Samano-Barbosa Gihovani Ademir, Rojas-Martínez Ixchel, Porto-Ramírez Sergio Leonardo, Salgado-Mejia Fernando, Rodríguez-Tobón Ahiezer, Salame-Méndez Arturo, Arenas-Ríos Edith, Guevara-Chumacero Luis Manuel, López-Wilchis Ricardo
Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Ciudad de México, Mexico.
Laboratorio de Biología y Ecología de Mamíferos, Departamento de Biología, Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de México, Mexico.
J Morphol. 2025 Jul;286(7):e70066. doi: 10.1002/jmor.70066.
Recent studies have emphasized the ecological significance of bats as insect regulators. This recognition has prompted an increased scientific interest in Mormoops megalophylla, a notable neotropical insectivorous bat species. The extant literature on its biology remains limited and substantial knowledge gaps persist, particularly regarding its reproductive cycle. This study sought to examine morphological and histological variations in the reproductive organs of male and female M. megalophylla over the annual cycle to elucidate the stages of its reproductive process. Over the course of the year, five sexually mature individuals of each sex were sampled monthly, culminating in a total of 120 specimens, to document variations in external sexual characters, the testes, epididymides, uterus, and ovaries; all sampled individuals underwent morphological, morphometric, and histological analyses. The findings indicate that M. megalophylla has migratory testes with seasonal spermatogenesis occurring from October to December, a bicornuate uterus, and a single folliculogenic period that is synchronized with spermatogenesis. This suggests a monoestrous, seasonal, and synchronous reproductive pattern. At the population level, copulation occurs between November and December, gestation occurs between December and May, and parturition occurs between late May and early June. The lactation period extended from June to September.
最近的研究强调了蝙蝠作为昆虫调节者的生态意义。这种认识促使科学界对大耳蝠（Mormoops megalophylla）产生了更大的兴趣，大耳蝠是一种著名的新热带食虫蝙蝠物种。关于其生物学的现有文献仍然有限，存在大量知识空白，尤其是关于其繁殖周期的知识。本研究旨在研究雄性和雌性大耳蝠生殖器官在一年周期内的形态和组织学变化，以阐明其生殖过程的各个阶段。在一年的时间里，每月对每种性别的5个性成熟个体进行采样，共采集了120个标本，以记录外部性特征、睾丸、附睾、子宫和卵巢的变化；所有采样个体都接受了形态学、形态计量学和组织学分析。研究结果表明，大耳蝠的睾丸具有迁移性，季节性精子发生从10月持续到12月，子宫为双角子宫，并且有一个与精子发生同步的单一卵泡生成期。这表明其具有单发情、季节性和同步的生殖模式。在种群水平上，交配发生在11月至12月之间，妊娠期在12月至5月之间，分娩在5月下旬至6月初之间。哺乳期从6月持续到9月。
