Exploitation of gut bacteria in the locust

Dillon, Rod J.; Vennard, Christopher T.; Charnley, A.K.

doi:10.1038/35002669

Cited by 199 publications

(153 citation statements)

References 12 publications

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“…For example, cuticular hydrocarbons are known to affect mate preferences in Drosophila species (Coyne and Oyama 1995;Ishii et al 2001). Bacteria are known to affect pheromomal production in some insects, such as gut bacteria in the locust (Dillon et al 2000 that produce the aggregation pheromone. A second possibility is that Wolbachia alter behavior in subtle ways that contribute to assortative mating.…”

Section: Discussionmentioning

confidence: 99%

Influence of Antibiotic Treatment and Wolbachia Curing on Sexual Isolation Among Drosophila Melanogaster Cage Populations

et al. 2006

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Abstract. Speciation depends on the establishment of reproductive isolation between populations of the same species. Whether assortative mating evolves as a by-product of adaptation is a major question relevant to the origin of species by reproductive isolation. The long-term selection populations used here were originally established 30 years ago from a single cage population (originating from a maternal one) and subsequently subjected to divergent selection for tolerance of toxins in food (heavy metals versus ethanol) to investigate this question. Those populations now differ in sexual isolation and Wolbachia infection status. Wolbachia are common and widespread bacteria infecting arthropods and nematodes. Attention has recently focused on their potential role in insect speciation, due to post-mating spermegg incompatibilities induced by the bacteria. In this paper we examine the potential effect of Wolbachia on the level of sexual isolation. By antibiotic curing, we show that removal of Wolbachia decreases levels of mate discrimination (sexual isolation index) between populations by about 50%. Backcrossing experiments confirm that this effect is due to infection status rather than to genetic changes in the populations resulting from antibiotic treatment. Antibiotic treatment has no effect on mate discrimination level between uninfected populations. Our findings suggest that the presence of Wolbachia (or another undetected bacterial associate) act as an additive factor contributing to the level of pre-mating isolation between these Drosophila melanogaster populations. Given the ubiquity of bacterial associates of insects, such effects could be relevant to some speciation events.

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Section: Discussionmentioning

confidence: 99%

Influence of Antibiotic Treatment and Wolbachia Curing on Sexual Isolation Among Drosophila Melanogaster Cage Populations

et al. 2006

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“…More recently, Dillon et al (2000) demonstrated a bacterial origin for the phenolic compounds guaiacol and phenol, two components of the locust Schistocerca gregaria aggregation pheromone. They demonstrated that guaiacol, a key component of a pheromone derived from locust faecal pellets that promotes the aggregation, was produced by the bacterium Pantoea agglomerans in the locust gut.…”

Section: Coleopteramentioning

confidence: 99%

The semiochemically mediated interactions between bacteria and insects

et al. 2011

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In natural environment, semiochemicals are involved in many interactions between the different trophic levels involving insects, plants and hosts for parasitoids or prey for predators. These volatile compounds act as messengers within or between insect species, inducing particular behaviours, such as the localisation of a source of food, the orientation to an adequate oviposition site, the selection of a suitable breeding site and the localisation of hosts or prey. In this sense, bacteria have been shown to play an important role in the production of volatile compounds which ones act as semiochemicals. This review, focusing on the semiochemically mediated interactions between bacteria and insects, highlights that bacterial semiochemicals act as important messengers for insects. Indeed, in most of the studies reported here, insects respond to specific volatiles emitted by specific bacteria hosted by the insect itself (gut, mouthparts, etc.) or present in the natural environment where the insect evolves. Particularly, bacteria from the families Enterobacteriaceae, Pseudomonaceae and Bacillaceae are involved in many interactions with insects. Because semiochemicals naturally produced by bacteria could be a very interesting option for pest management, advances in this field are discussed in the context of biological control against insect pests.

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“…Mutualistic gut bacteria may provide essential food components to the host, or enhance its internal defence against toxic compounds or parasites. Examples of the first are the gut symbionts of cockroaches and termites (Breznak, 1982;Cruden & Markovetz, 1984), and of the second are symbionts that eliminate pathogenic fungi from the gut of the desert locust (Dillon et al, 2000). Earlier, we have described the bacterial species in the gut of western flower thrips (Frankliniella occidentalis), which is capable of enhancing the population growth rate of its host (De Vries et al, 2001a, b, 2004.…”

Section: Introductionmentioning

confidence: 99%

Western flower thrips (Thysanoptera: Thripidae) preference for thrips-damaged leaves over fresh leaves enables uptake of symbiotic gut bacteria

Vries¹,

Vos²,

Jacobs³

et al. 2006

Eur. J. Entomol.

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Abstract.To understand the evolution of insect gut symbionts it is important to determine how they are passed on to the next generation. We studied this process in Erwinia species bacteria that inhabit the gut of western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). This is a polyphagous herbivore and a world-wide pest in agricultural crops. With bacteria in the gut, the thrips larval development time can be shorter and its oviposition rate higher compared to bacteria-free thrips. Bacteria are not directly transmitted from mother to offspring, but larvae acquire bacteria from the leaves right after they hatch. These gut bacteria are present on the leaves on feeding sites used by other thrips before the larvae arrive, probably because these other thrips have deposited bacteria via faeces or regurgitation. In this study we addressed the question whether the transmission route of symbiotic bacteria influences the thrips feeding behaviour, and determined the feeding and oviposition preference of thrips, by giving them a choice between leaves with and leaves without prior grazing by other western flower thrips. This was studied for thrips with and thrips without gut bacteria. Young larvae prefer to feed on leaves that where grazed before by other thrips and females prefer to oviposit on these grazed leaves. These results are in contradiction to earlier studies that have found that thrips larvae fitness is lower on thrips damaged plants than on clean plants. This behaviour does however promote the establishment of gut bacteria in the thrips. The factors determining the preference for thrips-damaged leaves may be the physical leaf damage or odours that are produced by the plant, the bacteria or both.

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Exploitation of gut bacteria in the locust

Cited by 199 publications

References 12 publications

Influence of Antibiotic Treatment and Wolbachia Curing on Sexual Isolation Among Drosophila Melanogaster Cage Populations

Influence of Antibiotic Treatment and Wolbachia Curing on Sexual Isolation Among Drosophila Melanogaster Cage Populations

The semiochemically mediated interactions between bacteria and insects

Western flower thrips (Thysanoptera: Thripidae) preference for thrips-damaged leaves over fresh leaves enables uptake of symbiotic gut bacteria

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