Coleópteros: Diferenzas entre revisións

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[[Ficheiro:Soldier Beetle Trichodes alvearius taking off from Knapweed (cropped).jpg|miniatura|O escaravello ''[[Trichodes alvearius]]'' levantando o voo, mostrando os seus élitros duros que manteñen ríxidos e separados das ás de voo que hai debaixo|esquerda]]
 
As ás anteriores non as usan para [[voo dos insectos|voar]], senón que forman os élitros duros, que cobren a parte posterior do corpo e protexen as ás posteriores. Os élitros son xeralmente estruturas duras cobertoras que deben ser elevadas para permitir que as ás posteriores se movan para poder voar.<ref name="Carpenter"/> Porén, nos [[Cantharidae]], os élitros son moles.<ref>{{Cita web| title = Leatherwing (Soldier) Beetles | author = Philips, Chris; Fread, Elizabeth; Kuhar, Tom | accessdate = 14 March 2017| url = http://pubs.ext.vt.edu/ENTO/ENTO-53/ENTO-53-pdf.pdf| urlarquivo = https://web.archive.org/web/20161130002157/http://www.pubs.ext.vt.edu/ENTO/ENTO-53/ENTO-53-pdf.pdf| dataarquivo = 30 de novembro de 2016| urlmorta = si}}</ref> Outros escaravellos con ás moles son os [[Lycidae]] da especie ''[[Calopteron discrepans]]'', que teñen ás fráxiles que rompen doadamente para liberar substancias químicas para a defensa.<ref>{{Cita web |url=http://entomology.ifas.ufl.edu/creatures/misc/beetles/banded_net-winged_beetle.htm |title=Calopteron discrepans (Newman) (Insecta: Coleoptera: Lycidae) |author1=Donald W. Hall |author2=Marc A. Branham |date=2016 |publisher=[[University of Florida]] |accessdate=2017-03-15}}</ref>
 
As ás de voo dos coleópteros están atravesadas por veas e son pregadas unha vez que o animal aterra, a miúdo préganse ao longo desas veas, e quedan gardadas baixo os élitros. Un pregamento (''jugum'') da membrana na base de cada á é moi característico.<ref name="Carpenter">{{Cita libro |title=Insects, their structure and life |first=George Herbert |last=Carpenter |year=1899}}</ref> Algúns coleópteros perderon a capacidade de voar. Entre estes están algúns carábidos e algúns gurgullos (curculiónidos), e as especies de desertos e covas doutras familias. Moitas teñen os dous élitros fusionados, formando un escudo sólido sobre o abome. Nunhas poucas familias desaparceron tanto a capacidade de voar coma os élitros, como ocorre nos [[bioluminescencia|bioluminescentes]] [[Phengodidae]], nos que as femias lembran larvas durante toda a súa vida.<ref>{{Cita web |url=http://delta-intkey.com/elateria/www/phenmplf.htm |title=''Elateriformia'' (Coleoptera): descriptions, illustrations, identification, and information retrieval for families and subfamilies |author1=Lawrence, J. F. |author2=Hastings, A. M. |author3=Dallwitz, M. J. |author4=Paine, T. A. |author5=Zurcher, E. J. |date=2005 |accessdate=2017-01-26}}</ref> A presenza de élitros e ás non sempre indica que o animal realmente adoite voar. Por exemplo, os ''[[Chrysolina graminis]]'' (crisomélidos) camiñan dun hábitat a outro malia que fisicamente ten a capacidade de voar.<ref>{{Cita publicación periódica |author1=Beenen, R |author2=Winkelman, J. K. |date=2001 |title=Aantekeningen over Chrysomelidae in Nederland 5 |journal=Entomologische Berichten |language=[[Dutch language|Dutch]] |volume=61 |pages=63–67}}</ref>
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=== Como inspiración para certas tecnoloxías ===
Varias adaptacións dos coleópteros suscitaron o interese dos investigadores en [[biomimética]] con posibles aplicacións comerciais. O spray repelente do [[escaravello bombardeiro]] inspirou o desenvolvemento da tecnoloxía dun spray de nebulización fina que se considera que ten un baixo impacto de carbono comparado cos sprays de [[aerosol]].<ref>[https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology][https://web.archive.org/web/20131213022851/http://www.swedishbiomimetics.com/biomimetics_folder.pdf Swedish Biomimetics: The &mu;Mist Platform Technology] (orixinal URL = http://www.swedishbiomimetics.com/biomimetics_folder.pdf) (data de arquivo = 13 de decembro de 2013)</ref> O comportamente de recollida de humidade dos escaravellos do deserto de Namibia (''[[Stenocara gracilipes]]'') inspirou o deseño dunha botella de auga que se autoenche, que utiliza materiais [[hidrófilo]]s e [[hidrófobo]]s para beneficiar á xente que vive en rexións secas sen chuvias regulares.<ref>{{Cita web |url=https://www.bbc.co.uk/news/technology-20465982 |title=Namib Desert beetle inspires self-filling water bottle |publisher=BBC News |date=23 November 2012}}</ref>
 
Os escaravellos vivos foron utilizados como [[cyborg]]s. Un proxecto financiado pola [[Axencia de Proxectos de Investigación Avanzada]] de [[EUA]] implantou [[eléctrodo]]s no escaravello ''[[Mecynorhina torquata]]'', por medio dos cales se podía controlalo remotamente cun receptor de radio que o animal levaba ás costas, como proba do concepto para traballos de vixilancia.<ref>{{Cita novas |url=https://www.technologyreview.com/s/411814/the-armys-remote-controlled-beetle/ |title=The Army's Remote-Controlled Beetle |author1=Emily Singer |date=2009-01-29 |publisher=MIT Technology Review |accessdate=2017-03-16}}</ref> Unha tecnoloxía similar aplicouse para permitir que un operador humano controle o rumbo en voo libre e o paso ao camiñar de ''[[Mecynorhina torquata]]'', así como os xiros graduais e camiñar cara atrás de ''[[Zophobas morio]]''.<ref>{{Cita publicación periódica |title=Insect–computer hybrid legged robot with user-adjustable speed, step length and walking gait |author1=Feng Cao |author2=Chao Zhang |author3=Hao Yu Choo |author4=Hirotaka Sato |journal=Journal of the Royal Society Interface |date=2016 |volume=13 |issue=116 |pages=1–10 |doi=10.1098/rsif.2016.0060|pmc=4843679 }}</ref><ref>{{Cita publicación periódica |last=Sato |first=Hirotaka |last2=Doan |first2=Tat Thang Vo |last3=Kolev |first3=Svetoslav |last4=Huynh |first4=Ngoc Anh |last5=Zhang |first5=Chao |last6=Massey |first6=Travis L. |last7=Kleef |first7=Joshua van |last8=Ikeda |first8=Kazuo |last9=Abbeel |first9=Pieter |date=2015-03-16 |title=Deciphering the Role of a Coleopteran Steering Muscle via Free Flight Stimulation |url=http://www.cell.com/current-biology/fulltext/S0960-9822(15)00083-4 |journal=Current Biology |volume=25 |issue=6 |pages=798–803 |doi=10.1016/j.cub.2015.01.051}}</ref><ref>{{Cita publicación periódica |last=Vo Doan |first=Tat Thang |last2=Tan |first2=Melvin Y.W. |last3=Bui |first3=Xuan Hien |last4=Sato |first4=Hirotaka |date=2017-11-03 |title=An Ultralightweight and Living Legged Robot |url=http://online.liebertpub.com/doi/10.1089/soro.2017.0038 |journal=Soft Robotics |doi=10.1089/soro.2017.0038}}</ref>