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Presento una revisión de los trabajos que desde mi laboratorio se han venido realizando sobre la biología reproductiva y la placentotrofía en varias poblaciones de lagartijas vivíparas placentotróficas del género Mabuya. En este grupo la ovogénesis produce huevos microlecitos y en relación a ello se encuentra la mayor complejidad placentaria conocida hasta ahora entre Reptilia que converge en muchos aspectos morfológicos y fisiológicos con la que se conoce en mamíferos euterios; sin embargo, también muestra características exclusivas muy interesantes. Esta complejidad placentaria permite una masiva transferencia desde el oviducto materno de todos los nutrientes necesarios para el desarrollo de los embriones durante los 9 a 10 meses que dura su gestación. En esta revisión muestro la manera como una pregunta de investigación inicialmente sencilla ha permitido ahondar en la biología de este particular clado y cómo las nuevas herramientas que están ahora disponibles a las ciencias biológicas nos permitirán responder preguntas fundamentales en un futuro próximo. © 2014. Acad. Colomb. Cienc. Ex. Fis. Nat. Todos los derechos reservados.References
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