Tracking Batrachochytrium dendrobatidis Infection Across the Globe

Area of Science:

• Amphibian disease ecology
• Pathogen distribution studies
• Conservation biology

Background:

• Batrachochytrium dendrobatidis (Bd) is a devastating pathogen causing global amphibian declines.
• Increasing infection records necessitate better data synthesis for understanding Bd's scope.
• Challenges exist in tracking Bd's geographic, temporal, and host species prevalence.

Purpose of the Study:

• To systematically review and compile global Bd infection records.
• To analyze the distribution and prevalence of Bd across amphibian taxa and countries.
• To identify areas of high Bd prevalence and potential refuges for management prioritization.

Main Methods:

• Conducted a systematic literature review to gather Bd infection data.
• Compiled a comprehensive database of Bd infection records.
• Analyzed data for geographic distribution, host species, and temporal trends.

Main Results:

• Bd infection data compiled from 71 amphibian families across 119 countries.
• Bd demonstrates wide adaptability, infecting over 50% of tested species, with >1000 confirmed hosts in 86 countries.
• Identified geographic hotspots of Bd prevalence and regions suggesting potential Bd refuges.

Conclusions:

• Bd is a widespread and adaptable pathogen with significant global impact on amphibian populations.
• Mapping infection data reveals critical areas for Bd management and highlights potential refuges.
• Understanding temporal and spatial patterns of Bd is crucial for effective conservation strategies.