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A recent study conducted by researchers at the University of British Columbia highlights the potential dangers that rising temperatures due to climate change could pose to cold-blooded species, such as corals, insects, and fish. The study raises critical questions about the broader implications of global warming for ecosystems and biodiversity, as well as potential effects on human populations.
Cold-blooded in a warming world
Drs. Kayla King and Jingdi (Judy) Li conducted a comprehensive synthesis of 60 experimental studies focusing on cold-blooded animals afflicted by bacterial and fungal infections. Their research emphasizes that these organisms are particularly vulnerable to temperature fluctuations, as they are ectothermic and directly influenced by their surroundings. The analysis examined 50 different species, including various land insects, fish, mollusks, and corals, which represent some of the planet’s most diverse and at-risk ecosystems.
Utilizing statistical modeling techniques, the researchers discovered that cold-blooded animals with bacterial infections face an increased risk of mortality when subjected to elevated temperature conditions compared to their usual environments.
Fungal sweet spots
The study also unveiled that the impact of warming on animals infected with fungal pathogens is particularly pronounced within a certain temperature range. Infected individuals appear to experience higher mortality rates as temperatures rise, specifically not above the fungi’s thermal optimum range where they thrive. Interestingly, when temperatures exceed the survival threshold for these fungi, the death rates among infected animals decrease.
What does this mean?
According to Dr. Li, “These findings indicate that climate warming may significantly heighten risks for cold-blooded animals, which play a crucial role in ecosystems.” She emphasized the necessity of further research to explore how rising temperatures might affect warm-blooded species, including humans. Dr. King highlighted that these results provide valuable insight that could assist in predicting the risks faced by animal populations in a future characterized by increased temperatures and disease prevalence.
Source
www.sciencedaily.com