Saiga antelope experienced catastrophic mass die-offs in 2015, losing over 200,000 animals (60% of the population) in weeks. Understanding and preventing future die-offs while recovering populations is a conservation priority.
The 2015 saiga die-off represents one of the most devastating mass mortality events of a mammal in recorded history. The welfare of 200,000 individual animals dying from hemorrhagic septicemia in their own tissues within weeks is almost incomprehensible in scale. The unusual feature of this event - that climate conditions converted a normally harmless commensal bacterium into a deadly pathogen - suggests that climate change may trigger similar catastrophic events in other species. Individual saiga during die-off events experienced rapid systemic hemorrhaging before death. Conservation responses include population monitoring systems that can detect mortality events early, enabling potential intervention, and genetic banking to preserve diversity against catastrophic losses.