GEOGRAPHIC VARIATION IN CRANIAL MORPHOLOGY IN THRICHOMYS APEREOIDES (RODENTIA: ECHIMYIDAE). I. GEOMETRIC DESCRIPTORS AND PATTERNS OF VARIATION IN SHAPE
Open Access
- 1 May 2002
- journal article
- Published by Oxford University Press (OUP) in Journal of Mammalogy
- Vol. 83 (2), 333-344
- https://doi.org/10.1644/1545-1542(2002)083<0333:gvicmi>2.0.co;2
Abstract
Geometric descriptors were used to describe variation in cranial shape within and among populations of the echimyid rodent Thrichomys apereoides from localities in northeastern, central, and southeastern Brazil. Variation in shape based on dorsal, ventral, and lateral views of the skull, as inferred from contribution of uniform components and partial warps, was attributable to localized rather than global changes in morphology of the skull. Each view of the skull showed characteristic variability in shape among populations and provided different perspectives on patterns of geographic variation. The lateral view of the skull provided the most information content in terms of populations that share similarity in cranial shape and continuity over geographic space.Keywords
This publication has 35 references indexed in Scilit:
- GEOGRAPHIC VARIATION IN CRANIAL MORPHOLOGY IN THRICHOMYS APEREOIDES (RODENTIA: ECHIMYIDAE). II. GEOGRAPHIC UNITS, MORPHOLOGICAL DISCONTINUITIES, AND SAMPLING GAPSJournal of Mammalogy, 2002
- Pattern formation and developmental mechanisms: The cell biological basis of inductive signalingCurrent Opinion in Genetics & Development, 2000
- Shape distances, shape spaces and the comparison of morphometric methodsTrends in Ecology & Evolution, 2000
- Definition of Species of Pouched Four-Eyed Opossums (Didelphidae, Philander)Journal of Mammalogy, 1997
- Polarity, proliferation and the hedgehog pathwayNature Genetics, 1996
- One hundred years of positional informationTrends in Genetics, 1996
- Among-site rate variation and its impact on phylogenetic analysesTrends in Ecology & Evolution, 1996
- The Problem of Pattern and Scale in Ecology: The Robert H. MacArthur Award LectureEcology, 1992
- Nonparametric Confidence and Tolerance Regions in Canonical Variate AnalysisBiometrics, 1989
- Molecular Evolution.Evolution, 1977