Study Finds Invasive Frogs Share Ability to Colonize Colder Climates Despite Different Introduction Histories
Researchers analyzed invasion patterns of five closely related invasive frog species and found they share a common ability to expand into colder environments, despite arriving in new regions through different pathways and times. The study used occurrence data and climate modeling to track how these frogs shifted their climatic niches from their native ranges. The findings suggest that identifying shared traits among related invasive species could help develop targeted prevention strategies for future biological invasions.
A new study published on bioRxiv examined five invasive Eleutherodactylus frog species to understand patterns in biological invasion that could inform prevention efforts. Researchers synthesized public occurrence data to reconstruct the introduction histories of E. coqui, E. planirostris, E. johnstonei, E. antillensis, and E. martinicensis, then evaluated whether these species shifted their climatic niches between native and non-native ranges. While the frogs showed distinct temporal and geographic introduction histories, they demonstrated a consistent pattern of colonizing broader climatic niches, particularly into colder environmental conditions than their native ranges. Using current and future climate projections, the team found that suitable habitats for most non-native populations are likely to expand under future climate scenarios, though this expansion is more limited under high greenhouse gas emission scenarios. The researchers conclude that shared traits among closely related invasive species—such as cold-climate tolerance—could provide valuable clues for predicting invasion risk and developing targeted mitigation strategies.
What's missing
The study does not specify which non-native regions these frogs have invaded, the mechanisms underlying their ability to tolerate colder climates, or the ecological impacts they have had in their introduced ranges. Additionally, the specific climate models and greenhouse gas emission scenarios used are not detailed in the abstract.
What different sources said
- bioRxivCenter
Disparate introduction histories but similar climatic distribution patterns among congeneric invasive anurans
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