Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)

Abstract In insects, the gall-inducing life-style has evolved independently many times. Several evolutionary pathways leading to this lifestyle have been proposed. While there is compelling evidence supporting surface-feeders and stem-borers as ancestral states of insect gall-inducers, an evolutiona...

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Autores principales:	Antoine Guiguet, Issei Ohshima, Seiji Takeda, Françoise Laurans, Carlos Lopez-Vaamonde, David Giron
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2e36d0f33ae14055937b938c9a2c3349
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spelling	oai:doaj.org-article:2e36d0f33ae14055937b938c9a2c33492021-12-02T15:08:09ZOrigin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)10.1038/s41598-019-43213-72045-2322https://doaj.org/article/2e36d0f33ae14055937b938c9a2c33492019-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-43213-7https://doaj.org/toc/2045-2322Abstract In insects, the gall-inducing life-style has evolved independently many times. Several evolutionary pathways leading to this lifestyle have been proposed. While there is compelling evidence supporting surface-feeders and stem-borers as ancestral states of insect gall-inducers, an evolutionary pathway from leaf-miners remains hypothetical. Here we explored this question by comparing the developmental processes of two micromoths, a gall-inducer Caloptilia cecidophora (Lep., Gracillariidae), and its non-gall-inducing relative C. ryukyuensis. Like other Caloptilia, the first and second instars of C. cecidophora are leaf-miners and the gall is initiated inside the leaf mine by the third instar, thus suggesting leaf-mining as an ancestral, plesiomorphic state in this case. This is the first example of an insect species switching from leaf-mining to gall-inducing during larval development. The first two leaf-mining instars of C. cecidophora exhibit an absence of growth and a reduced time duration compared to C. ryukyuensis. The shortening of the duration of leaf-mining stages is apparently compensated in C. cecidophora by a larger egg size than C. ryukyuensis, and an additional larval instar during the gall phase.Antoine GuiguetIssei OhshimaSeiji TakedaFrançoise LauransCarlos Lopez-VaamondeDavid GironNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Antoine Guiguet Issei Ohshima Seiji Takeda Françoise Laurans Carlos Lopez-Vaamonde David Giron Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)
description	Abstract In insects, the gall-inducing life-style has evolved independently many times. Several evolutionary pathways leading to this lifestyle have been proposed. While there is compelling evidence supporting surface-feeders and stem-borers as ancestral states of insect gall-inducers, an evolutionary pathway from leaf-miners remains hypothetical. Here we explored this question by comparing the developmental processes of two micromoths, a gall-inducer Caloptilia cecidophora (Lep., Gracillariidae), and its non-gall-inducing relative C. ryukyuensis. Like other Caloptilia, the first and second instars of C. cecidophora are leaf-miners and the gall is initiated inside the leaf mine by the third instar, thus suggesting leaf-mining as an ancestral, plesiomorphic state in this case. This is the first example of an insect species switching from leaf-mining to gall-inducing during larval development. The first two leaf-mining instars of C. cecidophora exhibit an absence of growth and a reduced time duration compared to C. ryukyuensis. The shortening of the duration of leaf-mining stages is apparently compensated in C. cecidophora by a larger egg size than C. ryukyuensis, and an additional larval instar during the gall phase.
format	article
author	Antoine Guiguet Issei Ohshima Seiji Takeda Françoise Laurans Carlos Lopez-Vaamonde David Giron
author_facet	Antoine Guiguet Issei Ohshima Seiji Takeda Françoise Laurans Carlos Lopez-Vaamonde David Giron
author_sort	Antoine Guiguet
title	Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)
title_short	Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)
title_full	Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)
title_fullStr	Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)
title_full_unstemmed	Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)
title_sort	origin of gall-inducing from leaf-mining in caloptilia micromoths (lepidoptera, gracillariidae)
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/2e36d0f33ae14055937b938c9a2c3349
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Origin of gall-inducing from leaf-mining in Caloptilia micromoths (Lepidoptera, Gracillariidae)

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