Embryonic skull development in the neotropical viviparous skink Mabuya (Squamata: Scincidae). Desarrollo embrionario del cráneo en la lagartija vivípara Mabuya (Squamata: Scincidae).
DOI:
https://doi.org/10.21829/azm.2015.3131041Palabras clave:
Key words, Skull development, chondrocranium, Mabuya, skin, Scincidae. Palabras clave, Desarrollo craneal, condrocráneo, Scincidae, SquamataResumen
ABSTRACT. The systematics of the Americans skinks of the genus Mabuya have been extensively studied, with new arrangements based on molecular analysis. However, the skeletal morphology, their development and ontogenetic variation have been poorly studied in this genus. We described the embryonic skull development of three species of Mabuya and compare it with the African species Trachylepis capensis. We observed that American genus Mabuya presents differences in the skull development, including the pila antotica, orbitosphenoid, vomer, and the basicranial fenestra closure. These morphological differences in Mabuya species may be interpreted as putative synapomorphic characters.
RESUMEN. La sistemática del género Mabuya ha sido extensamente estudiada en América y se han propuesto varios arreglos taxonómicos con base en análisis moleculares. Sin embargo, aspectos relacionados con la morfología del esqueleto, su desarrollo y variación ontogenética han sido probrementente estudiados en este género. En el presente trabajo se describe el desarrollo embrionario del cráneo en tres especies del género Mabuya y se compara con el de la especie africana Trachylepis capensis. Se encontró que el género Mabuya presenta diferencias en el desarrollo del cráneo respecto a la especie africana, incluyendo la pila antótica, el orbitosfenoides, el vómer, y el cierre de la fenestra basicraneal. Estas diferencias en el desarrollo del cráneo son importantes, ya que su presencia en todo el género Mabuya sugiere que se podría tratar de sinapomorfias para este clado.
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