Researchers in Rwanda's Volcanoes National Park are using environmental DNA to monitor endangered mountain gorillas and golden monkeys without disturbing them [1].
This non-invasive approach allows scientists to track wildlife populations and prevent poaching while minimizing human interference with the animals' natural behavior [1, 2]. Traditional monitoring often requires direct contact or sightings, which can stress endangered species.
Environmental DNA, or eDNA, consists of genetic material left behind in the environment. By collecting samples from water, soil, or vegetation, researchers can detect the presence of specific species through the traces they leave behind [1, 3]. This method provides a critical tool for conservationists working in the dense forests of Rwanda, where sighting animals can be difficult.
Conservation efforts have shown significant progress in the region. The mountain gorilla population is estimated at 1,063 individuals [4]. This represents a 73% increase in the population since 1989 [4].
Scientists began integrating these eDNA techniques into their monitoring workflows in 2024 [2]. The technology enables a more comprehensive understanding of how gorillas and golden monkeys move through their habitat, and how their populations fluctuate over time.
By reducing the need for invasive tracking, Rwanda aims to create a more sustainable model for wildlife protection. The data gathered through eDNA helps officials identify high-risk areas for poaching and better allocate resources for park security [1, 2].
“Researchers are using environmental DNA to monitor endangered mountain gorillas and golden monkeys without disturbing them.”
The shift toward eDNA monitoring represents a transition from observational biology to data-driven conservation. By removing the need for physical proximity to the animals, researchers can gather more accurate population data without the risk of transmitting human diseases to gorillas or altering their natural behaviors, which is essential for the long-term survival of the species.
