Sex ratio biases in termites provide evidence for kin selection
Sex ratio biases in termites provide evidence for kin selection
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DOI：
10.1038/ncomms3048
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发表时间：
2013-06-01
影响因子：
16.6
通讯作者：
Matsuura, Kenji
中科院分区：
文献类型：
--
作者：
Kobayashi, Kazuya;Hasegawa, Eisuke;Matsuura, Kenji
包含适应度理论，又称亲缘选择理论，是对达尔文自然选择理论最普遍的扩展。这是支持女性偏见的投资，工人在社会Hyattera的关系，姐妹篇是高于兄弟，因为单倍性。然而，在二倍体社会性昆虫中对该理论进行强有力的检验已经被证明是困难的，因为它们缺乏这种亲缘关系的不对称性。在这里，我们表明，亲属选择可以导致真社会性二倍体的性别比例偏差。我们的模型预测，分配将偏向于性别，有助于更多的基因下一代时，发生性别不对称近亲繁殖。该预测与散白蚁的经验性性别分配相吻合，其中殖民地王可以被女王的儿子取代。我们的研究结果开辟了广阔的新途径，以测试包容性的健身理论超越了研究良好的eusocialHyattera。
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.