Sato Airi, Tanaka Kentaro M, Yew Joanne Y, Takahashi Aya
Department of Biological Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji 192-0397, Japan.
Pacific Biosciences Research Center, University of Hawai'i at Mānoa, 1993 East West Road, Honolulu, HI 96822, USA.
R Soc Open Sci. 2021 Jan 20;8(1):201601. doi: 10.1098/rsos.201601. eCollection 2021 Jan.
While the majority of species lays eggs onto fermented fruits, females of pierce the skin and lay eggs into ripening fruits using their serrated ovipositors. The changes of oviposition site preference must have accompanied this niche exploitation. In this study, we established an oviposition assay to investigate the effects of commensal microbes deposited by conspecific and heterospecific individuals and showed that the presence of microbes on the oviposition substrate enhances egg laying of and , but discourages that of . This result suggests that a drastic change has taken place in the lineage leading to in how females respond to chemical cues produced by microbes. We also found that hardness of the substrate, resembling that of either ripening or damaged and fermenting fruits, affects the response to microbial growth, indicating that mechanosensory stimuli interact with chemosensory-guided decisions to select or avoid oviposition sites.
虽然大多数物种会将卵产在发酵的果实上，但[物种名称未提及]的雌性会用它们锯齿状的产卵器刺穿果皮，将卵产入成熟的果实中。产卵地点偏好的变化一定伴随着这种生态位的利用。在本研究中，我们建立了一种产卵测定法，以研究同种和异种个体沉积的共生微生物的影响，并表明产卵基质上微生物的存在会促进[物种名称未提及]和[物种名称未提及]的产卵，但会抑制[物种名称未提及]的产卵。这一结果表明，在导致[物种名称未提及]的谱系中，雌性对微生物产生的化学信号的反应方式发生了巨大变化。我们还发现，类似于成熟或受损及发酵果实的基质硬度会影响对微生物生长的反应，这表明机械感觉刺激与化学感觉引导的选择或避免产卵地点的决策相互作用。
