Protecting their offspring means keeping them cool beneath the soil. (via ConversationUS)
Beetles in the greenhousein many parts of the world. This means that insects and other species have to handle not just warmer temperatures, but greater changes in temperature day to day.
We gave the beetles fresh cow dung every other day for 10 days and allowed them to make brood balls. Then we carefully dug through the buckets and recorded the number, depth and size of brood balls in each bucket.We found that beetle mothers in greenhouse environments created more brood balls overall, that these brood balls were smaller, and that these femalesthan beetle mothers in control buckets.
Our findings also hint at a possible trade-off between burial depth and brood ball size. Beetle mothers that dug deeper protected their offspring from temperature changes but provided less dung in their brood balls. This meant less nutrition for developing offspring.
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