Comparative Study of Prenatal Development Between Myotis albescens (Chiroptera: Vespertilionidae) and Eumops patagonicus (Chiroptera: Molossidae): The Chorionic Vesicle and Extraembryonic Membranes Considerations
| Autor: | Blanca Beatriz Álvarez, Florencia Evelyn Rodríguez, María Teresa Sandoval, Daniel Marcelo Lombardo |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Histology VESPERTILIONIDAE Placenta Extraembryonic Membranes Embryonic Development 010603 evolutionary biology 01 natural sciences Eumops patagonicus purl.org/becyt/ford/1 [https] 03 medical and health sciences Pregnancy Patagium Chiroptera medicine EMBRYOGENESIS Animals CHORIONIC VESICLE Yolk sac purl.org/becyt/ford/1.6 [https] CHIROPTERA Ecology Evolution Behavior and Systematics Carollia perspicillata MOLOSSIDAE Myotis albescens biology Embryogenesis Embryonic Stage Anatomy SOUTH AMERICAN BAT biology.organism_classification Prenatal development 030104 developmental biology medicine.anatomical_structure Female Biotechnology |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET Anatomical Record, 2018, vol. 301, no. 9, p. 1527-1543. Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) Universidad Nacional del Nordeste instacron:UNNE |
| ISSN: | 1932-8494 |
| Popis: | We presented a comparative study of two species of South American bats, Myotis albescens and Eumops patagonicus, about prenatal development. This study was carried out using 60 specimens, which were measured and photographed, and the embryonic stage was assigned by the staging system for Carollia perspicillata. We observed that the chorionic vesicle showed similarities in the disposition of the extraembryonic membranes, but they differed in characteristics of their yolk sac; in E. patagonicus, it was more glandular than M. albescens. M. albescens presented a well-developed discoid placenta with a caudal antimesometrial position, but E. patagonicus presented a diffuse placenta, which persists until the end of gestation and a discoid placenta in the uterus–tubal junction. In the embryogenesis, early stages, middle stages, and late stages were defined. In the early stage, the embryonic morphology is similar in the two species. The middle stage is characterized by the muzzle and pinna formation, fore and hind limb regionalization, and the formation of the patagium primordium. In the late stage, the overall growth of the embryo occurs. Its fore and hind limbs, patagium, and the typical craniofacial features are configured. We conclude that in early stages of development, the embryonic morphology of M. albescens and E. patagonicus is similar, while in late stages differences are evident; mainly the craniofacial structures and uropatagium configuration characteristics that allow their classification at the family level. Moreover, differences in time of fusion of maxillary and mandibular process were registered. This could be related to the morphology of the muzzle of each species. Fil: Rodriguez, Florencia Evelyn. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Departamento de Bioquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina Fil: Sandoval, María Teresa. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de Biología. Laboratorio de Herpetología; Argentina Fil: Alvarez de Avanza, Blanca Beatriz. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de Biología. Laboratorio de Herpetología; Argentina Fil: Lombardo, Daniel Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Instituto de Investigacion y Tecnología en Reproducción Animal; Argentina |
| Databáze: | OpenAIRE |
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