More highly female-biased sex ratio in the fig wasp,Blastophaga nipponica Grandi (Agaonidae) |
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Authors: | Motoaki Kinoshita Eiiti Kasuya Tetsukazu Yahara |
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Institution: | (1) Department of Biology, Faculty of Science, Kyushu University, 812-8581 Hakozaki, Fukuoka, Japan |
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Abstract: | The sex ratio of the pollinator fig wasp,Blastophaga nipponica Grandi (Agaonidae), was examined in an experiment manipulating the number of foundresses. The sex ratio ofB. nipponica was conditional on the number of foundresses and corresponded to the qualitative prediction of the local mate competition
(LMC) theory that the proportion of males increases as foundress number increases. However, the sex ratio ofB. nipponica was consistently more female-biased than predicted by extended LMC theories that incorporated effects of inbreeding, and
these deviations were statistically significant. Plausible factors that would make predictions more female-biased are discussed. |
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Keywords: | fig wasp local mate competition quantitative prediction sex ratio |
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