Bethylids attacking stored‐product pests: an overview

Amante, Marco; Schöller, Matthias; Suma, Pompeo; Russo, Agatino

doi:10.1111/eea.12587

Cited by 18 publications

(10 citation statements)

References 96 publications

(231 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While live and dead 4th instars of the tested Tribolium spp. were successfully recognized as hosts by parasitoid females, larvae of O. surinamensis were not, although it had been described as host species in the past (Amante et al 2017b ; Evans 1969 ; Hagstrum and Subramanyam 2009 ). Chemical analysis of crude larval extracts revealed that the CHC profiles of Tribolium spp.…”

Section: Discussionmentioning

confidence: 99%

“…The polyphagous, cosmopolitan ectoparasitoid Holepyris sylvanidis (Bréthes 1913) (Hymenoptera: Bethylidae) has been described to parasitize larvae of various beetle taxa (i.e. Cucujidae, Silvanidae, Tenebrionidae) infesting processed plant products (Amante et al 2017b ; Evans 1969 ; Hagstrum and Subramanyam 2009 ). Adults and larvae of these beetles are major pests of stored grain or wheat flour and occur worldwide in warehouses and in the food-processing industry (Hertlein et al 2011 ; Vassilakos et al 2012 ).…”

Section: Introductionmentioning

confidence: 99%

“…Because of co-occurrence of H. sylvanidis and O. surinamensis in storage facilities (e.g. Eliopoulos et al 2002 ) this grain beetle has been also considered a potential host species (Amante et al 2017b ; Hagstrum and Subramanyam 2009 ). However, it is unknown as yet, whether H. sylvanidis indeed accepts this species as host and whether the parasitoid can successfully develop on this species.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Importance of Methyl-Branched Cuticular Hydrocarbons for Successful Host Recognition by the Larval Ectoparasitoid Holepyris sylvanidis

et al. 2020

View full text Add to dashboard Cite

Cuticular hydrocarbons (CHCs) of host insects are used by many parasitic wasps as contact kairomones for host location and recognition. As the chemical composition of CHCs varies from species to species, the CHC pattern represents a reliable indicator for parasitoids to discriminate host from non-host species. Holepyris sylvanidis is an ectoparasitoid of beetle larvae infesting stored products. Previous studies demonstrated that the larval CHC profile of the confused flour beetle, Tribolium confusum, comprises long chain linear and methyl-branched alkanes (methyl alkanes), which elicit trail following and host recognition in H. sylvanidis. Here we addressed the question, whether different behavioral responses of this parasitoid species to larvae of other beetle species are due to differences in the larval CHC pattern. Our study revealed that H. sylvanidis recognizes and accepts larvae of T. confusum, T. castaneum and T. destructor as hosts, whereas larvae of Oryzaephilus surinamensis were rejected. However, the latter species became attractive after applying a sample of T. confusum larval CHCs to solvent extracted larvae. Chemical analyses of the larval extracts revealed that CHC profiles of the Tribolium species were similar in their composition, while that of O. surinamensis differed qualitatively and quantitatively, i.e. methyl alkanes were present as minor components on the cuticle of all Tribolium larvae, but were absent in the O. surinamensis CHC profile. Furthermore, the parasitoid successfully recognized solvent extracted T. confusum larvae as hosts after they had been treated with a fraction of methyl alkanes. Our results show that methyl alkanes are needed for host recognition by H. sylvanidis.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Importance of Methyl-Branched Cuticular Hydrocarbons for Successful Host Recognition by the Larval Ectoparasitoid Holepyris sylvanidis

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Parasitoids attacking stored product pests mainly belong to the hymenopteran families Pteromalidae, Ichneumonidae, Braconidae and Bethylidae [ 9 , 10 , 11 ]. Theocolax elegans (Westwood) (Hymenoptera: Pteromalidae) is a cosmopolitan solitary ectoparasitoid of several stored product pests, including the coleopteran species Rhyzopertha dominica F. (Coleoptera: Bostrychidae), Stegobium paniceum L. (Coleoptera: Anobiidae), Callosobruchus spp.…”

Section: Introductionmentioning

confidence: 99%

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

Giunti

Campolo

Caccamo

et al. 2021

Insects

View full text Add to dashboard Cite

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.

show abstract

“…The insect infestation in cultivation and storage regions cause considerable economic losses to agricultural production worldwide (Amante et al, 2017). Among the most damaging species are Tetranychus urticae (Two-spotted spider) and Sitophilus zeamais (Maize weevil) (Baker et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the insecticidal potential of leaf extracts of Anadenanthera colubrina var. cebil (Griseb) Altschul against Tetranychus urticae Koch and Sitophilus zeamais Mots

Silva-Bessa

Mercês

Malafaia

et al. 2019

J. Env. Anal. Progr.

View full text Add to dashboard Cite

The deterioration and degradation of crops by insects causes economic losses of several billion dollars and affects food security. Sitophilus zeamais and Tetranychus urticae are two economically important species of crops around the world. The high toxicity of synthetic insecticides and the development of insect resistance to currently used chemicals stimulate the investigation of plant-derived insecticides as new alternatives for pest control. The insecticidal properties of secondary metabolites have been recognized, and have been confirmed scientifically in the last decades. The extract in cyclohexane (Ch) and ethyl acetate (Ea) of the leaves of Anadenanthera colubrina var. cebil collected in the dry and rainy seasons were evaluated for the survival and nutritional physiology of S. zeamais (maize weevil) and the acaricidal effect front T. urticae (two-spotted spider). All extracts induced mortality of S. zeamais; however, only cyclohexane dry season (Chd) and ethyl acetate in the rainy season (Ear) caused significant mortality (p <0.05), more than 50%, promoting physiological damage to insects in all concentrations tested. In the mortality tests with the spider mite, extracts Chd and Ear showed an LC50 of 52.75 and 156.42 mg.mL-1. Still, in the same test, it can be observed that oviposition was also susceptible to extracts. Therefore, the extracts of A. colubrina are a source of compounds capable of interfering with and impairing the metabolism of the two studied pests.

show abstract

Bethylids attacking stored‐product pests: an overview

Cited by 18 publications

References 96 publications

The Importance of Methyl-Branched Cuticular Hydrocarbons for Successful Host Recognition by the Larval Ectoparasitoid Holepyris sylvanidis

The Importance of Methyl-Branched Cuticular Hydrocarbons for Successful Host Recognition by the Larval Ectoparasitoid Holepyris sylvanidis

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

Evaluation of the insecticidal potential of leaf extracts of Anadenanthera colubrina var. cebil (Griseb) Altschul against Tetranychus urticae Koch and Sitophilus zeamais Mots

Contact Info

Product

Resources

About