Skeletogenesis and sequence heterochrony in rodent evolution, with particular emphasis on the African striped mouse, <i>Rhabdomys pumilio</i> (Mammalia)

dc.creatorWilson, Laura A. B.
dc.creatorSchradin, Carsten
dc.creatorMitgutsch, Christian
dc.creatorGalliari, Fernando Carlos
dc.creatorMess, Andrea
dc.creatorSánchez Villagra, Marcelo R.
dc.date2010-03-09
dc.date2021-10-25T17:36:14Z
dc.date.accessioned2023-07-15T03:50:48Z
dc.date.available2023-07-15T03:50:48Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/127220
dc.identifierhttps://link.springer.com/article/10.1007%2Fs13127-010-0020-4
dc.identifierissn:1439-6092
dc.identifierissn:1618-1077
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7467278
dc.descriptionData documenting skeletal development in rodents, the most species-rich ‘order’ of mammals, are at present restricted to a few model species, a shortcoming that hinders exploration of the morphological and ecological diversification of the group. In this study we provide the most comprehensive sampling of rodent ossification sequences to date, with the aim of exploring whether heterochrony is ubiquitous in rodent evolution at the onset of skeletal formation. The onset of ossification in 17 cranial elements and 24 postcranial elements was examined for eight muroid and caviomorph rodent species. New data are provided for two non-model species. For one of these, the African striped mouse, <i>Rhabdomys pumilio</i>, sampling was extended by studying 53 autopodial elements and examining intraspecific variation. The Parsimov method of studying sequence heterochrony was used to explore the role that changes in developmental timing play in early skeletal formation. Few heterochronies were found to diagnose the muroid and caviomorph clades, suggesting conserved patterning in skeletal development. Mechanisms leading to the generation of the wide range of morphological diversity encapsulated within Rodentia may be restricted to later periods in development than those studied in this work. Documentation of skeletogenesis in <i>Rhabdomys</i> indicates that intraspecifc variation in ossification sequence pattern is present, though not extensive. Our study suggests that sequence heterochrony is neither pivotal nor prevalent during early skeletal formation in rodents.
dc.descriptionFacultad de Ciencias Naturales y Museo
dc.formatapplication/pdf
dc.format243-258
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectCiencias Naturales
dc.subjectBiología
dc.subjectRodent
dc.subjectHeterochrony
dc.subjectRhabdomys
dc.subjectSkeletogenesis
dc.subjectDevelopment
dc.subjectIntraspecific variation
dc.titleSkeletogenesis and sequence heterochrony in rodent evolution, with particular emphasis on the African striped mouse, <i>Rhabdomys pumilio</i> (Mammalia)
dc.typeArticulo
dc.typeArticulo


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