Researchers at Kyushu University have found that when azuki bean beetles infected with Wolbachia bacteria are exposed to a simulated climate change environment—characterized by elevated temperature and carbon dioxide—they tend to produce larger eggs to enhance the survivability of their offspring. Interestingly, these larger eggs gave rise exclusively to male larvae.



Summary

Kyushu University researchers discovered that azuki bean beetles infected with Wolbachia respond to simulated climate change (higher temperature & CO2) by laying larger eggs. This appears to be a survival strategy, aiming to improve offspring viability under stressful conditions. However, the larger eggs exclusively hatched into male larvae. This skewed sex ratio resulting from environmental pressures and Wolbachia influence could have significant long-term implications for azuki bean beetle populations facing climate change.

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