HETEROCHRONY WITHIN SPECIES: CRANIOFACIAL GROWTH IN GIANT, STANDARD, AND DWARF RABBITS

@article{Fiorello1997HETEROCHRONYWS,
  title={HETEROCHRONY WITHIN SPECIES: CRANIOFACIAL GROWTH IN GIANT, STANDARD, AND DWARF RABBITS},
  author={Christine V. Fiorello and Rebecca Z. German},
  journal={Evolution},
  year={1997},
  volume={51}
}
Change in developmental timing is one source of heritable variation upon which selection can act. However, the amount of variation possible in ontogenetic trajectories is often unknown. We used three different‐sized conspecific breeds of domestic rabbits to investigate the extent of variation in growth trajectories of craniofacial morphology. The growth and adult morphology of several structures (one soft tissue and 15 skeletal) were quantified and analyzed. We took two views of radiographs at… 

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References

SHOWING 1-10 OF 34 REFERENCES

CRANIAL MORPHOLOGY OF DOMESTIC AND WILD CANIDS: THE INFLUENCE OF DEVELOPMENT ON MORPHOLOGICAL CHANGE

  • R. Wayne
  • Biology
    Evolution; international journal of organic evolution
  • 1986
The results demonstrate that the domestic dog is morphologically distinct from all other canids except its close relatives, the wolf‐like canids.

Heterochrony and Frogs: The Relationship of a Life History Trait to Morphological Form

  • S. Emerson
  • Biology, Psychology
    The American Naturalist
  • 1986
Heterochrony is suggested as a source of these minor shape variants in frogs, since it is known that hind-limb and body lengths scale allometrically in frogs during development, and there are significant differences in relative hind- Limb length in frogs when the developmental time is altered.

Genetical Aspects of Metrical Growth and Form in Animals

  • A. Cock
  • Biology
    The Quarterly Review of Biology
  • 1966
The ontogenesis of those genetic differences in form which are homeomorphic, that is, which can be expressed in terms of meausrements, is considered, and particualar stress is laid on the advantages of longitudinal data and the necessity of adapting the method of analysis to the type of data.

GENETIC COMPONENTS OF SIZE AND SHAPE. I. DYNAMICS OF COMPONENTS OF PHENOTYPIC VARIABILITY AND COVARIABILITY DURING ONTOGENY IN THE LABORATORY RAT

  • W. AtchleyJ. Rutledge
  • Biology, Environmental Science
    Evolution; international journal of organic evolution
  • 1980
Information is provided on the magnitude of heritability of patterns of morphometric size and shape variation, the patterns of genetic covariation in functional character sets and the dynamics of phenotypic variance and covariance components during ontogeny for the laboratory rat.

Relationships among ontogenetic, static, and evolutionary allometry.

  • J. Cheverud
  • Biology, Environmental Science
    American journal of physical anthropology
  • 1982
The patterns of phenotypic, genetic, and environmental allometry are dissimilar; only the environmental allometries show ontogenetic allometric patterns, indicating that phenotypesic allometry may not be an accurate guide to patterns of evolutionary change in size and shape.

Limb morphology of domestic and wild canids: The influence of development on morphologic change

  • R. Wayne
  • Biology, Environmental Science
    Journal of morphology
  • 1986
This study uses bivariate and discriminant function analyses to compare the limb morphology of adult dogs and wild canid species, and then compares ontogenetic allometry of four dog breeds with staticAllometry of domestic andWild canids.

The evolution of growth trajectories and other complex quantitative characters.

Analysis of genetic data from mice shows that the patterns of genetic variation arising from developmental processes impose constraints on evolution of growth trajectories, and these constraints can be quantified to reveal the families of growth trajectoryories that can be produced by selection and those families that cannot.

Geometric Similarity in Allometric Growth: A Contribution to the Problem of Scaling in the Evolution of Size

  • S. Gould
  • Biology
    The American Naturalist
  • 1971
The coefficient b of the power function y = bxa has long been misinterpreted as a measure of size-independent differences between regressions. Just the opposite is true; b is a scale factor that

HETEROCHRONY AND ALLOMETRY: LESSONS FROM THE WATER STRIDER GENUS LIMNOPORUS

A case study of the water strider genus Limnoporus Stål is presented to illuminate the distinct roles that allometry and heterochrony play in integrated studies of the evolution of form.

The Ontogeny of Sexual Dimorphism: Quantitative Models and a Case Study in Labrisomid Blennies (Teleostei: Paraclinus)

A method for testing hypotheses of sex-specific allometric change is presented, and an example of its application in four species of labrisomid blennies is offered, showing that similarity among adult dimorphic character states often resulted from quite different growth patterns, suggesting that resemblance of adult characters among related species is insufficient evidence to conclude character homology.