process (32-2). Although only one feature groups them together, the sister-group relationship between C. acutus and C. intermedius has been already proposed by molecular phylogenies 7,[19][20][21] . The New World clade is a wellsupported group and has accumulated distinctive differences from its sister taxon, C. niloticus, and other extant and extinct crocodile species (Fig.…”

Section: Systematic Section Crocodylia Gmelin 1789mentioning

confidence: 99%

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Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics

et al. 2013

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Section: Systematic Section Crocodylia Gmelin 1789mentioning

confidence: 92%

Section: Systematic Section Crocodylia Gmelin 1789mentioning

confidence: 99%

Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics

et al. 2013

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“…New World crocodiles have a complex history that is continuing to be unraveled by the growing body of research dedicated to this topic (Dever and Densmore, 2001;Hekkala, 2004;Ray et al, 2004;Cedeño-Vazquez et al, 2008;Rodriguez et al, 2008;Weaver et al, 2008;Machkour-M'Rabet et al, 2009;Meredith et al, 2011;Milián-García et al, 2011;Oaks, 2011;Rodriguez et al, 2011). It has been previously recognized that the lineages endemic to Cuba are unique, corresponding to the morphologically divergent Cuban crocodile (C. rhombifer) and a cryptic lineage morphologically similar to the American crocodile (β) (Weaver et al, 2008;Milián-García et al, 2011), most likely the result of mitochondrial capture (Rodriguez et al, 2011).…”

Section: Population History and Taxonomic Statusmentioning

confidence: 99%

“…For example, some specimens assigned to the Cuban crocodile abroad have been used in the establishment of phylogenetic hypotheses for the still unresolved genus Crocodylus (Meredith et al, 2011). The primary identification for these specimens was originally based on morphological characters that have proven to be insufficient in most hybridization scenarios involving Crocodylus spp.…”

Section: Hybridization Between Cuban and American Crocodilesmentioning

confidence: 99%

Genetic evidence of hybridization between the critically endangered Cuban crocodile and the American crocodile: implications for population history and in situ/ex situ conservation

et al. 2014

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Inter-specific hybridization may be especially detrimental when one species is extremely rare and the other is abundant owing to the potential for genetic swamping. The Cuban crocodile (Crocodylus rhombifer) is a critically endangered island endemic largely restricted to Zapata Swamp, where it is sympatric with the widespread American crocodile (C. acutus). An on-island, C. rhombifer captive breeding program is underway with the goals of maintaining taxonomic integrity and providing a source of individuals for reintroduction, but its conservation value is limited by lack of genetic information. Here we collected mtDNA haplotypic and nuclear genotypic data from wild and captive C. rhombifer and C. acutus in Cuba to: (1) investigate the degree of inter-specific hybridization in natural (in situ) and captive (ex situ) populations; (2) quantify the extent, distribution and in situ representation of genetic variation ex situ; and (3) reconstruct founder relatedness to inform management. We found high levels of hybridization in the wild (49.1%) and captivity (16.1%), and additional evidence for a cryptic lineage of C. acutus in the Antilles. We detected marginally higher observed heterozygosity and allelic diversity ex situ relative to the wild population, with captive C. rhombifer exhibiting over twice the frequency of private alleles. Although mean relatedness was high in captivity, we identified 37 genetically important individuals that possessed individual mean kinship (MK) values lower than the population MK. Overall, these results will guide long-term conservation management of Cuban crocodiles for maintaining the genetic integrity and viability of this species of high global conservation value.

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“…Bioinformatics cannot be ignored, it consists million of genetic sequences information database and various valuable analyzing tools (Mount, 2004). We observed mtDNA are popular and widely used in Crocodylian phylogenetic studies, together with their sequences information deposited in GenBank (see McAliley et al, 2006;Li et al, 2007;Meganathan et al, 2010;Meganathan et al, 2011;Meredith et al, 2011).…”

Section: Introductionmentioning

confidence: 81%

DEVELOPMENT OF SPECIFIC PRIMERS FOR INTER SPECIES PHYLOGENY RELATIONSHIP ON Crocodilian sp

Jayanto

Daryono

2015

KLS

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Poaching, trafficking, and illegal product trading are classic activities which frequently faced by Crocodilian group. To overcome, laws need supporting methods for a decision of these all activities which threaten crocodile species. This will require species identification that associated to taxonomy classification. Crocodilian species are very similar in morphology. This may result to a false identification especially when working on incomplete specimen. Currently, twenty-four existing Crocodilian species are continuously revised to improve the precise placement and/or acceptance of certain species on Crocodilian classification. Herein we address this issue using Cytochrome-b. The idea was to obtain genus specific primer from Cytochrome-b and then tested the precision of the designed primers using bioinformatics tools' Primer-BLAST and CLC sequence Viewer 6. The designed primers showed a highly specificity on species level. The phylogenetic tree constructed by is relatively precise compared to reported phylogenetic trees. These specific primers together with the genus specific primers may give valuable and important support for the effective and efficient identification of Crocodilian group.

show abstract

A phylogenetic hypothesis for Crocodylus (Crocodylia) based on mitochondrial DNA: Evidence for a trans-Atlantic voyage from Africa to the New World

Cited by 78 publications

References 53 publications

Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics

Crocodylian diversity peak and extinction in the late Cenozoic of the northern Neotropics

Genetic evidence of hybridization between the critically endangered Cuban crocodile and the American crocodile: implications for population history and in situ/ex situ conservation

DEVELOPMENT OF SPECIFIC PRIMERS FOR INTER SPECIES PHYLOGENY RELATIONSHIP ON Crocodilian sp

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