Diseases of Aquatic Organisms

Amphibian Diseases

Amphibians are the most threatened groups of animals on the planet. Diseases (e.g., chytrid fungi, ranavirus, severe perkinsea infections (SPI)) are negatively impacting these species.

Fatal Frog Fungus

Fatal Frog Fungus

With today's episode we will shed some light on what we know and what we can expect for the future of amphibians. Join us as we interview USGS ecologists Mike Adams and Tara Chestnut, as well as USGS hydrologist Chauncey Anderson.

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Advancing ARMI: In search of Chytrid Fungus

Advancing ARMI: In search of Chytrid Fungus

In this episode, we follow a group of students from the Jane Goodall Environmental Middle School  to Pintail Marsh at the Ankeny National Wildlife Refuge where they join USGS ecologist Tara Chestnut to investigate and sample for chytrid fungus.

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Deadly Frog Disease

Deadly Frog Disease

A team led by the USGS National Wildlife Health Center in Madison has found severe Perkinsea infections, or SPI, killed a sizable number of frogs in 43 states over a 16-year period.

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Chytrid fungus (Batrachochytrium dendrobatidis, Bd) was identified 15 years ago as one of the primary causes of death for many amphibians. However, the ecology and epidemiology of Bd is still being investigated. A second type of chytrid fungus (Batrachochytrium salamandrivorans, Bsal) is emerging in Europe. While Bsal primarily affects salamanders, frogs can also become infected and spread this disease. SPI has been associated with large-scale frog die-offs in at least 10 states.

USGS formed the Amphibian Research and Monitoring Initiative (ARMI) to lead a cooperative national effort that is monitoring amphibians and researching potential causes of decline, including disease.

USGS is proactively responding to the threat of Bsal:

Contacts

M. Camille Hopkins, DVM, MS, PhD

Wildlife Disease Specialist
Ecosystems
Phone: 703-648-4019