Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes

Abstract Nucleic acids help clarify variation in species richness of insects having different metamorphosis modes, a biological conundrum. Here we analyse nucleic acid contents of 639 specimens of aquatic insects collected from four high mountain streams of Sierra Nevada in southern Spain to test wh...

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Autores principales:	Manuel Villar-Argaiz, Manuel J. López-Rodríguez, J. Manuel Tierno de Figueroa
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/02d1aeac48f84a6f89360b56d62d1901
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spelling	oai:doaj.org-article:02d1aeac48f84a6f89360b56d62d19012021-12-02T17:16:05ZDivergent nucleic acid allocation in juvenile insects of different metamorphosis modes10.1038/s41598-021-89736-w2045-2322https://doaj.org/article/02d1aeac48f84a6f89360b56d62d19012021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89736-whttps://doaj.org/toc/2045-2322Abstract Nucleic acids help clarify variation in species richness of insects having different metamorphosis modes, a biological conundrum. Here we analyse nucleic acid contents of 639 specimens of aquatic insects collected from four high mountain streams of Sierra Nevada in southern Spain to test whether the allocation to RNA or DNA content differs during ontogeny between juvenile insects undergoing direct (hemimetabolous) or indirect (holometabolous) metamorphosis. The results show that RNA content as a function of body mass was negatively correlated to insect body length in four out of six and three out of six of the holometabolan and hemimetabolan taxa, respectively. Although no significant differences in RNA content were found between holometabolans and hemimetabolans, the significant interaction between body length and metamorphosis mode for RNA and RNA:DNA indicates a strong ontogenetic component to RNA allocation. In addition, our finding of lower DNA content in holometabolans relative to hemimetabolans agree with the analysis of empirical genome data in aquatic and terrestrial insects, and extend to this class of arthropods the “growth rate-genome size-nutrient limitation” hypothesis that differences in allocation between RNA and DNA may reflect fundamental evolutionary trade-off of life-history strategies associated with high growth rates (and RNA content) in holometabolans at the expense of diminished genome sizes.Manuel Villar-ArgaizManuel J. López-RodríguezJ. Manuel Tierno de FigueroaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Manuel Villar-Argaiz Manuel J. López-Rodríguez J. Manuel Tierno de Figueroa Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes
description	Abstract Nucleic acids help clarify variation in species richness of insects having different metamorphosis modes, a biological conundrum. Here we analyse nucleic acid contents of 639 specimens of aquatic insects collected from four high mountain streams of Sierra Nevada in southern Spain to test whether the allocation to RNA or DNA content differs during ontogeny between juvenile insects undergoing direct (hemimetabolous) or indirect (holometabolous) metamorphosis. The results show that RNA content as a function of body mass was negatively correlated to insect body length in four out of six and three out of six of the holometabolan and hemimetabolan taxa, respectively. Although no significant differences in RNA content were found between holometabolans and hemimetabolans, the significant interaction between body length and metamorphosis mode for RNA and RNA:DNA indicates a strong ontogenetic component to RNA allocation. In addition, our finding of lower DNA content in holometabolans relative to hemimetabolans agree with the analysis of empirical genome data in aquatic and terrestrial insects, and extend to this class of arthropods the “growth rate-genome size-nutrient limitation” hypothesis that differences in allocation between RNA and DNA may reflect fundamental evolutionary trade-off of life-history strategies associated with high growth rates (and RNA content) in holometabolans at the expense of diminished genome sizes.
format	article
author	Manuel Villar-Argaiz Manuel J. López-Rodríguez J. Manuel Tierno de Figueroa
author_facet	Manuel Villar-Argaiz Manuel J. López-Rodríguez J. Manuel Tierno de Figueroa
author_sort	Manuel Villar-Argaiz
title	Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes
title_short	Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes
title_full	Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes
title_fullStr	Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes
title_full_unstemmed	Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes
title_sort	divergent nucleic acid allocation in juvenile insects of different metamorphosis modes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/02d1aeac48f84a6f89360b56d62d1901
work_keys_str_mv	AT manuelvillarargaiz divergentnucleicacidallocationinjuvenileinsectsofdifferentmetamorphosismodes AT manueljlopezrodriguez divergentnucleicacidallocationinjuvenileinsectsofdifferentmetamorphosismodes AT jmanueltiernodefigueroa divergentnucleicacidallocationinjuvenileinsectsofdifferentmetamorphosismodes
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Divergent nucleic acid allocation in juvenile insects of different metamorphosis modes

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