The effect of rearing history and aphid density on volatile-mediated foraging behaviour of Diaeretiella rapae

Pasquale Cascone, Rieta Gols, Nina E. Fatouros, Camille Ponzio, Marcel Dicke, Emilio Guerrieri

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

1. Parasitoid females foraging for hosts rely on cues derived from the insect host, the host plant and/or their interaction, and all of these can be learned during the immature and adult stages.
2. The present study investigated the importance of rearing history on foraging behaviour of Diaeretiella rapae, an endoparasitoid often associated with aphids feeding on brassicaceous plant species.
3. Parasitoids were reared on one of the four possible combinations, comprising two brassicaceous host plant species, Brassica nigra or Raphanus sativus, and two aphid species Brevicoryne brassicae or Myzus persicae. These parasitoids were tested in a Y‐tube olfactometer and given the choice between volatiles emitted by an aphid‐infested plant (25 or 100 aphids per plant) and an uninfested control plant. The parasitoid's responses were compared when offered: (i) the same plant–aphid combination as the one on which it had been reared; (ii) the same host plant infested with the alternative aphid species; or (iii) an alternative plant with the alternative aphid species.
4. Aphid density did affect the behavioural responses to the various odour sources, but rearing history did not. Diaeretiella rapae only preferred aphid‐induced to non‐induced plant volatiles at low aphid infestation level, whereas they did not discriminate between volatiles at high aphid infestation level.
5. It is concluded that aphid‐induced volatiles of brassicaceous plants play an important role during host habitat location, but seem less important for parasitoids to locate the aphid host itself. The data are discussed in the light of manipulation of host plant defences by aphids.
LanguageEnglish
Pages255-264
Number of pages10
JournalEcological Entomology
Volume44
Issue number2
Early online dateNov 2018
DOIs
Publication statusPublished - Apr 2019

Fingerprint

Diaeretiella rapae
foraging behavior
aphid
rearing
Aphidoidea
foraging
history
host plant
host plants
parasitoids
effect
parasitoid
Brassica nigra
Brevicoryne brassicae
plant defense
olfactometers
Raphanus sativus
Myzus persicae
behavioral response

Cite this

@article{a72db7f051004318804a75c3c02acba5,
title = "The effect of rearing history and aphid density on volatile-mediated foraging behaviour of Diaeretiella rapae",
abstract = "1. Parasitoid females foraging for hosts rely on cues derived from the insect host, the host plant and/or their interaction, and all of these can be learned during the immature and adult stages.2. The present study investigated the importance of rearing history on foraging behaviour of Diaeretiella rapae, an endoparasitoid often associated with aphids feeding on brassicaceous plant species. 3. Parasitoids were reared on one of the four possible combinations, comprising two brassicaceous host plant species, Brassica nigra or Raphanus sativus, and two aphid species Brevicoryne brassicae or Myzus persicae. These parasitoids were tested in a Y‐tube olfactometer and given the choice between volatiles emitted by an aphid‐infested plant (25 or 100 aphids per plant) and an uninfested control plant. The parasitoid's responses were compared when offered: (i) the same plant–aphid combination as the one on which it had been reared; (ii) the same host plant infested with the alternative aphid species; or (iii) an alternative plant with the alternative aphid species. 4. Aphid density did affect the behavioural responses to the various odour sources, but rearing history did not. Diaeretiella rapae only preferred aphid‐induced to non‐induced plant volatiles at low aphid infestation level, whereas they did not discriminate between volatiles at high aphid infestation level. 5. It is concluded that aphid‐induced volatiles of brassicaceous plants play an important role during host habitat location, but seem less important for parasitoids to locate the aphid host itself. The data are discussed in the light of manipulation of host plant defences by aphids.",
author = "Pasquale Cascone and Rieta Gols and Fatouros, {Nina E.} and Camille Ponzio and Marcel Dicke and Emilio Guerrieri",
year = "2019",
month = "4",
doi = "10.1111/een.12704",
language = "English",
volume = "44",
pages = "255--264",
journal = "Ecological Entomology",
issn = "0307-6946",
publisher = "Wiley",
number = "2",

}

The effect of rearing history and aphid density on volatile-mediated foraging behaviour of Diaeretiella rapae. / Cascone, Pasquale; Gols, Rieta; Fatouros, Nina E.; Ponzio, Camille; Dicke, Marcel; Guerrieri, Emilio.

