Yosemite toad killer may be hiding in their own homes

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Published: 2026-10-01T21:46:42.474Z • Permanent link

UCLA biologists have made a groundbreaking discovery that sheds new light on the mysterious killer targeting Yosemite toads. Led by renowned experts Dr. Melissa Miller and Dr. Nathan Hotz, the team has found that the Batrachochytrium dendrobatidis (Bd) fungus, responsible for decimating amphibian populations worldwide, has been hiding in plain sight - within the burrows of its own victims. The fungus, which has ravaged ecosystems in Australia, South America, and North America, has long been thought to thrive in aquatic environments, but Miller and Hotz's research reveals a shocking truth: the fungus can survive and even reproduce in the dry, terrestrial habitats of its toad hosts.

The discovery was made possible by a collaborative effort between UCLA and the University of California, Berkeley, involving a team of scientists from various disciplines, including ecology, microbiology, and conservation biology. The researchers employed cutting-edge techniques, including DNA sequencing and microscopy, to analyze fungal samples collected from Yosemite National Park. Their findings, published in the journal Nature, provide conclusive evidence that the fungus can survive and even spread through terrestrial routes, challenging our previous understanding of its ecology and behavior.

The significance of this breakthrough cannot be overstated, as it has far-reaching implications for our understanding of the complex relationships between fungi, animals, and ecosystems. The research has important implications for conservation efforts, as it highlights the need for a more nuanced approach to managing amphibian populations and mitigating the impact of the fungus. The study's authors, Miller and Hotz, have emphasized the importance of continued research into the ecology and behavior of Bd, as it will inform strategies for controlling its spread and protecting vulnerable ecosystems.

The discovery of Bd's ability to thrive in terrestrial habitats has significant implications for companies involved in the development of amphibian-friendly products and services. For example, companies like Dupont and 3M, which produce products used in amphibian conservation efforts, may need to reassess their formulations and strategies to account for the fungus's new capabilities. Research institutions, such as the University of California, Berkeley, and the Woods Hole Oceanographic Institution, may also need to update their protocols for studying Bd, taking into account its newfound adaptability.

Furthermore, the study's findings have important implications for policy environments, as they highlight the need for a more integrated approach to managing ecosystems and mitigating the impact of invasive species. Governments and regulatory agencies, such as the U.S. Fish and Wildlife Service, may need to update their guidelines and regulations to account for the fungus's new capabilities, ensuring that conservation efforts are effective and targeted. The study's authors have emphasized the importance of continued research into the ecology and behavior of Bd, as it will inform strategies for controlling its spread and protecting vulnerable ecosystems.

The discovery of Bd's ability to thrive in terrestrial habitats is not an isolated event, but rather part of a larger pattern of ecological disruption and adaptation. The rise of invasive species, such as the zebra mussel and the emerald ash borer, has highlighted the need for a more nuanced approach to managing ecosystems. Similarly, the emergence of climate change as a major driver of ecological disruption has underscored the importance of understanding the complex relationships between species, habitats, and environmental factors.