Dispelling dog dogma: an investigation of heterochrony in dogs using 3D geometric morphometric analysis of skull shape

@article{Drake2011DispellingDD,
  title={Dispelling dog dogma: an investigation of heterochrony in dogs using 3D geometric morphometric analysis of skull shape},
  author={Abby Grace Drake},
  journal={Evolution \& Development},
  year={2011},
  volume={13}
}
  • A. Drake
  • Published 1 March 2011
  • Biology
  • Evolution & Development
SUMMARY Heterochrony is an evolutionary mechanism that generates diversity via perturbations of the rate or timing of development that requires very little genetic innovation. As such, heterochrony is thought to be a common evolutionary mechanism in the generation of diversity. Previous research has suggested that dogs evolved via heterochrony and are paedomorphic wolves. This study uses three‐dimensional landmark‐based coordinate data to investigate heterochronic patterns within the skull… 
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References

SHOWING 1-10 OF 60 REFERENCES
Size, shape and development in the evolution of the domestic dog
The pace of morphological change: historical transformation of skull shape in St Bernard dogs
TLDR
The dramatic modification of the St Bernard skull demonstrates that selection can achieve sustained and substantial change and can completely overcome constraints such as allometry.
Large‐Scale Diversification of Skull Shape in Domestic Dogs: Disparity and Modularity
The variation among domestic dog breeds offers a unique opportunity to study large‐scale diversification by microevolutionary mechanisms. We use geometric morphometrics to quantify the diversity of
Heterochrony and geometric morphometrics: a comparison of cranial growth in Pan paniscus versus Pan troglodytes
TLDR
A geometric morphometric approach is exemplified using adult and subadult crania of 48 Pan paniscus and 47 Pan troglodytes specimens to reject the hypothesis of global heterochrony in the cranium of Pan as well as regional heterochronsy for the lower face, the upper face, and the neurocranium.
CRANIAL MORPHOLOGY OF DOMESTIC AND WILD CANIDS: THE INFLUENCE OF DEVELOPMENT ON MORPHOLOGICAL CHANGE
  • R. Wayne
  • Biology
    Evolution; international journal of organic evolution
  • 1986
TLDR
The results demonstrate that the domestic dog is morphologically distinct from all other canids except its close relatives, the wolf‐like canids.
Heterochronic Approaches to the Study of Locomotion
TLDR
The goal of heterochrony is to understand the proximate causes of differences among adult phenotypes of closely related species, and understanding how, through development, morphology and behavior emerge, and how developmental trajectories themselves evolve.
Skull variation in Dinaric–Balkan and Carpathian gray wolf populations revealed by geometric morphometric approaches
TLDR
It is presumed that the observed morphometric divergence between the populations is not only a relic of the last glacial maximum but was further strengthened and shaped by synergistic effects of environmental factors and social behavior (territoriality and a dispersal mechanism influenced by the natal habitat).
Heterochrony and heterotopy: stability and innovation in the evolution of form
TLDR
It is argued that the study of heterochrony has been bound to an analytical formalism that virtually precludes the recognition of heterotopy, so a new framework for the construction of ontogenetic trajectories is provided and their analysis in a phylogenetic context is illustrated.
Heterochrony and allometry: the analysis of evolutionary change in ontogeny
  • C. Klingenberg
  • Biology
    Biological reviews of the Cambridge Philosophical Society
  • 1998
TLDR
This review examines how several methodological frameworks to analyse heterochrony compare ancestral and descendant ontogenies, emphasizing their differences and the potential for contradictory results from analyses using different frameworks.
...
...