| Title: | Effects of mating on host selection by female small white butterflies Pieris rapae (Lepidoptera: Pieridae) |
| Author(s): | Itoh Y; Okumura Y; Fujii T; Ishikawa Y; Omura H; |
| Address: | "Graduate School of Biosphere Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8528, Japan. Laboratory of Applied Entomology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan. Graduate School of Biosphere Science, Hiroshima University, Higashihiroshima, Hiroshima, 739-8528, Japan. homura@hiroshima-u.ac.jp" |
| Journal Title: | J Comp Physiol A Neuroethol Sens Neural Behav Physiol |
| DOI: | 10.1007/s00359-017-1237-x |
| ISSN/ISBN: | 1432-1351 (Electronic) 0340-7594 (Linking) |
| Abstract: | "Mating might significantly affect the host selection behaviors of phytophagous insects. Here, we investigated the post-mating changes in behavioral and antennal responses of Pieris rapae (Lepidoptera: Pieridae) females to host plant volatiles. In two-choice bioassays using artificial plant models, mated females visited the model scented with synthetic blends (15-, 9-, or 6-components) of cabbage plant volatiles more frequently than the unscented control, whereas virgin females did not exhibit this preference. Because single compounds and the 3-component blend did not induce preferential visiting, mated females apparently utilized complex odor blends as their host-finding cue. Moreover, 2- to 4-day-old mated females visited the models, scented and unscented, more frequently than did their virgin counterparts. Therefore, mating enhanced the host-finding behavior of young females and their responsiveness to plant volatiles. Gas chromatography-electroantennographic detector analysis revealed that eight of the 15 compounds in the cabbage plant volatiles elicited responses from female antennae. However, post-mating and age-dependent changes in antennal responses were not detected. Because female peripheral (antennal) sensitivity to volatiles remained practically unchanged after emergence, post-mating changes in host selection might be attributed to changes in the central nervous system" |
| Keywords: | "Aging/physiology Animals Arthropod Antennae/physiology *Behavior, Animal/physiology Brassica/chemistry Butterflies/*physiology *Choice Behavior/physiology Female Odorants *Olfactory Perception/physiology Sensation/physiology Antennal sensitivity Behaviora;" |
| Notes: | "MedlineItoh, Yuki Okumura, Yukiko Fujii, Takeshi Ishikawa, Yukio Omura, Hisashi eng Research Support, Non-U.S. Gov't Germany 2017/12/03 J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2018 Feb; 204(2):245-255. doi: 10.1007/s00359-017-1237-x. Epub 2017 Dec 1" |
