On insect feeding on cyanobacteria

Кривошеина, М. Г.

doi:10.1134/s003103010806004x

Cited by 15 publications

(12 citation statements)

References 11 publications

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“…The Kamptonema strain used in this study produces the neurotoxin anatoxin-a (or very fast death factor) as well as the cytotoxin cylindrospermopsin [34,35]. Possibly, mosquito larvae might have a certain degree of tolerance for cyanobacterial toxins, akin to what is found in lake flies (Chironomidae) and shore flies (Ephydridae), which habitually feed on cyanobacterial mats [36]. Not all cyanobacteria are toxic, however, and mosquitoes might be endowed with other means, olfactory and/or gustatory, to separate harmful cyanobacteria from harmless.…”

Section: Discussionmentioning

confidence: 99%

Geosmin Attracts Aedes aegypti Mosquitoes to Oviposition Sites

et al. 2020

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Section: Discussionmentioning

confidence: 99%

Geosmin Attracts Aedes aegypti Mosquitoes to Oviposition Sites

et al. 2020

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“…PCC 6506 strain used in this study produces the neurotoxin anatoxin-a (or Very Fast Death Factor, VFDF) as well as the cytotoxin cylindrospermopsin [Méjean et al, 2010;Mazmouz et al, 2010]. Possibly, mosquito larvae might have a certain degree of tolerance for cyanobacterial toxins, akin what is found in lake flies (Chironomidae) and shore flies (Ephydridae), which habitually feed on cyanobacterial mats [Krivosheina 2008]. Not all cyanobacteria are toxic, however, and mosquitoes might be endowed with other means, olfactory and/or gustatory, to separate harmful cyanobacteria from harmless.…”

Section: Resultsmentioning

confidence: 99%

Geosmin attractsAedes aegyptimosquitoes to oviposition sites

Melo

Wolff

Costa-da-Silva

et al. 2019

Preprint

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Geosmin is one of the most recognizable and common microbial smells on the planet. Some insects, like mosquitoes, require microbial-rich environments for their progeny, whereas for other insects such microbes may prove dangerous. In the vinegar fly Drosophila melanogaster, geosmin is decoded in a remarkably precise fashion and induces aversion, presumably signaling the presence of harmful microbes. We have here investigated the effect of geosmin on the behavior of the yellow fever mosquito Aedes aegypti. In contrast to flies, geosmin is not aversive in mosquitoes but stimulates egg-laying site selection. Female mosquitoes could associate geosmin with microbes, including cyanobacteria consumed by larvae, who also find geosmin -as well as geosmin producing cyanobacteria -attractive. Using in vivo multiphoton imaging from mosquitoes with pan-neural expression of the calcium reporter GCaMP6s, we show that Ae. aegypti code geosmin in a similar fashion to flies, i.e. with extreme sensitivity and with a high degree of selectivity. We further demonstrate that geosmin can be used as bait under field conditions, and finally we show that geosmin, which is both expensive and difficult to obtain, can be substituted by beetroot peel extract, providing a cheap and viable mean of mosquito control and surveillance in developing countries.

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“…Phylum Cyanobacteria was prevalent in one location, and these bacteria are associated with high levels of protein, vitamins, and microelements. They are known to release toxins during their life that lead to concentration dependent, and species-specific negative effects on animal feeders [59]. These five phyla were also found to be predominant in the microbiome of the other thrips species Scirtothrips dorsalis and Hoplothrips carpathicus [16,42].…”

Section: Discussionmentioning

confidence: 99%

Microbiome profiling of the onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae)

et al. 2019

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The gut microbial community structure of adult Thrips tabaci collected from 10 different agro-climatically diverse locations of India was characterized by using the Illumina MiSeq platform to amplify the V3 region of the 16S rRNA gene of bacteria present in the sampled insects. Analyses were performed to study the bacterial communities associated with Thrips tabaci in India. The complete bacterial metagenome of T. tabaci was comprised of 1662 OTUs of which 62.25% belong to known and 37.7% of unidentified/unknown bacteria. These OTUs constituted 21 bacterial phyla of 276 identified genera. Phylum Proteobacteria was predominant, followed by Actinobacteria, Firmicutes, Bacteroidetes and Cyanobacteria. Additionally, the occurrence of the reproductive endosymbiont, Wolbachia was detected at two locations (0.56%) of the total known OTUs. There is high variation in diversity and species richness among the different locations. Alpha-diversity metrics indicated the higher gut bacterial diversity at Bangalore and lowest at Rahuri whereas higher bacterial species richness at T. tabaci samples from Imphal and lowest at Jhalawar. Beta diversity analyses comparing bacterial communities between the samples showed distinct differences in bacterial community composition of T. tabaci samples from different locations. This paper also constitutes the first record of detailed bacterial communities associated with T. tabaci. The location-wise variation in microbial metagenome profile of T. tabaci suggests that bacterial diversity might be governed by its population genetic structure, environment and habitat.

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On insect feeding on cyanobacteria

Cited by 15 publications

References 11 publications

Geosmin Attracts Aedes aegypti Mosquitoes to Oviposition Sites

Geosmin Attracts Aedes aegypti Mosquitoes to Oviposition Sites

Geosmin attractsAedes aegyptimosquitoes to oviposition sites

Microbiome profiling of the onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae)

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