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Torsional resistance as a principal component of the structural design of long bones: comparative multivariate evidence in birds.
Here we study the occurrence of torsion-resisting morphological and histological features (thin bone walls, circular shaft cross-section, oblique collagen fibers, and laminar tissue arrangement) in aExpand
Bone typology and growth rate: testing and quantifying 'Amprino's rule' in the mallard (Anas platyrhynchos).
Periosteal bone histology expresses its rate of deposition. This fundamental relationship between bone structure and growth dynamics, first assumed by Amprino many decades ago, was quantified inExpand
Assessing a relationship between bone microstructure and growth rate: a fluorescent labelling study in the king penguin chick (Aptenodytes patagonicus)
SUMMARY Microstructure–function relationships remain poorly understood in primary bone tissues. The relationship between bone growth rate and bone tissue type, although documented in some species byExpand
Phylogenetic signal in bone microstructure of sauropsids.
In spite of the fact that the potential usefulness of bone histology in systematics has been discussed for over one and a half centuries, the presence of a phylogenetic signal in the variation ofExpand
Laminar bone as an adaptation to torsional loads in flapping flight
Using a new histometric method, the orientation of primary osteons was measured in the main long bones of adult mallards (Anas platyrhynchos). In the light of previous biomechanical and ontogeneticExpand
Phylogenetic, functional, and structural components of variation in bone growth rate of amniotes
SUMMARY The biological features observed in every living organism are the outcome of three sets of factors: historical (inherited by homology), functional (biological adaptation), and structuralExpand
Development of Fearfulness in Birds: Genetic Factors Modulate Non-Genetic Maternal Influences
The development of fearfulness and the capacity of animals to cope with stressful events are particularly sensitive to early experience with mothers in a wide range of species. However, intrinsicExpand
Towards a Postural Indicator of Back Pain in Horses (Equus caballus)
Postures have long been used and proved useful to describe animals’ behaviours and emotional states, but remains difficult to assess objectively in field conditions. A recent study performed onExpand
3D tracking of animals in the field using rotational stereo videography
We present a method for tracking the path of animals in the field, based on stereo videography and aiming-angle measurements, combined in a single, rotational device. Expand
Relationship between bone growth rate and the thickness of calcified cartilage in the long bones of the Galloanserae (Aves)
The histological features of mineralized tissues can be preserved for hundreds of millions of years, and are therefore important potential sources of information for reconstructing the life historyExpand