The influence of odour on the oviposition behaviour of the cabbage root fly

Jong, R. de; Städler, Erich

doi:10.1007/s000490050047

Cited by 24 publications

(11 citation statements)

References 23 publications

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“…Gravid females of the cabbage root fly arrive at a hostplant odour source by a series of short upwind flights, landing and reorientating into the wind between flights (Hopkins et al, 1999). The adult female oviposits in the soil close to the stem of Brassica plants (Nottingham and Coaker, 1985;De Jong and Städler, 1999), while damage to the plants is caused by hatched larvae feeding on the roots.…”

Section: The Cabbage Root Fly (Delia Radicum Syn Brassicae) and Thementioning

confidence: 99%

“…Only mated gravid females respond to them (Hawkes and Coaker, 1979;Nottingham and Coaker, 1985;Renwick et al, 1992;Roessingh et al, 1992;Simmonds et al, 1994;De Jong and Städler, 1999;Hurter et al, 1999). In a study examining the role of glucosinolates towards oviposition behaviour of the cabbage root fly using egg counts and electrophysiological recordings from tarsal chemoreceptors, Roessingh et al (1992) showed that the D sensilla on segments 3 and 4 of the tarsus of cabbage root fly females contain a sensitive receptor cell for glucosinolates.…”

Section: Cabbage and Turnip Root Flies (Delia Radicum And D Floralis)mentioning

confidence: 99%

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Defence mechanisms of Brassicaceae: implications for plant-insect interactions and potential for integrated pest management. A review

Ahuja

Rohloff

Bones

2010

Agron. Sustain. Dev.

212

165

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-Brassica crops are grown worldwide for oil, food and feed purposes, and constitute a significant economic value due to their nutritional, medicinal, bioindustrial, biocontrol and crop rotation properties. Insect pests cause enormous yield and economic losses in Brassica crop production every year, and are a threat to global agriculture. In order to overcome these insect pests, Brassica species themselves use multiple defence mechanisms, which can be constitutive, inducible, induced, direct or indirect depending upon the insect or the degree of insect attack. Firstly, we give an overview of different Brassica species with the main focus on cultivated brassicas. Secondly, we describe insect pests that attack brassicas. Thirdly, we address multiple defence mechanisms, with the main focus on phytoalexins, sulphur, glucosinolates, the glucosinolate-myrosinase system and their breakdown products. In order to develop pest control strategies, it is important to study the chemical ecology, and insect behaviour. We review studies on oviposition regulation, multitrophic interactions involving feeding and host selection behaviour of parasitoids and predators of herbivores on brassicas. Regarding oviposition and trophic interactions, we outline insect oviposition behaviour, the importance of chemical stimulation, oviposition-deterring pheromones, glucosinolates, isothiocyanates, nitriles, and phytoalexins and their importance towards pest management. Finally, we review brassicas as cover and trap crops, and as biocontrol, biofumigant and biocidal agents against insects and pathogens. Again, we emphasise glucosinolates, their breakdown products, and plant volatile compounds as key components in these processes, which have been considered beneficial in the past and hold great prospects for the future with respect to an integrated pest management.Brassicas / insect pests / chemical ecology / trophic levels / glucosinolates / isothiocyanates / defence mechanisms / biocontrol / trap crops / integrated pest management

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Section: The Cabbage Root Fly (Delia Radicum Syn Brassicae) and Thementioning

confidence: 99%

Section: Cabbage and Turnip Root Flies (Delia Radicum And D Floralis)mentioning

confidence: 99%

Defence mechanisms of Brassicaceae: implications for plant-insect interactions and potential for integrated pest management. A review

Ahuja

Rohloff

Bones

2010

Agron. Sustain. Dev.

212

165

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“…Both modes of chemical perception are known to be important for oviposition in the cabbage root fly (e.g. Roessingh et al 1997;De Jong & Städler 1999).…”

Section: Discussionmentioning

confidence: 99%

Complex host marking in the cabbage root fly

Jong¹,

Städler²

2001

Chemoecology

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The cabbage root fly marks an oviposition site with two different chemical messages. Plants that were exposed to ovipositing flies are less acceptable than control plants, while sand particles that were closely associated with an actual oviposition site stimulate oviposition. By combining the information from these opposing messages, the cabbage root fly may be able to optimise the size of its egg clusters in relation to the food available for the larvae. The findings might account for the aggregated oviposition observed in this species.

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“…Such synergistic effects of volatile host-plant compounds have been observed in different insects (refs in Städler 2002). An example reported by de Jong and Städler (1999) is the effect of Brassica volatiles, probably including ITC, on the oviposition behaviour of Delia radicum in contact with the host plant. The authors found no difference in the number of landings of flies but more mature females descended from these leaves when odour was present.…”

Section: Insect Reactions To Wax and Gs Interactionsmentioning

confidence: 99%

Glucosinolates on the leaf surface perceived by insect herbivores: review of ambiguous results and new investigations

Städler

Reifenrath

2008

Phytochem Rev

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Herbivorous insects identify their host plants either by structural features, chemical cues, or a combination. Some insects probe the host leaf prior feeding or oviposition, other species use olfactorial cues or compounds somewhere on the surface. Insects attacking Brassicaceae are no exception, some are attracted and stimulated by volatile isothiocyanates (ITC), many others depend fully on the non-volatile glucosinolates (GS) for host-plant recognition and acceptance. Since most insects have no access to the leaf interior investigators concluded that GS must be present on the leaf surface and ITC in the headspace. However, peelings of mechanically removed surface waxes were devoid of measurable amounts of GS, whereas solvent surface extractions revealed a correlation between stomatal conditions and GS concentrations. Both observations lead to the conclusion that the presence of GS on the top leaf surface is rather unlikely. In the experimental part we show that a chloroform/methanol/water (2:1:1 vol/ vol/vol) solvent leaf extract contains GS and, in addition, thia-triaza-fluorenes (TTF), other oviposition stimulants of the cabbage root fly, Delia radicum. Electrophysiological investigations showed that both, GS and TTF stimulated specific receptor neurones of the fly. We suggest that these compounds probably originated from deeper leaf layers and that herbivorous insects may penetrate the wax layer and perceive the stimulating compounds in deeper layers or through the stomata.

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The influence of odour on the oviposition behaviour of the cabbage root fly

Cited by 24 publications

References 23 publications

Defence mechanisms of Brassicaceae: implications for plant-insect interactions and potential for integrated pest management. A review

Defence mechanisms of Brassicaceae: implications for plant-insect interactions and potential for integrated pest management. A review

Complex host marking in the cabbage root fly

Glucosinolates on the leaf surface perceived by insect herbivores: review of ambiguous results and new investigations

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