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5 results for “Cyclura”
Interactions data on Iguana iguana and other taxa from the Cayman Islands, extended with interaction data of Cyclura lewisi
<p>Biotic interactions data of the Green Iguana (<em>Iguana iguana), </em>extracted from the literature. Extended data set with species interaction data of the Blue Iguana (<em>Cyclura lewisi</em>) from the Cayman Islands.</p>
Data from: Genetic structure at three spatial scales is consistent with limited philopatry in Ricord's Rock Iguanas (Cyclura ricordii)
Cyclura ricordii is an endemic iguana from Hispaniola Island and is threatened on the IUCN Red List. The main threats are predation by introduced mammals, habitat destruction, and hunting pressure. The present study focused on two nesting sites from Pedernales Province in the Dominican Republic. The hypothesis that natal philopatry influences dispersal and nest site selection was tested. Monitoring and sampling took place in 2012 and 2013. Polymorphic markers were used to evaluate whether natal philopatry limits dispersal at multiple spatial scales. Ripley's K revealed that nests were significantly clustered at multiple scales, when both nesting sites were considered and within each nesting site. This suggests a patchy, non-random distribution of nests within nest sites. Hierarchical AMOVA revealed that nest site aggregations did not explain a significant portion of genetic variation within nesting sites. However, a small but positive correlation between geographic and genetic distance was detected using a Mantel's test. Hence, the relationship between geographic distance and genetic distance among hatchlings within nest sites, while detectable, was not strong enough to have a marked effect on fine scale genetic structure. Spatial and genetic data combined determined that the nesting sites included nesting females from multiple locations, and the hypothesis of 'natal philopatry', was not supported because females nesting in the same cluster were no more closely related to each other than to other females from the same nesting site. These findings imply that nesting aggregations are more likely associated with cryptic habitat variables contributing to optimal nesting conditions.
Data from: Phylogenomics and historical biogeography of West Indian Rock Iguanas (genus Cyclura)
<p>The genus <em>Cyclura</em> includes nine extant species and six subspecies of West Indian Rock Iguanas and is one of the most imperiled genera of squamate reptiles globally. An understanding of species diversity, evolutionary relationships, diversification, and historical biogeography in this group is crucial for implementing sound long-term conservation strategies. We collected DNA samples from 1–10 individuals per taxon from all <em>Cyclura</em> taxa (n = 70 ingroup individuals), focusing where possible on incorporating individuals from different populations of each species. We also collected 1–2 individuals from each of seven outgroup species of iguanas (<em>Iguana delicatissima</em>; five <em>Ctenosaura</em> species) and <em>Anolis sagrei</em> (n = 12 outgroup individuals). We used targeted genomic sequence capture to isolate and to sequence 1,872 loci comprising of 687,308 base pairs (bp) from each of the 82 individuals from across the nuclear genome. We extracted mitochondrial reads and assembled and annotated mitogenomes for all <em>Cyclura</em> taxa plus outgroup species. We present well-supported phylogenomic gene tree/species tree analyses for all extant species of <em>Cyclura</em> using ASTRAL-III, SVDQuartets, and starBEAST methods, and discuss the taxonomic, biogeographic, and conservation implications of these data. We find a most recent common ancestor of the genus 9.91 million years ago. The earliest divergence within <em>Cyclura</em> separates <em>C. pinguis</em> from a clade comprising all <em>Cyclura</em> except <em>C. pinguis</em>. Within the latter group, a clade comprising <em>C. carinata</em> from the southern Lucayan Islands and <em>C. ricordii</em> from Hispaniola is the sister taxon to a clade comprising the other <em>Cyclura</em>. Among the other <em>Cyclura</em>, the species <em>C. cornuta</em> and <em>C. stejneger</em>i (from Hispaniola and Isla Mona) form the sister taxon to a clade of species from Jamaica (<em>C. collei</em>), Cuba and Cayman Islands (<em>C. nubila</em>), and the eastern (<em>C. rileyi</em>) and western (<em>C. cychlura</em>) Lucayan Islands. <em>Cyclura</em> <em>cychlura</em> and <em>C. rileyi</em> form a clade whose sister taxon is <em>C. nubila</em>. <em>Cyclura</em> collei is the sister taxon to these three species combined.</p>
Data from: Phylogenomics and historical biogeography of West Indian Rock Iguanas (genus Cyclura)
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Data from: Genetic structure at three spatial scales is consistent with limited philopatry in Ricord’s Rock Iguanas (Cyclura ricordii)
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