Distinct protocerebral neuropils associated with attractive and aversive female-produced odorants in the male moth brain

eLife

Christoffer Nerland Berge¹  Bente Gunnveig Berg¹  Jonas Hansen Kymre¹  Elena Ian¹  Xi Chu¹  XinCheng Zhao²  XiaoLan Liu³  GuiRong Wang⁴ 

[1] Chemosensory lab, Department of Psychology, Norwegian University of Science and Technology, Trondheim, Norway;Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, China;Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, China;State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China;State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China;

关键词: Helicoverpa armigera;    pheromone;    interspecific signal;    macroglomerular complex;    electrophysiology;    neuronal morphology;    Other;   

DOI  :  10.7554/eLife.65683

来源: eLife Sciences Publications, Ltd

【 摘 要 】

The pheromone system of heliothine moths is an optimal model for studying principles underlying higher-order olfactory processing. In Helicoverpa armigera, three male-specific glomeruli receive input about three female-produced signals, the primary pheromone component, serving as an attractant, and two minor constituents, serving a dual function, that is, attraction versus inhibition of attraction. From the antennal-lobe glomeruli, the information is conveyed to higher olfactory centers, including the lateral protocerebrum, via three main paths – of which the medial tract is the most prominent. In this study, we traced physiologically identified medial-tract projection neurons from each of the three male-specific glomeruli with the aim of mapping their terminal branches in the lateral protocerebrum. Our data suggest that the neurons’ widespread projections are organized according to behavioral significance, including a spatial separation of signals representing attraction versus inhibition – however, with a unique capacity of switching behavioral consequence based on the amount of the minor components.

【 授权许可】

CC BY