Show simple item record Logan, Corina J. Clutton-Brock, Tim H.
dc.coverage.spatial United Kingdom 2012-11-12T18:08:34Z 2012-11-12T18:08:34Z 2012-11-05
dc.identifier doi:10.5061/dryad.4t7h2
dc.identifier.citation Logan CJ, Clutton-Brock TH (2012) Validating methods for estimating endocranial volume in individual red deer (Cervus elaphus). Behavioural Processes 92: 143-146.
dc.description Comparing brain sizes is a key method in comparative cognition and evolution. Brain sizes are commonly validated by interspecific comparisons involving animals of varying size, which does not provide a realistic index of their accuracy for intraspecific comparisons. Intraspecific validation of methods for measuring brain size should include animals of the same age and sex to ensure that individual differences can be detected in animals of similar size. In this study we compare three methods of measuring the endocranial volume of 33 red deer skulls to investigate the accuracy of each method. Methods for estimating endocranial volume included scanning each skull using computerised tomography (CT) and quantifying the volume with OsiriX software, filling the cranium with glass beads and measuring the bead volume, and linear measurements (length, width, and height) of the cranium using calipers. CT scan volumes were highly correlated with results from the bead method, but only moderately correlated with the linear method. This study illustrates the importance of validating intraspecies measurement methods, which allows for the accurate interpretation of results.
dc.relation.haspart doi:10.5061/dryad.4t7h2/1
dc.relation.isreferencedby doi:10.1016/j.beproc.2012.10.015
dc.relation.isreferencedby PMID:23137587
dc.subject bead-filling
dc.subject CT scan
dc.subject endocranial volume
dc.subject linear
dc.subject methods
dc.title Data from: Validating methods for estimating endocranial volume in individual red deer (Cervus elaphus)
dc.type Article
dwc.ScientificName Cervus elaphus
dc.contributor.correspondingAuthor Logan, Corina J.
prism.publicationName Behavioural Processes

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Title Red deer endocranial volume measurements
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Description Endocranial volume data were collected on 33 red deer (Cervus elaphus) skulls using four different methods: 1) CT scanning and calculating the endocranial volume with OsiriX software, 2) pouring beads into the skull and measuring their volume in a graduated cylinder, 3) taking linear measurements (length, width, and height of the brain case) using calipers, and 4) entering the skull width into an equation developed by Finarelli (2011) for estimating brain volume.
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