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Young Ants Emit 'Kill Me' Scent for Altruism

1/8/2026

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Summary

Story summary

Researchers report that sick young ants of the invasive garden ant Lasius neglectus emit a 'kill me' scent to alert workers.
This odor helps workers identify and disinfect infected pupae, limiting spread.
The signal appears only when adult workers are present, suggesting active altruism.
Experts caution that labeling it altruism may be misleading, even as the findings in Nature Communications enhance understanding of social immunity.

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Story summary

Researchers report that sick young ants of the invasive garden ant Lasius neglectus emit a 'kill me' scent to alert workers.
This odor helps workers identify and disinfect infected pupae, limiting spread.
The signal appears only when adult workers are present, suggesting active altruism.
Experts caution that labeling it altruism may be misleading, even as the findings in Nature Communications enhance understanding of social immunity.