Alarm recruitment, attack behavior, and the role of the alarm pheromone in Polybia occidentalis (Hymenoptera: Vespidae)

1981 ◽  
Vol 9 (2) ◽  
pp. 143-148 ◽  
Author(s):  
Robert L. Jeanne
Keyword(s):  
Alarm Pheromone ◽  
Attack Behavior ◽  
Polybia Occidentalis ◽  
Alarm Recruitment

The role of experience in risk assessment: Avoidance of areas chemically labelled with fathead minnow alarm pheromone by conspecifics and heterospecifics

Ecoscience ◽  
1995 ◽  
Vol 2 (2) ◽  
pp. 116-122 ◽  
Author(s):  
Brian D. Wisenden ◽  
Douglas P. Chivers ◽  
Grant E. Brown ◽  
R. Jan F. Smith
Keyword(s):  
Risk Assessment ◽  
Fathead Minnow ◽  
Alarm Pheromone

Ant-aphid association: role of aphid alarm pheromone

Science ◽  
1976 ◽  
Vol 192 (4246) ◽  
pp. 1349-1351 ◽  
Author(s):  
L. Nault ◽  
M. Montgomery ◽  
W. Bowers
Keyword(s):  
Alarm Pheromone ◽  
Aphid Alarm Pheromone

scholarly journals Halyomorpha halys TAR1 characterization revealed its involvement in (E)-2-decenal pheromone perception

2021 ◽  
pp. jeb.238816
Author(s):  
Luca Finetti ◽  
Marco Pezzi ◽  
Stefano Civolani ◽  
Girolamo Calò ◽  
Chiara Scapoli ◽  
...  
Keyword(s):  
Alarm Pheromone ◽  
Receptor Gene ◽  
Adult Brain ◽  
Halyomorpha Halys ◽  
Innovative Methods ◽  
Qpcr Analysis ◽  
Pheromone Reception ◽  
Pheromone Perception

In insects, the tyramine receptor 1 (TAR1) has been shown to control several physiological functions, including olfaction. We investigated the molecular and functional profile of the Halyomorpha halys type 1 tyramine receptor gene (HhTAR1) and its role in olfactory functions of this pest. Molecular and pharmacological analyses confirmed that the HhTAR1 gene codes for a true TAR1. The RT-qPCR analysis revealed that HhTAR1 is expressed mostly in adult brain and antennae as well as in early development stages (eggs, 1st and 2nd instar nymphs). In particular, among the antennomeres that compose a typical H. halys antenna, HhTAR1 was more expressed in flagellomeres. Scanning electron microscopy (SEM) investigation revealed the type and distribution of sensilla on adult H. halys antennae: both flagellomeres appear rich in trichoid and grooved sensilla, known to be associated with olfactory functions. Through a RNAi approach, topically delivered HhTAR1 dsRNA induced a 50 % gene downregulation after 24 h in H. halys 2nd instar nymphs. An innovative behavioral assay revealed that HhTAR1 RNAi-silenced 2nd instar nymphs were less susceptible to the alarm pheromone component (E)-2 decenal as compared to control. These results provide critical information concerning the TAR1 role in olfaction regulation, especially alarm pheromone reception, in H. halys. Furthermore, considering the emerging role of TAR1 as target of biopesticides, this work opens the way for further investigation on innovative methods for controlling H. halys.

