Search results for "Population variation"

showing 2 items of 2 documents

3D geometric morphometric analysis of variation in the human lumbar spine

2019

[Objectives]: The shape of the human lumbar spine is considered to be a consequence of erect posture. In addition, several other factors such as sexual dimorphism and variation in genetic backgrounds also influence lumbar vertebral morphology. Here we use 3D geometric morphometrics (GM) to analyze the 3D morphology of the lumbar spine in different human populations, exploring those potential causes of variation.

AdultMalemusculoskeletal diseasesMediterranean CaucasianAdolescentLordosisSouth AfricanPopulationBlack Peoplepopulation variationLumbar vertebraeBiologylordosisWhite PeopleAnthropology PhysicalSouth AfricaYoung AdultImaging Three-DimensionalLumbarmedicineHumansIsraeleducationAgedMorphometricseducation.field_of_studyLumbar VertebraeGeneralized Procrustes analysisAnatomyMiddle Agedmedicine.diseaseSexual dimorphismmedicine.anatomical_structureSpainAnthropologysexual dimorphismLordosisFemaleAnatomyTomography X-Ray ComputedVertebral column
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Sex and population variation in ultraviolet reflectance of colour patches in Gallotia galloti (Fam. Lacertidae) from Tenerife (Canary Islands)

2005

Sex and population differences in the ultraviolet (UV) reflectance patterns of two phenotypically divergent lacertids from Tenerife, Gallotia galloti eisentrauti and G. g. galloti, are described. Adults in both populations have rows of lateral and ventro-lateral blue patches on either side of the trunk that show a single peak of reflectance in the near UV. The lateral patches of males are more intensely reflective than those of females, but females have more chromatic and UV-shifted lateral patches than males. Most G. g. eisentrauti and some G. g. galloti also have blue cheek patches on either side of the gular area. Male cheek patches have reflectance peaks in the near UV, whereas those of…

education.field_of_studyGallotiaDichromatismbiologyPopulationPopulation variationZoologyGallotia gallotiAnatomymedicine.disease_causebiology.organism_classificationReflectivitymedicineLacertidaeAnimal Science and ZoologyeducationEcology Evolution Behavior and SystematicsUltravioletJournal of Zoology
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