Sex ratio biases in termites provide evidence for kin selection

Kazuya Kobayashi, Eisuke Hasegawa, Yuuka Yamamoto, Kazutaka Kawatsu, Edward L. Vargo, Jin Yoshimura, Kenji Matsuura

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Inclusive fitness theory, also known as kin selection theory, is the most general expansion of Darwin's natural selection theory. It is supported by female-biased investment by workers in the social Hymenoptera where relatedness to sisters is higher than to brothers because of haplodiploidy. However, a strong test of the theory has proven difficult in diploid social insects because they lack such relatedness asymmetry. Here we show that kin selection can result in sex ratio bias in eusocial diploids. Our model predicts that allocation will be biased towards the sex that contributes more of its genes to the next generation when sex-asymmetric inbreeding occurs. The prediction matches well with the empirical sex allocation of Reticulitermes termites where the colony king can be replaced by a queen's son. Our findings open broad new avenues to test inclusive fitness theory beyond the well-studied eusocial Hymenoptera.

Original languageEnglish
Article number2048
JournalNature communications
Volume4
DOIs
Publication statusPublished - 2013 Jun 28
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Sex ratio biases in termites provide evidence for kin selection'. Together they form a unique fingerprint.

  • Cite this

    Kobayashi, K., Hasegawa, E., Yamamoto, Y., Kawatsu, K., Vargo, E. L., Yoshimura, J., & Matsuura, K. (2013). Sex ratio biases in termites provide evidence for kin selection. Nature communications, 4, [2048]. https://doi.org/10.1038/ncomms3048