Migratory testis, spermatogenesis and reproductive cycle of the neotropical broad-eared bat Nyctinomops laticaudatus (Molossidae)

•The presence of migratory testis is only slightly reported in bats.•The presence of migratory testis in neotropical bats raises questions on how it relates to climatic variations.•A long period of testis recrudescence may be related to the testicular migration mechanism.