Schizamniogenesis in the rusty bat, Pipistrellus rusticus

Abstract

Rusty bats are seasonally monoestrous, carrying a single foetus in each of the two uterine horns. Implantation is superficial with amniogenesis initiated very early during embryogenesis. Contrary to most other bat species where the amnion is formed by folding, it is formed by cavitation in the rusty bat.