Search results for "Cryptic-species"

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Morphological and genetic analyses reveal a cryptic species complex in the echinoid Echinocardium cordatum and rule out a stabilizing selection expla…

2014

14 pages; International audience; Preliminary analyses revealed the presence of at least five mitochondrial clades within the widespread sea urchin Echinocardium cordatum (Spatangoida). In this study, we analyzed the genetic (two mitochondrial and two nuclear sequence loci) and morphological characteristics (20 indices) from worldwide samples of this taxon to establish the species limits, morphological diversity and differentiation. Co-occurring spatangoid species were also analyzed with mitochondrial DNA. The nuclear sequences confirm that mitochondrial lineages correspond to true genetic entities and reveal that two clades (named A and B1) hybridize in their sympatry area, although a more…

0106 biological sciences0301 basic medicineEchinocardium cordatumMorphologyMitochondrial DNASpecies complexZoologyBiology[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomyDNA Mitochondrial010603 evolutionary biology01 natural sciences03 medical and health sciencesEffective population sizeGenetic variationGeneticsAnimals14. Life underwaterSelection GeneticStabilizing selectionCladeMolecular BiologyEcology Evolution Behavior and SystematicsCell NucleusModels Genetic[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]Genetic Variationbiology.organism_classificationMitochondriaMitochondrialEurope030104 developmental biologyTaxonCryptic-species[ SDV.BID.EVO ] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]Sea UrchinsEPIC[ SDV.BID.SPT ] Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy
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