Chemicals on the leaf surface, information about the plant available to insects

Derridj, Sylvie; Wu, B. R.; Stammitti, Linda; Garrec, Jean-Pierre; Derrien, Amélie

doi:10.1007/978-94-009-1720-0_45

Cited by 13 publications

(4 citation statements)

References 6 publications

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“…If leaf size, phenolics and the presence of conspecifics are not affecting female oviposition behaviour, what cues -if any -could then be guiding female choice? In addition to the leaf traits investigated in this study, numerous chemical and physical properties of leaves, such as their nutritional value and toughness, could influence patterns of oviposition (Valladares & Lawton 1991;Derridj et al 1996;Nieminen et al 2003;Schoonhoven, Van Loon & Dicke 2005). We suspect that the tendency for females in some pairs of the tree-pair experiment to prefer shoots from one of the trees above shoots from the other tree might be at least partly due to differences in leaf toughness, stemming from treespecific differences in phenology.…”

Section: Discussionmentioning

confidence: 99%

Resource selection by female moths in a heterogeneous environment: what is a poor girl to do?

Gripenberg

Morriën

Cudmore

et al. 2007

Journal of Animal Ecology

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Summary1. According to the preference-performance hypothesis, female insects select resources that maximize offspring performance. To achieve high fitness, leaf miner females should then adjust their oviposition behaviour in response to leaf attributes signalling high host quality. 2.Here we investigate resource selection in Tischeria ekebladella , a leaf-mining moth of the pedunculate oak ( Quercus robur ), in relation to two alternative hypotheses: (1) females select their resources with respect to their future quality for developing larvae; or (2) temporal changes in resource quality prevent females from selecting the best larval resources. 3. Specifically, we test whether females show the strongest selection at the levels at which quality varies the most (shoots and leaves); whether they respond to specific leaf attributes (leaf size, phenolic content and conspecific eggs); and whether female preference is reflected in offspring performance. 4. Female choice of leaves was found to be non-random. Within trees, the females preferred certain shoots, but when the shoots were on different trees the degree of discrimination was about four times larger than when they were on the same trees. 5. While females typically lay more eggs on large leaves, this is not a result of active selection of large leaves, but rather a result of females moving at random and ovipositing at regular intervals. 6. The females in our study did not adjust their oviposition behaviour in response to leaf phenolic contents (as measured by the time of larval feeding). Neither did they avoid leaves with conspecific eggs. 7. Female choice of oviposition sites did not match patterns of offspring performance: there was no positive association between offspring survival and counts of eggs. 8. We propose that temporal variation in resource quality may prevent female moths from evaluating resource quality reliably. To compensate for this, females may adopt a risk-spreading strategy when selecting their resources.

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Section: Discussionmentioning

confidence: 99%

Resource selection by female moths in a heterogeneous environment: what is a poor girl to do?

Gripenberg

Morriën

Cudmore

et al. 2007

Journal of Animal Ecology

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Section: Methodsmentioning

confidence: 99%

“…To determine the role of maize surface chemicals on oviposition response, females were placed individually in transparent plastic jars (16 cm high, 9 cm diameter, RH over 80%) and offered two aforementioned nylon surrogate stems (15 long, 5 cm wide): one stem was imbibed with 1 ml of chloroform (control) and another with 1 ml of maize chloroform extracts. Maize extracts were obtained following the method described by Derridj et al (1996) for collecting waxes from the maize cuticle, which are known to stimulate oviposition of B. fusca (Juma 2005). Forty entire plants were collected around 18:00 hours and individually dipped into 500 ml of chloroform for 2 s. After filtration, the extract was then concentrated in rota-vapour (boiling point at 40°C, vacuum at 474 mbar) up to an equivalent of one plant per ml and stored at )20°C before use.…”

Section: Short-range Host Plant Recognitionmentioning

confidence: 99%

Differences in mate acceptance and host plant recognition between wild and laboratory‐reared Busseola fusca (Fuller)

Calatayud

Juma

Njagi

et al. 2008

J Applied Entomology

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The present study was aimed at characterizing differences in mate acceptance and host plant recognition between Busseola fusca (Lep.: Noctuidae) reared for several generations under laboratory conditions and wild conspecifics, directly collected from maize stems in the field. The mating success was significantly higher in laboratory reared when compared with the wild B. fusca population. Oviposition on artificial stems was significantly higher for laboratory‐reared insects than for the wild ones. Moreover, unlike adults of the wild strain, laboratory‐reared B. fusca showed no preference to oviposit on surrogate stems impregnated with maize extracts. Long‐range attraction to the host plant was significantly lower for laboratory‐reared insects. Furthermore, the polymerase chain reaction‐restriction fragment length polymorphism (PCR‐RFLP) analysis of mitochondrial DNA showed that the wild type and laboratory populations belonged to the same genetic strain, indicating that these differences between the populations were mainly phenotypic.

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“…They are indirectly detrimental to their host tree because they allow Fusarium to develop on the trichilium. Moreover, although it is possible that female moths select the most productive trees for their offspring [52] , the caterpillars seems to induce an increase in FB production, as do Azteca workers and clerid beetle ( Phyllobaenus sp.) larvae on Piper [36] .…”

Section: Discussionmentioning

confidence: 99%

Caterpillars and Fungal Pathogens: Two Co-Occurring Parasites of an Ant-Plant Mutualism

Roux

Céréghino²,

Solano³

et al. 2011

PLoS ONE

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In mutualisms, each interacting species obtains resources from its partner that it would obtain less efficiently if alone, and so derives a net fitness benefit. In exchange for shelter (domatia) and food, mutualistic plant-ants protect their host myrmecophytes from herbivores, encroaching vines and fungal pathogens. Although selective filters enable myrmecophytes to host those ant species most favorable to their fitness, some insects can by-pass these filters, exploiting the rewards supplied whilst providing nothing in return. This is the case in French Guiana for Cecropia obtusa (Cecropiaceae) as Pseudocabima guianalis caterpillars (Lepidoptera, Pyralidae) can colonize saplings before the installation of their mutualistic Azteca ants. The caterpillars shelter in the domatia and feed on food bodies (FBs) whose production increases as a result. They delay colonization by ants by weaving a silk shield above the youngest trichilium, where the FBs are produced, blocking access to them. This probable temporal priority effect also allows female moths to lay new eggs on trees that already shelter caterpillars, and so to occupy the niche longer and exploit Cecropia resources before colonization by ants. However, once incipient ant colonies are able to develop, they prevent further colonization by the caterpillars. Although no higher herbivory rates were noted, these caterpillars are ineffective in protecting their host trees from a pathogenic fungus, Fusarium moniliforme (Deuteromycetes), that develops on the trichilium in the absence of mutualistic ants. Therefore, the Cecropia treelets can be parasitized by two often overlooked species: the caterpillars that shelter in the domatia and feed on FBs, delaying colonization by mutualistic ants, and the fungal pathogen that develops on old trichilia. The cost of greater FB production plus the presence of the pathogenic fungus likely affect tree growth.

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Chemicals on the leaf surface, information about the plant available to insects

Cited by 13 publications

References 6 publications

Resource selection by female moths in a heterogeneous environment: what is a poor girl to do?

Resource selection by female moths in a heterogeneous environment: what is a poor girl to do?

Differences in mate acceptance and host plant recognition between wild and laboratory‐reared Busseola fusca (Fuller)

Caterpillars and Fungal Pathogens: Two Co-Occurring Parasites of an Ant-Plant Mutualism

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