The response of wheat bulb fly larvae to cereal exudates and extracts

Scott, G. C.

doi:10.1111/j.1744-7348.1974.tb01397.x

Cited by 14 publications

(12 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Scott (1974) and Greenway et al. (1976) concluded that neonate WBF larvae find wheat exudates and extracts by random movement, followed by an arrestant effect of the exudates and extracts.…”

Section: Discussionmentioning

confidence: 99%

“…Seedlings with coleoptiles at least 2 cm long were transplanted to gel containing 1.5% sodium alginate and 0.3% calcium citrate by weight (after Scott, 1974). Seedlings for whole plant treatments were grown in inverted plastic cellular trays filled with alginate gel, with a shoot protruding through the hole in the ‘base’ of each cell.…”

Section: Methodsmentioning

confidence: 99%

“…Scott (1974) repeated Stokes's (1956) results in choice test bioassays, but concluded that the larvae moved at random until they encountered a gel, and were held at wheat gels by arrestants, rather than drawn to them by attractants. In a single‐choice ‘target arrestancy test’Scott (1974) tested extracts of rye, barley, oats, and five grass species (but not couch grass, Elytrigia repens ). The wheat extract had the strongest arrestant effect, and oat extract had none.…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Host plant choice and location by larvae of the wheat bulb fly (Delia coarctata)

Marriott¹,

Evans²

2003

Entomologia Exp Applicata

View full text Add to dashboard Cite

Wheat bulb fly (Delia coarctata Fallen, Diptera: Anthomyiidae) is an important pest of winter wheat in the eastern half of the UK, and in northern and eastern Europe. The larvae must find a host plant and invade a tiller soon after hatching in late January. Chemical controls are costly and weather conditions may reduce their efficacy or prevent their application. Post‐emergence control relies on organophosphate insecticides, which may soon be withdrawn due to concerns about their negative health and environmental effects. Winter wheat (Triticum aestivum L.) is the preferred cereal host, but other winter cereals and related grasses may also be attacked, while oats (Avena spp.) are shunned. In choice test bioassays, neonate larvae chose couch grass (Elytrigia repens (L.) Nevski syn. Elymus repens (L.) Gould, Agropyearon repens (L.) Beauv.) seedlings and exudates over wheat seedlings and exudates, and exhibited geotaxis and negative phototaxis. Analysis of larval trails in choice test bioassays of seedling exudates showed that couch exudates are more attractive than wheat exudates, and that wheat exudates are more arrestant than couch exudates. This suggests that infochemicals isolated from couch, wheat, and oats could be used in wheat bulb fly control; possible delivery mechanisms are discussed. These findings, previous research, and a comparison of the phenologies and geographical distributions of D. coarctata and its hosts suggest that E. repens is the natural host of D. coarctata.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Host plant choice and location by larvae of the wheat bulb fly (Delia coarctata)

Marriott¹,

Evans²

2003

Entomologia Exp Applicata

View full text Add to dashboard Cite

show abstract

“…In some cases, it has been established that volatile cues mediate 'attraction' to roots without necessarily identifying the chemical compounds involved. These include location by wireworms (Calkins et al, 1967;Horton and Landolt, 2002), the clover root weevil Sitona hispidulus (Wolfson, 1987), the wheat bulb fly (Delia coarctata) (Stokes, 1956;Long, 1958;Scott, 1974), and the grass grub (Costelytra zealandica) (Sutherland, 1972;Sutherland and Hillier, 1974b).…”

Section: Mechanisms Of Root Locationmentioning

confidence: 99%

Foraging in the Dark – Chemically Mediated Host Plant Location by Belowground Insect Herbivores

2012

View full text Add to dashboard Cite

Root-feeding insects are key components in many terrestrial ecosystems. Like shoot-feeding insect herbivores, they exploit a range of chemical cues to locate host plants. Respiratory emissions of carbon dioxide (CO(2)) from the roots is widely reported as the main attractant, however, there is conflicting evidence about its exact role. CO(2) may act as a 'search trigger' causing insects to search more intensively for more host specific signals, or the plant may 'mask' CO(2) emissions with other root volatiles thus avoiding detection. At least 74 other compounds elicit behavioral responses in root-feeding insects, with the majority (>80 %) causing attraction. Low molecular weight compounds (e.g., alcohols, esters, and aldehydes) underpin attraction, whereas hydrocarbons tend to have repellent properties. A range of compounds act as phagostimulants (e.g., sugars) once insects feed on roots, whereas secondary metabolites often deter feeding. In contrast, some secondary metabolites usually regarded as plant defenses (e.g., dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA)), can be exploited by some root-feeding insects for host location. Insects share several host location cues with plant parasitic nematodes (CO(2), DIMBOA, glutamic acid), but some compounds (e.g., cucurbitacin A) repel nematodes while acting as phagostimulants to insects. Moreover, insect and nematode herbivory can induce exudation of compounds that may be mutually beneficial, suggesting potentially significant interactions between the two groups of herbivores. While a range of plant-derived chemicals can affect the behavior of root-feeding insects, little attempt has been made to exploit these in pest management, though this may become a more viable option with diminishing control options.

show abstract

“…Laboratory studies have established that wheat plants exude substances (probably polyphenolic) into the soil which arrest the larvae, causing them to aggregate, whereas oats produce a substance (thought to be a polyhydroxylated aliphatic material) having an anti-arrestant effect (Scott, 1974). For example, wheat-bulb fly larvae attack wheat and many other graminaceous plants, but oats are immune.…”

Section: The Potential Of Behaviour-controlling Chemicals For Soil-bomentioning

confidence: 99%

The Use of Pesticides in Crop Production With Special Reference to Their Behaviour in Soils

Graham‐Bryce

1980

Agrochemicals in Soils

View full text Add to dashboard Cite

The response of wheat bulb fly larvae to cereal exudates and extracts

Cited by 14 publications

References 8 publications

Host plant choice and location by larvae of the wheat bulb fly (Delia coarctata)

Host plant choice and location by larvae of the wheat bulb fly (Delia coarctata)

Foraging in the Dark – Chemically Mediated Host Plant Location by Belowground Insect Herbivores

The Use of Pesticides in Crop Production With Special Reference to Their Behaviour in Soils

Contact Info

Product

Resources

About