10.5061/DRYAD.53JB9
Hanot, Pauline
Structure et Instabilité des Génomes
Herrel, Anthony
French National Centre for Scientific Research
Guintard, Claude
CentraleSupélec
Cornette, Raphaël
Structure et Instabilité des Génomes
Data from: Morphological integration in the appendicular skeleton of two
domestic taxa: the horse and donkey
Dryad
dataset
2017
Appendicular skeleton
domestic equids
Artificial selection
2017-08-21T14:27:11Z
2017-08-21T14:27:11Z
en
https://doi.org/10.1098/rspb.2017.1241
4414392 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Organisms are organized into suites of anatomical structures that
typically covary when developmentally or functionally related, and this
morphological integration plays a determinant role in evolutionary
processes. Artificial selection on domestic species causes strong
morphological changes over short time spans, frequently resulting in a
wide and exaggerated phenotypic diversity. This raises the question of
whether integration constrains the morphological diversification of
domestic species and how natural and artificial selection may impact
integration patterns. Here, we study the morphological integration in the
appendicular skeleton of domestic horses and donkeys, using
three-dimensional geometric morphometrics on 75 skeletons. Our results
indicate that a strong integration is inherited from developmental
mechanisms which interact with functional factors. This strong integration
reveals a specialization in the locomotion of domestic equids, partly for
running abilities. We show that the integration is stronger in horses than
in donkeys, probably because of a greater degree of specialization and
predictability of their locomotion. Thus, the constraints imposed by
integration are weak enough to allow important morphological changes and
the phenotypic diversification of domestic species.
Hanot_et_al_PC_scoresPC scores used in the shape covariation analyses. In
capital letters: the couple in which the concerned bone (in lower case) is
included (scap : scapula ; hum : humerus ; rad : radius-ulna ; mtc :
metacarpal bone ; pa1 : proximal anterior phalanx ; pa2 : middle anterior
phalanx ; pa3 : distal anterior phalanx ; cox: coxal bone; fem: femur;
tib: tibia; tal: talus; cal: calcaneus; mtt: metatarsal bone; pp1 :
proximal posterior phalanx ; pp2 : middle posterior phalanx ; pp3 : distal
posterior phalanx)