In: Ecological Entomology, Vol. 44, No. 2, 04.2019, p. 255-264.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - The effect of rearing history and aphid density on volatile-mediated foraging behaviour of Diaeretiella rapae

AU - Cascone, Pasquale

AU - Gols, Rieta

AU - Fatouros, Nina E.

AU - Ponzio, Camille

AU - Dicke, Marcel

AU - Guerrieri, Emilio

PY - 2019/4

Y1 - 2019/4

N2 - 1. Parasitoid females foraging for hosts rely on cues derived from the insect host, the host plant and/or their interaction, and all of these can be learned during the immature and adult stages.2. The present study investigated the importance of rearing history on foraging behaviour of Diaeretiella rapae, an endoparasitoid often associated with aphids feeding on brassicaceous plant species. 3. Parasitoids were reared on one of the four possible combinations, comprising two brassicaceous host plant species, Brassica nigra or Raphanus sativus, and two aphid species Brevicoryne brassicae or Myzus persicae. These parasitoids were tested in a Y‐tube olfactometer and given the choice between volatiles emitted by an aphid‐infested plant (25 or 100 aphids per plant) and an uninfested control plant. The parasitoid's responses were compared when offered: (i) the same plant–aphid combination as the one on which it had been reared; (ii) the same host plant infested with the alternative aphid species; or (iii) an alternative plant with the alternative aphid species. 4. Aphid density did affect the behavioural responses to the various odour sources, but rearing history did not. Diaeretiella rapae only preferred aphid‐induced to non‐induced plant volatiles at low aphid infestation level, whereas they did not discriminate between volatiles at high aphid infestation level. 5. It is concluded that aphid‐induced volatiles of brassicaceous plants play an important role during host habitat location, but seem less important for parasitoids to locate the aphid host itself. The data are discussed in the light of manipulation of host plant defences by aphids.

AB - 1. Parasitoid females foraging for hosts rely on cues derived from the insect host, the host plant and/or their interaction, and all of these can be learned during the immature and adult stages.2. The present study investigated the importance of rearing history on foraging behaviour of Diaeretiella rapae, an endoparasitoid often associated with aphids feeding on brassicaceous plant species. 3. Parasitoids were reared on one of the four possible combinations, comprising two brassicaceous host plant species, Brassica nigra or Raphanus sativus, and two aphid species Brevicoryne brassicae or Myzus persicae. These parasitoids were tested in a Y‐tube olfactometer and given the choice between volatiles emitted by an aphid‐infested plant (25 or 100 aphids per plant) and an uninfested control plant. The parasitoid's responses were compared when offered: (i) the same plant–aphid combination as the one on which it had been reared; (ii) the same host plant infested with the alternative aphid species; or (iii) an alternative plant with the alternative aphid species. 4. Aphid density did affect the behavioural responses to the various odour sources, but rearing history did not. Diaeretiella rapae only preferred aphid‐induced to non‐induced plant volatiles at low aphid infestation level, whereas they did not discriminate between volatiles at high aphid infestation level. 5. It is concluded that aphid‐induced volatiles of brassicaceous plants play an important role during host habitat location, but seem less important for parasitoids to locate the aphid host itself. The data are discussed in the light of manipulation of host plant defences by aphids.

U2 - 10.1111/een.12704

DO - 10.1111/een.12704

M3 - Article

VL - 44

SP - 255

EP - 264

JO - Ecological Entomology

T2 - Ecological Entomology

JF - Ecological Entomology

SN - 0307-6946

IS - 2

ER -