Crisis Among Hermann's Tortoises on Golem Grad Island

On Golem Grad, an uninhabited island in Lake Prespa, North Macedonia, a significant ecological crisis is unfolding among the Hermann's tortoise population. Research led by Dragan Arsovski, an ecologist at the Macedonian Ecological Society, reveals that the island's tortoise population is facing imminent extinction due to an overwhelming imbalance in the sex ratio and aggressive mating behaviors.

New York Times

Dr. Arsovski's studies, initiated in 2008, have documented a staggering ratio of 19 male tortoises for every female. This disproportionate number has led to aggressive mating behaviors, where males pursue females relentlessly. The research, published in the journal *Ecology Letters*, indicates that this aggressive courtship is detrimental to the females, many of whom suffer from injuries and stress. The study highlights that three-quarters of the females exhibit genital injuries, resulting from the males' mounting and biting behaviors.

New York Times

The relentless pursuit by males has not only affected the health of female tortoises but has also contributed to their premature deaths. Some females have been observed walking off the island's sheer cliffs, a behavior that may stem from stress or injury. Dr. Arsovski noted that the once-thriving population has become increasingly unhealthy, with females being undersized and dying at a young age. The situation has escalated to a point where the aggressive mating practices are driving the population towards extinction.

New York Times

While the research presents a clear picture of the crisis, some critics argue that the focus on male behavior may overlook other environmental factors contributing to the decline. There is a call for further investigation into habitat conditions and potential human impacts that may exacerbate the situation.

New York Times

Dr. Arsovski emphasized the urgency of addressing the tortoise population's plight, stating, “She’s literally buried by males.” This statement underscores the severity of the mating dynamics at play. The Macedonian Ecological Society is advocating for conservation measures to restore balance to the tortoise population and prevent extinction.

New York Times

In light of these findings, researchers and conservationists are likely to push for immediate action to mitigate the crisis. This may include habitat management strategies aimed at improving the health of the tortoise population and ensuring a more balanced sex ratio.

New York Times

• “She’s literally buried by males,” — Dragan Arsovski, Ecologist, Macedonian Ecological Society

New York Times

• “it was quite a dense and seemingly prosperous population,” — Dragan Arsovski, reflecting on past conditions of the tortoise population.

New York Times

The situation on Golem Grad serves as a critical reminder of the delicate balance within ecosystems and the potential consequences of human impact on wildlife.

New York Times