scholarly journals Digital atlases of the antennal lobe in two species of tobacco budworm moths, the orientalHelicoverpa assulta (male) and the AmericanHeliothis virescens (male and female)

2002 ◽  
Vol 446 (2) ◽  
pp. 123-134 ◽  
Author(s):  
Bente G. Berg ◽  
C. Giovanni Galizia ◽  
Robert Brandt ◽  
Hanna Mustaparta
Keyword(s):  
Antennal Lobe ◽  
Tobacco Budworm ◽  
Male And Female

scholarly journals Identification of the Differences in Olfactory System Between Male and Female Oriental Tobacco Budworm Helicoverpa assulta 

2020 ◽  
Author(s):  
Haichao Li ◽  
Weizheng Li ◽  
Changjian Miao ◽  
Gaoping Wang ◽  
Man Zhao ◽  
...  
Keyword(s):  
Olfactory System ◽  
Binding Proteins ◽  
Tobacco Budworm ◽  
Helicoverpa Assulta ◽  
Male And Female ◽  
Mate Search ◽  
Pheromone Identification ◽  
Survival And Reproduction ◽  
Odorant Binding ◽  
Whole Transcriptome

Abstract Background: The olfactory system of insects facilitates their search for host and mates, hence it plays an essential role for insect survival and reproduction. Insects recognize odor substances through olfactory neurons and olfactory genes. Previous studies showed that there are significant sex-specific differences in how insects identify odorant substances, especially sex pheromones. However, whether the sex-specific recognition of odorant substances is caused by differences in the expression of olfaction-related genes between males and females remains unclear. Results: In order to clarify this problem, the whole transcriptome sequence of the adult Helicoverpa assulta, an important agricultural pest of tobacco and other Solanaceae plants, was obtained using PacBio sequencing. RNA-seq analysis showed that there were 27 odorant binding proteins (OBPs), 24 chemosensory proteins (CSPs), 4 pheromone-binding proteins (PBPs), 68 odorant receptors (OR) and 2 sensory neuron membrane proteins (SNMPs) genes that were expressed in the antennae of male and female H. assulta. Females had significantly higher expression of GOBP1-like, OBP, OBP3, PBP3 and SNMP1 than males, while males had significantly higher expression of GOBP1, OBP7, OBP13, PBP2 and SNMP2. Conclusions: Our findings improve our understanding of olfactory genes in H. assulta, and can be used to further study pheromone identification, mate search, and sex differences in an insect’s ability to search for hosts. These results improve our understanding of mate search and host differentiation in H. assulta.

scholarly journals Z4-11Al mediates olfactory attraction and courtship in Drosophila melanogaster

2021 ◽  
Author(s):  
Felipe Borrero-Echeverry ◽  
Marit Solum ◽  
Federica Trona ◽  
Erika A. Wallin ◽  
Marie Bengtsson ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Antennal Lobe ◽  
Ecological Niches ◽  
Olfactory Communication ◽  
Social Signals ◽  
Active Components ◽  
Activation Patterns ◽  
Male And Female ◽  
Upwind Flight ◽  
Female Pheromone

Specific mate communication and recognition underlies reproduction and hence speciation. Mate communication evolves during adaptation to ecological niches and makes use of social signals and habitat cues. Our study provides new insights in Drosophila melanogaster premating olfactory communication, showing that female pheromone Z4-11Al and male pheromone cVA interact with food odour in a sex-specific manner. Furthermore, Z4-11Al, which mediates upwind flight attraction in both sexes, also elicits courtship in experienced males. Twin variants of the olfactory receptor Or69a are co-expressed in the same olfactory sensory neurons, and feed into the same glomerulus in the antennal lobe. Female pheromone Z4-11Al is perceived via Or69aB, while the food odorant (R)-linalool is a main ligand for the other variant, Or69aA. That Z4-11Al mediates courtship in experienced males, not (R)-linalool, is probably due to courtship learning. Behavioural discrimination is reflected by calcium imaging of the antennal lobe, showing distinct glomerular activation patterns by these two compounds. Male sex pheromone cVA is known to affect male and female courtship at close range, but does not elicit upwind flight attraction as a single compound, in to contrast to Z4-11Al. A blend of cVA and the food odour vinegar attracted females, while a blend of female pheromone Z4-11Al and vinegar attracted males instead. Sex-specific upwind flight attraction to blends of food volatiles and male and female pheromone, respectively, adds a new element to Drosophila olfactory premating communication and is an unambiguous paradigm for identifying the behaviourally active components, towards a more complete concept of food-pheromone odour objects.

scholarly journals Three-dimensional antennal lobe atlas of the oriental fruit moth, Cydia molesta (Busck) (Lepidoptera: Tortricidae): comparison of male and female glomerular organization

2009 ◽  
Vol 337 (3) ◽  
pp. 513-526 ◽  
Author(s):  
Nélia Varela ◽  
Louise Couton ◽  
César Gemeno ◽  
Jesús Avilla ◽  
Jean-Pierre Rospars ◽  
...  
Keyword(s):  
Antennal Lobe ◽  
Three Dimensional ◽  
Oriental Fruit Moth ◽  
Male And Female ◽  
Cydia Molesta
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