Host-plant choices determined by reproductive interference between closely related butterflies

Naota Ohsaki, Masaaki Ohata, Yoshibumi Sato & Mark D. Rausher
A number of empirical studies have concluded that reproductive interference, RI, contributes to parapatric species distributions or sexual exclusion. However, the possibility that divergent host-plant use in phytophagous insects is due to sexual exclusion has seldom been considered. Here we present evidence that RI is responsible for different host-plant use by two Pierid butterfly species, Pieris napi and P. melete . When a novel host species was introduced about 50 years ago, two Pierid butterfly...

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  • Kyoto University
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