Abstract
Aphis gossypii Glover (Hemiptera: Aphididae) is an important cucumber pest especially in greenhouse. The efficacy of simultaneous release of generalist predator, Orius albidipennis Reuter (Hemiptera: Anthocoridae) and a specialist parasitic wasp, Aphidius colemani Viereck (Hymenoptera: Braconidae), was evaluated in laboratory conditions against the pest. For this purpose, investigations were carried out on preference of the predator between parasitized and non-parasitized aphids. In addition, production of volatile infochemicals between the natural enemies (NEs) was studied by olfactometry trials. In another part of this research, systemic production of volatile synomone by the infested cucumber plants for attraction of each NE was examined by the olfactometry tests. Results revealed that O. albidipennis had no obvious preference to either the parasitized or non-parasitized aphids, while both NEs were significantly attracted to volatiles emitted from infested host plants. Our findings revealed that each of the NEs avoided odors which indicated the presence of another intraguild competitor. The documented facts from the entire study reveal that the NEs are good biocontrol agents against A. gossypii on cucumber, but their avoidance from each other makes simultaneous release of the predator and parasitic wasps unsuitable for biological control of this aphid.
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Claims 4
Claim · model-written summary
Orius albidipennis showed no obvious preference between parasitized and non-parasitized aphids.
- Taxon
- cucumber
Cucumis sativust0 - Interactor
- Aphis gossypii
Aphis gossypiit1pest - Second interactor
- O. albidipennisOrius albidipennise0biocontrol_agent
- Outcome
- no obvious preference to either the parasitized or non-parasitized aphidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“O. albidipennis had no obvious preference to either the parasitized or non-parasitized aphids”
t0“cucumber”
t1“Aphis gossypii”
Claim · model-written summary
Both natural enemies were significantly attracted to volatiles from infested cucumber plants.
- Taxon
- cucumberCucumis sativust0
- Interactor
- Orius albidipennisOrius albidipennist1biocontrol_agent
- Second interactor
- Aphidius colemani
Aphidius colemanit1biocontrol_agent - Outcome
- significantly attracted to volatiles emitted from infested host plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both NEs were significantly attracted to volatiles emitted from infested host plants”
t0“cucumber”
t1“Orius albidipennis and Aphidius colemani”
Claim · model-written summary
Each natural enemy avoided odors indicating the other intraguild competitor.
- Taxon
- cucumberCucumis sativust0
- Interactor
- Orius albidipennisOrius albidipennist1biocontrol_agent
- Second interactor
- Aphidius colemaniAphidius colemanit1biocontrol_agent
- Outcome
- avoided odors which indicated the presence of another intraguild competitore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“each of the NEs avoided odors which indicated the presence of another intraguild competitor”
t0“cucumber”
t1“Orius albidipennis and Aphidius colemani”
Claim · model-written summary
The authors consider simultaneous release of the predator and wasp unsuitable for cucumber aphid control.
- Taxon
- cucumberCucumis sativust0
- Interactor
- Aphis gossypiiAphis gossypiit1pest
- Outcome
- simultaneous release of the predator and parasitic wasps unsuitable for biological control of this aphide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“simultaneous release of the predator and parasitic wasps unsuitable for biological control of this aphid”
t0“cucumber”
t1“Aphis gossypii”