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Juvenile hormone modulates hydrocarbon expression and reproduction in the german wasp Vespula germanica

da Silva, Rafael Carvalho; do Nascimento, Fabio Santos; Wenseleers, Tom; Oi, Cintia Akemi; (2022) Juvenile hormone modulates hydrocarbon expression and reproduction in the german wasp Vespula germanica. Frontiers in Ecology and Evolution , 10 , Article 1024580. 10.3389/fevo.2022.1024580. Green open access

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Abstract

Juvenile hormone (JH) affects multiple physiological traits in insects. In social insects, besides development, JH has been demonstrated to influence caste determination and the production of chemical compounds. In social wasps, JH triggers behavioral maturation, gonadotropic effects, and hydrocarbon modulation. Here, we investigated whether JH displays the same function in fertility and fertility cue production in females of the German wasp Vespula germanica, previously shown in the related species Vespula vulgaris. By experimentally treating workers with JH-analog, an anti-JH, and acetone solvent control, we tested whether JH modulates the cuticular chemical expression (CHCs), the Dufour’s gland chemical composition, and hence the compounds found over the egg’s surface. Additionally, we explored whether JH has a gonadotropic effect on workers. Workers treated with the JH-analog acquired a chemical profile that was intermediate between the queen and other treated workers. Interestingly, the same pattern was also seen in the Dufour’s glands and eggs, although more subtle. Furthermore, workers treated with the JH-analog were more fertile when compared to the controls, supporting the fact that JH acts as a gonadotropic hormone. Our results indicate a similar function of JH in societies of related wasp species V. germanica and V. vulgaris.

Type: Article
Title: Juvenile hormone modulates hydrocarbon expression and reproduction in the german wasp Vespula germanica
Open access status: An open access version is available from UCL Discovery
DOI: 10.3389/fevo.2022.1024580
Publisher version: http://doi.org/10.3389/fevo.2022.1024580
Language: English
Additional information: © 2022 da Silva, do Nascimento, Wenseleers and Oi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (http://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Keywords: fertility cues, hydrocarbons, Dufour’s gland, Vespula germanica, Vespinae
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment
URI: https://discovery.ucl.ac.uk/id/eprint/10170933
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