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. 2020 May 18;11:475. doi: 10.3389/fphys.2020.00475

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Copyright © 2020 Li, Li, Wu, Fan and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effect of biogenic amine injections on oviposition by virgin females of Plutella xylostella. Number of eggs laid by females from days 1–5 (A), and total number of eggs laid by females in 5 days (B) after injection with 0.3 μL of 0.2 mol/L octopamine (n = 24), tyramine (n = 30), dopamine (n = 25), serotonin (n = 24), and Milli-Q water as a control (n = 27). Individual data is displayed with dots. (C) Dose-response study of the effects of biogenic amines on the number of eggs laid by virgin females within 24 h after injection (24 ≤ n ≤ 32). Different letters on the top of bars indicate significant differences between treatments on the same day (p < 0.05, ANOVA, Duncan). The dotted line in (C) indicates the number of eggs laid by virgin females injected with Milli-Q water.