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Insects

Title:		Volatile Infochemicals from Rhyzopertha dominica Larvae and Larval Feces Involved in Theocolax elegans Host Habitat Location
Author(s):		Giunti G; Campolo O; Caccamo P; Laudani F; Palmeri V;
Address:		"Department of Agriculture, University Mediterranea of Reggio Calabria, Loc. Feo di Vito, 89122 Reggio Calabria (RC), Italy"
Journal Title:		Insects
Year:		2021
Volume:		20210207
Issue:		2
Page Number:		-
DOI:		10.3390/insects12020142
ISSN/ISBN:		2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking)
Abstract:		"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"
Keywords:		Bostrychidae Pteromalidae behavior biocontrol integrated pest management parasitoid stored product;
Notes:		"PubMed-not-MEDLINEGiunti, Giulia Campolo, Orlando Caccamo, Pasquale Laudani, Francesca Palmeri, Vincenzo eng Switzerland 2021/02/11 Insects. 2021 Feb 7; 12(2):142. doi: 10.3390/insects12020142"