Volatile infochemicals used in host and host habitat location byCotesia flavipes Cameron andCotesia sesamiae (Cameron) (Hymenoptera: Braconidae), larval parasitoids of stemborers on graminae

1996 ◽  
Vol 22 (2) ◽  
pp. 307-323 ◽  
Author(s):  
Adele J. Ngi-Song ◽  
William A. Overholt ◽  
Peter G. N. Njagi ◽  
Marcel Dicke ◽  
Jonathan N. Ayertey ◽  
...  
Keyword(s):  
Larval Parasitoids ◽  
Habitat Location ◽  
Volatile Infochemicals ◽  
Host Habitat ◽  
Host Habitat Location

scholarly journals Volatile Infochemicals from Rhyzopertha dominica Larvae and Larval Feces Involved in Theocolax elegans Host Habitat Location

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 142
Author(s):  
Giulia Giunti ◽  
Orlando Campolo ◽  
Pasquale Caccamo ◽  
Francesca Laudani ◽  
Vincenzo Palmeri
Keyword(s):  
Chemical Compounds ◽  
Rhyzopertha Dominica ◽  
Short Term ◽  
Habitat Location ◽  
Volatile Infochemicals ◽  
Stored Product Pest ◽  
Key Factor ◽  
Host Habitat ◽  
Chemical Inputs ◽  
Host Habitat Location

The development of biologically based approaches for stored product pest control is needed to reduce chemical inputs. Bioassays were performed to investigate host habitat location in the trophic interaction durum wheat/Rhyzopertha dominica/Theocolax elegans. GC-MS analyses were carried out to identify some chemical compounds produced by the host-related substrates. Choice and no-choice experiments demonstrated that female parasitoids were poorly attracted to intact kernels with respect to the infested substrates. Furthermore, T. elegans females performed longer residence time on infested wheat, and they generally displayed a short-term like fidelity for this cue, remaining on it during the whole observation. Infested wheat emitted one chemical (fenchone), which is possibly linked to host larvae presence, while the feces produced by host larvae emitted some other characteristic compounds. Results demonstrated that the presence of host larvae is a key factor for T. elegans host habitat location, considering that the attractiveness of the undamaged wheat is irrelevant. Furthermore, parasitoid females tended to stay on attractive cues, limiting the risk of contamination of other commodities. Biological control tools may be useful to improve the efficiency of pest management programs, but their application should be carefully evaluated.

First field evidence that parasitoids use upwind anemotaxis for host-habitat location

2007 ◽  
Vol 123 (3) ◽  
pp. 299-307 ◽  
Author(s):  
Ingrid H. Williams ◽  
David J.T. Frearson ◽  
Hassan Barari ◽  
Alastair McCartney
Keyword(s):  
Habitat Location ◽  
Field Evidence ◽  
Host Habitat ◽  
Host Habitat Location

scholarly journals Response of Aphidius colemani to aphid sex pheromone varies depending on plant synergy and prior experience

2015 ◽  
Vol 105 (4) ◽  
pp. 507-514 ◽  
Author(s):  
G.M. Fernández-Grandon ◽  
G.M. Poppy
Keyword(s):  
Sex Pheromone ◽  
Movement Patterns ◽  
Foraging Patterns ◽  
Aphidius Colemani ◽  
Habitat Location ◽  
Pheromone Components ◽  
Host Habitat ◽  
Olfactory Stimuli ◽  
Aphid Sex Pheromone ◽  
Host Habitat Location

AbstractA critical stage in the success of a parasitoid is the ability to locate a host within its habitat. It is hypothesized that a series of olfactory cues may be involved in altering the parasitoid's movement patterns at this stage of foraging. This paper focuses specifically on host habitat location and host location and the olfactory stimuli necessary to mediate the transition between these stages. Firstly, we confirm the ability of the parasitoid Aphidius colemani to detect the aphid sex pheromone at an electrophysiological level. Following this we investigate the effect of the sex pheromone component (4aS,7S,7aR)-nepetalactone on the movement patterns of A. colemani and its retention within an area. The key findings of this work are that A. colemani is able to detect the sex pheromone components, that parasitoid retention is increased by a synergy of nepetalactone and other host-associated cues and that foraging patterns are augmented by the presence of nepetalactone or experience associated with nepetalactone.

