Search results for "barriers to dispersal"

showing 3 items of 3 documents

The Pillars of Hercules as a bathymetric barrier to gene flow promoting isolation in a global deep-sea shark (Centroscymnus coelolepis).

2015

Catarino, Diana ... et. al.-- 19 pages, 5 figures, 4 tables, data accessibility http://dx.doi.org/10.5061/dryad.ss368, supporting information http://dx.doi.org/10.1111/mec.13453

Mediterranean climateGene FlowMaleGenotypePopulationMediterraneanPopulation structureDNA MitochondrialIsolationMediterranean seaCentroscymnus coelolepisGenetic driftGeneticsMediterranean SeaAnimals14. Life underwatereducationAtlantic OceanEcology Evolution Behavior and SystematicsmtDNA control regioneducation.field_of_studyPacific OceanbiologyEcologySequence Analysis DNAbiology.organism_classificationBiological EvolutionBarriers to dispersalGenetic divergenceGenetics PopulationDeep-sea sharkSharksBiological dispersalFemaleMicrosatellite RepeatsMolecular ecology
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Impact of landscape on spatial genetic structure and diversity ofCoenagrion mercuriale(Zygoptera:Coenagrionidae) in northern France

2015

AbstractLoss and fragmentation of habitat is a current main cause of biodiversity loss in freshwater habitats. Odonates (dragonflies and damselflies) depend on these habitats to complete their development. Fragmentation may be a particular threat for odonates because it generates a network of small habitat patches within which populations could suffer from isolation and loss of genetic diversity. The southern damselfly Coenagrion mercuriale is categorized on the IUCN red list as Near Threatened, largely because of population fragmentation and demographic declines associated with changes in land use. Small populations at the margin of this species’ range are of particular concern because the…

Population fragmentation[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE]Near-threatened speciesHabitat fragmentationOdonataEcologybiologyEcologydamselfliesfungisource–sink population structureBiodiversity15. Life on landAquatic Sciencebiology.organism_classificationbarriers to dispersalCoenagrionidaeDamselflyta1181Biological dispersalpopulation genetic structureCoenagrion mercurialehabitat fragmentationComputingMilieux_MISCELLANEOUSEcology Evolution Behavior and SystematicsFreshwater Science
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Data from: The Pillars of Hercules as a bathymetric barrier to gene-flow promoting isolation in a global deep-sea shark (Centroscymnus coelolepis)

2015

Knowledge of the mechanisms limiting connectivity and gene-flow in deep-sea ecosystems is limited, especially for deep-sea sharks. The Portuguese dogfish (Centroscymnus coelolepis) is a globally distributed and Near Threatened deep-sea shark. C. coelolepis population structure was studied using 11 nuclear microsatellite markers and a 497 bp fragment from the mtDNA Control Region. High levels of genetic homogeneity across the Atlantic (ΦST=-0.0091, FST= 0.0024, P > 0.05) were found suggesting one large population unit at this basin. The low levels of genetic divergence between Atlantic and Australia (ΦST= 0.0744, P<0.01; FST=0.0015, P > 0.05) further suggested that this species may …

medicine and health careMedicinedeep-sea sharkhuman activitiesLife sciencesCentroscymnus coelolepisBarriers to dispersalIsolation
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