非亲属合作分娩揭示抹香鲸社会复杂性

Alaa Maalouf1,2,3†, Joseph DelPreto1,2†, Maxime Lucas1,4,5,6†, Simone Poetto1,6,7†, Jacob Andreas1,2, Antonio Torralba1,2, Shane Gero1,8,9*, Giovanni Petri1,10*, Daniela Rus1,2*, David F. Gruber1,11* We quantitatively document a sperm whale birth event, revealing collective support behaviors across kinship lines. Using high-resolution drone footage, computer vision, and multiscale network analysis, we studied the interactions within a Caribbean sperm whale unit comprising two matrilines. Our results suggest that a female family member led birth assistance and that after delivery, all individuals oriented toward and helped lift the newborn, taking turns in a coordinated, cross-kin effort. Despite historically observed foraging segregation, kinship barriers dissolved as all unit members contributed. …