scholarly journals Female-Released Sex Pheromones Mediating Courtship Behavior inLysiphlebus testaceipesMales

2013 ◽  
Vol 13 (53) ◽  
pp. 1-14 ◽  
Author(s):  
Mirella Lo Pinto ◽  
Benedetta Cangelosi ◽  
Stefano Colazza
Keyword(s):  
Sex Pheromones ◽  
Courtship Behavior

scholarly journals Computational Interaction Analysis of Sirex noctilio Odorant-Binding Protein (SnocOBP7) Combined with Female Sex Pheromones and Symbiotic Fungal Volatiles

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2461
Author(s):  
Yi-Ni Li ◽  
En-Hua Hao ◽  
Han Li ◽  
Xiao-Hui Yuan ◽  
Peng-Fei Lu ◽  
...  
Keyword(s):  
Sex Pheromones ◽  
Interaction Analysis ◽  
Courtship Behavior ◽  
Computational Simulation ◽  
Acid Sites ◽  
Mode Analysis ◽  
Sirex Noctilio ◽  
Fungal Volatiles ◽  
Female Sex ◽  
Computational Alanine Scanning

Sirex noctilio, a major forestry quarantine pest, has spread rapidly and caused serious harm. However, existing methods still need to be improved because its olfactory interaction mechanisms are poorly understood. In order to study the role of male-specific protein SnocOBP7 in the protein–ligand interactions, we selected it as the object of computational simulation and analysis. By docking it with 11 ligands and evaluating free binding energy decomposition, the three best binding ligands were found to be female sex pheromones ((Z)-7-heptacosene and (Z)-7-nonacosene) and symbiotic fungal volatiles ((−)-globulol). Binding mode analysis and computational alanine scanning suggested that five residues play key roles in the binding of each female sex pheromone to SnocOBP7, whereas two residues play key roles in (−)-globulol binding. Phe108 and Leu36 may be the crucial sites via which SnocOBP7 binds female sex pheromones, whereas Met40 may regulate the courtship behavior of males, and Leu61 may be related to mating and host finding. Our studies predicted the function of SnocOBP7 and found that the interaction between SnocOBP7 and pheromone is a complex process, and we successfully predicted its binding key amino-acid sites, providing a basis for the development of new prevention and control methods relying on female sex pheromones and symbiotic fungi.

scholarly journals The production of excretory-secretory molecules from Heligmosomoides polygyrus bakeri fourth stage larvae varies between mixed and single sex cultures

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Marta Maruszewska-Cheruiyot ◽  
Ludmiła Szewczak ◽  
Katarzyna Krawczak-Wójcik ◽  
Magdalena Głaczyńska ◽  
Katarzyna Donskow-Łysoniewska
Keyword(s):  
Sex Pheromones ◽  
Pheromone Communication ◽  
Larval Culture ◽  
Heligmosomoides Polygyrus ◽  
Single Sex ◽  
Opposite Sex ◽  
Potential Vaccine ◽  
Immunomodulatory Properties ◽  
Therapeutic Compounds ◽  
Immunomodulatory Potential

Abstract Background Excretory-secretory (ES) products are crucial in maintaining helminths in the host. Consequently, the proteins of ES are potential vaccine molecules and potential therapeutic agents for autoimmune diseases. Heligmosomoides polygyrus bakeri, a gastrointestinal parasite of mice, is a model of hookworm infection in humans. ES produced by both sexes of H. polygyrus bakeri L4 stage cultured separately shows different immunomodulatory properties than ES obtained when both sexes are cultured together. Accordingly, the objective of this study was to identify and compare the excretory-secretory molecules from single-sex and mixed cultures. Methods The composition of ES of male and female L4 stage nematodes in the presence (cultured together) or absence (cultured alone) of the opposite sex was examined. Proteins were identified using mass spectrometry. The functions of identified proteins were explored with Blast2GO. Results A total of 258 proteins derived from mixed larval culture in the presence of sex pheromones were identified, 160 proteins from pure female cultures and 172 from pure male cultures. Exposure of nematodes to the sex pheromones results in abundant production of proteins with immunomodulatory properties such as Val proteins, acetylcholinesterases, TGF-β mimic 9 and HpARI. Proteins found only in ES from mixed larval cultures were TGF-β mimics 6 and 7 as well as galectin. Conclusions The presence of the opposite sex strongly influences the composition of ES products, probably by chemical (pheromone) communication between individuals. However, examination of the composition of ES from various conditions gives an opportunity for searching for new potentially therapeutic compounds and anthelminthics as well as components of vaccines. Manipulation of the nematode environment might be important for the studies on the immunomodulatory potential of nematodes.

Social and environmental cues drive the intra-population variation in courtship behavior of a neotropical lekking bird

2021 ◽  
Author(s):  
Filipe Aramuni ◽  
Mariane Bosholn ◽  
Mariana Tolentino ◽  
Aline P. Rampini ◽  
Sandra M. Hernández-Rangel ◽  
...  
Keyword(s):  
Courtship Behavior ◽  
Population Variation ◽  
Environmental Cues

scholarly journals Pheromone binding proteins enhance the sensitivity of olfactory receptors to sex pheromones in Chilo suppressalis

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Hetan Chang ◽  
Yang Liu ◽  
Ting Yang ◽  
Paolo Pelosi ◽  
Shuanglin Dong ◽  
...  
Keyword(s):  
Sex Pheromones ◽  
Binding Proteins ◽  
Olfactory Receptors ◽  
Chilo Suppressalis ◽  
Pheromone Binding Proteins
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