scholarly journals Current Understanding and Future Prospects of Host Selection, Acceptance, Discrimination, and Regulation of Phorid Fly Parasitoids That Attack Ants

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Kaitlyn A. Mathis ◽  
Stacy M. Philpott
Keyword(s):  
Current Understanding ◽  
Host Acceptance ◽  
Future Directions ◽  
Habitat Location ◽  
Host Habitat ◽  
Phorid Flies ◽  
Multiple Species ◽  
Host Habitat Location ◽  
Host Regulation ◽  
Phorid Fly

Phorid fly parasitoids (Diptera: Phoridae) have evolved a diverse array of cues used to successfully parasitize their ant hosts. Successful parasitism often involves (a) host habitat location, (b) host location, (c) host acceptance, (d) host discrimination, and (e) host regulation. In this paper we discuss our current understanding of how phorid flies use each of these steps to successfully parasitize ant hosts. We examine the wide variety of strategies and cues used by a multiple species of phorid flies within three separate genera that most commonly parasitize ants (Apocephalus,Pseudacteon,and Neodohrniphora) and discuss future directions within this field of study.

Chemical stimuli in host-habitat location byLeptopilina heterotoma (Thomson) (Hymenoptera: Eucoilidae), a parasite ofDrosophila

1984 ◽  
Vol 10 (5) ◽  
pp. 695-712 ◽  
Author(s):  
M. Dicke ◽  
J. C. Van Lenteren ◽  
G. J. F. Boskamp ◽  
E. van Dongen-van Leeuwen
Keyword(s):  
Habitat Location ◽  
Host Habitat ◽  
Chemical Stimuli ◽  
Host Habitat Location

Host-habitat Location by the Parasitoid,Nasonia vitripennisWalker (Hymenoptera: Pteromalidae)

2013 ◽  
Vol 59 (1) ◽  
pp. 242-249 ◽  
Author(s):  
Christine Frederickx ◽  
Jessica Dekeirsschieter ◽  
Francois J. Verheggen ◽  
Eric Haubruge
Keyword(s):  
Habitat Location ◽  
Host Habitat ◽  
Host Habitat Location

scholarly journals Foliage Intensity is an Important Cue of Habitat Location for Empoasca onukii

Insects ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 426
Author(s):  
Lei Bian ◽  
Xiao Ming Cai ◽  
Zong Xiu Luo ◽  
Zhao Qun Li ◽  
Zong Mao Chen
Keyword(s):  
Compound Eye ◽  
Leaf Age ◽  
Spectral Composition ◽  
Suitable Habitat ◽  
Habitat Location ◽  
Host Habitat ◽  
Olfactory Stimuli ◽  
Tea Plants ◽  
Host Habitat Location ◽  
Retinular Cells

For many herbivorous insects, vision is more important than olfaction in the prealighting stage of host habitat location. Tea leafhoppers, Empoasca onukii (Hemiptera, Cicadellidae), are serious pests that preferentially inhabit the tender leaves of tea plants across China. Here, we investigated whether tea leafhoppers could distinguish foliage colors associated with different leaf ages and use this visual cue to guide suitable habitat location from short distances. Similar to honeybees, the adult E. onukii has an apposition type of compound eye, and each ommatidium has eight retinular cells, in which three spectral types of photoreceptors are distributed, with peak sensitivities at 356 nm (ultraviolet), 435 nm (blue), and 542 nm (green). Both changes in spectral intensity and hue of reflectance light of the host foliage were correlated with varying leaf age, and the intensity linearly decreased with increasing leaf age. Behavioral responses also showed that adult E. onukii could discriminate between the simulated colors of host foliage at different leaf ages without olfactory stimuli and selected the bright colors that strongly corresponded to those of tender leaves. The results suggest that, compared with the spectral composition (hue), the intensity of light reflectance from leaves at different ages is more important for adult leafhoppers when discriminating host foliage and could guide them to tender leaves at the top of tea shoots.

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