Chemical characterization of the alarm pheromone in the venom of Polybia occidentalis and of volatiles from the venom of P. sericea

2000 ◽  
Vol 25 (4) ◽  
pp. 363-369 ◽  
Author(s):  
F. R. Dani ◽  
R. L. Jeanne ◽  
S. R. Clarke ◽  
G. R. Jones ◽  
E. D. Morgan ◽  
...  
Keyword(s):  
Alarm Pheromone ◽  
Chemical Characterization ◽  
Polybia Occidentalis

Chemical characterization of the alarm pheromone in the venom of Polybia occidentalis and of volatiles from the venom of P. sericea

2008 ◽  
Vol 25 (4) ◽  
pp. 363-369 ◽  
Author(s):  
F. R. Dani ◽  
R. L. Jeanne ◽  
S. R. Clarke ◽  
G. R. Jones ◽  
E. D. Morgan ◽  
...  
Keyword(s):  
Alarm Pheromone ◽  
Chemical Characterization ◽  
Polybia Occidentalis

Alate Semiochemicals Release Worker Behavior During Fire Ant Nuptial Flights

1994 ◽  
Vol 29 (1) ◽  
pp. 143-151 ◽  
Author(s):  
Martin S. Obin ◽  
Robert K. Vander Meer
Keyword(s):  
Solenopsis Invicta ◽  
Alarm Pheromone ◽  
Mandibular Gland ◽  
Fire Ants ◽  
Worker Behavior ◽  
Group Recruitment ◽  
Recruitment Behavior ◽  
Solenopsis Invicta Buren ◽  
Mating Flights ◽  
Alarm Recruitment

Bioassays conducted during induced laboratory mating flights of Solenopsis invicta Buren investigated whether alate semiochemicals stimulate formation of the worker retinues that accompany alates during the preflight stage. In paired tests comparing worker response to alates vs response to other workers, workers preferentially entered, searched and recruited nestmates to vials that contained either an alate corpse or alate residue. Olfactory cues of both males and gynes (but not workers) attracted workers, induced alarm - recruitment, and promoted alate retrieval. Workers responding to these cues in our bioassays exhibited recruitment behavior previously unreported for fire ants, i.e., “back - and - forth jerking” and “group recruitment.” We propose that the observed worker behavior is a response to alate mandibular gland - derived alarm pheromone modulated by less volatile caste recognition cues associated with the alate cuticle.

scholarly journals Tyramine receptor drives olfactory response to (E)-2-decenal in the stink bug Halyomorpha halys

2020 ◽  
Author(s):  
Luca Finetti ◽  
Marco Pezzi ◽  
Stefano Civolani ◽  
Girolamo Calò ◽  
Chiara Scapoli ◽  
...  
Keyword(s):  
Alarm Pheromone ◽  
Receptor Gene ◽  
Adult Brain ◽  
Halyomorpha Halys ◽  
Stink Bug ◽  
Innovative Methods ◽  
Qpcr Analysis ◽  
Pheromone Reception

AbstractIn insects, the tyramine receptor 1 (TAR1) has been shown to control several physiological functions, including olfaction. We investigated the molecular and functional profile of the Halyomorpha halys type 1 tyramine receptor gene (HhTAR1) and its role in olfactory functions of this pest. Molecular and pharmacological analyses confirmed that the HhTAR1 gene codes for a true TAR1. The RT-qPCR analysis revealed that HhTAR1 is expressed mostly in adult brain and antennae as well as in early development stages (eggs, 1st and 2nd instar nymphs). In particular, among the antennomeres that compose a typical H. halys antenna, HhTAR1 was more expressed in flagellomeres. Scanning electron microscopy (SEM) investigation revealed the type and distribution of sensilla on adult H. halys antennae: both flagellomeres appear rich in trichoid and grooved sensilla, known to be associated with olfactory functions. Through a RNAi approach, topically delivered HhTAR1 dsRNA induced a 50 % gene downregulation after 24 h in H. halys 2nd instar nymphs. An innovative behavioral assay revealed that HhTAR1 RNAi-silenced 2nd instar nymphs were less susceptible to the alarm pheromone component (E)-2 decenal as compared to control. These results provide critical information concerning the TAR1 role in olfaction regulation, especially alarm pheromone reception, in H. halys. Furthermore, considering the emerging role of TAR1 as target of biopesticides, this work paves the way for further investigation on innovative methods for controlling H. halys.

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