Evolution's role reversal: How seahorse dads evolved a “placenta”
Abstract
Scientists discovered a special type of stem cell that forms the male seahorse's brood pouch, and found that similar cells in female mammalian placental tissue perform comparable reproductive functions, revealing a convergent evolutionary pathway for pregnancy. Future comparative studies of male pregnancy in seahorses and paternal brooding in sea spiders are demanded to provide crucial insights into the evolutionary convergence of this reproductive innovation between these two distantly related lineages.
Fields of Study & Subjects
Aquatic life and conservation
Developmental Biology and Gene Regulation
Animal Behavior and Reproduction
Publication details
- Journal / source
- Journal of Systematics and Evolution
- Volume
- 64
- Issue
- 2
- Pages
- 179–180
- Publication date
- 28 January 2026
- Language
- EN