Possibility of Undeveloped Egg Absorption during Embryogenesis: A Unique Phenomenon Observed in the Ovoviviparous Mayfly Cloeon dipterum

• Published in: Zoological science Vol. 38; no. 1; p. 20
• Main Authors: Yano, Koki, Tojo, Koji
• Format: Journal Article
• Language: English
• Published: Japan 01.02.2021
• Subjects: Animals; Body Size; Embryo, Nonmammalian; Embryonic Development; Ephemeroptera - embryology; Ephemeroptera - physiology; Female; Male; Oviducts - physiology; Ovoviviparity; Ovum; ovoviviparity; hand pairing; parity modes; parthenogenesis; fecundity

Oviparous, ovoviviparous and viviparous reproduction are interesting subjects for understanding animals' evolutionary pathways and adaptation to their life history and habitat conditions. In this study, we examined the reproductive mode of the ovoviviparous mayfly , particularly comparing embry...